CN104772851A - Composite product integrating aluminum material and plastic and its manufacturing method - Google Patents

Abstract

The invention relates to the technical field of aluminum and plastic combination, in particular to a composite product with aluminum and plastic integrally combined and a manufacturing method thereof. The method for manufacturing the composite product integrally combining the aluminum material and the plastic comprises the following steps: step one, cleaning an aluminum material; step two, carrying out anodic oxidation treatment on the aluminum material to form an anodic oxidation film formed by countless micropores on the surface of the aluminum material; step three, baking the aluminum material; step four, preheating the aluminum material; step five, placing a part or all of the aluminum material in a cavity in a mold, injecting molten plastic into the cavity, filling a part of the molten plastic into countless micropores on the surface of an anodic oxidation film of the aluminum material, and pressurizing and accelerating filling and forming the molten plastic in the cavity; and step six, baking the cavity to obtain the composite product with the aluminum material and the plastic integrated. The aluminum material and the die cavity of the manufacturing method are easy to match, the dimensional precision is high, the production efficiency is high, and the stability of the aluminum material and the fused plastic forming body is good.

Description

Composite product integrating aluminum material and plastic and its manufacturing method

technical field

The invention relates to the technical field of combination of aluminum material and plastic, in particular to a composite product integrally combined with aluminum material and plastic and a manufacturing method thereof.

Background technique

The combination of aluminum and plastic is more and more widely used, for example, computers, digital cameras, mobile phones, rack-mounted parts and other electrical appliances, electronic parts, distribution boxes, etc. The manufacture of various parts such as electrical appliances such as boxes or covers, electronic machine casings, parts of buildings or interior and exterior decorations for installation in cars, etc., is mostly done by stamping aluminum materials into various shapes such as boxes or covers first. After the aluminum forming plate is formed, it is assembled with the plastic forming body formed into the required shape in various ways to manufacture aluminum plastic composite products. That is, in conventionally manufactured aluminum-plastic composite products, an aluminum formed plate and a plastic formed body are often bonded to each other with a double-sided adhesive tape. The previous method of joining aluminum and plastic with double-sided adhesive has the disadvantages that the aluminum and plastic are easily peeled off and not stable enough.

In addition, in the prior art, in order to solve the problem that the aluminum material and the plastic are easy to peel off and not stable enough, there has been a method of combining the plastic material with the aluminum material through injection molding using a mold. However, in the prior art, the method of combining molten plastic with aluminum through injection molding with a mold has the disadvantage of low production efficiency due to insufficient optimization of the process. Moreover, due to the different materials of the aluminum and the mold, the aluminum The thermal expansion coefficient difference between the aluminum material and the mold is large, which makes it difficult to cooperate between the aluminum material and the mold cavity due to the unstable size between the aluminum material and the mold cavity, which makes production difficult. , It is necessary to redesign the size of the aluminum material and the mold cavity before proceeding to production, which not only increases the production cost, but also seriously reduces the production efficiency.

Contents of the invention

One of the objectives of the present invention is to address the shortcomings of the prior art and provide a method for manufacturing a composite product that is integrally combined with aluminum and plastics, which has high production efficiency and can ensure the dimension stability of the aluminum material and the mold cavity.

The second object of the present invention is to address the shortcomings of the prior art and provide a composite product manufactured by a method for manufacturing a composite product in which aluminum material and plastic are integrally combined.

The third object of the present invention is to provide a method for manufacturing composite products after post-processing to address the shortcomings of the prior art.

The fourth object of the present invention is to provide a composite product manufactured by a post-processed composite product manufacturing method for the deficiencies of the prior art.

The fifth object of the present invention is to provide a method for manufacturing a composite product for the deficiencies of the prior art.

In order to achieve one of the above objects, the present invention adopts the following technical solutions:

Provided is a method for manufacturing a composite product integrally combined with aluminum material and plastic, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2. Immerse the cleaned aluminum material in step 1 in the electrolyte of phosphoric acid, nitric acid or sodium hydroxide, and anodize the surface of the aluminum material by direct current electrolysis, so that the surface of the aluminum material is formed by numerous micropores. Anodized film, at least 85% of the micropores formed on the surface of aluminum are micropores with a diameter of 25nm~120nm;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 80° C. to 150° C. for 5 minutes to 30 minutes;

Step 4, preheating the aluminum material that has been baked in step 3 so that the temperature of the aluminum material reaches 100° C. to 250° C.;

Step 5, placing part or all of the aluminum material that reaches 100°C to 250°C in step 4 in a cavity with the desired shape in the mold, injecting molten plastic into the cavity, and a part of the molten plastic Fill the countless micropores on the surface of the anodized film of the aluminum material, and at the same time use the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; The pressure applied by the molten plastic is 80MPa~400MPa, and the speed at which the screw presses the molten plastic in the cavity is 100mm/s~1000mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 120°C to 180°C for 2 hours to 6 hours to obtain aluminum and plastic All-in-one composite.

In the above technical solution, in the second step, the aluminum material is immersed in an aqueous phosphoric acid solution with a liquid temperature of 10°C-30°C and a weight percentage of 1.2%-1.35%, using the aluminum material as an anode, and using The voltage is 20V~100V, and the current density is 0.5A/dm2~2A/dm2 for 5 minutes to 25 minutes of electrolysis, thereby forming an anode with countless micropores with a diameter of 30nm~120nm on the surface of the aluminum material Oxide film.

