Process parameters influence on friction coefficient in sheet forming operations

被引:17
作者
Ceretti, E. [1 ]
Fiorentino, A. [1 ]
Giardini, C. [2 ]
机构
[1] Univ Brescia, Dept Mech & Ind Engn, I-25123 Brescia, Italy
[2] Univ Bergamo, Dept Design & Technol, I-20044 Dalmine, BG, Italy
关键词
sheet forming; friction; contact problems; temperature; pressure; velocity;
D O I
10.1007/s12289-008-0161-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In conventional sheet forming processes, such as stamping or drawing, significant contact phenomena take place between workpiece and die surfaces. Especially, relative motion and normal loads generate friction which influences some aspects of processes such as material flow, tools wear and life and total force needed to complete the process. In the current paper an experimental test campaign has been carried out using a large scale pin-on-disk device designed and realized by the Authors to investigate the influence of pressure, sliding velocity and temperature. The purpose is to test the developed device and to find which and how these parameters mostly affect friction. The pin-on-disk test consists of two specimens, a pin and a plate representing respectively die and workpiece, which are compressed by means of a known force and then moved one over the other. Compression and friction forces are sampled during the tests and the friction coefficient is estimated as the ratio of these two forces. The tested materials are H13 die steel on FeP04 and AZ31 sheets.
引用
收藏
页码:1219 / 1222
页数:4
相关论文
共 9 条
[1]  
Ceretti E., 2007, P 8 AITEM C, P115
[2]  
Ceretti E., 2005, P 7 AITEM C, P117
[3]   Formability of stamping magnesium-alloy AZ31 sheets [J].
Chen, FK ;
Huang, TB .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2003, 142 (03) :643-647
[4]   Determination of flow stress and interface friction at elevated temperatures by inverse analysis technique [J].
Cho, HJ ;
Altan, T .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 170 (1-2) :64-70
[5]  
Klocke F., 2004, 2 INT C TRIB MAN P, P395
[6]   Inverse computational method for constitutive parameters obtained from torsion, plane-strain and axisymmetric compression tests [J].
Lam, YC ;
Khoddam, S ;
Thomson, PF .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1998, 83 (1-3) :62-71
[7]   On the measurement of friction coefficient utilizing the ring compression test [J].
Sofuoglu, H ;
Rasty, J .
TRIBOLOGY INTERNATIONAL, 1999, 32 (06) :327-335
[8]   Effect of additives on friction during plane strain compression of aluminium strip [J].
Sutcliffe, MPF ;
Combarieu, R ;
Montmitonnet, P .
WEAR, 2004, 257 (9-10) :1071-1080
[9]   Evaluation of frictional characteristics for a pin-on-disk apparatus with different dynamic parameters [J].
Yoon, ES ;
Kong, HS ;
Kwon, OK ;
Oh, JE .
WEAR, 1997, 203 :341-349