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Cold working die steel

A technology of cold working die steel and elements, which is applied in the field of die steel, can solve problems such as wear and poor toughness, and achieve the effect of good wear resistance and high toughness

Inactive Publication Date: 2017-03-29
JIANGSU TIANGONG TOOLS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing die steel is prone to severe wear and tear during cold stamping and cold forging of auto parts. Tooth rubbing dies, high-speed punches, stainless steel plate punches and precision plastic molds have poor toughness, so the die steel on the market can no longer meet the existing precision stamping dies, cold forging dies for auto parts, deep drawing and tooth rubbing dies , high-speed punches, stainless steel plate punches and precision plastic molds, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1, a cold work die steel, including the weight ratio of the following contents: C 1.05-1.11; Mn 0.25-0.35; Si 0.35-0.45; S ≤0.005; P ≤0.002; Cr 8.2-8.8; ; V 0.4-0.6; microalloying elements 0.03-0.07. The present invention can be used under low temperature and high temperature tempering conditions, which are selected according to the use conditions of the mould; and the high temperature tempering is performed more than twice during the heat treatment process. At the same time, in actual use, adjust the actual size and conditions of the mold as needed, and adjust the heat treatment process to ensure the highest efficiency and maximum service life of the mold. The present invention is a process technology that can improve performance by adding a small amount of special microalloying elements.

Embodiment 2

[0012] Example 2, in the cold working die steel described in Example 1: the weight ratio including the following contents: C 1.07-1.09; Mn 0.28-0.32; Si 0.38-0.42; S ≤ 0.003; P ≤ 0.001; Cr 8.4-8.6 ; Mo 1.7-2.2; V 0.45-0.55; microalloying elements 0.03-0.04.

Embodiment 3

[0013] Example 3, in the cold work die steel described in Example 1 or 2: the weight ratio including the following contents: C 1.08; Mn 0.3; Si 0.4; S ≤ 0.003; P ≤ 0.001; Cr 8.5; Mo 2.0; V 0.5 ; microalloying elements 0.03.

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PUM

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Abstract

The invention provides cold working die steel. The die steel comprises the following contents C, Mn, Si, S, P, Cr, Mo, V and micro alloying elements according to a weight ratio: 1.05-1.11:0.25-0.35:0.35-0.45:0-0.005:0-0.002:8.2-8.8:1.5-2.5:0.4-0.6:0.03-0.07. The steel has the advantages of good wear resistance and high toughness, and the steel is suitable for usage requirements of precision stamping dies, automobile fitting cold forging dies, deep drawing and thread rolling dies, high speed punches, steel plate punches, precision plastic dies, and the like.

Description

technical field [0001] The invention relates to a mold steel, in particular to a cold working mold steel. Background technique [0002] At present, the existing die steel is widely used in precision stamping dies, auto parts cold forging dies, deep drawing and rubbing dies, high-speed punches, stainless steel plate punches and precision plastic molds. However, the existing die steel is prone to severe wear and tear during cold stamping and cold forging of auto parts. Tooth rubbing dies, high-speed punches, stainless steel plate punches and precision plastic molds have poor toughness, so the die steel on the market can no longer meet the existing precision stamping dies, cold forging dies for auto parts, deep drawing and tooth rubbing dies , high-speed punches, stainless steel plate punches and precision plastic molds. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a cold work die steel with good wear resistanc...

Claims

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Application Information

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IPC IPC(8): C22C38/24C22C38/26C22C38/28C22C38/32
Inventor 朱小坤徐辉霞廖俊程兴磊吴建忠
Owner JIANGSU TIANGONG TOOLS CO LTD