阅读说明：本技术 一种电容器铝壳自动化生产线加工工艺 (Capacitor aluminum shell automatic production line machining process ) 是由 钱江明 钱宗建 顾志军 周建 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种电容器铝壳自动化生产线加工工艺,包括以下步骤：步骤一、加热上料,将铝壳毛坯使用热处理炉加热至200-230摄氏度时,取出并放置在托盘中空置1-2min。本发明中,电容器铝壳采用上料-冲压-切口-防爆-去应力-清洗的加工工艺,其中,在上料工序中,对铝壳毛坯进行预热,由此便于在冲压工序中冲压成型,减小变形应力,在防爆工序中,向铝壳内嵌套环氧树脂材质的防爆层,进一步提高防爆效果,去应力工序中,对嵌套防爆层的铝壳进行450-490摄氏度的去应力退火,由此可大大降低铝壳的内部应力,避免后续使用过程出现变形的情况,同时使其表面生成一定厚度的氧化层,进而提高铝壳的防爆等级。(The invention discloses a capacitor aluminum shell automatic production line processing technology, which comprises the following steps: step one, heating and feeding, namely heating the aluminum shell blank to the temperature of 200-230 ℃ by using a heat treatment furnace, taking out the aluminum shell blank, and placing the aluminum shell blank in a tray for 1-2min in the air. In the invention, the capacitor aluminum shell adopts a processing technology of loading, stamping, notching, explosion prevention, stress relief and cleaning, wherein in the loading process, an aluminum shell blank is preheated, so that the stamping forming in the stamping process is facilitated, the deformation stress is reduced, in the explosion prevention process, an explosion prevention layer made of epoxy resin is nested in the aluminum shell, the explosion prevention effect is further improved, in the stress relief process, the stress relief annealing at 450-490 ℃ is carried out on the aluminum shell nested with the explosion prevention layer, therefore, the internal stress of the aluminum shell can be greatly reduced, the deformation in the subsequent use process is avoided, meanwhile, an oxide layer with a certain thickness is generated on the surface of the aluminum shell, and the explosion prevention grade of the aluminum shell is further improved.)

1. The capacitor aluminum shell automatic production line processing technology is characterized by comprising the following steps of:

step one, heating and feeding, namely heating the aluminum shell blank to 230 ℃ by using a heat treatment furnace, taking out the aluminum shell blank, and placing the aluminum shell blank in a tray for 1-2min in a hollow manner;

step two, stamping, namely performing one-step stamping forming on the aluminum shell blank in the step one by using stamping equipment, maintaining the pressure for 2-3min, performing normal-temperature water contact cooling, continuing for 0.5-1min, and demolding and discharging;

step three, notching, namely notching the semi-finished aluminum shell blank formed in the step two, removing redundant materials at the notch, and polishing;

fourthly, explosion prevention, namely nesting an explosion prevention layer in the aluminum shell formed in the third step, wherein the thickness of the explosion prevention layer is 1-2 mm;

step five, stress removal, namely transferring the product in the step four to a heating furnace, and performing furnace cooling when the product is reheated to 450-490 ℃;

and step six, cleaning, namely putting the product cooled in the step five into a cleaning tank for soaking and washing, and naturally drying after washing.

2. The automatic production line processing technology for the capacitor aluminum shell as claimed in claim 1, wherein in the first step, the aluminum shell blank is heated to 200 ℃ by using a heat treatment furnace, and is taken out and left empty for 1 min.

3. The automatic production line machining process for the aluminum shell of the capacitor as claimed in claim 2, wherein in the second step, the stamping operation is performed in a room temperature environment of 23-30 ℃.

4. The automatic production line processing technology for capacitor aluminum cases as claimed in claim 3, wherein in the second step, the pressure is maintained for 2min, and the normal temperature water contact cooling is continued for 0.5 min.

5. The automatic production line processing technology for the capacitor aluminum shell as claimed in claim 4, wherein the explosion-proof layer is made of epoxy resin and has a thickness of 2 mm.

6. The automatic production line processing technology for the capacitor aluminum shell as claimed in claim 5, wherein in the fifth step, furnace cooling is performed when the temperature is reheated to 490 ℃.

