CN114242462A - Integrally-formed explosion-proof aluminum shell extrusion die and forming process thereof - Google Patents
Integrally-formed explosion-proof aluminum shell extrusion die and forming process thereof Download PDFInfo
- Publication number
- CN114242462A CN114242462A CN202111612443.2A CN202111612443A CN114242462A CN 114242462 A CN114242462 A CN 114242462A CN 202111612443 A CN202111612443 A CN 202111612443A CN 114242462 A CN114242462 A CN 114242462A
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- explosion
- proof
- forming
- aluminum shell
- die
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 96
- 238000001125 extrusion Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 abstract description 17
- 238000004880 explosion Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000003292 glue Substances 0.000 abstract description 4
- 239000004576 sand Substances 0.000 description 9
- 238000004080 punching Methods 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000641 cold extrusion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/12—Vents or other means allowing expansion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to the technical field of capacitors, in particular to an integrally-formed explosion-proof aluminum shell extrusion die and a forming process thereof. According to the invention, the explosion-proof lines matched with the explosion-proof protrusions are formed on the bottom surface of the aluminum shell while the upper die is embedded into the forming cavity on the lower die, the explosion-proof pressure consistency of the explosion-proof valve for extrusion forming of the aluminum shell is good, the flatness of the forming surface of the explosion-proof valve is high, the bottom surface of the capacitor can be smooth without glue pouring, the production cost of the capacitor is reduced, the assembly of a terminal product is not influenced, the potential safety hazard of explosion of the capacitor in the use process can be avoided, and the service life of the product is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to an integrally-formed explosion-proof aluminum shell extrusion die and a forming process thereof.
Background
After the aluminum shell is formed by cold extrusion, the explosion-proof valve is processed for the second time, the pressure discreteness of the explosion-proof valve manufactured by the process is large, and the bottom of a post-manufactured capacitor is easy to bulge, so that the assembly and the service life of a terminal product are influenced
The explosion-proof valve is one of the main component parts of condenser, it is made by the aluminum hull, and go out explosion-proof recess in aluminum hull bottom punching press, generally be behind cold extrusion forming aluminum hull among the prior art, directly carry out the punching press on the shaping aluminum hull and form explosion-proof valve, current production mode can improve production efficiency by a wide margin, but the secondary operation explosion-proof valve is not only big in the pressure fluctuation of punching press on the shaping aluminum hull, it is not good to lead to the explosion-proof performance, explosion-proof parameter is accurate inadequately, it warp to its bottom surface appearance after the punching press is carried out to the aluminum hull simultaneously, make the electric capacity that the punching press obtained explosion-proof valve bottom bulge more easily, influence the equipment and the life of terminal product.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrally-formed explosion-proof aluminum shell extrusion die and a forming process thereof, wherein the explosion-proof pressure consistency of an explosion-proof valve of an extrusion-formed aluminum shell is good, the flatness of a forming surface of the explosion-proof valve is high, and the service life of a product is greatly prolonged.
In order to solve the technical problems, the technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an explosion-proof aluminum hull extrusion die of integrated into one piece, includes mould and lower mould, be provided with on the lower mould with go up mould assorted one-tenth die cavity, go up the mould with form the extrusion passageway between the die cavity, be provided with the explosion-proof arch that is used for the explosion-proof line of shaping on the lower mould, the axis of explosion-proof bellied longitudinal center line, shaping chamber axis and last mould is on same straight line, through last mould embedding when forming the aluminum hull behind the one-tenth die cavity on the lower mould shaping on the aluminum hull bottom surface shaping with explosion-proof bellied assorted explosion-proof line.
Further, the shape of the anti-explosion bulge is any one of a K shape, a Y shape or a cross shape.
Further, the shaping chamber includes bottom surface and lateral wall, through the shaping chamfer between bottom surface and the lateral wall, the shape and the size of shaping chamfer with go up the chamfer on the mould appearance and match.
Furthermore, the edge of the forming cavity is provided with a round chamfer, and the radius of the round chamfer is 1.5-3 mm.
Furthermore, the molding chamfer and the upper chamfer are fillets, and the radius of each fillet is 0.5-1 mm.
Further, explosion-proof arch includes a plurality of sand grips, the tip of sand grip is provided with the shaping inclined plane, the projection length of shaping inclined plane on the shaping chamber bottom surface is 1/12-1/10 of sand grip length, the shaping inclined plane with shaping chamber bottom surface institute becomes the angle and is 8-15.
