Transcription of SELECTION OF DIE MATERIALS AND SURFACE ... - Forging
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SELECTION OF DIE MATERIALS AND SURFACE ... - Forging
1 SELECTION OF DIE MATERIALS AND SURFACE TREATMENTS FOR INCREASING DIE LIFE IN HOT AND WARM Forging Mayur Deshpande, Research Associate and Adam Groseclose, Graduate Research Associate and Dr. Taylan Altan, Professor and Director, ERC for Net Shape Manufacturing, The Ohio State University, 339 Baker Systems, 1971 Neil Ave, Columbus OH 43201 USA ABSTRACT In warm and hot Forging , the dies are subjected to high contact pressures and temperatures. The SELECTION of the die material, hardness and coating is critical for increasing die life. Recent studies indicate that ceramic dies and various SURFACE treatment techniques represent, in certain applications, cost effective techniques for improving die life.
These thermally induced stresses initiate cracks on the dies due to heat checking which can propagate and cause die fracture. Thermal stresses are proportional to the thermal expansion coefficient and elastic modulus and are inversely proportional to the …
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