The recent research on stability of gas bearing-rotor systems still mostly adopts the same method as in oil-lubricated bearing-rotor systems. The dynamic coeffi
58SiMn steel can be used as a kind of material for projectile-like barrel parts. During producing barrel parts, the microstructure of the barrel parts will be c
Hot dip aluminizing is one of the most effective methods of surface protection for steels and is gradually gaining popularity. Although the pulling speed is one