Study on Working Hardening for the Sheet with Different Hardening Index by Fine-Blanking with Negative Clearance

W.F. Fan; Zhong Mei Zhang

doi:10.4028/www.scientific.net/MSF.697-698.365

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HomeMaterials Science ForumMaterials Science Forum Vols. 697-698Study on Working Hardening for the Sheet with...

Study on Working Hardening for the Sheet with Different Hardening Index by Fine-Blanking with Negative Clearance

Abstract:

The hardening layer of blanking boundary could enhance structure intensity and wear resistance of blanking work piece evidently. Therefore it could enhance fatigue strength and the working life of work piece greatly. This paper carried through fine-blanking with negative clearance processing experiment for the sheet with different hardening index and measured the blanking force and the punch stroke relations curves. The micro hardness of the blanking work pieces sheared surface were measured by Vickers Hardness instrument(MH-6), which obtained the relations curves of punch stroke and the micro hardness of the blanking work pieces. The level of working hardening were compared with different hardening index materials by fine-blanking with negative clearance, and the blanking work pieces working hardening were enhanced evidently by fine-blanking with negative clearance.

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Periodical:

Materials Science Forum (Volumes 697-698)

Pages:

365-370

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.697-698.365

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Online since:

September 2011

Authors:

W.F. Fan, Zhong Mei Zhang

Keywords:

Hardened Index, Microhardness, Negative Clearance, Work-Hardening

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