CN1055316C - 一种低碳高强韧性钢带及其制造工艺 - Google Patents

一种低碳高强韧性钢带及其制造工艺 Download PDF

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CN1055316C
CN1055316C CN98113782A CN98113782A CN1055316C CN 1055316 C CN1055316 C CN 1055316C CN 98113782 A CN98113782 A CN 98113782A CN 98113782 A CN98113782 A CN 98113782A CN 1055316 C CN1055316 C CN 1055316C
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CN1196397A (zh
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谢燕飞
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Wang Hongke
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Abstract

本发明涉及一种用于工业包装的低碳高强韧性钢带及其制造工艺,是采用低碳合金钢,适用的化学成分范围是:含C0.1-0.24%、Mn1.2-2.0%、Si0.17-1.4%、B≤0.0035%、P≯0.04%、S≯0.045%。所采用的热处理工艺是经过880-950℃水淬后,再经750-840℃水淬替代油淬后高温回火,其力学性能可达到σb≥980MPa、σ5≥10%。本发明可替代30CrMo钢生产高强韧性包装用的钢带,还适用低碳高强韧性钢板及带钢的生产,吨钢成本可降低40%以上。

Description

一种低碳高强韧性钢带及其制造工艺
本发明涉及一种用于工业包装的低碳高强韧性钢带及其制造工艺。
目前,传统的冷轧钢带热处理大多沿用带保护气氛的罩式退火炉或连续式发兰炉来生产,其工艺目的是达到改善冷加工性能和消除冷加工硬化。对于高强度钢带则需采用中碳或高碳及其合金钢来制造,往往需要经过予先退火、中间退火和成品退火,不仅成本高,而且还增加了工艺的复杂性和难度。近年来开始采用30CrMo等中碳合金钢经过油淬后高温回火的工艺生产高强韧性包装用钢带,不仅工艺复杂、成本高,而且还会由于油淬而导致环境污染、劳动条件恶劣及产生火灾隐患等。
本发明的目的是提供一种采用低碳合金钢代替中高碳合金钢制造高强韧性钢带及其制造工艺,本发明还适用于低碳高强韧性冷轧钢板及冷轧带钢的生产。
本发明低碳高强韧性钢带及其制造工艺内容简述:
本发明低碳高强韧性钢带,其特征在于采用低碳合金钢,适用的化学成分范围是:含C 0.1--0.24%、Mn 1.2--2.0%、Si 0.17--1.4%、B≤0.0035%、P≯0.04%、S≯0.045%。
本发明低碳高强韧性钢带的制造工艺,其特征在于:热处理工艺采用880--950℃水淬后,再经750--840℃水淬替代油淬后高温回火,其力学性能可达σb≥980MPa、δ5≥10%。
本发明低碳高强韧性钢带可用于替代30CrMo钢生产的高强韧性包装用的钢带,其制造工艺还适用于低碳高强韧性钢板及带钢的生产。本发明用于生产弹簧,其力学性能可达σp0.2=1230MPa,σb=1613MPa,δ5=8.5%,ψ=38%,且无脱碳之忧。本发明用于生产精密片式链条,可在淬火态的带钢上直接冲压成型后,无需再经热处理,因而无热处理变形之虑。本发明还可用于生产汽车用保险杠,大梁等冷弯型钢以及钢圈等高强韧性零部件,可节省原材料,减轻汽车的重量。本发明用途广泛,既无脱碳、淬裂、变形之忧、又无油淬、回火之烦,与30CrMo钢对比,吨钢成本可降低40%以上,具有显著的经济效益。
实施例:
选取一种低碳合金钢,其化学成分是:含C 0.16%、Mn1.5%、Si 0.4%、P 0.038%、S 0.04%,选用的原料是3mm厚的热轧板卷,其热轧态的力学性能是σp0.2=360MPa,σb=500MPa,δ5=7.5%,该板卷先经纵剪成3.0×155mm的带钢卷,按常规酸洗后冷连轧成0.9×155mm的带钢,其冷连轧后的力学性能:σp0.2=860MPa,σb=910MPa,δ5=5%。带钢在连续发兰炉生产线上直接纵剪成所需宽度的钢带,并送入连续电阻加热炉中加热至940℃水淬后,再经过连续电阻加热炉加热至810℃水淬。两次水淬后的力学性能:σp0.2=975MPa,σb=1210MPa,δ5=17%。该力学性能达到并超过了GB4173-84,表4中最高级别的VI组性能要求:σb≥980MPa,δ5≮12%,d=a冷弯180°试验合格。还同时达到GB3525-83《弹簧钢、工具钢冷轧钢带》冷硬状态的技术要求,则σb≥735-1175MPa。钢带在淬火态还可从0.9mm厚冷连轧至0.22mm,减面率达76%,具有很好的冷成型性,可用于替代30CrMo钢生产高强韧性包装用钢带,生产弹簧、精密片式链条、汽车用保险杠、大梁等冷弯型钢及钢圈和板簧等高强韧性产品。

Claims (2)

1.一种低碳高强韧性钢带,其特征在于:采用低碳合金钢,适用的化学成分范围是:含C 0.1--0.24%、Mn 1.2--2.0%、Si 0.17%--1.4%、B≤0.0035%、 P≯0.04%、S≯0.045%,余量为Fe。
2.根据权利要求1所述的低碳高强韧性钢带的制造工艺,其特征在于其热处理工艺为:采用880--950℃水淬后,再经750--840℃水淬。
CN98113782A 1998-02-25 1998-02-25 一种低碳高强韧性钢带及其制造工艺 Expired - Fee Related CN1055316C (zh)

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CN110669918A (zh) * 2019-10-16 2020-01-10 安庆锦泰金属材料科技有限公司 一种高韧性钢带热处理淬火工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718411A1 (fr) * 1994-12-21 1996-06-26 Sollac S.A. Procédé de fabrication d'une bande d'acier destinée a la fabrication par emboutissage et re-emboutissage de recipients en acier
WO1997011204A1 (fr) * 1995-09-19 1997-03-27 Toyo Kohan Co., Ltd. Materiau de blindage magnetique, son procede de production et tube image couleur reunissant ce materiau

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718411A1 (fr) * 1994-12-21 1996-06-26 Sollac S.A. Procédé de fabrication d'une bande d'acier destinée a la fabrication par emboutissage et re-emboutissage de recipients en acier
WO1997011204A1 (fr) * 1995-09-19 1997-03-27 Toyo Kohan Co., Ltd. Materiau de blindage magnetique, son procede de production et tube image couleur reunissant ce materiau

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