Gagg, C. R.
Premature failure of thread rolling dies: material selection, hardness criteria and case studies.
Engineering Failure Analysis, 8(1) pp. 87–105.
Whilst responding to continued market demand for increased hardness of large section (D2 tool steel) thread rolling dies, a die manufacturer encountered unexpected production difficulties along with a spate of premature ‘in-service’ failures. This report presents criteria for material selection and hardness of thread rolling dies, along with three case studies of specific failures that emphasise why excessive hardness in this type of die material was inadvisable.
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