CN114130880A - A kind of anti-wrinkle stamping process of heat shield - Google Patents
A kind of anti-wrinkle stamping process of heat shield Download PDFInfo
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- CN114130880A CN114130880A CN202111300681.XA CN202111300681A CN114130880A CN 114130880 A CN114130880 A CN 114130880A CN 202111300681 A CN202111300681 A CN 202111300681A CN 114130880 A CN114130880 A CN 114130880A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
本发明公开了一种隔热罩防褶皱冲压工艺，具体包括以下步骤：S1、中间层隔热材料的配料，S2、中间层隔热材料的制备，S3、金属板材的加工，S4、涂料，S5、隔热罩成品加工：将步骤S4得到的隔热罩坯体拉延成型，将隔热罩坯体切边，再对边缘进行整平叠合成整体，即可制得隔热罩成品，本发明涉及发动机配件生产技术领域。该隔热罩防褶皱冲压工艺，可实现通过增加纤维隔热材料与两层金属板之间的粘合力，来避免相对滑移引起褶皱，很好的达到了进行大弧度冲压防褶皱的目的，不仅能对一些小冲压弧度适用，而且对于一些大弧度冲压则无法实现很好的防褶皱效果，从而大大方便了人们的使用。
The invention discloses an anti-wrinkle stamping process for a heat shield, which specifically includes the following steps: S1, the ingredients of the intermediate layer thermal insulation material, S2, the preparation of the intermediate layer thermal insulation material, S3, the processing of the metal plate, S4, the coating, S5. Processing of the finished heat shield: the heat shield blank obtained in step S4 is drawn and formed, the edges of the heat shield blank are trimmed, and then the edges are leveled and stacked into a whole to obtain the finished heat shield. The invention relates to the technical field of engine parts production. The anti-wrinkle stamping process of the heat shield can realize the increase of the adhesive force between the fiber thermal insulation material and the two layers of metal plates, so as to avoid the relative slippage caused by the wrinkle, and well achieve the purpose of large-arc stamping and anti-wrinkle. , not only can be applied to some small stamping radians, but also cannot achieve a good anti-wrinkle effect for some large radian stampings, which greatly facilitates people's use.
Description
Technical Field
The invention relates to the technical field of production of engine accessories, in particular to a heat shield wrinkle-preventing stamping process.
Background
The automobile engine is a device for providing power for an automobile, is the heart of the automobile and determines the dynamic property, the economical efficiency, the stability and the environmental protection property of the automobile. According to different power sources, automobile engines can be divided into diesel engines, gasoline engines, electric automobile motors and hybrid power, and common gasoline engines and diesel engines belong to reciprocating piston type internal combustion engines, and the common gasoline engines and the common diesel engines convert chemical energy of fuels into mechanical energy of piston motion and output power outwards. The gasoline engine has high rotating speed, low quality, low noise, easy starting and low manufacturing cost; the diesel engine has large compression ratio, high thermal efficiency, better economic performance and discharge performance than a gasoline engine, the heat shield structure of the engine exhaust manifold and the catalyst is a sandwich structure, two layers of the inner surface and the outer surface are of metal structures, and the middle layer is of ceramic fiber. The existing manufacturing process is to wrap a metal layer and ceramic fibers together, and then punch and form the metal layer and the ceramic fibers to achieve the shape of a product. The process generates a large amount of wrinkles in the drawing and forming process of materials, and the heat shield is very likely to crack from the wrinkles because of the long-term harsh working conditions of engine shaking, large temperature difference change, poor ventilation and the like in practical application.
The existing method for preventing the heat shield from wrinkling is to use common stamping and trimming for forming, so that wrinkling caused by relative slippage of two layers of metal plates and a heat insulation fiber layer is avoided, but the method is only suitable for small stamping radians, good wrinkling prevention effect cannot be achieved for large-radian stamping, wrinkling caused by relative slippage cannot be avoided by increasing the adhesive force between a fiber heat insulation material and the two layers of metal plates, and the purpose of preventing wrinkling during large-radian stamping cannot be achieved, so that great inconvenience is brought to the use of people.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a heat shield wrinkle-preventing stamping process, which solves the problems that the existing heat shield wrinkle-preventing method is formed by common stamping and trimming to avoid wrinkles caused by relative slippage of two layers of metal plates and a heat-insulating fiber layer, but the method is only suitable for small stamping radians, but can not realize good wrinkle-preventing effect for large-radian stamping, and can not realize the purpose of preventing wrinkles caused by relative slippage by increasing the adhesive force between a fiber heat-insulating material and two layers of metal plates, and can not achieve the purpose of large-radian stamping and wrinkle prevention.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a thermal shield fold-prevention stamping process specifically comprises the following steps:
s1, compounding of the intermediate layer heat insulation material: firstly, respectively measuring the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive in required weight parts by using proportioning equipment;
s2, preparing the intermediate layer heat insulation material: sequentially adding the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive weighed in the step S1 into a mixing and stirring device, and mixing and stirring for 1-2h under the conditions that the temperature is 200-;
s3, processing of the metal plate: respectively carrying out cutting, polishing, deburring and cleaning treatment on the required metal plate blank by machining equipment to obtain the required metal plate;
s4, coating: coating the heat insulation material slurry prepared in the step S2 on one metal plate by coating equipment, pressing the other metal plate with the same size on the heat insulation material after coating, and uniformly spreading the heat insulation material between the two plates by using flat pressing equipment to apply 2-3Mpa of extrusion force to the upper plate so as to obtain a heat insulation cover blank;
s5, processing of a heat shield finished product: and (5) drawing and forming the heat shield blank obtained in the step (S4), cutting edges of the heat shield blank, leveling and laminating the edges to form a whole, and thus obtaining a finished heat shield.
