CN109487168A - 用于制作镀锌件的高强度钢及其冷拔管的加工方法 - Google Patents
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Abstract
本发明公开了一种用于制作镀锌件的高强度钢,每一重量份该钢材包含如下各重量组份:碳C:0.2‑0.23;硅Si:0.4‑0.44;锰Mn:1.4‑1.7;磷P:≤0.02;硫S:≤0.015;铬Cr:0.03‑0.12;镍Ni:≤0.01钼Mo:≤0.01;铜Cu:≤0.05;铝Al:0.02‑0.04;钛Ti:0.01‑0.02;钒V:0.04‑0.06;铌Nb:≤0.06;硼B:≤0.001;钨W:≤0.015;锡Sn:≤0.001;铅Pb:≤0.001;砷As:≤0.05;锑Sb:≤0.001;铋Bi:0.001‑0.02;其余为铁Fe。本发明还公开了该高强度钢的冷拔管加工方法。
Description
技术领域
本发明涉及一种用于制作镀锌件的高强度钢及其冷拔管的加工方法。
背景技术
目前,在各行各业中,都很青睐强度高以减少钢材消耗且塑性好、加工性能好、性价比高的钢材。例如,新能源汽车由于其不使用汽油和柴油作为动力燃料,因此在国内乃至国际上都将新能源汽车作为下一代汽车发展计划,并且很多国家都已公布燃油车禁售时间表。在新能源汽车零部件选材时,为了减重不减质量,企业更多的选择强度高、塑性好的金属材料。又如高压线架,由于处于室外环境,且对强度要求十分严格,高强度且耐腐蚀、性价比高的材料可有效减轻安装难度。
发明内容
本发明所要解决的技术问题是:提供一种具有良好的可焊性、优异的热浸镀锌性能的用于制作镀锌件的高强度钢。
为解决上述技术问题,本发明所采用的技术方案为:一种用于制作镀锌件的高强度钢,每一重量份该钢材包含如下各重量组份:碳C:0.2-0.23;硅Si:0.4-0.44;锰Mn:1.4-1.7;磷P:≤0.02;硫S:≤0.015;铬Cr:0.03-0.12;镍Ni:≤0.01钼Mo:≤0.01;铜Cu:≤0.05;铝Al:0.02-0.04;钛Ti:0.01-0.02;钒V:0.04-0.06;铌Nb:≤0.06;硼B:≤0.001;钨W:≤0.015;锡Sn:≤0.001;铅Pb:≤0.001;砷As:≤0.05;锑Sb:≤0.001;铋Bi:0.001-0.02;其余为铁Fe。
本材料的有益效果是:本钢材有稳定的力学性能、良好的可焊性、优异的热浸镀锌效果;
本钢材的抗拉强度可达700-800MP;屈服强度为500-600MP;延伸率≥17%;比Q345屈服强度高30%以上,在同样强度要求的钢管杆的设计时,可以节约10~18%的材料;所以可广泛用于汽车等产品上。
本钢材在热镀锌过程中比Q345锌消耗要低30%甚至更多,这是由于钢的基材成分不同造成的;且本钢材热浸镀锌外观效果好、色泽均匀、锌层厚度一致而且锌层附着牢,防腐效果好,用于汽车或高压线架等产品上时,可大大降低了今后在运行期间的防腐维护的人力材料等费用。
本发明所要解决的另一个技术问题是:提供一种基于上述高强度钢的冷拔管的加工方法。
为解决上述技术问题,本发明所采用的技术方案为:一种便于镀锌的高强度钢冷拔管的加工方法,其步骤为:
A.棒材穿孔:
将采用如上所述材质制成的圆棒坯料加热至1180-1200摄氏度,然后进行穿孔;接着依次进行轧管、脱管加工,然后将坯管冷却,然后进行坯管矫直及探伤处理;
B.热处理:
正火:将合格的坯管放入加热炉中,升温至900±30摄氏度,保温30-50分钟,取出后在室内自然冷却;
回火:将钢管放入加热炉中,升温至500±20摄氏度,保温40-50分钟;然后在炉内冷却至室温;
C.预处理:将钢管进行酸洗、磷化、皂化处理;
D.冷拔;
E.低温退火:将冷拔后的钢管放入加热炉中加热至700±50摄氏度,保温40-50分钟,然后取出常温冷却。
本方法的有益效果是:本管材有稳定的力学性能、良好的可焊性、优异的热浸镀锌效果。
具体实施方式
下面详细描述本发明的具体实施方案。
一种用于制作镀锌件的高强度钢,每一重量份该钢材包含如下各重量组份:碳C:0.2-0.23;硅Si:0.4-0.44;锰Mn:1.4-1.7;磷P:≤0.02;硫S:≤0.015;铬Cr:0.03-0.12;镍Ni:≤0.01钼Mo:≤0.01;铜Cu:≤0.05;铝Al:0.02-0.04;钛Ti:0.01-0.02;钒V:0.04-0.06;铌Nb:≤0.06;硼B:≤0.001;钨W:≤0.015;锡Sn:≤0.001;铅Pb:≤0.001;砷As:≤0.05;锑Sb:≤0.001;铋Bi:0.001-0.02;其余为铁Fe。
一种便于镀锌的高强度钢冷拔管的加工方法,其步骤为:
A.棒材穿孔:
采用如下所述钢材制成圆棒坯料:每一重量份该钢材包含如下各重量组份:碳C:0.2;硅Si:0.42;锰Mn:1.5;磷P:0.015;硫S:0.01;铬Cr:0.07;镍Ni:0.008钼Mo:0.005;铜Cu:0.04;铝Al:0.04;钛Ti:0.015;钒V:0.04;铌Nb:0.053;硼B:0.0007;钨W:0.011;锡Sn:0.0009;铅Pb:0.0006;砷As:0.044;锑Sb:0.0005;铋Bi:0.001;其余为铁Fe,将圆棒坯料加热至1180-1200摄氏度,然后进行穿孔;接着依次进行轧管、脱管加工,然后将坯管冷却,然后进行坯管矫直及探伤处理;