Further, the distance between the upper die and the explosion-proof die is 1/5-1/4 of the thickness of the aluminum shell.
Further, the length of the convex strip is 2/3-3/4 of the diameter of the forming cavity, and the height of the convex strip is 2/3-4/5 of the thickness of the aluminum shell.
The invention also comprises a molding process of the integrally molded explosion-proof aluminum shell extrusion die, which comprises the following steps:
heating the formed aluminum material to 10-80 ℃ below the melting point, smearing a lubricant in a forming cavity of a lower die, placing the heated formed aluminum material in an extrusion die, closing the upper die and the lower die to extrude the formed aluminum material, forming explosion-proof lines on the bottom surface of an aluminum shell through explosion-proof protrusions, wherein the extrusion pressure is 1.5-1.7MPa, the pressure maintaining time is 2-20s, the extrusion speed is 15-25 mm/s, returning the upper die after the aluminum shell is formed, and taking the aluminum shell with the explosion-proof lines out of the forming cavity.
Further, explosion-proof arch includes a plurality of sand grips, the tip of sand grip is provided with the shaping inclined plane, the projection length of shaping inclined plane on the shaping chamber bottom surface is 1/12-1/10 of sand grip length, the shaping inclined plane with shaping chamber bottom surface institute becomes the angle and is 8-15.
The invention has the beneficial effects that:
according to the invention, the explosion-proof lines matched with the explosion-proof protrusions are formed on the bottom surface of the aluminum shell while the upper die is embedded into the forming cavity on the lower die, the explosion-proof pressure consistency of the explosion-proof valve for extrusion forming of the aluminum shell is good, the flatness of the forming surface of the explosion-proof valve is high, the bottom surface of the capacitor can be smooth without glue pouring, the production cost of the capacitor is reduced, the assembly of a terminal product is not influenced, the potential safety hazard of explosion of the capacitor in the use process can be avoided, and the service life of the product is greatly prolonged.
Drawings
Fig. 1 is a schematic view of an integrally formed explosion-proof aluminum shell extrusion die of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
The reference numbers in the figures illustrate: 1. an upper die; 11. an extrusion channel; 2. a lower die; 3. a molding cavity; 31. a bottom surface; 32. a side wall; 33. forming and chamfering; 34. rounding and chamfering; 35. chamfering; 5. an explosion-proof bulge; 6. forming an inclined plane;
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1-2, an explosion-proof aluminum hull extrusion die of integrated into one piece, including last mould 1 and lower mould 2, be provided with on lower mould 2 with go up mould 1 assorted becomes die cavity 3, go up mould 1 with form and form extrusion passageway 11 between the die cavity 3, be provided with the explosion-proof arch 5 that is used for the explosion-proof line of shaping on lower mould 2, the vertical central line of explosion-proof arch 5, the axis of forming cavity 3 and the axis of going up mould 1 are on same straight line, through last mould 1 embedding when forming the aluminum hull behind the die cavity 3 on lower mould 2 on the shaping cavity on the shaping bottom surface 31 of the aluminum hull with explosion-proof protruding 5 assorted explosion-proof line.
According to the invention, the upper die 1 is embedded into the forming cavity 3 on the lower die 2 to form the aluminum shell, and simultaneously, the anti-explosion lines matched with the anti-explosion protrusions 5 are formed on the bottom surface 31 of the aluminum shell, the anti-explosion pressure of the anti-explosion valve for extruding the aluminum shell is good in consistency, the flatness of the forming surface of the anti-explosion valve is high, the bottom surface 31 of the capacitor can be flattened without glue pouring, the production cost of the capacitor is reduced, the assembly of a terminal product is not influenced, the potential safety hazard of explosion of the capacitor in the using process can be avoided, and the service life of the product is greatly prolonged.
Meanwhile, the extrusion die is suitable for forming the aluminum shells of lead type capacitors and soldering lug type capacitors in the market, has a wide application range and has market popularization value.
