Processing

Please wait...

Settings

Settings

Goto Application

1. CN103320692 - 超高韧性、优良焊接性HT550钢板及其制造方法

Office
China
Application Number 201310244712.3
Application Date 19.06.2013
Publication Number 103320692
Publication Date 25.09.2013
Grant Number 103320692
Grant Date 06.07.2016
Publication Kind B
IPC
C22C 38/14
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
14containing titanium or zirconium
C21D 8/02
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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
CPC
B22D 7/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
7Casting ingots, ; e.g. from ferrous metals
C21D 1/60
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
56characterised by the quenching agents
60Aqueous agents
C21D 1/84
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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
84Controlled slow cooling
C21D 6/001
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
6Heat treatment of ferrous alloys
001containing Ni
C21D 6/005
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
6Heat treatment of ferrous alloys
005containing Mn
C21D 6/008
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
6Heat treatment of ferrous alloys
008containing Si
Applicants 宝山钢铁股份有限公司
Inventors 刘自成
李先聚
Agents 上海开祺知识产权代理有限公司 31114
Title
(ZH) 超高韧性、优良焊接性HT550钢板及其制造方法
Abstract
(ZH) 超高韧性、优良焊接性HT550钢板及其制造方法,采用超低C-高Mn-Nb微合金化-超微Ti处理的成分体系作为基础,控制Mn/C在15~30、(%Si)×(%Ceq)≤0.050、(%C)×(%Si)≤0.010、(%Mo)×[(%C)+0.13(%Si)]在0.003~0.020、Ti/N=2.0~4.0、(Cu+Ni+Mo)合金化,Ni/Cu≥1.0、Ca处理,Ca/S比在0.80~3.00,通过优化TMCP工艺,使钢板显微组织为细小铁素体+自回火贝氏体,平均晶粒尺寸15μm以下,屈服强度≥460MPa、抗拉强度550MPa~700MPa、屈强比≤0.85、-60℃的Charpy冲击功(单个值)≥60J;在获得均匀优良的强韧性、强塑性匹配的同时,钢板可承受大热输入焊接,特别适用于跨海桥梁结构、海洋风塔结构、海洋平台结构及水电结构。