Current situation of casting technology development in China
Author: Date: 2020-6-19 13:52:03
Overall,the academic research in the field of casting and not backward in our country,a lot of research results in the international advanced level,but less into realistic productivity. Domestic high level of casting production technology is limited to a few key enterprises,the industry overall technology level backward,casting quality is low,the material,the high energy consumption,economic benefit is poor,labor conditions and pollution. Specific table now,appearance is still in manual or simple mould processing machinery; Casting the supply of raw and auxiliary materials production socialization,specialization,commercialization of gap is big,the quality of varieties far cannot satisfy the needs of the development of new technology new technology; Casting alloy material production level,quality is low; Backward production management; Process design by personal experience more,less computer technology application; Poor casting technology and equipment,etc; Manual operation ratio is high,the production process workers technical quality is low; Only a few large automobile,internal combustion engine group foundry advanced modelling core-making process,most of the foundry enterprises is still in shock pressure molding machine manual,even core with tung oil,grease and clay sand binder. Most of the investment casting foundry is given priority to with sodium silicate shell making; Low pressure casting can only produce the small and medium-sized iron or cast iron parts,cannot produce steel; Stable production with EPC technology is limited to the exhaust pipe,casing,such as casting,productivity in under 30 type/h,low level of casting dimension accuracy and surface roughness; Although built a relatively complete system of foundry industry standards,but most of the passive enterprise standards,enterprise standards much lower than that of GB (GB) and ISO (international standards),some enterprises rejection rate as high as 30%; Quality and market awareness is not strong,only a few specialized foundry enterprises through the ISO9000 certification. The research on quality management combined with the characteristics of casting enterprises is very weak.