Year: 2009
Type: article
Abstract: In piercing, a smooth shearing surface can be obtained by reducing the clearance between the punch and the die. However, continuous piercing in a small clearance is difficult during mass production, since adhesion may easily occur. A Press Working punch (PW punch) is a punch for piercing a steel plate developed on the basis of cold backward extrusion technology. However, the dimensions of the PW punch were not evaluated accurately. In this study, we evaluated the adhesion resistance of the PW punch when used for the fine piercing of a steel plate. Experiments on continuous piercing using a PW punch with a 10 mm diameter and 0.5 % clearance are performed on a hot-rolled steel plate having a thickness of 4.5 mm. Experiments using a conventional right angle punch are also performed for comparison. A mirrorlike shearing surface was obtained using a ceramic-coated PW punch without causing adhesion in 600 continuous piercings. As a result, the PW punch was found to be highly advantageous for the piercing of steel plates.
DOI: 10.9773/sosei.50.119
Institutions: Tokyo Institute of Technology, AIDA Engineering, Ltd. (Japan)
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2314219720