The shape of the explosion-proof bulge 5 is any one of K shape, Y shape or cross shape. The wall thickness of the groove of the anti-explosion pattern matched with the anti-explosion protrusion 5 can be relatively thin, so that when hot air and heat in the aluminum shell reach saturation, the center of the groove of the anti-explosion pattern can be easily broken, a large amount of hot air and heat can be discharged from the shell outwards from the central point of the groove of the anti-explosion pattern in time, the air dissipation and heat dissipation performance is good, and the potential safety hazard of easy explosion is eliminated.
The molding cavity 3 comprises a bottom surface 31 and a side wall 32, a molding chamfer 33 is arranged between the bottom surface 31 and the side wall 32, the shape and size of the molding chamfer 33 are matched with an upper chamfer 35 on the appearance of the upper die 1, a round chamfer 34 is arranged at the edge of the molding cavity 3, and the radius of the round chamfer 34 is 1.5-3 mm.
Specifically, the shape and size of the forming chamfer 33 are matched with the upper chamfer 35 on the appearance of the upper die 1, so that the manual chamfering process can be omitted when the wall thickness of the aluminum shell is uniform, the labor cost is reduced, the production efficiency is greatly improved, the product chamfer quality is ensured, and the forming chamfer 33 and the upper chamfer 35 have the functions of diversion and transition, so that the extrusion difficulty of the formed aluminum material is reduced.
The molding chamfer 33 and the upper chamfer 35 are fillets, and the radius of each fillet is 0.5-1 mm.
Explosion-proof protruding 5 includes a plurality of sand grips, the tip of sand grip is provided with shaping inclined plane 6, the projection length of shaping inclined plane 6 on shaping chamber 3 bottom surface 31 is 1/12-1/10 of sand grip length, shaping inclined plane 6 with shaping chamber 3 bottom surface 31 becomes angle 8-15.
Shaping inclined plane 6 can play the guide effect to extrusion's aluminium material, carries out the water conservancy diversion to the aluminium material for shaping aluminium material will become die cavity 3 intussuseption and fill up, avoids appearing the condition such as ripple, wire drawing on the shaping aluminium shell bottom surface 31, and stress when eliminating the formation explosion-proof line guarantees aluminium shell shaping quality.
The distance between the upper die 1 and the explosion-proof die is 1/5-1/4 of the thickness of the aluminum shell.
The length of the convex strip is 2/3-3/4 of the diameter of the forming cavity 3, and the height of the convex strip is 2/3-4/5 of the thickness of the aluminum shell.
The explosion-proof valve is directly and integrally formed during extrusion forming, so that the explosion-proof performance of the aluminum shell can be effectively guaranteed, the thickness of the bottom surface 31 of the aluminum shell is reduced or the depth of explosion-proof lines is increased, the use of aluminum materials is reduced, the thickness of the bottom surface 31 of the aluminum shell produced by the method can be 0.3-0.5mm, and the production cost is effectively reduced.
Example 1
The forming process of the integrally formed explosion-proof aluminum shell extrusion die comprises the following steps of:
heating the formed aluminum material to 10 ℃ below the melting point, smearing a lubricant in a forming cavity of a lower die, placing the heated formed aluminum material in an extrusion die, closing an upper die and the lower die to extrude the formed aluminum material, forming explosion-proof lines on the bottom surface of an aluminum shell through explosion-proof protrusions, wherein the extrusion pressure is 1.7MPa, the pressure maintaining time is 2s, the extrusion speed is 25mm/s, returning the upper die after the aluminum shell is formed, and taking the aluminum shell with the explosion-proof lines out of the forming cavity
Example 2
The forming process of the integrally formed explosion-proof aluminum shell extrusion die comprises the following steps of:
heating the formed aluminum material to 80 ℃ below the melting point, smearing a lubricant in a forming cavity of a lower die, placing the heated formed aluminum material in an extrusion die, closing the upper die and the lower die to extrude the formed aluminum material, forming explosion-proof lines on the bottom surface of an aluminum shell through explosion-proof protrusions, wherein the extrusion pressure is 1.5MPa, the pressure maintaining time is 20s, the extrusion speed is 15mm/s, returning the upper die after the aluminum shell is formed, and taking the aluminum shell with the explosion-proof lines out of the forming cavity
Example 3
The forming process of the integrally formed explosion-proof aluminum shell extrusion die comprises the following steps of:
heating the formed aluminum material to 50 ℃ below the melting point, smearing a lubricant in a forming cavity of a lower die, placing the heated formed aluminum material in an extrusion die, closing the upper die and the lower die to extrude the formed aluminum material, forming explosion-proof lines on the bottom surface of an aluminum shell through explosion-proof protrusions, wherein the extrusion pressure is 1.6MPa, the pressure maintaining time is 5s, the extrusion speed is 20mm/s, returning the upper die after the aluminum shell is formed, and taking the aluminum shell with the explosion-proof lines out of the forming cavity
The explosion-proof arch comprises a plurality of convex strips, the end part of each convex strip is provided with a forming inclined plane, the projection length of the forming inclined plane on the bottom surface of the forming cavity is 1/12-1/10 of the length of each convex strip, and the forming inclined plane and the bottom surface of the forming cavity form an angle of 8-15 degrees.