In the above technical solution, in the second step, the aluminum material is immersed in an aqueous nitric acid solution with a liquid temperature of 10°C-30°C and a weight percentage of 0.5%-0.8%, using the aluminum material as an anode, and using The direct current with a voltage of 20V~50V and a current density of 0.5A/dm2~1.5A/dm2 is electrolyzed for 5 minutes to 25 minutes, thereby forming countless micropores with a diameter of 30nm~120nm on the surface of the aluminum material. Anodized film.

In the above technical solution, in the second step, the aluminum material is immersed in an aqueous sodium hydroxide solution with a liquid temperature of 10°C to 30°C and a molar concentration of 0.05mol/L to 0.3mol/L, and the aluminum Aluminum material is used as an anode, and electrolysis is carried out for 5 minutes to 25 minutes with a direct current with a voltage of 15~45V and a current density of 0.5A/dm2~3A/dm2, thereby forming countless aluminum alloys with a diameter of 30nm~120nm on the surface of the aluminum material. microporous anodized film.

In the above technical solution, in step five, the mold is preheated to a state of 140°C-200°C, and then a part or all of the aluminum material reaching 100°C-250°C in step four is placed in the mold with the In the cavity of the required shape, the molten plastic in the cavity is pressurized and accelerated to fill the shape.

In the above-mentioned technical solution, using plate-like or die-cast aluminum materials or aluminum materials made by applying two-dimensional or three-dimensional bending to the aluminum materials through stamping, by All or part of the anodized film is molded by injection of molten plastic to form a molded body of molten plastic corresponding to the shape of the cavity. The state is joined together.

In order to achieve the above-mentioned object two, the present invention adopts the following technical solutions:

A composite product manufactured by a method of manufacturing a composite product in which aluminum and plastic are integrally combined is provided.

In order to achieve the above object three, the present invention adopts the following technical solutions:

Provided is a method for manufacturing a composite product after post-treatment. In the above-mentioned method for manufacturing a composite product that is integrally combined with aluminum material and plastic, the countless micropores on the anodized film of the aluminum material are formed by the injected molten plastic After the composite product formed by melting the plastic molded body and joining it in the state of occlusion is manufactured, the anodized film on the composite product that is not covered by the molten plastic is coated with a corrosion-resistant paint to form a corrosion-resistant coating film .

Provided is a method for manufacturing a composite product after post-treatment. In the above-mentioned method for manufacturing a composite product that is integrally combined with aluminum material and plastic, the countless micropores on the anodized film of the aluminum material are formed by the injected molten plastic After the composite product formed by melting the plastic molded body and joining it in a occluded state is manufactured, the surface of the anodized film not covered by the molten plastic on the composite product is stripped and electrolyzed in a sulfuric acid bath to form a sulfuric acid anode The oxidized corrosion-resistant film is then subjected to a colored or non-colored sealing treatment.

Wherein, the molten plastic that is injection-molded into a molten plastic molded body is a molten plastic that has an elastic coefficient capable of absorbing the difference in linear expansion between the aluminum material and the molten plastic due to rapid temperature changes.

In order to achieve the above object four, the present invention adopts the following technical solutions:

Provided is a composite product manufactured by a method of manufacturing a post-processed composite product.

In order to achieve the fifth of the above-mentioned purpose, the present invention adopts the following technical solutions:

A method for manufacturing a composite product is provided, which includes the following steps:

(a) using the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in step 2 of claim 1 to implement anodizing treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material is formed by countless diameters of Anodized film formed by micropores of 25nm~120nm;

(b) secondly, allowing one of the surfaces of the anodized aluminum to form the printing surface;

(c) Then, carry out two-dimensional or three-dimensional bending forming of the aluminum material by stamping;

(d) Furthermore, part or all of the aluminum material that has been bent and formed with an anodized film is placed in a cavity of the desired shape in the mold, and a part or all of the anodized film exposed in the cavity is All the molten plastic is injected, and a part of the molten plastic is filled into numerous micropores on the surface of the anodized film, and the molten plastic in the cavity is pressurized to accelerate filling and forming.

Provide a kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, the printing surface is subjected to two-dimensional or three-dimensional bending forming by stamping;

(c) Next, on the other side of the bent aluminum material that has not been printed, use the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in claim 1 step 2 to implement anodic oxidation on both sides of the plate-shaped aluminum material treatment, so that the surface of the plate-shaped aluminum material forms an anodic oxide film formed by numerous micropores with a diameter of 25nm to 120nm;

(d) Furthermore, a part or all of the aluminum material formed with the anodic oxide film is placed in a cavity of the required shape in the mold, and a part or all of the anodic oxide film exposed in the cavity is shot and melted. Plastic, a part of the molten plastic is filled into the countless micropores on the surface of the anodized film, and at the same time, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Provide a kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, on the surface of the aluminum material that has not been printed, use the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in claim 1 step 2 to implement anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so as to making the surface of the plate-shaped aluminum material form an anodized film formed by numerous micropores with a diameter of 25nm to 120nm;