Preferably, the raw materials of the intermediate layer heat-insulating material in the step S1 include, by weight, 20-40 parts of composite bentonite filler, 5-10 parts of activated carbon, 5-10 parts of composite aerogel filler, 20-30 parts of heat-insulating composite fiber, and 5-10 parts of hot-melt adhesive.
Preferably, the raw materials of the interlayer heat insulating material in the step S1 include, by weight, 30 parts of composite bentonite filler, 7 parts of activated carbon, 7 parts of composite aerogel filler, 25 parts of heat insulating composite fiber, and 7 parts of hot melt adhesive.
Preferably, the raw materials of the interlayer heat insulating material in the step S1 include, by weight, 20 parts of composite bentonite filler, 5 parts of activated carbon, 5 parts of composite aerogel filler, 20 parts of heat insulating composite fiber, and 5 parts of hot melt adhesive.
Preferably, the raw materials of the intermediate layer heat insulating material in the step S1 include, by weight, 40 parts of composite bentonite filler, 10 parts of activated carbon, 10 parts of composite aerogel filler, 30 parts of heat insulating composite fiber, and 10 parts of hot melt adhesive.
Preferably, in step S1, the composite bentonite filler is any combination of two or more of sodium bentonite, potassium bentonite, calcium bentonite or sodium potassium calcium bentonite.
Preferably, the composite aerogel filler in step S1 is any combination of two or more of silica aerogel, titania aerogel, alumina aerogel, iron oxide aerogel, copper oxide aerogel or zirconia aerogel.
Preferably, the insulation composite fiber in step S1 is any combination of two or more of ceramic fiber, zirconium crystal fiber or high-alumina fiber.
Preferably, the hot melt adhesive in step S1 is any combination of two or more of polyurethane, polystyrene or polyacrylate.
(III) advantageous effects
The invention provides a heat shield wrinkle-preventing stamping process. Compared with the prior art, the method has the following beneficial effects: the heat shield anti-wrinkle stamping process specifically comprises the following steps: s1, compounding of the intermediate layer heat insulation material: firstly, respectively measuring the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive in required weight parts by using proportioning equipment; s2, preparing the intermediate layer heat insulation material: sequentially adding the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive weighed in the step S1 into a mixing and stirring device, and mixing and stirring for 1-2h under the conditions that the temperature is 200-; s3, processing of the metal plate: respectively carrying out cutting, polishing, deburring and cleaning treatment on the required metal plate blank by machining equipment to obtain the required metal plate; s4, coating: coating the heat insulation material slurry prepared in the step S2 on one metal plate by coating equipment, pressing the other metal plate with the same size on the heat insulation material after coating, and uniformly spreading the heat insulation material between the two plates by using flat pressing equipment to apply 2-3Mpa of extrusion force to the upper plate so as to obtain a heat insulation cover blank; s5, processing of a heat shield finished product: the heat shield blank obtained in the step S4 is drawn and molded, the heat shield blank is trimmed, the edges are leveled and overlapped into a whole, and a heat shield finished product can be prepared.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides three technical solutions: a thermal shield wrinkle-preventing stamping process specifically comprises the following embodiments:
example 1
S1, compounding of the intermediate layer heat insulation material: firstly, respectively measuring the required weight parts of composite bentonite filler, active carbon, composite aerogel filler, heat-insulating composite fiber and hot-melt adhesive by using proportioning equipment, wherein the raw materials of the interlayer heat-insulating material comprise 30 parts of composite bentonite filler, 7 parts of active carbon, 7 parts of composite aerogel filler, 25 parts of heat-insulating composite fiber and 7 parts of hot-melt adhesive according to the weight parts, the composite bentonite filler is sodium bentonite and potassium bentonite, the composite aerogel filler is a composition of silica aerogel, titanium dioxide aerogel, alumina aerogel, ferric oxide aerogel, copper oxide aerogel and zirconia aerogel, the heat-insulating composite fiber is a composition of ceramic fiber, zirconium crystal fiber and high-aluminum fiber, and the hot-melt adhesive is a composition of polyurethane, polystyrene and polyacrylate;
s2, preparing the intermediate layer heat insulation material: sequentially adding the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive weighed in the step S1 into a mixing and stirring device, mixing and stirring for 1.5 hours at the temperature of 250 ℃ and the rotating speed of 700r/min, and mixing the raw materials into slurry to obtain heat-insulating material slurry;
s3, processing of the metal plate: respectively carrying out cutting, polishing, deburring and cleaning treatment on the required metal plate blank by machining equipment to obtain the required metal plate;
s4, coating: coating the heat insulation material slurry prepared in the step S2 on one metal plate by coating equipment, pressing the other metal plate with the same size on the heat insulation material after coating, and uniformly spreading the heat insulation material between the two plates by using flat pressing equipment to apply an extrusion force of 2.5Mpa to the upper plate so as to obtain a heat insulation cover blank;
s5, processing of a heat shield finished product: and (5) stamping and drawing the heat shield blank obtained in the step (S4) for forming, cutting edges of the heat shield blank, leveling and laminating the edges to form a whole, and thus obtaining a finished heat shield.
