Casting Process of Super-long High Manganese Steel Frog According to EN Standard
VRH(Vacuum Replace Hardening)process is a production technology combining traditional sand casting with vacuum treatment,which has obvious advantages in product quality,production cost and environmental protection.This paper studies the casting process of railway super-long high manganese steel frog produced by VRH combined molding technology,which greatly expands the production capacity of existing equipment.The key of combined molding technology is to design the special structure of relevant process equipment so that it can meet the requirements of accurate positioning and jointing of sand molds,thus obtaining qualified castings.The casting process of frog is specifically designed according to the quality requirements of EN standard,and the numerical simulation technology is applied to optimize the process.The product inspection results indicate that the production process design is reasonable,and the product quality meets the requirements of EN 15689 standard.This process technology has good value for widespread application.
EN standardrailway swithsuper-long frogVRH combined moldingcasting process
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