(c) Next, perform two-dimensional or three-dimensional bending forming on the surface on which the anodized film is formed by pressing;

(d) Furthermore, a part or all of the aluminum material formed with the anodic oxide film is placed in a cavity of the required shape in the mold, and a part or all of the anodic oxide film exposed in the cavity is shot and melted. Plastic, a part of the molten plastic is filled into the countless micropores on the surface of the anodized film, and at the same time, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Compared with the prior art, the present invention has beneficial effects as follows:

(1) In the method for manufacturing a composite product in which aluminum material and plastic are integrally combined provided by the present invention, in the process of manufacturing the composite product, the aluminum material baked in step 3 is preheated so that the temperature of the aluminum material reaches 100 ℃~250℃, then put the aluminum material into the cavity of the mold in a heated state, so as to avoid the gap between the aluminum material and the mold cavity due to the large difference in thermal expansion coefficient between the aluminum material and the mold. Dimensional instability often causes the problem of difficulty in matching between the aluminum material and the mold cavity, that is, the manufacturing method of the composite product integrating aluminum and plastic in the present invention can ensure high dimensional accuracy of the aluminum material and the mold cavity so that The aluminum material and the mold cavity are easy to cooperate, thereby avoiding the need to redesign the size of the aluminum material and the mold cavity before production, and therefore, the production efficiency can be improved.

(2) The manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined provided by the present invention, since in the process of manufacturing the composite product, after the anodic oxide film is formed on the surface of the aluminum material, the aluminum material is baked at 80°C~150°C Bake for 5 minutes to 30 minutes to dry the moisture on the surface of the anodized film formed on the surface of the aluminum material as soon as possible, thereby shortening the production time and improving production efficiency.

(3) The manufacturing method of the composite product which is integrally combined with aluminum material and plastic provided by the present invention, because in the process of manufacturing the composite product, after the molten plastic in the cavity is filled and formed, the cavity is baked at 120°C~180°C The process of baking for 2 hours to 6 hours can ensure that the molten plastic fills the micropores of the anodized film, thereby further improving the stability between the aluminum material and the molten plastic molded body.

(3) The manufacturing method of the composite product which is integrally combined with aluminum material and plastic provided by the present invention has the characteristics of simple method and can be applied to large-scale production.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example 1.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an electrolyte with a liquid temperature of 20°C and a phosphoric acid aqueous solution with a weight percentage of 1.3%, using the aluminum material as an anode, and using a voltage of 60V and a current density of 1.2A /dm2 of direct current for 15 minutes of electrolysis, thereby forming an anodic oxide film with countless micropores with a diameter of at least 85% of 100nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 110° C. for 15 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 160°C;

Step 5: Place part of the aluminum material that reaches 160°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material. Numerous micro holes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 200MPa, and the screw presses against the molten plastic in the cavity The speed is 500mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 150° C. for 4 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 2.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an electrolyte with a liquid temperature of 30°C and a phosphoric acid aqueous solution of 1.35% by weight, use the aluminum material as the anode, and set the voltage at 100V and the current density at 2A/ dm2 direct current for 5 minutes of electrolysis, thereby forming an anodic oxide film with countless micropores with a diameter of 120nm at least 85% on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 150° C. for 5 minutes;

Step 4, preheating the aluminum material that has been baked in step 3 so that the temperature of the aluminum material reaches 250°C;

Step 5: Place all the aluminum material that reaches 250°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 400MPa, and the screw presses against the molten plastic in the cavity The speed is 1000mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 180° C. for 2 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 3.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the aluminum material cleaned in step 1 in the electrolyte solution with a liquid temperature of 10°C and a phosphoric acid aqueous solution of 1.2% by weight, use the aluminum material as the anode, and set the voltage to 20V and the current density to 0.5A The direct current of /dm2 is electrolyzed for 5 minutes, thereby forming an anodic oxide film with countless micropores with a diameter of at least 85% of 30nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 80° C. for 5 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 100°C;

Step 5: Place part of the aluminum material that reaches 100°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material. Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 80MPa, and the screw presses against the molten plastic in the cavity The speed is 100mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 120° C. for 2 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 4.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined is characterized in that it includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

In step 2, immerse the cleaned aluminum material in step 1 in an electrolyte with a liquid temperature of 14°C and a nitric acid aqueous solution of 0.6% by weight, using the aluminum material as an anode, and using a voltage of 35V and a current density of 1A/ Direct current of dm2 is electrolyzed for 15 minutes, thereby forming an anodic oxide film with numerous micropores with at least 85% diameter of 95 nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 140° C. for 8 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 220°C;

Step 5, place a part of the aluminum material that reaches 220°C in step 4 in a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill a part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill and shape the molten plastic in the cavity by means of pressurization and acceleration; the pressure exerted by the screw on the molten plastic in the cavity is 100MPa, and the screw presses against the molten plastic in the cavity The speed is 200mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 170° C. for 2.5 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 5.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an aqueous nitric acid solution with a liquid temperature of 30°C and a weight percentage of 0.8%, using the aluminum material as an anode, and using a voltage of 50V and a current density of 1.5A/ The direct current of dm2 carries out electrolysis for 5 minutes, thereby forms an anodic oxide film with numerous micropores with a diameter of 120 nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 130° C. for 10 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 200°C;

