1000 MPA-GRADE QUENCHED AND TEMPERED HYDROELECTRIC STEEL PLATE AND PRODUCTION METHOD THEREFOR

Title:

1000 MPA-GRADE QUENCHED AND TEMPERED HYDROELECTRIC STEEL PLATE AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2023/000584

Kind Code:

A1

Abstract:

The present invention relates to the technical field of steel production. Disclosed are a 1000 MPa-grade quenched and tempered hydroelectric steel plate and a production method therefor, comprising the following chemical components in percentage by weight: C: 0.08％-0.11％; Mn: 1.00％-1.50％; Si: 0.10％-0.50％; P≤0.012％; S≤0.003％; Alt: 0.050％-0.080％; V: 0.040％-0.060％; Ti: 0.008％-0.020％; Ni: 1.00％-1.70％; Cr: 0.30％-0.60％; Mo: 0.40％-0.60％; B: 0.001％-0.002％; Pcm≤0.26％; and the balance being Fe and impurities. The 1000 MPa-grade quenched and tempered hydroelectric steel plate is obtained, the maximum thickness of the steel plate reaches 56 mm, the yield strength is greater than or equal to 885 MPa, and the tensile strength is 950-1130 MPa. The transverse low-temperature impact energy of the steel plate at a temperature of -60℃ is greater than or equal to 100 J. Since the carbon content is low and the welding cold crack sensitivity coefficient Pcm is less than or equal to 0.26%, the steel plate can be used at a low preheating temperature, and the welding quality and the welding efficiency of a hydropower engineering project construction site are improved.

More Like This:

JP2663777	FE-NI ALLOY EXCELLENT IN PLATING SUITABILITY AND ITS PRODUCTION
WO/2022/050500	MATERIAL FOR HOT STAMPING, AND METHOD FOR MANUFACTURING SAME
WO/2021/116741	HEAT TREATED COLD ROLLED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF

Inventors:

PAN ZHONGDE (CN)
LIU XINYANG (CN)
WU JUNPING (CN)
XIA ZHENGHAI (CN)
HONG JUN (CN)
JIANG JINXING (CN)
JIANG ZAIWEI (CN)
GUO HUAIBING (CN)
GU XIAOYANG (CN)
SUN XUDONG (CN)
WANG YADONG (CN)

Application Number:

PCT/CN2021/136684

Publication Date:

January 26, 2023

Filing Date:

December 09, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NANJING IRON & STEEL CO LTD (CN)

International Classes:

C21D8/02; C22C38/02; C22C33/04; C22C38/04; C22C38/06; C22C38/44; C22C38/46; C22C38/50; C22C38/54

Foreign References:

CN113652607A	2021-11-16
CN108359879A	2018-08-03
CN104513936A	2015-04-15
CN108193137A	2018-06-22
JP4344919B2	2009-10-14

Attorney, Agent or Firm:

NANJING LI & FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: SYMMETRICAL MEDIUM SURFACE-BASED TARGET ACOUSTIC SCATTERING STEALTH COVER LAYER AND IMPLEMENTATION M...

Next Patent: LOW-VOLTAGE TRANSFORMER AREA LOAD NON-POWER-CUT SWITCHING SYSTEM AND WORKING METHOD THEREOF