Design of cold extrusion die for axle sleeve with internal saw tooth;

Structure design of work roll driven spindle sleeve of cold rolling sheet and strip mill;

This article, based on analysing the cause of short service life of the chain link sleeve for the 90m sinter machine in Jinan Iron & Steel Group Corp, puts forward the technologic plan for the sleeve parts from complete quenching to high frequency quenching.

The sleeve,which is produced by extruding and is made from ZA12 Zn-Al alloy,has high surface finish and no crack on its surface.

The Effect of Cr Content on Mechanical Property and Microstructure of 2Cr13 Shaft Sleeve;

To ensure the working accuracy and quality of the shaft sleeve of water pump and through the analysis of its technology, a self made design of the working tool set up is put forward which can reduce the labour strength of the operator.

The structure design, processing technology and industrial test result of shaft sleeve and bearing made with ultra-high molecular weight polyethylene(UHMWPE) instead of copper and so on were introduced.

The spring back is an inevitable question in the bush forming process, which has great influence on the forming quality of bushes.

In view of the present situation in wrapping forming process, such as the backwards of the processing technology, the low precision of the wrapping bushes, our work focused on the analysis of the influence factors of the forming precision of wrapping bimetal bushes.