Casting Technology Optimization of Nodular Iron Grouting Sleeve
The structure and technical requirements of nodular iron grouting sleeve casting were introduced.In order to solve the problems that the DISA vertically parting no box molding line producing nodular iron grouting sleeve having shrinkage and flow mark color difference,the present nodular iron grouting sleeve technology was numeral analyzed by using MAGMA numeral simulation software,obtained reason causing casting defect,and by optimizing ingates dimensions and adding insulating block,accelerating mold filling velocity,elevate pouring temperature.The casting shrinkage and tube body flow mark color difference were effectively solved.At same time,by strictly controlling the key quality positions,the metallurgical structure and mechanical properties were also meeting technical requirements.
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