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发明公开
CN103938078A 重卡超厚钢制轮辐用钢及其制造方法 无效 - 驳回

重卡超厚钢制轮辐用钢及其制造方法
摘要：
本发明属于轧钢技术领域，涉及一种重卡超厚钢制轮辐用钢及其制造方法，微量元素质量百分比：碳：0.07～0.12%；硅：0.05～0.15%；锰：0.7～1.1%；铌：0.01～0.03%；钛：0.01～0.03%；磷：≤0.015%；硫：≤0.005%；铝：0.02～0.05%；氮:≤0.006%，制造方法为经KR脱硫和LF法处理得到铸坯，进行粗轧与精轧，层流冷却，卷取得到所需钢。本发明通过冶炼出上述微量元素质量百分比的铸坯，并采用低温加热、低温轧制及高温卷取的工艺，满足了重卡轮辐用钢对易旋压性、表面质量及性能稳定性的要求，大大降低了重卡车轮崩口破碎率。
摘要（英）：

The invention relates to the technical field of steel rolling, and relates to steel for heavy-truck super-thick steel-made spokes and a manufacturing method of steel. The steel comprises the following trace elements in percent by mass: carbon, 0.07~0.12%; silicon, 0.05-0.15%; manganese, 0.7-1.1%; niobium, 0.01-0.03%; titanium, 0.01-0.03%; phosphor, <=0.015%; sulfur, <=0.005%; aluminium, 0.02-0.05%; and nitrogen, <=0.006%. The manufacturing method comprises: performing KR desulphurization and LF-method processing to obtain casting blanks, performing rough rolling and finish rolling, and performing laminar flow cooling and reeling to obtain the needed steel. By utilizing smelting to obtain the casting blanks with the above trace-element mass percentages and employing the technologies of low-temperature heating, low-temperature rolling and high-temperature reeling, the demands of heavy-truck spokes on easy spinning property, surface quality and performance stability are satisfied, and the collapsing crushing rate of heavy-truck wheels is substantially reduced.

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