Step 5: Place part of the aluminum material that reaches 200°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill and shape the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 250MPa, and the screw presses against the molten plastic in the cavity The speed is 900mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 130° C. for 5.5 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 6.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an aqueous solution of nitric acid with a liquid temperature of 10°C and a weight percentage of 0.5%, using the aluminum material as an anode, and using a voltage of 20V and a current density of 0.5A/ The direct current of dm2 carries out electrolysis for 5 minutes, thereby forms an anodized film with numerous micropores with a diameter of 30 nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 140° C. for 8 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 220°C;

Step 5, place a part of the aluminum material that reaches 220°C in step 4 in a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill a part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 350MPa, and the screw presses against the molten plastic in the cavity The speed is 300mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 160° C. for 5 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 7.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an aqueous sodium hydroxide solution with a liquid temperature of 16°C and a molar concentration of 0.1mol/L, using the aluminum material as the anode, and using a voltage of 30V and a current density of 1.5A /dm2 of direct current for 13 minutes of electrolysis, thereby forming an anodic oxide film with numerous micropores with a diameter of 110nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 130° C. for 10 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 200°C;

Step 5: Place part of the aluminum material that reaches 200°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill and shape the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 250MPa, and the screw presses against the molten plastic in the cavity The speed is 900mm/s;

Among them, in this embodiment, the aluminum material made by stamping and three-dimensional bending is used, and a part of the anodized film of the aluminum material is injected with molten plastic to form a corresponding cavity. A shaped body of molten plastic, and at the same time, a part of the molten plastic is joined in a state of occlusion in the numerous micropores on the anodized film;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 130° C. for 5.5 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 8.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

In step 2, immerse the cleaned aluminum material in step 1 in an aqueous sodium hydroxide solution with a liquid temperature of 30°C and a molar concentration of 0.3 mol/L, using the aluminum material as the anode, and using a voltage of 5V and a current density of 3A/L The direct current of dm2 is electrolyzed for 25 minutes, thereby forming an anodic oxide film with countless micropores with a diameter of 120 nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 150° C. for 5 minutes;

Step 4, preheating the aluminum material that has been baked in step 3 so that the temperature of the aluminum material reaches 250°C;

Step 5: Place all the aluminum material that reaches 250°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 400MPa, and the screw presses against the molten plastic in the cavity The speed is 1000mm/s;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 180° C. for 2 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 9.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an aqueous solution of sodium hydroxide with a liquid temperature of 10°C and a molar concentration of 0.05mol/L, using the aluminum material as the anode, and using a voltage of 15V and a current density of 0.5A The direct current of /dm carries out electrolysis for 25 minutes, thereby forms an anodized film with numerous micropores with a diameter of 30nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 110° C. for 15 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 160°C;

Step 5: Place part of the aluminum material that reaches 160°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material. Numerous micro holes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 200MPa, and the screw presses against the molten plastic in the cavity The speed is 500mm/s;

Among them, in this embodiment, the aluminum material made by applying two-dimensional bending to the aluminum material by stamping is used, and a part of the anodized film of the aluminum material is injected with molten plastic to form a corresponding cavity shape. A molded body of molten plastic, at the same time a part of the molten plastic is bonded in a snap-fit state in the numerous micropores on the anodized film;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 150° C. for 4 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 10.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an aqueous solution of nitric acid with a liquid temperature of 10°C and a weight percentage of 0.5%, using the aluminum material as an anode, and using a voltage of 20V and a current density of 0.5A/ The direct current of dm2 carries out electrolysis for 5 minutes, thereby forms an anodized film with numerous micropores with a diameter of 30 nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 140° C. for 8 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 220°C;

Step 5, place a part of the aluminum material that reaches 220°C in step 4 in a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill a part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 350MPa, and the screw presses against the molten plastic in the cavity The speed is 300mm/s; in step 5 of this embodiment, the mold is heated to 200°C in advance, and then a part of the aluminum material that reaches 220°C in step 4 is placed in the cavity with the required shape in the mold, And the molten plastic in the cavity is pressurized and accelerated to fill and shape.

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 160° C. for 5 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 11.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the aluminum material cleaned in step 1 in the electrolyte solution with a liquid temperature of 10°C and a phosphoric acid aqueous solution of 1.2% by weight, use the aluminum material as the anode, and set the voltage to 20V and the current density to 0.5A The direct current of /dm2 is electrolyzed for 5 minutes, thereby forming an anodic oxide film with countless micropores with a diameter of at least 85% of 30nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 80° C. for 5 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 100°C;

Step 5: Place part of the aluminum material that reaches 100°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material. Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 80MPa, and the screw presses against the molten plastic in the cavity The speed is 100mm/s; in step 5 of this embodiment, the mold is heated to 140°C in advance, and then a part of the aluminum material that reaches 100°C in step 4 is placed in the cavity with the required shape in the mold, And pressurize and accelerate the filling of molten plastic in the cavity;