According to the invention, the upper die and the lower die are assembled to extrude the formed aluminum material, the explosion-proof protrusions form explosion-proof lines on the bottom surface of the aluminum shell, the explosion-proof valve is manufactured by directly processing the explosion-proof valve on the forming die during extrusion forming, the manufacturing pressure of the explosion-proof valve is consistent, the explosion-proof pressure is good in consistency, the problem that the depth of the explosion-proof lines formed by the traditional explosion-proof valve formed by stamping is inconsistent due to stamping pressure fluctuation is avoided, the flatness of the forming surface of the explosion-proof valve is high, the bottom surface of the capacitor can be flattened without glue pouring, the production cost of the capacitor is reduced, the influence on the assembly of a terminal product is avoided, and the service life of the product is greatly prolonged.
The invention simplifies the extrusion step, simplifies the aluminum shell forming equipment, reduces the space occupied by additional processing equipment, does not need to carry out secondary transfer on the formed aluminum shell, and is beneficial to the production of enterprises.
The explosion-proof valve is manufactured when the aluminum shell is extruded and formed, the forming quality of the explosion-proof valve can be effectively guaranteed, and compared with the production process for punching the explosion-proof valve in the prior art, the forming process of the explosion-proof valve can greatly improve the explosion-proof performance of the explosion-proof valve, the explosion-proof parameters are accurate and high, and the potential safety hazard of explosion of a capacitor in the using process can be avoided.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides an explosion-proof aluminum hull extrusion die of integrated into one piece, its characterized in that, includes mould and lower mould, be provided with on the lower mould with go up mould assorted shaping chamber, go up the mould with form between the shaping chamber and form the extrusion passageway, be provided with the explosion-proof arch that is used for the explosion-proof line of shaping on the lower mould, the axis of explosion-proof bellied longitudinal center line, shaping chamber axis and last mould on same straight line, through last mould embedding when forming the aluminum hull behind the shaping chamber on the lower mould shaping chamber shaping on the aluminum hull bottom surface shaping with explosion-proof bellied assorted explosion-proof line.
2. An integrally formed explosion-proof aluminum housing extrusion die as set forth in claim 1, wherein said explosion-proof protrusion has any one of a K-shape, a Y-shape or a cross-shape.
3. The extrusion die of claim 1, wherein the forming cavity comprises a bottom surface and a side wall, a forming chamfer is arranged between the bottom surface and the side wall, and the shape and size of the forming chamfer are matched with the upper chamfer on the outer shape of the upper die.
4. The extrusion die for integrally forming an explosion-proof aluminum shell according to claim 1, wherein the edge of the forming cavity is provided with a round chamfer, and the radius of the round chamfer is 1.5-3 mm.
5. An integrally formed explosion-proof aluminum shell extrusion die as set forth in claim 3, wherein said forming chamfer and said upper chamfer are both rounded corners, and the radius of said rounded corners is 0.5-1 mm.
6. The extrusion die for integrally forming an explosion-proof aluminum shell as claimed in claim 1, wherein the explosion-proof protrusion comprises a plurality of convex strips, the end portions of the convex strips are provided with forming inclined planes, the projection length of the forming inclined planes on the bottom surface of the forming cavity is 1/12-1/10 of the length of the convex strips, and the angle formed by the forming inclined planes and the bottom surface of the forming cavity is 8-15 °.
7. The extrusion die for integrally forming an explosion-proof aluminum shell as recited in claim 1, wherein the distance between the upper die and the explosion-proof die is 1/5-1/4 of the thickness of the aluminum shell.
