US 12,606,894 B2 · Steel for glass lining and production method therefor

Abstract

Steel for glass lining, comprising the following chemical elements in mass percent: C: 0.015-0.060%, Si: 0.01-0.50%, Mn: 0.20-1.5%, P: 0.005-0.10%, Al: 0.010-0.070%, Ti: 0.10-0.30%, and the balance of Fe and other inevitable impurities. The microstructure of the steel for glass lining is a ferrite or a combination of a ferrite and a cementite. In addition, also disclosed is a production method for steel for glass lining, comprising the steps of (1) smelting, refining, and continuous casting to obtain a slab; (2) heating, the heating temperature being 1050-1250° C.; (3) hot rolling, the final temperature of hot rolling being controlled to be 800-920° C.; (4) cooling; and (5) thermal treatment. The steel for glass lining has excellent machinability and low temperature toughness, and also has excellent lining performance.

Claims19

Dependent claims

A steel for glass lining, comprising the following chemical elements in mass percentages:

C:
0.015-0.060%;
Si:
0.01-0.50%;
Mn:
0.20-1.5%;
P:
0.005-0.10%;
Al:
0.010-0.070%;
Ti:
0.10-0.30%;
Cu≤0.50%;
Cr≤0.50%;
Ni≤0.50%;
Mo≤0.05%;
S≤0.03%;
N≤0.008%;
wherein the following relationship is satisfied:
Cu+Cr+Ni+Mo≤1.0%, and Tieff/C≥4.0, wherein Tieff=Ti−1.5×S−3.43×N;
a balance of Fe and other unavoidable impurities;
wherein a microstructure of the steel for glass lining is ferrite, or ferrite+cementite;
wherein the steel has a yield strength of 205-345 MPa, and elongation A50 of ≥30%, a Charpy impact energy at −40° C. of ≥34 J, and a yield ratio of ≤0.8.

20 more elements

Dependencies are inferred from the claim text.

Steel for glass lining and production method therefor

Life of this patent

Steel for glass lining and production method therefor

Life of this patent

Abstract

Claims19