Technology of wet molding clay sand for railway steel castings

The wet molding clay sand process of railway steel castings is a more traditional and difficult to control energy-saving and environmental protection process. Based on the contract terms and the research status at home and abroad, this paper will study in the following aspects:

(1) According to the surface sand and back sand, the formula of green molding clay sand is tested and optimized, the proportion and performance indexes of green molding clay sand used in the production of steel castings in Tongling branch are formulated, and the relationship between the composition of molding sand and the performance of molding sand is analyzed;

(2) According to the original process scheme, ProCAST software is used to simulate the process of 17 coupler body and 16 coupler tongue, predict the possible casting defects and optimize the process scheme, put forward the improved process scheme, and simulate and verify the improved process scheme as the process scheme of product trial production;

(3) Improve the process problems in the process of product trial production, assist the factory to determine the final process scheme as the process scheme of early batch production, conduct macro qualitative research and micro analysis on the defects of steel castings in the process of trial production and batch production, and put forward control measures and solutions to ensure the final batch production of high-quality steel castings.

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