【摘要】 进行了55SiMnMo中空钢控制轧制的研究。作了控制不同终轧温度及轧后冷却速度的工艺试验,并结合生产实际进行了两次生产性试验。测定在适宜的终轧温度和冷却速度下轧材的硬度波动范围和硬度合格率,以判断控轧工艺在55SiMnMo中空钢生产中的实用性。更多还原

【Abstract】 The controlled rolling of hollow drill steel 55SiMnMo has been studied. A series of experiments on different finishing temperatures and cooling rates and two indust-rial experiments were carried out in consideration of the practical condition in the mill. In order to evaluate the practicability of this controlled rolling technique in the productionof hollow drill steel 55SiMnMo,the undulating range and the qualified rate of hardness of the steelwere measured under the proper finishing temperatures and cooling rates.更多还原