THE EFFECT OF DIE MATERIALS AND LUBRICATION ON PUNCH STRETCHING AND DRAWING FORCES OF COLD-ROLLED AND ZINC-COATED STEELS
Recent trends in the automotive industry have resulted in an increased use of zinc coated steels. One of the concerns arising from this change is the effect of frictional differences of these coatings on the stamping process. This is particularly true for prototype or soft tool programs which are frequently used to validate both product and tool design. These concerns were addressed by evaluating both punch stretchability and drawing forces using limiting dome height and drawbead simulation tests. A variety of conditions were investigated including test speed, tool material, lubricant, strain state, and coating type. The results of this investigation show that significant interactions occur between zinc coatings, tool materials and lubricants. Speed was significant only for drawing forces.
- Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
- Presented at the SAE International Congress and Exposition Detroit, Michigan, February 25-March 1, 1985.
Warrendale, PA United States 15096
- Brazier, W G
- Thompson, R W
- Publication Date: 1984
- Features: References; Tables;
- Pagination: 13 p.
- TRT Terms: Automobile industry; Cold forming; Lubrication; Steel; Steel sheets
- Old TRIS Terms: Cold-rolled steel; Die materials; Drawing forces; Punch stretching; Stamping; Zinc coated steels
- Subject Areas: Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00399071
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: SAE 850274, HS-038 592
- Files: HSL, USDOT
- Created Date: Aug 31 1985 12:00AM