Technical Field

The invention relates to the technical field of processing and manufacturing of capacitor aluminum shells, in particular to a processing technology of an automatic production line of a capacitor aluminum shell.

Background

At present, the processing of the aluminum shell of the capacitor generally comprises the following technological processes: punching, cutting, punching explosion-proof slot and polishing.

At present, because the condenser is higher to blast proof requirement level, and current processing technology promotes blast proof level through adopting on the casing to beat blast proof groove, the blast proof level has been improved to a certain extent, but blast proof level is lower, condenser aluminum hull is in punching press and incision and the course of working of beating blast proof groove, there is great stress in the casing inside, the casing is in the use, frequent thermal barrier shrinkage that carries on, because there is stress inside from this, crackle appears on the casing top layer easily, and then the ageing of casing is accelerated, and then reduce blast proof level.

Therefore, the invention provides a capacitor aluminum shell automatic production line processing technology

Disclosure of Invention

The invention aims to: the capacitor aluminum shell automatic production line processing technology is provided for solving the problem that the existing capacitor aluminum shell processing technology is difficult to meet the explosion-proof grade of an aluminum shell.

In order to achieve the purpose, the invention adopts the following technical scheme:

a capacitor aluminum shell automatic production line processing technology comprises the following steps: step one, heating and feeding, namely heating the aluminum shell blank to 230 ℃ by using a heat treatment furnace, taking out the aluminum shell blank, and placing the aluminum shell blank in a tray for 1-2min in a hollow manner;

step two, stamping, namely performing one-step stamping forming on the aluminum shell blank in the step one by using stamping equipment, maintaining the pressure for 2-3min, performing normal-temperature water contact cooling, continuing for 0.5-1min, and demolding and discharging;

step three, notching, namely notching the semi-finished aluminum shell blank formed in the step two, removing redundant materials at the notch, and polishing;

fourthly, explosion prevention, namely nesting an explosion prevention layer in the aluminum shell formed in the third step, wherein the thickness of the explosion prevention layer is 1-2 mm;

step five, removing stress, transferring the product in the step four to a heating furnace, and performing furnace cooling when the product is reheated to 450-490 ℃;

and step six, cleaning, namely putting the product cooled in the step five into a cleaning tank for soaking and washing, and naturally drying after washing.

As a further description of the above technical solution:

in the first step, the aluminum shell blank is heated to 200 ℃ by using a heat treatment furnace, and is taken out and left vacant for 1 min.

As a further description of the above technical solution:

and in the second step, performing stamping operation in a room temperature environment of 23-30 ℃.

As a further description of the above technical solution:

and step two, maintaining the pressure for 2min, and carrying out contact cooling on the water at normal temperature for 0.5 min.

As a further description of the above technical solution:

the explosion-proof layer is made of epoxy resin and has a thickness of 2mm

As a further description of the above technical solution:

and step five, when the temperature is reheated to 490 ℃, furnace cooling is carried out.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. in the invention, the capacitor aluminum shell adopts a processing technology of loading, stamping, notching, explosion prevention, stress relief and cleaning, wherein in the loading process, an aluminum shell blank is preheated, so that the stamping forming in the stamping process is facilitated, the deformation stress is reduced, in the explosion prevention process, an explosion prevention layer made of epoxy resin is nested in the aluminum shell, the explosion prevention effect is further improved, in the stress relief process, the stress relief annealing at 450-490 ℃ is carried out on the aluminum shell nested with the explosion prevention layer, therefore, the internal stress of the aluminum shell can be greatly reduced, the deformation in the subsequent use process is avoided, meanwhile, an oxide layer with a certain thickness is generated on the surface of the aluminum shell, and the explosion prevention grade of the aluminum shell is further improved.

Drawings

Fig. 1 is a schematic structural diagram of a flow chart of an automatic production line processing process for capacitor aluminum cases according to 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.

