The Effect of Process and Model Parameters in Temperature Prediction for Hot Stamping of Boron Steel. (27th November 2013)

• Record Type: Journal Article
• Authors: Sun, Chaoyang; Bai, Qian; Lin, Jianguo; Matsumoto, Takeki; Dean, Trevor A.
• Other Names: Ko Dae-Cheol Academic Editor.
• Is Part Of: Advances in mechanical engineering. Volume 2013(2013)
• Publication Date: 2013-11-27
• Subjects: Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1155/2013/829379
• Languages: English
• ISSNs: 1687-8132

Abstract

Abstract : Finite element models of the hot stamping and cold die quenching process for boron steel sheet were developed using either rigid or elastic tools. The effect of tool elasticity and process parameters on workpiece temperature was investigated. Heat transfer coefficient between blank and tools was modelled as a function of gap and contact pressure. Temperature distribution and thermal history in the blank were predicted, and thickness distribution of the blank was obtained. Tests were carried out and the test results are used for the validation of numerical predictions. The effect of holding load and the size of cooling ducts on temperature distribution during the forming and the cool die quenching process was also studied by using two models. The results show that higher accuracy predictions of blank thickness and temperature distribution during deformation were obtained using the elastic tool model. However, temperature results obtained using the rigid tool model were close to those using the elastic tool model for a range of holding load.