弹簧零件淬火后,一般采用硝盐回火。为了使硝盐回火工序操作简化,我们在箱式电炉中附加一个铁架(见图),把淬火后清洗干净的工件整齐摆放在铁盘中,当炉温升到回火温度后再把铁盘放在铁架上。炉温采用XWC-101自动平衡记录仪控制,具体工艺见下表。处理后工件5～10％进行硬度、弹性和金相组织检查。此法简单易行,工艺稳定,工件受热均匀,保证了质 After quenching spring parts, the general use of salt nitrate backfire. In order to simplify the operation of the nitration salt tempering process, we attach an iron frame (see photo) to the box type electric furnace. The cleaned workpieces after quenching are neatly arranged in the iron plate. When the temperature of the furnace rises to the tempering temperature Put the iron plate on the iron frame. Temperature using XWC-101 automatic balance recorder control, the specific process in the table below. After processing the workpiece 5 ~ 10% hardness, elasticity and microstructure examination. This method is simple, stable process, workpiece heating evenly, to ensure the quality