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我厂在生产 T 618卧式搪床时,学习了兄弟单位的经验,制造了一台电接触表面淬火机,经在搪床床身及立柱上进行试验,效果良好。一、基本原理和特点:电接触表面淬火是利用接触电阻来加热工件表面,再利用工件本身的热传导使已加热的奥氏体组织迅速冷却,转变成马氏体组织,从而达到局部淬火的目的,采用这种淬火工艺,具有工件耐磨性高,淬火变形小;所需设备简单、轻巧、容易上马;经淬硬后的导轨再修复容
Our factory in the production of T 618 horizontal boring machine, the brothers learned the experience of the unit, manufactured an electrical contact surface hardening machine, the bed bed and column in the bedside test, the effect is good. First, the basic principles and characteristics: Electrical contact surface hardening is the use of contact resistance to heat the workpiece surface, and then use the workpiece itself, the heat conduction so that the austenitic tissue has been rapidly cooled and transformed into martensite, so as to achieve the purpose of local quenching , The use of this quenching process, with high wear resistance of the workpiece, quenching deformation is small; the required equipment is simple, lightweight, easy to start; after hardened rail repair and repair capacity