CN105420645B - Forging and pressing treatment process for aluminum material - Google Patents

Abstract

The invention discloses a forging and pressing treatment process of an aluminum material, which comprises the following steps: providing an aluminum material to be treated, wherein the aluminum material is an O-state aluminum material; cleaning an aluminum material, and then sequentially performing oil immersion treatment and forming treatment to obtain a semi-finished product of a workpiece; carrying out solid solution treatment after punching and trimming the semi-finished product of the workpiece; and carrying out aging treatment on the semi-finished product of the workpiece after solid solution to obtain the workpiece after the aging treatment is finished. The forging and pressing treatment process of the aluminum material achieves the purpose of improving the hardness of the aluminum material by carrying out solution treatment and aging treatment on the O-state aluminum material at the temperature of 500-560 ℃ for 1-2 h and at the temperature of 165-185 ℃ for 6-10 h, and the processed workpiece reaches the required hardness through detection. Compared with the traditional aluminum material forging treatment process, the aluminum material forging treatment process does not need to carry out annealing heat treatment on the aluminum material before the forming process, thereby reducing the complexity of operation and lowering the cost.

Description

Aluminum forging process

technical field

The invention relates to the processing field of a middle plate or a bottom plate of a mobile terminal device, in particular to a forging process of an aluminum material.

Background technique

At present, the raw material for the preparation and processing of the middle plate or bottom plate of mobile terminal equipment (eg, mobile phone, tablet computer) is usually aluminum, but commercially purchased aluminum cannot be used directly due to its own hardness and other problems.

The traditional aluminum forging process usually requires the aluminum to be annealed before the forming process to achieve the required hardness. This processing method greatly increases the complexity of the operation, and at the same time, the cost is relatively high.

Contents of the invention

Based on this, it is necessary to provide a forging process for aluminum materials that does not require annealing heat treatment before forming.

A forging treatment process for aluminum materials, comprising the steps of:

Provide the aluminum material to be processed, the aluminum material is an O-state aluminum material;

After the aluminum material is cleaned, oil immersion treatment and molding treatment are performed sequentially to obtain a semi-finished workpiece;

Punching and trimming the semi-finished workpiece and then performing solution treatment, the temperature of the solution treatment is 500°C-560°C, and the time of the solution treatment is 1h-2h; and

Aging treatment is carried out on the workpiece semi-finished product after solid solution, and the workpiece is obtained after completion. The temperature of the aging treatment is 165°C-185°C, and the time of the aging treatment is 6h-10h.

In one embodiment, the operation of cleaning the aluminum material is as follows: preparing an aluminum cleaning agent solution with a mass percent concentration of 2% to 6%, immersing the aluminum material in the aluminum cleaning agent solution for 3 minutes to After 5 minutes, take it out and wash it with water.

In one embodiment, the operation of the oil immersion treatment specifically includes: immersing the aluminum material in a mixed liquid of cleaning agent and vegetable oil with a volume ratio of 20-23:1.4-1.6, and taking it out after fully soaking.

In one embodiment, the cleaning agent is 141 cleaning agent, and the vegetable oil is peanut oil.

In one embodiment, in the mixed liquid, the volume ratio of the cleaning agent to the vegetable oil is 21.5:1.5.

In one embodiment, the temperature of the solution treatment is 530° C., and the time of the solution treatment is 1.5 hours.

In one embodiment, the temperature of the aging treatment is 175° C., and the time of the aging treatment is 8 hours.

In one embodiment, it further includes the operation of performing shaping treatment on the semi-finished workpiece after the solution treatment and before the aging treatment.

The forging treatment process of this kind of aluminum material is through solution treatment and aging treatment of O-state aluminum material. ℃～185℃, the aging treatment time is 6h～10h, which achieves the purpose of improving the hardness of the aluminum material, and the processed workpiece reaches the required hardness after testing. Compared with the traditional aluminum forging process, the aluminum forging process does not need to undergo annealing heat treatment before the forming process, which reduces the complexity of the operation and reduces the cost.

