An Experimental Study on the Clearance Design of Fine Blanking Tool for High-Strength Steel Special Parts with Various Inner Corner Shapes

Jong Deok Kim; Young Moo Heo; Ho Keun Kang; Si Tae Won

doi:10.4028/www.scientific.net/AMR.706-708.426

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 706-708An Experimental Study on the Clearance Design of...

An Experimental Study on the Clearance Design of Fine Blanking Tool for High-Strength Steel Special Parts with Various Inner Corner Shapes

Abstract:

The clearance between the punch and die of a fine blanking tool is an important design factor that affects the sheared surface of a product. In a fine blanking process, the clearance is typically assigned a 0.5% material thickness. If the clearance is too big, a fractured surface would occur in the product while if it is too small, bulging would occur.In this study, a setting for optimum clearance was proposed for inner corner shapes by checking shear characteristics and bulging effects according to various clearances. After designing a special part with various corner shapes possessing SPFH590 (thickness: 4 mm), a high-strength steel material, a fine blanking tool was constructed and fine blanking experiments were conducted. The result could be usefully applied in fine blanking processes for high-strength steel automobile parts with corner shapes in the future.

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Periodical:

Advanced Materials Research (Volumes 706-708)

Pages:

426-430

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.706-708.426

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Online since:

June 2013

Authors:

Jong Deok Kim, Young Moo Heo, Ho Keun Kang, Si Tae Won

Keywords:

Bulging, Clearance, Fine Blanking Tool, SPFH590

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