This paper,based on the main and failure types of cold blunt mold,such as cotlapsing,worn-away and splitting,studies the durability of fatigue failure of punches.

This paper presents a new kind of tap durability counting empiric formula which is set up by the author using the mathematical regressive analysis method.

This paper expounds the special prop erties of stainless steel and,from a spects of the s election and determi-nation of the material,durability a nd cutting data,etc .

A new method of AC magnetization treatment to improve endurance of high-speed steel tool was put out.

The jam of grinding wheels is a key factor that affects the endurance of grinding wheel.

The relationship between endurance of hard alloy cutter edge and the e dge angle is investigated through simulating the process of cutting polyester st aple with a self-made miniature fiber cutting equipment.

The relationships between cutting speed, feed rate, cutting depth and cutting tool life and surface roughness are researched and the wear mechanism is analyzed.

S tools treated by magnetic field when cutting45 steel and revealed the main reasons which may influence the cutting tool life treated by magnetic field.

Study on durability of Pd/C catalyst for catalytic hydrogenation of m mononitrophenyl-β-hydroxyethyl sulfone;

Durability Evaluation of Glass Fiber Reinforced Vinyl Ester Resin Composites;

Through analysis of spinning practice regarding durability of the cot with the same hardness from both at home and abroad as well as spinning quality,conclusion is made that the domestic cot LXC-60 can be a substitution of the same kind from abroad.