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前言目前在飞机生产中,合金钢的用量甚大,其中以30CrMnSiA 钢的用量最多,大部分用来制造钣金冲压和焊接组合结构件,但是30CrMnSiA 钢是采用油淬或等温处理而获得高强度的,由于钢中含碳量较高(0.28～0.35％)而工艺性能较差,生产中经常出现裂纹和变形,为了排除故障和校形,必须耗费大量的钳修工时。为了改变这种状态,我们在 Fortiweld钢的基础上,使1/2Mo-B 中进一步添加强化元素进行合金化,从而获得了一种低碳低合金高
Foreword Currently in the aircraft production, the amount of alloy steel is very large, of which the amount of 30CrMnSiA steel most used to manufacture sheet metal stamping and welding combination of structural parts, but 30CrMnSiA steel is oil quenched or isothermal treatment to obtain high strength , Due to the high carbon content of steel (0.28 ~ 0.35%) and poor process performance, production often cracks and deformation, in order to troubleshoot and shape, you must spend a lot of clamp work hours. In order to change this state, based on the Fortiweld steel, alloying elements in 1 / 2Mo-B were further alloyed to obtain a low carbon and low alloy high