CN114934233A - 一种耐磨钢板及其制造方法 - Google Patents

一种耐磨钢板及其制造方法 Download PDF

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CN114934233A
CN114934233A CN202210690770.8A CN202210690770A CN114934233A CN 114934233 A CN114934233 A CN 114934233A CN 202210690770 A CN202210690770 A CN 202210690770A CN 114934233 A CN114934233 A CN 114934233A
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单东峰
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Jiangsu Shoudun Wear Resistant Material Co ltd
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    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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Abstract

本发明公开了一种耐磨钢板及其制造方法,所述耐磨钢板具体包括下列重量百分比的组分:C:0.15‑0.19%、Si:0.22‑0.35%、Mn:1.1‑1.7%、P:0.007‑0.015%、S:0.001‑0.015%、Cr:0.15‑0.35%、Mo:0.11‑0.17%、Ni:0.015‑0.045%、N≤0.01%、Al:0.025‑0.035%、Ca:0.01‑0.03%、Ti:0.01‑0.03%、V≤0.02%、B:0.001‑0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。本发明涉及耐磨钢板技术领域,具体提供了一种通过改变钢板传统组成原料以及原料组分的耐磨钢板及其制造方法。

Description

一种耐磨钢板及其制造方法
技术领域
本发明涉及耐磨钢板技术领域,具体为一种耐磨钢板及其制造方法。
背景技术
耐磨钢板是指专供大面积磨损工况条件下使用的特种板材产品。常用的耐磨钢板是在韧性、塑性较好的普通低碳钢或者低合金钢表面通过堆焊方法复合一定厚度的硬度较高、耐磨性优良的合金耐磨层而制成的板材产品。另外,还有铸造耐磨钢板和合金淬火耐磨钢板。
随着经济建设的迅猛发展,市场对高强度高硬度耐磨钢板的需求日益增大,尤其是煤矿机械、工程机械、冶金机械、筑路机械及矿山机械工作条件特别恶劣的环境中。随着中国的工程机械行业与国际接轨,用户对钢铁产品的性能和质量提出了更高的要求。用于制造挖掘机、装载机、推土机铲斗板、刃板、破碎机衬板、叶片等,不仅要求耐磨钢有足够的硬度和耐磨性,同时还需要较高的韧性、很好的加工性能、焊接性能等。
发明内容
针对上述情况,为弥补上述现有缺陷,本发明提供了一种通过改变钢板传统组成原料以及原料组分的耐磨钢板及其制造方法。
本发明提供如下的技术方案:本发明提出了一种耐磨钢板,具体包括下列重量百分比的组分:C:0.15-0.19%、Si:0.22-0.35%、Mn:1.1-1.7%、P:0.007-0.015%、S:0.001-0.015%、Cr:0.15-0.35%、Mo:0.11-0.17%、Ni:0.015-0.045%、N≤0.01%、Al:0.025-0.035%、Ca:0.01-0.03%、Ti:0.01-0.03%、V≤0.02%、B:0.001-0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。
本发明提出了一种耐磨钢板的制造方法,具体包括下列步骤:将上述配比的组分依次经过包括冶炼、铸造、加热、轧制、淬火和回火在内的步骤处理,即可获得所述耐热耐磨钢板。
进一步地,所述加热步骤在奥氏体炉中进行,加热温度为900-1050℃,保温时间为1.5-2.5h。
进一步地,所述轧制步骤中开轧温度为1000~1150℃,终轧温度为800~950℃,轧后空冷。
进一步地,所述淬火步骤中采用高压水快速冷却,降温速率控制在50-150℃/s。
进一步地,所述回火步骤中,回火温度为220-250℃,保温时间为15-25min。
采用上述结构本发明取得的有益效果如下:本发明提出的一种耐磨钢板及其制造方法,通过在传统的钢板原料中添加V、Ca和Nd改善耐磨钢板的性能;其中,原料中的V是钢的优良脱氧剂,钢中加V可细化组织晶粒,提高强度和韧性,V与C形成的碳化物在高温高压下还可提高钢的抗氢腐蚀能力;原料中的钙对铸钢中夹杂物的变质具有显著作用,铸钢中加入适量钙可将铸钢中的长条状硫化物夹杂转变为球状的CaS或(Ca,Mn)S夹杂,钙所形成的氧化物及硫化物夹杂密度小,易于上浮排除;钙还显著降低硫在晶界的偏聚,这些都有益于提高铸钢的质量,进而提高钢的性能;原料中的Nd有效的提高了钢板的耐候性。
具体实施方式
下面将结合本发明的实施例,对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例;基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种耐磨钢板,具体包括下列重量百分比的组分:C:0.15-0.19%、Si:0.22-0.35%、Mn:1.1-1.7%、P:0.007-0.015%、S:0.001-0.015%、Cr:0.15-0.35%、Mo:0.11-0.17%、Ni:0.015-0.045%、N≤0.01%、Al:0.025-0.035%、Ca:0.01-0.03%、Ti:0.01-0.03%、V≤0.02%、B:0.001-0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。
本发明提出了一种耐磨钢板的制造方法,具体包括下列步骤:将上述配比的组分依次经过包括冶炼、铸造、加热、轧制、淬火和回火在内的步骤处理,即可获得所述耐热耐磨钢板。其中,所述加热步骤在奥氏体炉中进行,加热温度为900℃,保温时间为2.5h;所述轧制步骤中开轧温度为1000℃,终轧温度为800℃,轧后空冷;所述淬火步骤中采用高压水快速冷却,降温速率控制在50℃/s;所述回火步骤中,回火温度为220℃,保温时间为15min。
实施例2
一种耐磨钢板,具体包括下列重量百分比的组分:C:0.15-0.19%、Si:0.22-0.35%、Mn:1.1-1.7%、P:0.007-0.015%、S:0.001-0.015%、Cr:0.15-0.35%、Mo:0.11-0.17%、Ni:0.015-0.045%、N≤0.01%、Al:0.025-0.035%、Ca:0.01-0.03%、Ti:0.01-0.03%、V≤0.02%、B:0.001-0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。
本发明提出了一种耐磨钢板的制造方法,具体包括下列步骤:将上述配比的组分依次经过包括冶炼、铸造、加热、轧制、淬火和回火在内的步骤处理,即可获得所述耐热耐磨钢板。其中,所述加热步骤在奥氏体炉中进行,加热温度为1050℃,保温时间为1.5h;所述轧制步骤中开轧温度为1150℃,终轧温度为950℃,轧后空冷;所述淬火步骤中采用高压水快速冷却,降温速率控制在150℃/s;所述回火步骤中,回火温度为250℃,保温时间为25min。
实施例3
一种耐磨钢板,具体包括下列重量百分比的组分:C:0.15-0.19%、Si:0.22-0.35%、Mn:1.1-1.7%、P:0.007-0.015%、S:0.001-0.015%、Cr:0.15-0.35%、Mo:0.11-0.17%、Ni:0.015-0.045%、N≤0.01%、Al:0.025-0.035%、Ca:0.01-0.03%、Ti:0.01-0.03%、V≤0.02%、B:0.001-0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。
本发明提出了一种耐磨钢板的制造方法,具体包括下列步骤:将上述配比的组分依次经过包括冶炼、铸造、加热、轧制、淬火和回火在内的步骤处理,即可获得所述耐热耐磨钢板。其中,所述加热步骤在奥氏体炉中进行,加热温度为1000℃,保温时间为2h;所述轧制步骤中开轧温度为1100℃,终轧温度为900℃,轧后空冷;所述淬火步骤中采用高压水快速冷却,降温速率控制在100℃/s;所述回火步骤中,回火温度为235℃,保温时间为20min。
要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物料或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物料或者设备所固有的要素。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。

