The structure and size of divergent hollows, divergent bridges, welding room, die core, bearing length, die hole, as well as clearancegroove was designed according to the profile's characteristic.
合理的模具结构是实现任何一种挤压工艺过程的基础。因为它是使金属产生挤压变形和传递挤压力的关键部位；
2
Spiral-Groove gas seals work by maintaining a narrow clearance between the rotating and stationary rings. The finited element method is used to solve Renolds equation of the gas.