NIB : Green roller defect on the small end radius; caused by taper die failure. 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。
The fatigue break down is the main form of die failure. To improve the use life of dies, an approach for increasing fatigue resistance of die material is reviewed.
疲劳破坏是模具失效的主要形式，为了提高模具的使用寿命，综述了提高模具材料疲劳抗力的多种途径。
The basic forms of die failure and the factors affecting die life are introduced. The reasons of die failure forms are analyzed and the measures taken to prevent or postpone the failure are given.
概述了模具失效的基本形式及影响模具寿命的因素，剖折了模具失效形式形成的原因，提出了防止或延缓模具失效的措施。
The basic forms of die failure and the factors affecting die life are introduced. The reasons of die failure forms are analyzed and the measures taken to prevent or postpone the failure are given.
概述了模具失效的基本形式及影响模具寿命的因素，剖折了模具失效形式形成的原因，提出了防止或延缓模具失效的措施。
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