Wherein, in this embodiment, the die-casting aluminum material is used, and a part of the anodized film of the aluminum material is injected with molten plastic to form a molded body of molten plastic corresponding to the shape of the cavity, and a part of the plastic is melted at the same time. It is bonded in the state of occlusal bonding in numerous micropores on the anodized film;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 120° C. for 2 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 12.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an electrolyte with a liquid temperature of 20°C and a phosphoric acid aqueous solution with a weight percentage of 1.3%, using the aluminum material as an anode, and using a voltage of 60V and a current density of 1.2A /dm2 of direct current for 15 minutes of electrolysis, thereby forming an anodic oxide film with countless micropores with a diameter of at least 85% of 100nm on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 110° C. for 15 minutes;

Step 4, preheating the aluminum material baked in step 3 so that the temperature of the aluminum material reaches 160°C;

Step 5: Place part of the aluminum material that reaches 160°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material. Numerous micro holes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 200MPa, and the screw presses against the molten plastic in the cavity The speed is 500mm/s; in step 5 of this embodiment, the mold is preheated to 170°C, and then a part of the aluminum material that reaches 160°C in step 4 is placed in a cavity with the required shape in the mold. And pressurize and accelerate the filling of molten plastic in the cavity;

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 150° C. for 4 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 13.

A method for manufacturing a composite product in which aluminum and plastic are integrally combined, which includes the following steps:

  Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material;

Step 2, immerse the cleaned aluminum material in step 1 in an electrolyte with a liquid temperature of 30°C and a phosphoric acid aqueous solution of 1.35% by weight, use the aluminum material as the anode, and set the voltage at 100V and the current density at 2A/ dm2 direct current for 5 minutes of electrolysis, thereby forming an anodic oxide film with countless micropores with a diameter of 120nm at least 85% on the surface of the aluminum material;

Step 3, baking the aluminum material with the anodized film formed in step 2 at 150° C. for 5 minutes;

Step 4, preheating the aluminum material that has been baked in step 3 so that the temperature of the aluminum material reaches 250°C;

Step 5: Place all the aluminum material that reaches 250°C in step 4 into a cavity with the desired shape in the mold, inject molten plastic into the cavity, and fill part of the molten plastic into the surface of the anodized film of the aluminum material Numerous microholes, while using the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; among them, the pressure exerted by the screw on the molten plastic in the cavity is 400MPa, and the screw presses against the molten plastic in the cavity The speed is 1000mm/s;

Among them, in this embodiment, a plate-shaped aluminum material is used to form a molded body of molten plastic corresponding to the shape of the cavity by injecting molten plastic into the entire anodized film of the aluminum material, and at the same time, a part of the molten plastic is melted. It is bonded in a snap-fit state in numerous micropores on the anodized film.

Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 180° C. for 2 hours to obtain a composite product in which aluminum and plastic are integrated.

Example 14.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in embodiment 1.

Example 15.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in Example 2.

Example 16.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in embodiment 3.

Example 17.

The composite manufactured by the manufacturing method of the composite of aluminum material and plastic integrally combined in embodiment 4.

Example 18.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in embodiment 5.

Example 19.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in embodiment 6.

Example 20.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in Example 7.

Example 21.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in embodiment 8.

Example 22.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in Example 9.

Example 23.

The composite product manufactured by the method for manufacturing a composite product in which aluminum material and plastic are integrally combined in embodiment 10.

Example 24.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in Example 11.

Example 25.

The composite product manufactured by the manufacturing method of the composite product in which the aluminum material and the plastic are integrally combined in Example 12.

Example 26.

The composite product manufactured by the method for manufacturing a composite product in which aluminum material and plastic are integrally combined in Example 13.

Example 27.

A method for manufacturing a post-processed composite product, characterized in that: in the method for manufacturing a composite product in which aluminum material and plastic are integrally combined in Example 1, the countless micropores on the anodized film of the aluminum material are injected into the molten plastic After the composite product formed into a molten plastic molded body and joined in a snap-in state is produced, the anodized film on the composite product not covered by the molten plastic is coated with a corrosion-resistant paint to form a corrosion-resistant coating film.

Among them, the molten plastic that is injection molded into a molten plastic molded body is a molten plastic that can absorb the difference in linear expansion between the aluminum material and the molten plastic due to rapid temperature changes.

Example 28.

A method for manufacturing a composite product after post-processing, in the method for manufacturing a composite product in which an aluminum material and plastic are integrated in Example 2, the countless micropores on the anodized film of the aluminum material are formed into a molten plastic by the injected molten plastic After the molded body is bonded into a composite product that is joined in a snap-fit state, the surface of the anodized film on the composite product that is not covered by molten plastic is removed, and electrolyzed in a sulfuric acid bath to form the corrosion resistance of sulfuric acid anodic oxidation. The membrane is then subjected to a colored sealing treatment.

Among them, the molten plastic that is injection molded into a molten plastic molded body is a molten plastic that can absorb the difference in linear expansion between the aluminum material and the molten plastic due to rapid temperature changes.

Example 29.

