电接触表面淬火是利用接触电阻来加热另件表面,利用被淬火另件本身的热传导冷却,来达到通贷面淬火的目的。我厂制造了一台导轨淬火磨光联合机组,成功地将电接触表面淬火这一新工艺应用于机床导轨淬火,实践证明效果良好。铸铁导轨经淬火后,硬度可达Rc57一63,淬硬深度达0 .31一0.33毫米。 Electrical contact surface hardening is the use of contact resistance to heat the surface of the other pieces, the use of quenched pieces of their own conduction cooling, to achieve the purpose of surface credit quenching. I plant a rail quenching polishing combined unit, the successful electrical contact surface hardening of the new technology used in machine tool quenching, the practice proved effective. Cast iron rail after quenching, the hardness of up to Rc57 a 63, hardened depth of 0.31 a 0.33 mm.