NIB : Green roller defect on the small end radius; caused by taper diefailure. A sharp protrusion on the small end of the roller.
由于圆锥模具缺陷造成的半成品滚子小端倒角缺陷， 滚子小端有尖锐的突出。
2
In hot impression die forging, the principal modes of diefailure are erosion, thermal fatigue, mechanical fatigue and permanent (plastic) deformation.
在热压模缎中，模具失效的主要模式是腐蚀作用、热疲劳、机械疲劳和永久性即塑性变形。
3
The fatigue break down is the main form of diefailure. To improve the use life of dies, an approach for increasing fatigue resistance of die material is reviewed.