A method for manufacturing a composite product after post-treatment, in the method for manufacturing a composite product in which an aluminum material and plastic are integrated in Example 3, the numerous micropores on the anodized film of the aluminum material are formed into a molten plastic by the injected molten plastic After the molded body is bonded into a composite product that is joined in a snap-fit state, the surface of the anodized film on the composite product that is not covered by molten plastic is removed, and electrolyzed in a sulfuric acid bath to form the corrosion resistance of sulfuric acid anodic oxidation. The membrane is then subjected to a non-pigmented sealing treatment.

Among them, the molten plastic that is injection molded into a molten plastic molded body is a molten plastic that can absorb the difference in linear expansion between the aluminum material and the molten plastic due to rapid temperature changes.

Example 30.

A composite product manufactured by the method for manufacturing a post-processed composite product according to Example 27.

Example 31.

Composite product produced by the post-processed composite product manufacturing method in Example 28.

Example 32.

Composite product manufactured by the manufacturing method of a post-processed composite product in Example 29.

Example 33.

A method for manufacturing a composite product, comprising the steps of:

(a) using the electrolytic solution of phosphoric acid in step 2 of Example 1 to implement anodizing treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material forms an anodic oxidation film formed by numerous micropores with a diameter of 120 nm;

(b) secondly, allowing one of the surfaces of the anodized aluminum to form the printing surface;

(c) Then, the aluminum material is subjected to two-dimensional bending forming by stamping;

(d) Furthermore, part of the aluminum material that has been bent and formed with an anodized film is placed in a cavity of the desired shape in the mold, and molten plastic is injected into a part of the anodized film exposed in the cavity, so that Part of the above-mentioned molten plastic is filled into numerous micropores on the surface of the anodized film, and at the same time, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Example 34.

A method for manufacturing a composite product, comprising the steps of:

(a) using the electrolytic solution of nitric acid in step 2 of Example 4 to implement anodizing treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material forms an anodic oxidation film formed by numerous micropores with a diameter of 25 nm;

(b) secondly, allowing one of the surfaces of the anodized aluminum to form the printing surface;

(c) Then, the aluminum material is subjected to three-dimensional bending forming by stamping;

(d) Furthermore, place the aluminum material that has been bent and formed with an anodic oxide film into a cavity of the desired shape in the mold, and inject molten plastic into a part of the anodic oxide film exposed in the cavity, and melt it. A part of the plastic is filled into the countless micropores on the surface of the anodized film, and the molten plastic in the cavity is pressurized to accelerate the filling and forming.

Example 35.

A method for manufacturing a composite product, comprising the steps of:

(a) Use the electrolyte solution of sodium hydroxide in step 2 of Example 7 to implement anodizing treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material is formed by countless micropores with a diameter of 95 nm. Anodized film;

(b) secondly, allowing one of the surfaces of the anodized aluminum to form the printing surface;

(c) Then, carry out three-dimensional bending forming of the aluminum material by stamping;

(d) Furthermore, part of the aluminum material that has been bent and formed with an anodized film is placed in a cavity of the desired shape in the mold, and a part of the anodized film exposed in the cavity is injected with molten plastic, melted A part of the plastic is filled into the countless micropores on the surface of the anodized film, and the molten plastic in the cavity is pressurized to accelerate the filling and forming.

Example 36.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, the printing surface is subjected to three-dimensional bending by stamping;

(c) Next, on the other side of the bent aluminum material that has not been printed, use the electrolytic solution of phosphoric acid in step 2 of Example 2 to perform anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so that the plate-shaped aluminum material An anodic oxide film formed by numerous micropores with a diameter of 120nm is formed on the surface of the

(d) Furthermore, place a part of the aluminum material formed with the anodized film in a cavity of the desired shape in the mold, inject molten plastic into a part of the anodized film exposed in the cavity, and fill a part of the molten plastic Into the countless micropores on the surface of the anodized film, and at the same time pressurize the molten plastic in the cavity to accelerate filling and forming.

Example 37.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, the printing surface is subjected to two-dimensional bending by stamping;

(c) Next, on the other side of the bent aluminum material that has not been printed, anodize and oxidize both sides of the plate-shaped aluminum material using the nitric acid electrolyte in Step 2 of Example 5, so that the plate-shaped aluminum material The surface of the aluminum material forms an anodic oxide film formed by numerous micropores with a diameter of 25nm;

(d) Furthermore, all the aluminum material formed with the anodized film is placed in a cavity of the desired shape in the mold, and a part of the anodized film exposed in the cavity is injected with molten plastic, and a part of the molten plastic is filled Into the countless micropores on the surface of the anodized film, and at the same time pressurize the molten plastic in the cavity to accelerate filling and forming.

Example 38.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, the printing surface is subjected to two-dimensional bending by stamping;

(c) Next, on the other side of the bent aluminum material that has not been printed, use the electrolyte solution of sodium hydroxide in step 2 of Example 8 to perform anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so that the An anodized film formed by numerous micropores with a diameter of 105nm is formed on the surface of the plate-shaped aluminum material;

(d) Furthermore, place a part of the aluminum material formed with the anodized film in a cavity of the desired shape in the mold, inject molten plastic into a part of the anodized film exposed in the cavity, and fill a part of the molten plastic Into the countless micropores on the surface of the anodized film, and at the same time pressurize the molten plastic in the cavity to accelerate filling and forming.

