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Due to high metal injection velocities typical of die casting process, oxide film on die surface breaks exposing virgin steel surface to liquid aluminum at 680 o C. This paper describes in detail the fundamental tribochemical basis for the soldering and mass loss phenomena related to this steel-cast metal interaction. Cylindrical plain H13 coupons are dipped in hot liquid aluminum, kept for...
Thermal fatigue cracking is a major mode of failure of hot working tool steel dies in die-casting and forging applications. This results in huge loss owing to high cost of dies, downtime and die repair and replacement. The cracking initiates due to the large thermal shock experienced by the die surface when it is rapidly heated to 700°C and then quenched to 150°C by the lubricant spray. This thermal...
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