Description of drawings

FIG. 1 is a flowchart of an aluminum forging treatment process according to an embodiment.

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

The forging treatment process of aluminum material of an embodiment as shown in Figure 1, comprises the following steps:

S10, providing the aluminum material to be processed.

The aluminum material is O state aluminum material.

O-state aluminum can be purchased directly. For example, available from Jinqiao Aluminum.

S20. After cleaning the aluminum material obtained in S10, performing oil immersion treatment and forming treatment in sequence to obtain a semi-finished workpiece.

The operation of cleaning the aluminum material is as follows: prepare an aluminum cleaning agent solution with a mass percentage concentration of 2% to 6%, immerse the aluminum material in the aluminum cleaning agent solution, take it out after 3 minutes to 5 minutes, and wash it with water.

The operation of oil immersion treatment is as follows: immerse the aluminum material in the mixed liquid of cleaning agent and vegetable oil with a volume ratio of 20-23:1.4-1.6, take it out after fully soaking.

The oil immersion treatment is beneficial to the material removal and fullness of the forging process in the subsequent process, and reduces the number of forging presses.

The cleaning agent can be 141 cleaning agent, and the vegetable oil can be peanut oil. Preferably, in the mixed liquid, the volume ratio of the cleaning agent to the vegetable oil is 21.5:1.5.

The specific operation of the forming process is as follows: placing the aluminum material in the cavity of the forming mold, and forming a semi-finished workpiece with a certain shape and size under the action of a preset pressure.

S30, performing solid solution treatment after punching and trimming the semi-finished workpiece.

Punching and trimming are routine operations and are performed as required.

The temperature of the solution treatment may be 500° C. to 560° C., and the time of the solution treatment may be 1 h to 2 h.

The purpose of solid solution treatment is to improve the plasticity and toughness of aluminum (reduce hardness and increase ductility), prepare for precipitation hardening treatment, and then precipitate the strengthening phase through precipitation treatment to increase strength and hardness.

Preferably, the temperature of the solution treatment is 530° C., and the time of the solution treatment may be 1.5 hours.

S40. Perform aging treatment on the solid-solution semi-finished workpiece obtained in S30, and obtain the workpiece after completion.

The temperature of the aging treatment may be 165°C-185°C, and the time of the aging treatment may be 6h-10h.

The purpose of aging treatment is to eliminate the internal stress of the workpiece, stabilize the structure and size, improve mechanical properties, etc. (increase hardness and tensile strength, but lower ductility).

Preferably, the aging treatment temperature is 175° C., and the aging treatment time is 8 hours.

In this embodiment, the aluminum forging treatment process also includes the operation of shaping the semi-finished workpiece after the solution treatment and before the aging treatment.

Shaping treatment is specifically: processing the deformation that occurs in the semi-finished workpiece during processing.

The forging treatment process of this kind of aluminum material is through solution treatment and aging treatment of O-state aluminum material. ℃～185℃, the aging treatment time is 6h～10h, which achieves the purpose of improving the hardness of the aluminum material, and the processed workpiece reaches the required hardness after testing. Compared with the traditional aluminum forging process, the aluminum forging process does not need to undergo annealing heat treatment before the forming process, which reduces the complexity of the operation and reduces the cost.

The following are specific examples.

Example 1

Provide O-state aluminum materials to be processed, and O-state aluminum materials are purchased from Jinqiao Aluminum.

After the O-state aluminum material is cleaned, oil immersion treatment and molding treatment are performed sequentially to obtain a semi-finished workpiece. Among them, the solution used in the oil immersion treatment is a mixed liquid of 141 cleaning agent and peanut oil with a volume ratio of 23:1.4.

After punching and trimming the semi-finished workpiece, solution treatment is carried out. The temperature of solution treatment is 530°C, and the time of solution treatment is 1.5h.

Aging treatment is carried out on the semi-finished workpiece after solid solution, and the workpiece is obtained after completion. The aging treatment temperature is 175° C., and the aging treatment time is 8 hours.

Example 2

Provide O-state aluminum materials to be processed, and O-state aluminum materials are purchased from Jinqiao Aluminum.

