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Manufacturing method for supporting roller for rolling battery pole piece

A technology for battery pole pieces and manufacturing methods, which is applied in the field of roll manufacturing, can solve problems such as poor solidification quality of steel ingots and poor toughness and plasticity of products, and achieve the effects of improved solidification quality, good quality, and high accident resistance

Pending Publication Date: 2021-11-09
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the battery industry, the battery pole piece is an important part of the battery, and the demand is also increasing. Users pay more and more attention to the anti-accident ability of the roll. Since the battery pole piece support roll requires higher hardness, users The hardness of the backup roll is required to be above 70HSD, so the C content in the material is in a relatively high range. Due to the high C content, the solidification quality of the steel ingot is poor, and the toughness and plasticity of the product are poor.

Method used

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Embodiment Construction

[0013] The technical solutions of the present invention will be clearly and completely described below through specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0014] The back-up roll rolling method of the battery pole piece reduces the C element content in the original material, improves the solidification quality of the steel ingot, increases the Si content in the original material, and ensures the strength of the material matrix; the chemical composition and weight percentage of the material in the steel are: C 0.55~0.70%; Si 0.35~0.50%; Mn 0.25~0.35%; Cr 1.7~2.1%; Mo 0.20~0.50%; Ni≤0.30%; S≤0.025%; P≤0.025%; the rest is Fe and a small amount Impurities; improve the solidificatio...

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Abstract

The invention relates to the technical field of roller manufacturing, in particular to a manufacturing method for a supporting roller for rolling a battery pole piece. Chemical components and weight percentages in the refined steel are added, an LF / VD refining furnace is adopted for refining, impurities are removed, gas in molten steel is removed, and a steel ingot is formed through pouring; the steel ingot is forged, stress relief annealing treatment is performed, and rough machining is performed to obtain a roller blank; and the roller blank subjected to rough machining is subjected to thermal refining, the roller blank subjected to thermal refining is subjected to tempering, finish machining is conducted according to the needed size after tempering is completed, and the battery pole piece supporting roller is manufactured. The method improves the solidification quality of the steel ingot, improves the flaw detection qualification rate of the roller, and improves the accident resistance of the roller.

Description

technical field [0001] The invention relates to the technical field of roll manufacturing, in particular to a manufacturing method for a backup roll used for rolling battery pole pieces. Background technique [0002] With the development of the battery industry, the battery pole piece is an important part of the battery, and the demand is also increasing. Users pay more and more attention to the anti-accident ability of the roll. Since the battery pole piece support roll requires higher hardness, users The hardness of the back-up roll is required to be above 70HSD, so the C content in the material is in a relatively high range. Due to the high C content, the solidification quality of the steel ingot is poor, and the toughness and plasticity of the product are poor. Contents of the invention [0003] In view of the above-mentioned problems, the purpose of the present invention is to improve the solidification quality of steel ingots and the toughness and plasticity of produ...

Claims

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Application Information

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IPC IPC(8): C22C33/04C22C38/02C22C38/04C22C38/22C22C38/44B21J5/00C21D1/25C21D1/30C21D6/00C21D8/00C21D9/38
CPCC22C33/04C22C38/02C22C38/04C22C38/22C22C38/44C21D1/30C21D6/002C21D6/004C21D6/005C21D6/008C21D8/005C21D1/25C21D9/38B21J5/002
Inventor 韩维国辛胜朋党坤会梁建立史会强
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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