Example 1

Referring to fig. 1, an automatic production line processing process for an aluminum case of a capacitor includes the following steps: step one, heating and feeding, namely heating the aluminum shell blank to 230 ℃ by using a heat treatment furnace, taking out the aluminum shell blank and placing the aluminum shell blank in a tray for 1-2min, wherein the stamping force in the stamping procedure can be reduced by the mode, and the stress generated by deformation in the aluminum shell can be reduced;

step two, stamping, namely performing one-step stamping forming on the aluminum shell blank obtained in the step one by using stamping equipment, maintaining the pressure for 2-3min, performing normal-temperature water contact cooling for 0.5-1min, demolding, discharging, maintaining the pressure and cooling, and accelerating the shaping of the aluminum shell;

step three, notching, namely notching the semi-finished aluminum shell blank formed in the step two, removing redundant materials at the notch, and polishing;

fourthly, explosion prevention, namely embedding an explosion prevention layer in the aluminum shell formed in the third step, wherein the thickness of the explosion prevention layer is 1-2mm, the explosion prevention layer is embedded in the aluminum shell, the explosion prevention level can be improved, and the thickness is 1-2mm, so that the volume is not occupied;

step five, stress removal, namely transferring the product obtained in the step four to a heating furnace, cooling the furnace when the temperature is reheated to 450-;

and step six, cleaning, namely putting the product cooled in the step five into a cleaning tank for soaking and washing, and naturally drying after washing.

Example 2

Referring to fig. 1, an automatic production line processing process for an aluminum case of a capacitor includes the following steps: step one, heating and feeding, namely heating an aluminum shell blank to 200 ℃ by using a heat treatment furnace, taking out the aluminum shell blank, placing the aluminum shell blank in a tray, and idling for 1min, wherein the mode can reduce the stamping force in the stamping process, and simultaneously reduce the stress generated by deformation in the aluminum shell and shorten the processing time;

step two, stamping, namely performing stamping operation in a room temperature environment of 23-30 ℃, performing one-step stamping forming on the aluminum shell blank in the step one by using stamping equipment, maintaining the pressure for 2min, performing normal-temperature water contact cooling, continuing for 0.5min, demolding, discharging, maintaining the pressure and cooling, accelerating the shaping of the aluminum shell, and shortening the processing time; step three, notching, namely notching the semi-finished aluminum shell blank formed in the step two, removing redundant materials at the notch, and polishing;

fourthly, explosion prevention, namely nesting an explosion-proof layer in the aluminum shell formed in the third step, wherein the thickness of the explosion-proof layer is 1-2mm, and the explosion-proof grade is improved;

step five, stress removal, namely transferring the product obtained in the step four to a heating furnace, and performing furnace cooling when the product is reheated to 450-;

and step six, cleaning, namely putting the product cooled in the step five into a cleaning tank for soaking and washing, and naturally drying after washing.

Example 3

Referring to fig. 1, an automatic production line processing process for an aluminum case of a capacitor includes the following steps: step one, heating and feeding, namely heating an aluminum shell blank to 200 ℃ by using a heat treatment furnace, taking out and placing the aluminum shell blank in a tray for 1 min;

step two, stamping, namely performing stamping operation in a room temperature environment of 23-30 ℃, performing one-step stamping forming on the aluminum shell blank in the step one by using stamping equipment, maintaining pressure for 2min, performing normal-temperature water contact cooling, continuing for 0.5min, demolding, discharging, maintaining pressure and cooling, accelerating the shaping of the aluminum shell, and improving the processing efficiency; step three, notching, namely notching the semi-finished aluminum shell blank formed in the step two, removing redundant materials at the notch, and polishing;

fourthly, explosion prevention, namely embedding an explosion prevention layer in the aluminum shell formed in the third step, wherein the explosion prevention layer is made of epoxy resin, the thickness of the explosion prevention layer is 2mm, the epoxy resin has the thermosetting property, and the explosion prevention level is high;

step five, stress removal, namely transferring the product obtained in the step four to a heating furnace, reheating the product to 490 ℃, performing furnace cooling to eliminate stress generated in the previous process, and simultaneously forming a 62-micrometer oxide layer on the surface layer of the aluminum shell, so that the aluminum shell has the effects of insulation and ageing resistance;

and step six, cleaning, namely putting the product cooled in the step five into a cleaning tank for soaking and washing, and naturally drying after washing.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.