CN115233100A - 一种海洋工程用镀锌钢丝绳的生产工艺 - Google Patents

一种海洋工程用镀锌钢丝绳的生产工艺 Download PDF

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CN115233100A
CN115233100A CN202210856584.7A CN202210856584A CN115233100A CN 115233100 A CN115233100 A CN 115233100A CN 202210856584 A CN202210856584 A CN 202210856584A CN 115233100 A CN115233100 A CN 115233100A
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施正龙
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Abstract

本发明属于海工钢丝绳生产领域,提供了一种海洋工程用镀锌钢丝绳的生产工艺,包括以下步骤:S1、盘条的表面处理:对盘条表面除锈、酸洗、水洗、喷淋;盘条成分的重量百分含量为:C:0.90%‑0.95%,Mn:0.30%‑0.60%,Si:0.15%‑0.35%,Cr:0.20%‑0.30%,Ni:0.03%‑0.05%,Ti≤0.02%;S≤0.030%,P≤0.030%;S2、第一次拉拔;S3、热处理;S4、第二次拉拔;S5、镀锌;S6、收线、检验、入库。本发明的一种海洋工程用镀锌钢丝绳的生产工艺,通过调整成分及重量百分含量,提高钢丝强度,及韧性,从而增加钢丝绳的疲劳寿命。

Description

一种海洋工程用镀锌钢丝绳的生产工艺
技术领域
本发明涉及海工钢丝绳生产领域,尤其涉及一种海洋工程用镀锌钢丝绳的生产工艺。
背景技术
海工钢丝绳是指海工钢丝绳是指海洋工程装备所使用的钢丝绳。当前我国海洋经济发展正从浅海走向深海,海洋工程建设蓬勃开展,随之海工钢丝绳需求量越来越大,质量要求越来越高。
海洋用镀锌钢丝绳使用环境恶劣,时间跨度长,对钢丝绳的总体性能要求高,要求钢丝镀锌加工后依然有较高的抗拉强度。
通常提高强度的手段为添加S和V,对珠光体中的铁素体进行固溶强化和沉淀强化,或提高渗碳体含量即C质量分数;但是,这种方法得到的钢丝绳强度得到了保证,但是韧性得不到提高,会使钢丝绳的疲劳寿命得不到很高的改进。
发明内容
本发明的一种海洋工程用镀锌钢丝绳的生产工艺,通过调整成分及重量百分含量,提高钢丝强度,及韧性,从而增加钢丝绳的疲劳寿命。
本发明提供的技术方案如下:一种海洋工程用镀锌钢丝绳的生产工艺,包括以下步骤:
S1、盘条的表面处理:对盘条表面除锈、酸洗、水洗、喷淋;盘条成分的重量百分含量为:C:0.90%-0.95%,Mn:0.30%-0.60%,Si:0.15%-0.35%,Cr:0.20%-0.30%,Ni:0.03%-0.05%,Ti≤0.02%;S≤0.030%,P≤0.030%;
S2、第一次拉拔:将盘条通过拉丝机进行冷拔丝处理,得到钢丝;
S3、热处理:将步骤S2中的钢丝放入熔融状态的铅浴中等温淬火,冷却后,清除钢丝表面油污;
S4、第二次拉拔:将步骤S3中热处理后的钢丝通过拉丝机再次进行冷拔丝处理;
S5、镀锌:钢丝表面镀上均匀的锌层;
S6、收线、检验、入库。
进一步的,步骤S1中盘条成分的重量百分含量为:C:0.95%,Mn:0.55%,Si:0.35%,Cr:0.3%,Ni:0.04%,Ti:0.02%,S:0.03%,P:0.03%。
进一步的,步骤S2中,第一次拉拔工序为5道次拉拔,总压缩率为:60%,平均部分压缩率为:23%。
进一步的,步骤S3中的等温淬火工艺中,加热段炉温为:910-930℃,铅温为:510-520℃,索氏体率达93%-95%。
进一步的,步骤S4中,第二次拉拔工序为13道次拉拔,总压缩率为:80%,平均部分压缩率为:15.5%。
进一步的,步骤S5中,镀锌抹拭电流为400-520A,氮气温度为:350℃,氮气流量为300L/min,锌液温度为:480℃。
进一步的,步骤S5中,钢丝锌层重量为:200g/m2
与现有技术相比,本发明的有益效果是:
(1)本发明的镀锌钢丝绳的生产工艺,通过调整盘条成分及百分比,用于改善基体的韧度,使制得的钢丝绳不仅可以满足高强度需求,同时,还提高了钢丝的韧度,降低了钢丝绳断裂的风险。
(2)本发明的镀锌钢丝绳的生产工艺,通过多道次小压缩率的拉拔,增加了钢丝绳的强度,又能有合适的弯曲性和扭转性。
(3)本发明的镀锌钢丝绳的生产工艺,通过调整热处理工艺的温度,使热处理后钢丝的金相组织以索氏体为主,且体积分数达到93%-95%。
附图说明
图1是本发明镀锌钢丝绳的生产工艺步骤流程图。
具体实施方式
以下结合附图和实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。
如图1所示,本发明是一种海洋工程用镀锌钢丝绳的生产工艺,包括以下步骤:
S1、盘条的表面处理:对盘条表面除锈、酸洗、水洗、喷淋;盘条成分的重量百分含量为:C:0.90%-0.95%,Mn:0.30%-0.60%,Si:0.15%-0.35%,Cr:0.20%-0.30%,Ni:0.03%-0.05%,Ti≤0.02%;S≤0.030%,P≤0.030%。
本实施例所优选的,盘条成分的重量百分含量为:C:0.95%,Mn:0.55%,Si:0.35%,Cr:0.3%,Ni:0.04%,Ti:0.02%,S:0.03%,P:0.03%。
通过添加元素Ti,使盘条在热处理时,能够实现晶体细化,可以有效的阻止奥氏体的生成,使索氏体的化率增加,增加了钢丝的强度。
本实施例的盘条放入密度盐酸池内酸洗2-10min,摆动2-3次,酸洗液成分的质量百分为10%~15%盐酸,5%~12.5%FeCl2
S2、第一次拉拔:将盘条通过拉丝机进行冷拔丝处理,得到钢丝。
本实施例的第一次拉拔工序为5道次拉拔,总压缩率为:60%,平均部分压缩率为:23%。
S3、热处理:将步骤S2中的钢丝放入熔融状态的铅浴中等温淬火,冷却后,清除钢丝表面油污。
本实施例的加热段炉温为:910-930℃,铅温为:510-520℃,索氏体率达93%-95%。
本实施例的热处理工艺后的钢丝金相组织为:索氏体+珠光体。
S4、第二次拉拔:将步骤S3中热处理后的钢丝通过拉丝机再次进行冷拔丝处理。
本实施例的第二次拉拔工序为13道次拉拔,总压缩率为:80%,平均部分压缩率为:15.5%。
S5、镀锌:钢丝表面镀上均匀的锌层。
本实施例采用电磁抹拭加氮气保护方式,在氮气保护作用下,对镀锌层进行电磁抹拭,锌槽有效长度5.3m,生产中镀锌工序车速为60m/mino,镀锌抹拭电流为400-520A,氮气温度为:350℃,氮气流量为300L/min,锌液温度为:480℃。
实施例的钢丝锌层重量为:200g/m2
本实施例的镀锌层为厚镀层。
S6、收线、检验、入库。
本实施例所得镀锌钢丝的性能如下:
规格/mm 抗拉强度/MPa 延伸率/% 扭转/次 弯曲/次
2.48 1980 6.0 35 17
2.48 2030 5.0 23 10
2.48 2100 4.6 17 10
本发明镀锌钢丝绳的生产工艺生产的钢丝的力学性能:抗拉强度大于1960MPa、扭转次数大于30次、弯曲次数大于15次。

