Optimal Design of Gating System for Sand Mold Casting Based on Structural Characteristics of Inclined Plane and Spiral Face

Author of the article:YANG Wuhong, DING Xu, SHEN Gang, FANG Jinxiang, TIAN Long, TAN Yuhan

Author's Workplace：1.College of Mechanical Engineering, Guizhou University, Guiyang 550025, China; 2.China Aviation Guizhou Honglin Aviation Power Control Technology Company, Guiyang 550009, China

Key Words： bevel/spiral structure; sand casting; gating system; process optimization

Abstract：When the casting has inclined or spiral surface structure characteristics, its own structural characteristics to set up a similar snake or goose neck gating system can be set up, snake or goose neck gating system can increase the flow resistance, reduce the flow rate, reduce and prevent the impact of molten metal, splash and oxidation. Several typical casting system setup schemes with inclined or helical structure were analyzed and compared. The results show that by use of molten metal in the slope and the characteristics of the helical surface smooth flow, it is set up in the slope or helical surface of the casting gating system, it can make the molten metal filling both are characterized by their smooth bottom note type gating system of filling, metal oxide light, small impact on type (core), and advantageous to the exhaust, the advantage of fast filling and strong ability of slag, The disadvantages of complex shape and large metal consumption of bottom gating system are improved.