Example 39.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, on the surface of the aluminum material that has not been printed, use the phosphoric acid electrolyte in step 2 of Example 3 to implement anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material is formed by countless Anodized film formed by micropores with a diameter of 110nm;

(c) Next, perform two-dimensional bending forming on the surface on which the anodized film is formed by pressing;

(d) Furthermore, a part of the aluminum material formed with the anodized film is placed in a cavity of the required shape in the mold, and a part of the anodized film exposed in the cavity is injected with molten plastic, and a part of the molten plastic is filled in the mold cavity. In the countless micropores on the surface of the anodized film, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Example 40.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Secondly, on the surface of the aluminum material that has not been printed, use the electrolyte solution of nitric acid described in step 2 of Example 6 to implement anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material is formed. Anodized film formed by numerous micropores with a diameter of 120nm;

(c) Next, three-dimensional bending is performed on the surface on which the anodized film is formed by pressing;

(d) Furthermore, all the aluminum material formed with the anodized film is placed in the cavity of the required shape in the mold, and the molten plastic is injected into all the anodized film exposed in the cavity, and a part of the molten plastic is filled in the mold cavity. In the countless micropores on the surface of the anodized film, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Example 41.

A kind of manufacture method of composite product, it comprises the steps:

(a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface;

(b) Next, on the surface that is not printed on the aluminum material, use the electrolyte solution of sodium hydroxide described in step 2 of Example 9 to implement anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material An anodic oxide film formed by numerous micropores with a diameter of 25nm is formed on the surface;

(c) Next, three-dimensional bending is performed on the surface on which the anodized film is formed by pressing;

(d) Furthermore, a part of the aluminum material formed with the anodized film is placed in a cavity of the required shape in the mold, and a part of the anodized film exposed in the cavity is injected with molten plastic, and a part of the molten plastic is filled in the mold cavity. In the countless micropores on the surface of the anodized film, the molten plastic in the cavity is pressurized to accelerate filling and forming.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (14)

