The basic technological process of trial production of railway steel castings is introduced, the final technological scheme (serving the mass production of couplers) is determined, and the products produced by trial production fully pass the quality inspection.
Based on the investigation of the actual production line and the effective statistical data provided by the manufacturer, based on the analysis and preventive measures of common defects of Wet Mold clay sand steel castings, the key casting defect categories and characteristics, causes and solutions of railway steel castings trial production are analyzed and discussed, so as to provide effective reference for the next batch production, assist the manufacturer to solve the casting defect problem and ensure the normal operation of batch production.
The pre trial products of the factory mainly include 17 type coupler body and 16 type coupler tongue. While the parts have passed the inspection of various quality standards, there are still some key casting defects.