Failure Analysis of the Guide Pillar in a Progressive Die

Xiao Feng Wu; Na Xu; Fei Peng Lou; Yong De Li; Jun Bo Shi

doi:10.4028/www.scientific.net/AMR.197-198.1416

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Short Crack Propagation Law and Fatigue Life Prediction Method for Structural Alloy Steel
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Study on the Difference of the Propagation Characteristics between Open Flaws and close Flaws in Brittle Materials under Compressive Loading
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Research on the Key Parameter of the Core Part on the Equipment for Peeling Off the Gingko’s Shell
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Failure Analysis of the Guide Pillar in a Progressive Die
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Experimental Investigation of Dilatancy-Bulking Behavior of Weak Sandstone
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Study on Stress-Strain Behaviour of Mud Stone from Triaxial Test
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Experimental Analysis on Acoustic Emission of The Fracture Marble Under High Tempreture
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Investigation into Shear Experiment on Interface between Asphalt Pavement and Concrete Bridge Deck
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 197-198Failure Analysis of the Guide Pillar in a...

Failure Analysis of the Guide Pillar in a Progressive Die

Abstract:

The fracture of the Cr12MoV guide pillar in a progressive die during punching was investigated by SEM observation, metallographic examination, chemical composition analysis, hardness testing. It is showed that the failure of the guide pillar was caused by fatigue. The fatigue crack initiated from the circumferential groove by repeated punching, and propagated throughout about 1/3 of fracture surface, then, instantaneous fracture eventually took place. Besides, there are some bigger eutectic carbides and inclusions in the pillar that made the material worse.