对铸件的力学性能提供合格保障的质保技术

Quality Assurance Technique for Ensuring Mechanical Properties of Casts

论述一种对铸件的力学性能提供合格保障的质保技术,其实现方法包括:通过快速化学分析,分析铁水、钢水、铝水、或铜水的成分。并根据指令炉前的配料和熔化程序进行不断调整。通过快速金相分析,将铸件的金相组织数据指令发给浇铸程序,以免不合格的铁水、钢水、铝水或铜水浇铸成铸件。该质保技术同时保证化学成份和金相组织数据合格,从而保证铸件的力学性能和最终质量。实现了铸件生产的全程超前、预警和指挥,从而提供了一种全面保障了铁水、钢水、铝水、或铜水浇成铸件的内在质量。四平联合收割机总厂铸钢车间、铸钢车间对ZG45、ZGMn13、ZG40Gr及HT200、HT250、QT60-2等钢铁品种进行质保实践,对E514及东风5联合收割机28种铸件,检测单件力学性能合格率达98%以上。

In this paper,a quality assurance technique for ensuring mechanical properties of casts is discussed.This technique is performed by many steps：rapid chemical analysis to get the components of melted iron,steel,aluminum or copper and mixing and melting programs adjustment according to the results;rapid metallographic analysis to get information of the casts then send to the moulding programs to avoid the disqualified iron melt,aluminum melt,aluminum melt or copper melt moulding into casts.This quality assurance technique ensures the wanted chemical components and metallographic information,so the mechanical proerties and the quality of the casts are well assured.This technique realized the presentiment and pre-direction on the whole progress in casts,producing,and ensuring the quality of casts. This technique has been used on the practices of making irons and steels such as ZG45,ZGMn 13,ZG40Cr,HT20-40 and QT60-2 and also has been practiced on producing 28 species casts of E514 and Dongfeng5 conbine harvester in steel casting plant and iron casting plant,Siping combine Harvester Corporation.The passing percent of mechanical property of single cast has reached 98%after using this technique.