Design and Process Research of Reverse Casting Device for Bimetallic Inner Bushing Base
Author of the article:SHI Yongliang;CHEN Cunguang;QI Cuifen;LI Shuang
Author's Workplace：Department of Materials Engineering, Hebei College of Industry and Technology, Shijiazhuang 050091, China;Advanced Material & Technology Institute, University of Science and Technology Beijing, Beijing 100083, China
Key Words：casting device double spiral extruder inner bushing bimetal TRIZ theory
Abstract：
The method of direct casting on the inner wall of the steel tube can be used to prepare the wear-resisting metal layer. However, in the process of casting, the high temperature liquid metal corroded the steel tube quickly, resulting in corrosion and perforation of the steel tube, which made the process difficult to control. In addition, there were a large number of pores in the prepared metal layer, which cannot meet the requirements of use. In order to solve the problem of corrosion perforation and residual porosity, TRIZ theory was introduced, and the functional model of casting device was established by causal chain analysis method. The results show that the technical conflict law is designed and developed a rapid reverse casting device, reduce the liquid metal corrosion time, eliminate the residual porosity in the metal layer, and process design in order to realize the continuous production quickly, meet the requirements with the lining wear-resistant coating is prepared by the set of twin screw extruder and double metal liner.
