Research on the application of grid structure exhaust groove in metal mold casting
In this paper,the influence of the grid structure exhaust groove on the stomatal defects of metal mold casting is studied,and the surface stomatology defects and metallographic structure of cast-ings without venting groove and castings with venting groove are analyzed.The results show that adding a grid structure exhaust groove to the metal mold can make the gas in the mold cavity be discharged in time and prevent casting defects such as invasive porosity in the casting.When the molten metal fills a mold with a grid structure exhaust groove,the molten metal cannot fill a large number of fine exhaust channels due to the effect of the surface tension of the liquid,which is the main reason why the gas can be discharged normally.
Metal mold castingStomaAluminum alloyMetallographic organization
万方数据
维普
