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Steel for card clothing

A technology of card clothing and mass percentage, applied in the field of metal card clothing processing, can solve the problem of not being particularly suitable for card clothing, etc., and achieve the effects of improving wear resistance, preventing grain growth, and good cold forming performance.

Inactive Publication Date: 2016-08-10
金轮针布(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional card clothing steel mainly adopts W and V alloying in alloying, but the role of W is not particularly suitable for card clothing products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A steel for card clothing, which comprises the following components by mass percentage:

[0014] C: 0.78%, Si: 0.22%, Mn: 0.62%, Cr: 0.22%, P: 0.009%, S: 0.007%, V: 0.12%, Nb: 0.025%, Ni: 0.04%, Mo: 0.04%, Cu: 0.02%, the rest is Fe and unavoidable impurities.

[0015] The above-mentioned steel is smelted in a converter or an electric furnace to make card clothing. After quenching and tempering heat treatment, the grain size of the product reaches grade 13 (GB / T 6394-2002), and the hardness reaches 830HV 0.2 , The service life is twice as long as that of ordinary materials.

Embodiment 2

[0017] A steel for card clothing, which comprises the following components by mass percentage:

[0018] C: 0.80%, Si: 0.24%, Mn: 0.60%, Cr: 0.25%, P: 0.011%, S: 0.009%, V: 0.05%, Nb: 0.020%, Ni: 0.10%, Mo: 0.05%, Cu: 0.06%, the rest is Fe and unavoidable impurities.

[0019] The above-mentioned steel is smelted in a converter or an electric furnace to make card clothing. After quenching and tempering heat treatment, the grain size of the product reaches 13 grades (GB / T 6394-2002), and the hardness reaches 840HV 0.2 , The service life is twice as long as that of ordinary materials.

Embodiment 3

[0021] A steel for card clothing, which comprises the following components by mass percentage:

[0022] C: 0.83%, Si: 0.26%, Mn: 0.65%, Cr: 0.27%, P: 0.010%, S: 0.006%, V: 0.07%, Nb: 0.030%, Ni: 0.05%, Mo: 0.07%, Cu: 0.03%, the rest is Fe and unavoidable impurities.

[0023] The above-mentioned steel is smelted in a converter or an electric furnace to make card clothing. After quenching and tempering heat treatment, the grain size of the product reaches grade 14 (GB / T 6394-2002), and the hardness reaches 850HV 0.2 , The service life is twice as long as that of ordinary materials.

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Abstract

The invention provides steel for card clothing. The steel is prepared from the following components in percentage by mass: 0.75 to 0.85 percent of C, 0.10 to 0.50 percent of Si, 0.30 to 0.90 percent of Mn, 0.20 to 0.50 percent of Cr, smaller than 0.02 percent of P, smaller than 0.01 percent of S, 0.04 to 0.20 percent of V, 0.015 to 0.060 percent of Nb, 0 to 0.50 percent of Ni, 0 to 0.50 percent of Mo, 0 to 0.40 percent of Cu, and the balance being inevitable impurities. According to the steel disclosed by the invention, by adopting a mode of reasonably adding Nb and V, produced card clothing undergoing quenching-tempering heat treatment has crystal particle size of over 12 grades and hardness of over 800HV0.2 can be guaranteed while the steel has good cold processing forming performance, the wear resistance of products is remarkably improved, and the service life is also greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal card clothing processing, and in particular relates to a steel for card clothing. Background technique [0002] The steel for card clothing needs to go through cold drawing, intermediate heat treatment, cold rolling, punching and quenching + tempering processes from the hot-rolled plate to the finished card clothing. Therefore, it is required to have excellent cold forming performance, good heat treatment process response, and finished products. Card clothing has high wear resistance and is not easy to break. Over the years, most domestic card clothing manufacturers have chosen steel with the same composition as foreign card clothing steel, but it is difficult to fully reach the international advanced level in terms of production and use effects. [0003] Microalloying technology refers to the addition of trace elements such as Nb, V, Ti and other carbides and nitrides to steel, and under the actio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/18C22C38/12C22C38/08C22C38/16
CPCC22C38/02C22C38/04C22C38/08C22C38/12C22C38/16C22C38/18
Inventor 卓城之江雅民陆忠雍岐龙钱冬燕
Owner 金轮针布(江苏)有限公司
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