Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : March 17, 2018 - March 18, 2018
One of the main reasons for lowering the life span of die casting molds is the accumulation of tensile residual stress due to repeated heating and cooling processes by molten metal during molding. The tensile stress is a factor that induces cracks on the surface of the mold, therefore it is required to remove and reduce it for extend the life of the mold. In this study, investigated aim is the relationship between the residual strain generated for a die, the amplitude and frequency at the time of oscillation using the oscillation method. Moreover, the difference by the die material in order to evaluate them analytically and experimentally. As a result, the influence on the residual strain due to the difference in the metal material could not confirmed accumulation in equipment made using the deflection motor. Furthermore, each difference and accumulations of compressive strain in specimens after the oscillated examination due to the oscillation frequency in the or near resonance frequency observed, when the compressive strain amplitude applied them.
