Punchless Drawing of Magnesium Alloy Sheet under Cold Condition and its Computation
Abstract
The punchless drawing with Maslennikov's technique was applied to the circular cup drawing of magnesium alloy AZ31B sheet under cold condition. The elastic rubber ring was used instead of the `hard' punch, where the compressed ring dragged the sheet inward the die cavity. Attainable circumferential strain of the blank was increased by this technique with repetitive drawing operation. Thickness of the rubber pad affected little the attainable strain. The shape appearance became better when a harder rubber was used. The cup forming by single drawing operation was also tested using a small die shoulder radius. The LDR of 1.250 was obtained with the straight cup wall. Further, the computation of the punchless drawing was also conducted for the single drawing operation. The computed deformation pattern was well consistent with the corresponding experimental result.
- Publication:
-
American Institute of Physics Conference Series
- Pub Date:
- January 2011
- DOI:
- 10.1063/1.3552483
- Bibcode:
- 2011AIPC.1315..431Y
- Keywords:
-
- magnesium alloys;
- elasticity;
- hardening;
- rubber;
- forming processes;
- 81.05.Bx;
- 46.25.Hf;
- 81.40.Cd;
- 81.05.Lg;
- 81.20.Hy;
- Metals semimetals and alloys;
- Thermoelasticity and electromagnetic elasticity;
- Solid solution hardening precipitation hardening and dispersion hardening;
- aging;
- Polymers and plastics;
- rubber;
- synthetic and natural fibers;
- organometallic and organic materials;
- Forming;
- molding extrusion etc.