After the O-state aluminum material is cleaned, oil immersion treatment and molding treatment are performed sequentially to obtain a semi-finished workpiece. Among them, the solution used in the oil immersion treatment is a mixed liquid of 141 cleaning agent and peanut oil with a volume ratio of 21.5:1.5.

After punching and cutting the semi-finished workpiece, solution treatment is carried out. The temperature of solution treatment is 500 ° C, and the time of solution treatment is 2 hours.

Aging treatment is carried out on the semi-finished workpiece after solid solution, and the workpiece is obtained after completion. The aging treatment temperature is 185° C., and the aging treatment time is 6 hours.

Example 3

Provide O-state aluminum materials to be processed, and O-state aluminum materials are purchased from Jinqiao Aluminum.

After the O-state aluminum material is cleaned, oil immersion treatment and molding treatment are performed sequentially to obtain a semi-finished workpiece. Among them, the solution used in the oil immersion treatment is a mixed liquid of 141 cleaning agent and peanut oil with a volume ratio of 20:1.6.

After punching and cutting the semi-finished workpiece, solution treatment is carried out. The temperature of solution treatment is 560 ° C, and the time of solution treatment is 2 hours.

Aging treatment is carried out on the semi-finished workpiece after solid solution, and the workpiece is obtained after completion. The aging treatment temperature is 165° C., and the aging treatment time is 10 hours.

Example 4

Carry out hardness test to the workpiece that embodiment 1～3 makes respectively, specifically: after the workpiece that embodiment 1～3 makes is about to measure hardness position polishing (remove surface impurity, be beneficial to the accuracy of hardness), through maintenance Hardness tester (HV-100A) for hardness measurement.

After testing, the hardness of the workpieces prepared in Examples 1-3 is shown in the table below.

It can be seen from the above table that in Examples 1 to 3, the purpose of improving the hardness of the O-state aluminum material is achieved by performing the forging process on the O-state aluminum material, and the processed workpiece reaches the required hardness after testing.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. A kind of forging process of aluminum material, is characterized in that, comprises the steps: Provide the aluminum material to be processed, the aluminum material is an O-state aluminum material; After the aluminum material is cleaned, oil immersion treatment and molding treatment are performed sequentially to obtain a semi-finished workpiece. The specific operation of the oil immersion treatment is: immerse the aluminum material in a cleaning agent with a volume ratio of 20-23:1.4-1.6 In the mixed liquid with vegetable oil, take out after fully infiltrating; Punching and trimming the semi-finished workpiece and then performing solution treatment, the temperature of the solution treatment is 500°C-560°C, and the time of the solution treatment is 1h-2h; and Aging treatment is carried out on the workpiece semi-finished product after solid solution, and the workpiece is obtained after completion. The temperature of the aging treatment is 165°C-185°C, and the time of the aging treatment is 6h-10h. 2. The forging process of aluminum material according to claim 1, characterized in that the operation of cleaning the aluminum material is specifically: preparing an aluminum cleaning agent solution with a concentration of 2% to 6% by mass, and dissolving The aluminum material is submerged in the aluminum cleaning agent solution, taken out after 3 minutes to 5 minutes, and washed with clean water. 3. The aluminum forging treatment process according to claim 1, characterized in that, the cleaning agent is 141 cleaning agent, and the vegetable oil is peanut oil. 4. The forging process of aluminum material according to claim 1, characterized in that, in the mixed liquid, the volume ratio of the cleaning agent to the vegetable oil is 21.5:1.5. 5 . The aluminum forging treatment process according to claim 1 , characterized in that the temperature of the solution treatment is 530° C. and the time of the solution treatment is 1.5 hours. 5 . 6 . The forging treatment process of aluminum material according to claim 1 , characterized in that, the temperature of the aging treatment is 175° C., and the time of the aging treatment is 8 hours. 7 . The aluminum forging treatment process according to claim 1 , further comprising, after the solution treatment and before the aging treatment, performing shaping treatment on the semi-finished workpiece. 8 .