The II kind of size effect on micro deep drawing;

To determine the optimum processing parameters relevant to micro deep drawing,uniaxial tensile tests were carried out at different temperatures and strain rates.

The development of micro forming of thin metal sheet such as micro deep drawing,incremental forming,micro blanking and micro bending are overview covered.

Study on micro deep drawing process and die design;

Warm hydro-mechanical deep drawing of 18-8 stainless steel;

Analysis of stainless steel sheet forming and preventive measures for the defects in deep-drawing;

Analysis of energy consumption in blank holding of single-action deep-drawing hydraulic press;

Blank shape optimization in deep-drawing process by sensitivity analysis;

The thesis studies the deformation,drapability and breakage in ball-shaped parts stretching,and also suggests two methods to prevent those results.

In the light of the stretching characteristics of stainless steel sheet, this paper puts forward the points that should be paid attention to in choosing die materials, making die model, and lubricating in order to guarantee product quality and die model life.

If deformation degree of blank is excessive, while stretching, inner radial tensil stress of blank load transferring field will go beyond the strength limit of sidewall material so that breakage takes place.