Transactions of Materials and Heat Treatment

Title：Numerical simulation and parameter optimization for extrusion process of internal helical part

Authors： LI Jian-ping1 YUAN Bao-guo2 CHE Lu-chang3 CHEN Qiang3 4

Unit： 1.Department of Mechanical and Electrical Engineering Chong Qing College of Electronic Engineering Chongqing 401331 China 2. School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China 3. No.59 Institute of China Ordnance Industry Chongqing 400039 China 4. School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China

KeyWords： internal helical part cold extrusion forming defect numerical simulation

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2012,37(6):122-125

Abstract：

Numerical simulation was conducted for the extrusion process of an internal helical part, the effects of friction coefficient, helical angle and semicone angle on extrusion force and extrusion defect were studied,and extrusion process parameters were optimized. Results show that extrusion force is affected notably by friction coefficient, helical angle and semicone angle. Extrusion force increases linearly with friction coefficient, and nonlinearly with helical angle and semicone angle. Extrusion defect is affected notably by friction coefficient and helical angle, and less by semicone angle. Extrusion test was carried out for an internal helical part using the optimized parameters and a qualified part was obtained. Results have the actual application value, which can provide guidance for the cold extrusion of an internal helical part.

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Reference：

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