超快冷条件下610MPa水电钢减量化工业试制

Industrial Trial Production of 610 MPa Hydropower Steel by Super-rapid Cooling Technology Based on Reduction of Alloying Elements

为降低生产成本,对降低合金成分的610 MPa水电钢采用超快冷代替常规调质工艺进行了研究,确定了实际生产条件下TMCP-UFC的主要工艺参数。研究表明,合金减量后新工艺生产的610 MPa水电钢屈服强度大于590 MPa,抗拉强度大于660 MPa,-20℃CVN冲击吸收功达330 J以上,完全满足610 MPa水电钢的使用要求,达到了减量化生产及降低生产成本的目标。

In order to reduce production cost,the super-rapid cooling technology instead of conventional quenching and tempering technology which is applied in producing the 610 MPa hydropower steel with reducing adding content of alloying elements is studied and thus the main technical parameters on TMCP-UFC during actual production are determined.The studied results show that the values of yield strength,tensile strength and CVN impact energy at-20 ℃ of the 610 MPa hydropower steel produced by the new cooling technology when adding less content of alloying elements are more than 590 MPa,660 MPa and 330 J respectively.It is concluded that the 610 MPa hydroelectric steel can meet the requirements asked by working conditions and the goals of both reducing adding content of alloying elements and cutting down the production cost are realized.