B.热处理:
正火:将合格的坯管放入加热炉中,升温至890摄氏度,保温50分钟,取出后在室内自然冷却;
回火:将钢管放入加热炉中,升温至480摄氏度,保温50分钟;然后在炉内冷却至室温;
C.预处理:将钢管进行酸洗、磷化、皂化处理;
D.冷拔;
E.低温退火:将冷拔后的钢管放入加热炉中加热至650摄氏度,保温50分钟,然后取出常温冷却。
产品技术指标如下:
产品冲击试验指标如下:
指标项目 | 测量数值 |
0度 | 81J |
-20度 | 53J |
-40度 | 39J |
一种便于镀锌的高强度钢冷拔管的加工方法,其步骤为:
A.棒材穿孔:
采用如下所述钢材制成圆棒坯料:每一重量份该钢材包含如下各重量组份:碳C:0.23;硅Si:0.44;锰Mn:1.7;磷P:0.02;硫S:0.015;铬Cr:0.09;镍Ni:0.01;钼Mo:0.01;铜Cu:0.05;铝Al:0.02;钛Ti:0.01;钒V:0.04;铌Nb:0.06;硼B:0.001;钨W:0.015;锡Sn:0.001;铅Pb:0.001;砷As:0.05;锑Sb:0.001;铋Bi:0.001;其余为铁Fe,圆棒坯料加热至1200摄氏度,然后进行穿孔;接着依次进行轧管、脱管加工,然后将坯管冷却,然后进行坯管矫直及探伤处理;
B.热处理:
正火:将合格的坯管放入加热炉中,升温至930摄氏度,保温35分钟,取出后在室内自然冷却;
回火:将钢管放入加热炉中,升温至520摄氏度,保温40分钟;然后在炉内冷却至室温;
C.预处理:将钢管进行酸洗、磷化、皂化处理;
D.冷拔;
E.低温退火:将冷拔后的钢管放入加热炉中加热至750摄氏度,保温40分钟,然后取出常温冷却。
产品技术指标如下:
指标项目 | 测量数值 |
抗拉强度σb/MPa | 767 |
屈服强度σs/MPa | 584 |
伸长率δ/% | 28 |
产品冲击试验指标如下:
指标项目 | 测量数值 |
0度 | 83J |
-20度 | 57J |
-40度 | 42J |
上述的实施例仅例示性说明本发明创造的原理及其功效,以及部分运用的实施例,而非用于限制本发明;应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (2)
1.一种用于制作镀锌件的高强度钢,每一重量份该钢材包含如下各重量组份:碳C:0.2-0.23;硅Si:0.4-0.44;锰Mn:1.4-1.7;磷P:≤0.02;硫S:≤0.015;铬Cr:0.03-0.12;镍Ni:≤0.01钼Mo:≤0.01;铜Cu:≤0.05;铝Al:0.02-0.04;钛Ti:0.01-0.02;钒V:0.04-0.06;铌Nb:≤0.06;硼B:≤0.001;钨W:≤0.015;锡Sn:≤0.001;铅Pb:≤0.001;砷As:≤0.05;锑Sb:≤0.001;铋Bi:0.001-0.02;其余为铁Fe。
2.一种便于镀锌的高强度钢冷拔管的加工方法,其步骤为:
A.棒材穿孔:
将采用如权利要求1所述材质制成的圆棒坯料加热至1180-1200摄氏度,然后进行穿孔;接着依次进行轧管、脱管加工,然后将坯管冷却,然后进行坯管矫直及探伤处理;
B.热处理:
正火:将合格的坯管放入加热炉中,升温至900±30摄氏度,保温30-50分钟,取出后在室内自然冷却;
回火:将钢管放入加热炉中,升温至500±20摄氏度,保温40-50分钟;然后在炉内冷却至室温;
C.预处理:将钢管进行酸洗、磷化、皂化处理;
D.冷拔;
E.低温退火:将冷拔后的钢管放入加热炉中加热至700±50摄氏度,保温40-50分钟,然后取出常温冷却。
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CN110964989A (zh) * | 2019-11-13 | 2020-04-07 | 浙江金洲管道科技股份有限公司 | 用于核电的超重荷型刚性钢导管及其制造方法 |
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JP2007262469A (ja) * | 2006-03-28 | 2007-10-11 | Jfe Steel Kk | 鋼管およびその製造方法 |
CN105364412A (zh) * | 2014-08-30 | 2016-03-02 | 无锡市神陆液压机件有限公司 | 一种冷拔高强度精镗滚压管的制造方法 |
CN107746916A (zh) * | 2017-11-06 | 2018-03-02 | 山东墨龙石油机械股份有限公司 | 一种油缸用无缝钢管的制造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN110964989A (zh) * | 2019-11-13 | 2020-04-07 | 浙江金洲管道科技股份有限公司 | 用于核电的超重荷型刚性钢导管及其制造方法 |
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