表面硬化处理是机械制造工厂保证质量,节约金属材料的有效方法。随着我国建设事业飞跃发展,机械制造产品根据不同的技术要求,普遍而广泛的采用了不同的表面处理方法。表面处理虽然优越性很多,但影响因素也不少,所以检查要求较严。解放十几年来,我国仪器工业已有很大的发展,但还不能满足生 Hardfacing is an effective way for machinery manufacturing factories to ensure quality and save metal materials. With the rapid development of China’s construction, machinery manufacturing products according to different technical requirements, widespread and widely used different surface treatment methods. Although the surface treatment of many advantages, but many influencing factors, so check the more stringent requirements. More than a decade since the liberation of China’s instrumentation industry has been great development, but still can not meet the students