Claims (6)

1.一种耐磨钢板,其特征在于,具体包括下列重量百分比的组分:C:0.15-0.19%、Si:0.22-0.35%、Mn:1.1-1.7%、P:0.007-0.015%、S:0.001-0.015%、Cr:0.15-0.35%、Mo:0.11-0.17%、Ni:0.015-0.045%、N≤0.01%、Al:0.025-0.035%、Ca:0.01-0.03%、Ti:0.01-0.03%、V≤0.02%、B:0.001-0.003%、Nd≤0.001%,余量Fe和其他不可避免的杂质。
2.根据权利要求1所述的一种耐磨钢板的制造方法,其特征在于,具体包括下列步骤:将上述配比的组分依次经过包括冶炼、铸造、加热、轧制、淬火和回火在内的步骤处理,即可获得所述耐热耐磨钢板。
3.根据权利要求2所述的一种耐磨钢板的制造方法,其特征在于,所述加热步骤在奥氏体炉中进行,加热温度为900-1050℃,保温时间为1.5-2.5h。
4.根据权利要求3所述的一种耐磨钢板的制造方法,其特征在于,所述轧制步骤中开轧温度为1000~1150℃,终轧温度为800~950℃,轧后空冷。
5.根据权利要求4所述的一种耐磨钢板的制造方法,其特征在于,所述淬火步骤中采用高压水快速冷却,降温速率控制在50-150℃/s。
6.根据权利要求5所述的一种耐磨钢板的制造方法,其特征在于,所述回火步骤中,回火温度为220-250℃,保温时间为15-25min。
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Citations (3)

* Cited by examiner, † Cited by third party
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Application publication date: 20220823