Title:
PLASTIC MOLD STEEL PLATE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/272873
Kind Code:
A1
Abstract:
Disclosed are a plastic mold steel plate and a production method therefor. The production method comprises: heating a steel billet which has a soaking section having a temperature of 1210 to 1250°C; rolling into a steel plate at an initial rolling temperature of 1060 to 1140°C, and a final rolling temperature of 980 to 1050°C; moving the steel plate onto a cooling bed and air-cooling to 200°C or lower; after that, normalizing with a normalizing temperature of Ac3+60°C to Ac3+90°C; after normalizing, moving the steel plate to the cooling bed and air-cooling to Bf-50°C to Bf-20°C; finally, performing cross-stacking on the steel plate and a ferritic pearlite steel plate which is a temperature of 450 to 550°C, wherein the steel plate is self-tempered during stacking until the temperature of the steel plate is reduced to Bf-50°C to Bf-20°C again; and after that, unstacking and air-cooling.
Inventors:
QU JINBO (CN)
ZHEN FAN (CN)
SHAO CHUNJUAN (CN)
YANG HAO (CN)
ZHEN FAN (CN)
SHAO CHUNJUAN (CN)
YANG HAO (CN)
Application Number:
PCT/CN2021/110563
Publication Date:
January 05, 2023
Filing Date:
August 04, 2021
Export Citation:
Assignee:
INSTITUTE OF RES OF IRON & STEEL JIANGSU PROVINCE/SHA STEEL CO LTD (CN)
ZHANGJIAGANG HONGCHANG STEEL CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
ZHANGJIAGANG HONGCHANG STEEL CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)
International Classes:
C21D8/02; C22C38/22; C22C38/44
Foreign References:
| CN109504847A | 2019-03-22 | |||
| CN107587075A | 2018-01-16 | |||
| CN110527922A | 2019-12-03 | |||
| KR100960088B1 | 2010-05-31 | |||
| CN102002638A | 2011-04-06 | |||
| JPH02294450A | 1990-12-05 | |||
| JPH0215117A | 1990-01-18 | |||
| US5683633A | 1997-11-04 | |||
| GB7092019D0 |
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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