The invention belongs to the field of metal materials, in particular to a hot rolling alloy steel plate with fatigue resistance and high wear resistance, and a production method thereof. In view of the problems of poor strength and wearability and poor thermal fatigue resistance of the existing brake drum materials, the invention provides a hot continuous rolling alloy steel plate for anti fatigue and high abrasion brake drum and its production method. The composition of the steel plate is: C:0.32 to 0.42%, Si:0.20 to 0.35%, Mn:0.45 ~ 0.70%, Cr:1.00 by weight percentage. 1.15%, P: < 0.015%, S: < 0.006%, Mo:0.25 ~ 0.35%, Ni:0.10 ~ 0.20%, sigma RE:0.015 to 0.050%, V:0.10 to 0.15%, Ti: less than 0.015%, and the rest Fe and unavoidable impurities. In production, the heating temperature and rolling temperature are strictly controlled. Laminar sparse cooling is adopted after finishing rolling. The prepared steel plate has the advantages of good mechanical properties and high wear resistance. It can be used in the brake drum, and the economic benefit is obvious.
【技术实现步骤摘要】
抗疲劳高耐磨刹车鼓用热连轧合金钢板及其生产方法
本专利技术属于金属材料领域,具体涉及一种抗疲劳高耐磨刹车鼓用热连轧合金钢板及其生产方法。
技术介绍
目前,国内车用制动鼓,大部分采用珠光体灰铸铁材料,外表面大多为光滑结构,少部分产品的圆周外表面只有若干条纵向的与制动鼓轴线平行的筋条。采用这些结构的制动鼓不足之处在于:①容易因材料不合格而导致掉底;抗拉强度过低;因热冲击而容易引起开裂和龟裂。②制动鼓散热不及时,热量迅速传递给橡胶轮胎,导致胎压升高,轮胎爆裂的危险性大大增加,从而降低了制动安全性和可靠性。为了克服上述缺陷,对刹车鼓材料的性能提出了更高的要求。目前生产刹车鼓的材料主要有铁素体铸铁、珠光体铸铁等。铁素体铸铁在重载工况下使用时强度和耐磨性不足,易变形,机加工时粘刀,表面光洁度差;珠光体铸铁一般需加入Cr、Mo、RE、Cu等合金元素并配合进行热处理,生产成本较高,而其导热性、强度、耐磨性也低于铁素体铸铁。申请号为CN201410361786.X的专利公开了一种钢板,釆用Mn~Si~V~Re合金,化学成份(质量分数)为:C:0.10~0.30%,Mn:1.2~2. ...
【技术保护点】
抗疲劳高耐磨刹车鼓用热连轧合金钢板,其特征在于,组成成分为:按重量百分比计,C:0.32~0.42%,Si:0.20~0.35%,Mn:0.45~0.70%,Cr:1.00~1.15%,P:≤0.015%,S:≤0.006%,Mo:0.25~0.35%,Ni:0.10~0.20%,∑RE:0.015~0.050%,V:0.10~0.15%,Ti:≤0.015%,其余为Fe和不可避免的杂质。
【技术特征摘要】
1.抗疲劳高耐磨刹车鼓用热连轧合金钢板,其特征在于,组成成分为:按重量百分比计,C:0.32~0.42%,Si:0.20~0.35%,Mn:0.45~0.70%,Cr:1.00~1.15%,P:≤0.015%,S:≤0.006%,Mo:0.25~0.35%,Ni:0.10~0.20%,∑RE:0.015~0.050%,V:0.10~0.15%,Ti:≤0.015%,其余为Fe和不可避免的杂质。2.根据权利要求1所述的抗疲劳高耐磨刹车鼓用热连轧合金钢板,其特征在于,组成成分为:按重量百分比计,C:0.32~0.36%,Si:0.22~0.30%,Mn:0.50~0.60%,Cr:1.05~1.12%,P:≤0.013%,S:≤0.004%,Mo:0.28~0.31%,Ni:0.12~0.16%,∑RE:0.025~0.045%,V:0.13~0.15%,Ti:0.008~0.015%,其余为Fe和不可避免的杂质。3.权利要...
【专利技术属性】
技术研发人员:罗许,李俊洪,陈俊,肖强,
申请(专利权)人:攀钢集团攀枝花钢铁研究院有限公司,
类型:发明
国别省市:四川,51
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