Upsetting method for battery pole piece roll

A battery pole piece and roll technology, applied in the field of roll forging, can solve the problems of easy formation of rounded corners and lack of meat, difficulty in machining, low production efficiency, etc., and achieve the effects of reducing fire times, saving raw materials and improving efficiency.

Active Publication Date: 2020-07-17
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After partial upsetting, the billet of the roll body forms a single-drum shape. After the later elongation and forming, the corners at both ends of the roll body are easily rounded and lack meat. The lack of meat at the corners of the roll body has a great influence on the later machining It causes difficulties, which can only be improved by increasing the material used for the roll body or increasing the number of times of production to upset the roll body, resulting in waste of materials or energy, and low production efficiency.

Method used

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  • Upsetting method for battery pole piece roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, the diameter of the body blank of the battery pole piece roll is 840 mm, and the diameter of the roll neck blank is 400 mm, which now need to be upset. The diameter of the inner hole of the drain disc used is 400mm.

[0027] When blanking, reserve a fillet-shaped residual material at the root where the roll body and the roll neck meet, and the radius of the residual material is 160 mm. Local upsetting was performed using a drain plate to form protrusions at the corners of the roll body, and the height of the protrusions was 20 mm. During subsequent elongation, this protrusion can be corrected to a right angle to the roll body.

[0028] This process only needs to increase the remaining material by 200Kg, while the original process needs to increase the material for the roll body by 520Kg. This process greatly saves raw materials.

Embodiment 2

[0030] In this embodiment, the diameter of the roll body blank of the battery pole piece roll is 790mm, and the diameter of the roll neck blank is 370mm, which now need to be upset. The diameter of the inner hole of the drain disc used is 370 mm.

[0031] When unloading, reserve a fillet-shaped residual material at the root where the roll body and the roll neck meet, and the radius of the residual material is 92.5 mm. Local upsetting was performed using a drain plate to form protrusions at the corners of the roll body, and the height of the protrusions was 10 mm. During subsequent elongation, this protrusion can be corrected to a right angle to the roll body.

[0032] This process only needs to increase the remaining material by 180Kg, while the original process needs to increase the material used for the roll body by 400Kg. This process greatly saves raw materials.

Embodiment 3

[0034] In this embodiment, the diameter of the roll body blank of the battery pole piece roll is 840mm, and the diameter of the roll neck blank is 390mm, which now need to be upset. The diameter of the inner hole of the drain disc used is 400mm.

[0035] When blanking, reserve a fillet-shaped residual material at the root where the roll body and the roll neck meet, and the radius of the residual material is 150mm. Local upsetting was performed using a drain plate to form protrusions at the corners of the roll body, and the height of the protrusions was 15 mm. During subsequent elongation, this protrusion can be corrected to a right angle to the roll body.

[0036] This process only needs to increase the remaining material by 183Kg, while the original process needs to increase the material used for the roll body by 500Kg. This process greatly saves raw materials.

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Abstract

The invention relates to an upsetting method of a battery pole piece roller, and belongs to the technical field of roller forging. According to the upsetting method of the battery pole piece roller, the battery pole piece roller comprises a roller body and a roller neck integrally formed at the two ends of the roller body, the diameter of the roller body is larger than that of the roller neck, andthe roller body is manufactured with a local upsetting method; during discharging, oddments are reserved at the root of the joint of the roller body and the roller neck; during upsetting, by means ofdrain caps, under the effect of inner holes of the drain caps, the reserved oddments flow, and the root of the roller body is formed; and an original roller body root blank flows to angles of the roller body, the angles are formed, and protrusions are generated. By means of the reserved oddments, the oddments flow during upsetting, it can be promoted that the edges finally deform to form right angles, large rounded angles are prevented from being formed, and normal product procedures are guaranteed. Compared with a traditional method, by means of the technological method, raw materials can besaved, the production cost can be reduced, and the utilization rate of the materials can be increased; and the heating number during upsetting can also be reduced, thus, the machining time is reduced, and the efficiency of overall machining is improved.

Description

technical field [0001] The invention relates to a roll upsetting method for battery pole pieces, belonging to the technical field of roll forging. Background technique [0002] Among the rolled products, battery pole piece rolls are used to roll battery pole pieces. Due to the needs of the roll electrode, the shape of the roll used is different from that used in other conventional rolling. The diameter of the middle roll body is larger than that of the roll diameter at both ends. In order to meet the forging requirements of the product and ensure the quality of the product, a forging method of partial upsetting is required. , A large drop between the roll body and the roll diameter is achieved through local upsetting deformation of the roll body. After partial upsetting, the billet of the roll body forms a single-drum shape. After the later elongation and forming, the corners at both ends of the roll body are easily rounded and lack meat. The lack of meat at the corners of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/08B21J5/00
CPCB21J5/002B21J5/08
Inventor 齐冬冬许世昌刘延春
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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