Claims (7)

1.一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,包括以下步骤:
S1、盘条的表面处理:对盘条表面除锈、酸洗、水洗、喷淋;盘条成分的重量百分含量为:C:0.90%-0.95%,Mn:0.30%-0.60%,Si:0.15%-0.35%,Cr:0.20%-0.30%,Ni:0.03%-0.05%,Ti≤0.02%;S≤0.030%,P≤0.030%;
S2、第一次拉拔:将盘条通过拉丝机进行冷拔丝处理,得到钢丝;
S3、热处理:将步骤S2中的钢丝放入熔融状态的铅浴中等温淬火,冷却后,清除钢丝表面油污;
S4、第二次拉拔:将步骤S3中热处理后的钢丝通过拉丝机再次进行冷拔丝处理;
S5、镀锌:钢丝表面镀上均匀的锌层;
S6、收线、检验、入库。
2.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S1中盘条成分的重量百分含量为:C:0.95%,Mn:0.55%,Si:0.35%,Cr:0.3%,Ni:0.04%,Ti:0.02%,S:0.03%,P:0.03%。
3.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S2中,第一次拉拔工序为5道次拉拔,总压缩率为:60%,平均部分压缩率为:23%。
4.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S3中的等温淬火工艺中,加热段炉温为:910-930℃,铅温为:510-520℃,索氏体率达93%-95%。
5.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S4中,第二次拉拔工序为13道次拉拔,总压缩率为:80%,平均部分压缩率为:15.5%。
6.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S5中,镀锌抹拭电流为400-520A,氮气温度为:350℃,氮气流量为300L/min,锌液温度为:480℃。
7.如权利要求1所述的一种海洋工程用镀锌钢丝绳的生产工艺,其特征在于,步骤S5中,钢丝锌层重量为:200g/m2
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CN116460164A (zh) * 2023-05-06 2023-07-21 无锡市时捷钢绳有限公司 一种低损耗长寿命用钢丝绳及其加工工艺

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