8. The extrusion die for integrally forming an explosion-proof aluminum shell as claimed in claim 6, wherein the length of the rib is 2/3-3/4 of the diameter of the forming cavity, and the height of the rib is 2/3-4/5 of the thickness of the aluminum shell.
9. A molding process using the integrally molded explosion-proof aluminum shell extrusion die of any one of claims 1 to 7, comprising the steps of:
heating the formed aluminum material to 10-80 ℃ below the melting point, smearing a lubricant in a forming cavity of a lower die, placing the heated formed aluminum material in an extrusion die, closing the upper die and the lower die to extrude the formed aluminum material, forming explosion-proof lines on the bottom surface of an aluminum shell through explosion-proof protrusions, wherein the extrusion pressure is 1.5-1.7MPa, the pressure maintaining time is 2-20s, the extrusion speed is 15-25 mm/s, returning the upper die after the aluminum shell is formed, and taking the aluminum shell with the explosion-proof lines out of the forming cavity.
10. The forming process of the integrally formed explosion-proof aluminum shell extrusion die of claim 9, wherein the explosion-proof protrusion comprises a plurality of convex strips, the end portions of the convex strips are provided with forming inclined planes, the projection length of the forming inclined planes on the bottom surface of the forming cavity is 1/12-1/10 of the length of the convex strips, and the angle formed by the forming inclined planes and the bottom surface of the forming cavity is 8-15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111612443.2A CN114242462A (en) | 2021-12-27 | 2021-12-27 | Integrally-formed explosion-proof aluminum shell extrusion die and forming process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111612443.2A CN114242462A (en) | 2021-12-27 | 2021-12-27 | Integrally-formed explosion-proof aluminum shell extrusion die and forming process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114242462A true CN114242462A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111612443.2A Pending CN114242462A (en) | 2021-12-27 | 2021-12-27 | Integrally-formed explosion-proof aluminum shell extrusion die and forming process thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02284347A (en) * | 1989-04-25 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Manufacture of battery case used for explosion-proof enclosed battery |
| DE4133340A1 (en) * | 1991-10-08 | 1993-04-15 | Harry Frank | Capacitor can with burst section - has cup shaped housing formed in press extrusion process with die having insert to form grooves for burst section |
| CN202129349U (en) * | 2011-05-04 | 2012-02-01 | 舟山市新龙电子设备有限公司 | Explosion-proof valve punching die of capacitor aluminum shell |
| CN205110530U (en) * | 2015-10-26 | 2016-03-30 | 如东联亿机电有限公司 | Production explodes special mould of flat aluminum hull |
| CN108500106A (en) * | 2018-04-17 | 2018-09-07 | 武汉孚安特科技有限公司 | A kind of 304 stainless steel explosion-proof casing preparation methods of lithium thionyl chloride cell |
| CN110021482A (en) * | 2019-04-19 | 2019-07-16 | 速飞狐(广州)电子有限公司 | A kind of aluminum hull and its processing mold and method preventing stud capacitor bottom drum bottom |
-
2021
- 2021-12-27 CN CN202111612443.2A patent/CN114242462A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02284347A (en) * | 1989-04-25 | 1990-11-21 | Matsushita Electric Ind Co Ltd | Manufacture of battery case used for explosion-proof enclosed battery |
| DE4133340A1 (en) * | 1991-10-08 | 1993-04-15 | Harry Frank | Capacitor can with burst section - has cup shaped housing formed in press extrusion process with die having insert to form grooves for burst section |
| CN202129349U (en) * | 2011-05-04 | 2012-02-01 | 舟山市新龙电子设备有限公司 | Explosion-proof valve punching die of capacitor aluminum shell |
| CN205110530U (en) * | 2015-10-26 | 2016-03-30 | 如东联亿机电有限公司 | Production explodes special mould of flat aluminum hull |
| CN108500106A (en) * | 2018-04-17 | 2018-09-07 | 武汉孚安特科技有限公司 | A kind of 304 stainless steel explosion-proof casing preparation methods of lithium thionyl chloride cell |
| CN110021482A (en) * | 2019-04-19 | 2019-07-16 | 速飞狐(广州)电子有限公司 | A kind of aluminum hull and its processing mold and method preventing stud capacitor bottom drum bottom |
Non-Patent Citations (1)
| Title |
|---|
| 宋仁伯: "材料成型工艺学", 冶金工业出版社, pages: 436 - 438 * |
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