Research and application of upsetting instructions during cold forming;

In the absence of systematic upsetting instructions, we would waste quite a few materials as well as a great deal of time for model experimenting.

Methods and FE Simulation of Improving Quality of Upsetting;

Compare and Analyse of Unit Deforming Force and Boundary Conditions in Model Element of Cylinder Upsetting;

Study on the law of temperature influence on brass upsetting microforming;

Engineering application of the upsetting straight thread bar’s connection technique;

Effect of annealing temperature on microstructure and transverse ductility of upset pure Mo bars

The deformation extent of metal decreases from top to bottom along longitude direction during upset and changes into cylinder,accumulating deformation exists during processing,the shape phenomenon is not observed and the ove.

With uncertain measurement of rough rules set, relative attribute reduction is obtained by applying GA, and then rough rules set is deduced under the threshold values.