Example 2
S1, compounding of the intermediate layer heat insulation material: firstly, respectively measuring required parts by weight of composite bentonite filler, active carbon, composite aerogel filler, heat-insulating composite fiber and hot-melt adhesive by using a batching device, wherein the raw materials of the interlayer heat-insulating material comprise 20 parts of composite bentonite filler, 5 parts of active carbon, 5 parts of composite aerogel filler, 20 parts of heat-insulating composite fiber and 5 parts of hot-melt adhesive according to the parts by weight, the composite bentonite filler is a composition of sodium bentonite and potassium bentonite, the composite aerogel filler is a composition of silica aerogel, titanium dioxide aerogel and alumina aerogel, the heat-insulating composite fiber is a composition of ceramic fiber and zirconium crystal fiber, and the hot-melt adhesive is a composition of polyurethane and polystyrene;
s2, preparing the intermediate layer heat insulation material: sequentially adding the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive weighed in the step S1 into a mixing and stirring device, mixing and stirring for 1h under the conditions that the temperature is 200 ℃ and the rotating speed is 600r/min, and mixing the raw materials into slurry to obtain heat-insulating material slurry;
s3, processing of the metal plate: respectively carrying out cutting, polishing, deburring and cleaning treatment on the required metal plate blank by machining equipment to obtain the required metal plate;
s4, coating: coating the heat insulation material slurry prepared in the step S2 on one metal plate by coating equipment, pressing the other metal plate with the same size on the heat insulation material after coating, and uniformly spreading the heat insulation material between the two plates by using flat pressing equipment to apply 2Mpa of extrusion force to the upper plate so as to obtain a heat insulation cover blank;
s5, processing of a heat shield finished product: and (5) stamping and drawing the heat shield blank obtained in the step (S4) for forming, cutting edges of the heat shield blank, leveling and laminating the edges to form a whole, and thus obtaining a finished heat shield.
Example 3
S1, compounding of the intermediate layer heat insulation material: firstly, respectively measuring composite bentonite filler, active carbon, composite aerogel filler, heat-insulating composite fiber and hot-melt adhesive in required weight parts by using a batching device, wherein the raw material of the interlayer heat-insulating material comprises 40 parts of composite bentonite filler, 10 parts of active carbon, 10 parts of composite aerogel filler, 30 parts of heat-insulating composite fiber and 10 parts of hot-melt adhesive in parts by weight, the composite bentonite filler is a composition of calcium bentonite and sodium potassium calcium bentonite, the composite aerogel filler is a composition of iron oxide aerogel, copper oxide aerogel and zirconium oxide aerogel, the heat-insulating composite fiber is a composition of zirconium crystal fiber and high-aluminum fiber, and the hot-melt adhesive is a composition of polystyrene and polyacrylate;
s2, preparing the intermediate layer heat insulation material: sequentially adding the composite bentonite filler, the activated carbon, the composite aerogel filler, the heat-insulating composite fiber and the hot-melt adhesive weighed in the step S1 into a mixing and stirring device, mixing and stirring for 2 hours at the temperature of 300 ℃ and the rotating speed of 800r/min, and mixing the raw materials into slurry to obtain heat-insulating material slurry;
s3, processing of the metal plate: respectively carrying out cutting, polishing, deburring and cleaning treatment on the required metal plate blank by machining equipment to obtain the required metal plate;
s4, coating: coating the heat insulation material slurry prepared in the step S2 on one metal plate by coating equipment, pressing the other metal plate with the same size on the heat insulation material after coating, and uniformly spreading the heat insulation material between the two plates by using flat pressing equipment to apply 3Mpa extrusion force to the upper plate so as to obtain a heat insulation cover blank;
s5, processing of a heat shield finished product: and (5) stamping and drawing the heat shield blank obtained in the step (S4) for forming, cutting edges of the heat shield blank, leveling and laminating the edges to form a whole, and thus obtaining a finished heat shield.
In conclusion, the invention can avoid wrinkles caused by relative sliding by increasing the adhesive force between the fiber heat-insulating material and the two layers of metal plates, well achieve the purpose of preventing wrinkles by large-radian stamping, not only can be suitable for small-radian stamping, but also can not realize good wrinkle-preventing effect for large-radian stamping, thereby being greatly convenient for people to use.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
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