1. The manufacturing method of the compound product that aluminum material and plastics are integrated is characterized in that: it comprises the steps:   Step 1. Clean the aluminum material with acid or lye to remove the oil on the surface of the aluminum material; Step 2. Immerse the cleaned aluminum material in step 1 in the electrolyte of phosphoric acid, nitric acid or sodium hydroxide, and anodize the surface of the aluminum material by direct current electrolysis, so that the surface of the aluminum material is formed by numerous micropores. Anodized film, at least 85% of the micropores formed on the surface of aluminum are micropores with a diameter of 25nm~120nm; Step 3, baking the aluminum material with the anodized film formed in step 2 at 80° C. to 150° C. for 5 minutes to 30 minutes; Step 4, preheating the aluminum material that has been baked in step 3 so that the temperature of the aluminum material reaches 100° C. to 250° C.; Step 5, placing part or all of the aluminum material that reaches 100°C to 250°C in step 4 in a cavity with the desired shape in the mold, injecting molten plastic into the cavity, and a part of the molten plastic Fill the countless micropores on the surface of the anodized film of the aluminum material, and at the same time use the screw to fill the molten plastic in the cavity by means of pressurization and acceleration; The pressure applied by the molten plastic is 80MPa~400MPa, and the speed at which the screw presses the molten plastic in the cavity is 100mm/s~1000mm/s; Step 6: After the molten plastic in the cavity is filled and shaped, the cavity is baked at a temperature of 120°C to 180°C for 2 hours to 6 hours to obtain aluminum and plastic All-in-one composite. 2. The method for manufacturing a composite product that combines aluminum and plastic as claimed in claim 1, characterized in that: in the second step, the aluminum material is immersed in a liquid at a temperature of 10°C to 30°C, and the weight percentage is In an aqueous phosphoric acid solution of 1.2% to 1.35%, the aluminum material is used as an anode, and the electrolysis is carried out for 5 minutes to 25 minutes with a direct current with a voltage of 20V~100V and a current density of 0.5A/dm2~2A/dm2. In this way, an anodized film with numerous micropores with a diameter of 30 nm to 120 nm is formed on the surface of the aluminum material. 3. The method for manufacturing composites of aluminum material and plastic integrated according to claim 1, characterized in that: in the second step, the aluminum material is immersed in a liquid temperature of 10°C~30°C, the weight percentage In an aqueous nitric acid solution of 0.5% to 0.8%, the aluminum material is used as an anode, and the electrolysis is carried out for 5 minutes to 25 minutes with a direct current with a voltage of 20V to 50V and a current density of 0.5A/dm2 to 1.5A/dm2, In this way, an anodized film with countless micropores with a diameter of 30 nm to 120 nm is formed on the surface of the aluminum material. 4. The method for manufacturing a composite product in which aluminum material and plastic are integrally combined according to claim 1, characterized in that: in the second step, the aluminum material is immersed in a liquid with a temperature of 10°C~30°C and a molar concentration of In an aqueous sodium hydroxide solution of 0.05mol/L~0.3mol/L, the aluminum material is used as an anode, and a direct current with a voltage of 15~45V and a current density of 0.5A/dm2~3A/dm2 is used for 5 minutes~25 Minutes of electrolysis, thereby forming an anodized film with countless micropores with a diameter of 30nm~120nm on the surface of the aluminum material. 5. The method for manufacturing a composite product in which aluminum material and plastic are integrally combined according to claim 1, characterized in that: in step five, the mold is heated to 140°C~200°C in advance, and then step four Part or all of the aluminum material reaching 100°C to 250°C is placed in a cavity with the required shape in the mold, and the molten plastic in the cavity is pressurized and accelerated to form. 6. The method for manufacturing a composite product in which aluminum material and plastic are integrally combined according to any one of claims 1 to 5, characterized in that: using plate-shaped or die-cast aluminum material or processing the aluminum material by stamping The aluminum material made after two-dimensional or three-dimensional bending is formed by injecting molten plastic on all or part of the anodized film of the aluminum material to form a molded body of molten plastic corresponding to the shape of the cavity , and at the same time, a part of the molten plastic is bonded in the state of occlusal bonding in the numerous micropores on the anodized film. 7. The composite product manufactured by the method for manufacturing a composite product in which aluminum material and plastic are integrally combined according to any one of claims 1 to 6. 8. A method for manufacturing a composite product after post-treatment, characterized in that: in the method for manufacturing a composite product in which aluminum and plastic are integrally combined according to any one of claims 1 to 6, the anodic oxidation of the aluminum material The countless micropores on the film are formed by the injected molten plastic into a molten plastic molded body, and then the composite product is bonded in a bite joint state. Coating with permanent paint to form a corrosion-resistant coating film. 9. A method for manufacturing a composite product after post-treatment, characterized in that: in any one of claims 1 to 6, in the method for manufacturing a composite product integrated with aluminum and plastic, the anodic oxidation of the aluminum material After the countless micropores on the film are molded into a molten plastic molded body by the injected molten plastic and the composite product is bonded in a bite joint state, the surface of the anodized film not covered by the molten plastic on the composite product is processed. Remove the film, electrolyze with a sulfuric acid bath to form a corrosion-resistant film of sulfuric acid anodic oxidation, and then apply colored or non-colored sealing treatment. 10. The manufacturing method of a post-processed composite product according to claim 8 or 9, characterized in that: the molten plastic formed by injection molding into a molten plastic molded body has the ability to absorb heat produced by rapid temperature changes. The difference in linear expansion between the aluminum and the molten plastic is the coefficient of elasticity of the molten plastic. 11. the composite product manufactured by the manufacturing method of a kind of composite product after implementing post-treatment described in any one of claim 8 or 9 or 10. 12. A method for manufacturing a composite product, characterized in that: it comprises the steps of: (a) using the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in step 2 of claim 1 to implement anodizing treatment on both sides of the plate-shaped aluminum material, so that the surface of the plate-shaped aluminum material is formed by countless diameters of Anodized film formed by micropores of 25nm~120nm; (b) secondly, allowing one of the surfaces of the anodized aluminum to form the printing surface; (c) Then, carry out two-dimensional or three-dimensional bending forming of the aluminum material by stamping; (d) Furthermore, part or all of the aluminum material that has been bent and formed with an anodized film is placed in a cavity of the desired shape in the mold, and a part or all of the anodized film exposed in the cavity is All the molten plastic is injected, and a part of the molten plastic is filled into numerous micropores on the surface of the anodized film, and the molten plastic in the cavity is pressurized to accelerate filling and forming. 13. A method for manufacturing a composite product, characterized in that: it comprises the steps of: (a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface; (b) Secondly, the printing surface is subjected to two-dimensional or three-dimensional bending forming by stamping; (c) Next, on the other side of the bent aluminum material that has not been printed, use the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in claim 1 step 2 to implement anodic oxidation on both sides of the plate-shaped aluminum material treatment, so that the surface of the plate-shaped aluminum material forms an anodic oxide film formed by numerous micropores with a diameter of 25nm to 120nm; (d) Furthermore, a part or all of the aluminum material formed with the anodic oxide film is placed in a cavity of the required shape in the mold, and a part or all of the anodic oxide film exposed in the cavity is shot and melted. Plastic, a part of the molten plastic is filled into the countless micropores on the surface of the anodized film, and at the same time, the molten plastic in the cavity is pressurized to accelerate filling and forming. 14. A method for manufacturing a composite product, characterized in that: it comprises the steps of: (a) One of the surfaces of the plate-shaped aluminum material is formed as the printing surface; (b) Secondly, on the surface of the aluminum material that has not been printed, use the electrolytic solution of phosphoric acid or nitric acid or sodium hydroxide described in claim 1 step 2 to implement anodizing and oxidation treatment on both sides of the plate-shaped aluminum material, so as to making the surface of the plate-shaped aluminum material form an anodized film formed by numerous micropores with a diameter of 25nm to 120nm; (c) Next, perform two-dimensional or three-dimensional bending forming on the surface on which the anodized film is formed by pressing; (d) Furthermore, a part or all of the aluminum material formed with the anodic oxide film is placed in a cavity of the required shape in the mold, and a part or all of the anodic oxide film exposed in the cavity is shot and melted. Plastic, a part of the molten plastic is filled into the countless micropores on the surface of the anodized film, and at the same time, the molten plastic in the cavity is pressurized to accelerate filling and forming.