Papers by Author: Hui Min Zhang

Abstract: The solidification process, the formation mechanism and distribution law of microporosity of the ball milling machine head cover made by SVEDALA corporation of USA were simulated by computer. The Solidworks software was used to generate three-dimensional model of cast parts and the Hua-casting software was employed to simulate the casting process. The simulated results show that significant microporosity was found in the middle of two casting heads and at the place of gudgeon journal because of insufficient chilling degree. The processing rationality was judged through the computer-aided technology, by which some drawbacks of the traditional process were overcome and the process design quality was improved.

Abstract: The numerical solidification simulation for oceangoing freighter rudder horn steel casting has been made and the location and reasons forming casting defects have been predicted by HUAZHU CAE software. Simulating result shows that the casting perfects can be realized by means of the technological optimization and rationally assembling gating system, risers and iron chill. After magnetic particle detection and ultrasonic inspection, the properties and microstructure of the oceangoing freighter rudder horn steel casting are in accord with the standard of USA, Germany and Japan.