periphery shearing with single mandrel,was studied kinematically to reveal the mechanism of shearing deformation in metal.

Modifications of Mandrel Cooling System and Outlet Table of Assel Pipe Mill;

Discussion on Optimizing Deformation Process to Enhance Mandrel Utilization Factor;

3D finite element analysis of effect of mandrel on continuous seamless tube rolling process;

Through tests of ACCC under different high temperature conditions,it is found that under high temperature,the surface of carbon fiber composite core of strain jumper section will appear something like "bamboo knots",which requires special attention in design.

The effect of pressing procedure on mechanical property was investigated with different core,stress and production procedure.

Cause study and countermeasures for core rod brittle fracture of suspension composite insulators on 220kV Ping-He line;

By analyzing the damage of the core rod and the sheath,the causations of the fault are analyzed.

Production practice of applying DRI in steelmaking for retained mandrel steel;

Discussion on the design method of diameters of series of mandrels of retained mandrel mill;

The quality of seamless tube can be improved greatly by using retained mandrel mill with on line inspection This paper summarizes the practice of retained mandrel mill at TPCO (Tianjin Pipe Corp ), and a detailed analysis of technical difficulties and major product defects were given with proposed the precaution measure

After quenching and tempering, material H13 steel core bar was broken during alignment There are naphthalene fractures on macroscopical fractures surface.