Title:
LOW-TEMPERATURE, HIGH-TOUGHNESS, HIGH-TEMPERATURE, HIGH-INTENSITY AND HIGH-HARDENABILITY HOT MOLD STEEL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/208181
Kind Code:
A1
Abstract:
Low-temperature, high-toughness, high-temperature, high-intensity and high-hardenability hot mold steel, the hot mold steel comprising the following ingredients in parts by weight: C: 0.15-0.35%; Si0: 40-0.90%; Mn: less than or equal to 0.80%; Cr: 1.50-2.40%; Ni: 2.50-4.50%; Mo: 1.00-1.60%; V: 0.10-0.40%; W: 0.20-0.90%; P: less than or equal to 0.02%; S: less than or equal to 0.02%, and the balance is matrix Fe and inevitable impurities, the above percentages being the weight percentages. After a tempering treatment is carried out, the V-notch low-temperature impact work of the material at -40°C may reach more than 30 J, the 700°C high-temperature intensity of the material may reach more than 380 MPa, the hardenability may reach more than 200 mm, and therefore, the tissue of the material is guaranteed to be internally and externally even. The material may be suitable for a hot-working mold which requires a low-temperature, high-toughness, high-temperature, high-intensity and high-hardenability special working condition.
Inventors:
HUANG JINFENG (CN)
ZHANG JIN (CN)
ZHAO CHAO (CN)
ZHANG CHENG (CN)
ZHANG JIN (CN)
ZHAO CHAO (CN)
ZHANG CHENG (CN)
Application Number:
PCT/CN2020/091212
Publication Date:
October 21, 2021
Filing Date:
May 20, 2020
Export Citation:
Assignee:
UNIV BEIJING SCIENCE & TECH (CN)
International Classes:
C22C38/02; C22C38/04; C22C38/44; C22C38/46; C22C38/50; C22C38/52
Foreign References:
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| JP2002371341A | 2002-12-26 |
Attorney, Agent or Firm:
BEIJING ZHCC INTELLECTUAL PROPERTY (CN)
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