Processing

Please wait...

Settings

Settings

Goto Application

1. CN112714800 - STEEL SHEET

Office
China
Application Number 201980060721.2
Application Date 26.12.2019
Publication Number 112714800
Publication Date 27.04.2021
Publication Kind A
IPC
C21D 9/46
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
46for sheet metals
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/60
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
CPC
C21D 9/46
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
46for sheet metals
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/60
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
60containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Y02P 10/20
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
10Technologies related to metal processing
20Recycling
Applicants NIPPON STEEL CO., LTD.
日本制铁株式会社
Inventors HAYASHI KOTARO
林宏太郎
TSUTSUI KAZUMASA
筒井和政
UENISHI AKIHIRO
上西朗弘
Agents 永新专利商标代理有限公司 72002
Priority Data 2018-245654 27.12.2018 JP
Title
(EN) STEEL SHEET
(ZH) 钢板
Abstract
(EN)
The present invention relates to a steel sheet containing, in terms of % by mass, more than 0.10 to 0.45% C, 0.001-2.50% Si, more than 4.00 to 8.00% Mn, and 0.001-1.50% sol. Al, the metal structure at a position 1/4 the thickness from the surface of the steel sheet including, in terms of area%, 25-90% tempered martensite and 10-50% residual austenite, and the standard deviation of the Mn concentration in a range of 20 mum in the rolling direction and 20 mum in the sheet thickness direction at a position 1/4 the thickness from the surface of the steel sheet being at least 0.30% by mass.

(ZH)
本发明涉及一种钢板,其以质量%计含有:C:超过0.10%且为0.45%以下、Si:0.001~2.50%、Mn:超过4.00%且为8.00%以下、和sol.Al:0.001~1.50%,距离表面为厚度的1/4位置处的金属组织以面积%计含有25~90%的回火马氏体和10~50%的残留奥氏体,在距离表面为厚度的1/4位置处,轧制方向20μm和板厚方向20μm的范围内的Mn浓度的标准偏差为0.30质量%以上。

Related patent documents