HIGH-STRENGTH MULTIPHASE TINNED STEEL RAW PLATE AND MANUFACTURING METHOD THEREFOR

Title:

HIGH-STRENGTH MULTIPHASE TINNED STEEL RAW PLATE AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2019/042268

Kind Code:

A1

Abstract:

Disclosed are a high-strength multiphase tinned steel raw plate and a manufacturing method therefor, wherein the mass percentages of the components of the multiphase tinned steel raw plate are: 0.081%-0.14% of C, 0.2%-0.8% of Mn, 0.01%-0.09% of Al, 0.01%-0.03% of P, 0.002%-0.015% of N, also containing one or more than one of 0.001%-0.005% of B, 0.005%-0.05% of Cr, 0.001%-0.1% of Ti, 0.001%-0.2% of Nb, 0.005%-0.03% of Cu, 0.001%-0.008% of Mo, and the balance of Fe and other inevitable impurities; and satisfy: 0.21% ≤ Mn + 1.3 Cr + 3.2 Mo + 0.5 Cu ≤ 0.91%. The tinned raw plate has a structure comprising ferrite grains, pearlite, martensite and cementite particles, wherein the total volume fraction of the pearlite, martensite and cementite particles is 5%-20%, the volume fraction of the martensite is 1%-5%, and the martensite has a solid solution content of carbon of ≥ 0.07%. The tinned raw plate has a high strength and better elongation, and can be used to produce a can body, a can bottom, an easy-open end and a twist-off cap, etc. of a three-piece can which has higher requirements for strength and elongation.

Inventors:

LIAN FULIANG (CN)
LIANG GAOFEI (CN)
CHEN HONGXING (CN)
ZHAO SHUNLI (CN)
BAN BIJUN (CN)
LI XIUJUN (CN)
XU GANG (CN)

Application Number:

PCT/CN2018/102619

Publication Date:

March 07, 2019

Filing Date:

August 28, 2018

Export Citation:

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Assignee:

BAOSHAN IRON & STEEL (CN)

International Classes:

C22C38/14; C21D8/02; C22C38/06

Domestic Patent References:

WO2008102006A1	2008-08-28
WO2008102006A1	2008-08-28

Foreign References:

CN102719738A	2012-10-10
CN102286688A	2011-12-21
US20150010779A1	2015-01-08
US20150010779A1	2015-01-08
CN101999009A	2011-03-30

Other References: