Central Heat-insulation Hole Structure for Wheel Water-cooling Mold

Abstract

A central heat-insulation hole structure for an aluminum wheel low-pressure water-cooling casting mold. The structure includes a top mold and a central heat-insulation hole. A split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold. Besides, a circle of uniformly distributed heat-insulation holes are thrilled in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces. The diameter of each heat-insulation hole is 8 mm, the size of a wheel flange defines the number of the heat-insulation holes and the diameter of circumference of the heat-insulation holes distributed in the integrated top mold, and in order to ensure the service life and water cooling and heat insulation effects of the mold, the depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.

1 . A central heat-insulation hole structure for an aluminum wheel low-pressure water-cooling casting mold, comprising;
 atop mold and a central heat-insulation hole;   wherein a split unit structure including a top mold and central flange loose pieces is changed into a non-split integrated top mold, a circle of uniformly distributed heat-insulation holes are formed in a circumferential direction of the position of a mold split unit parting surface of the original top mold and the central flange loose pieces, the diameter of each heat-insulation hole is 8 mm, and depth of each heat-insulation hole from the surface of a cavity is more than 20 mm.   
     
     
         2 . The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to  claim 1 , wherein for a wheel of 16 inches, the diameter of a flange is 140 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 180 mm, the number of the uniformly distributed heat-insulation holes is 70, and the depth of each heat insulation hole from the surface of the cavity is 20 mm. 
     
     
         3 . The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to  claim 1 , wherein for a wheel of 17 inches, the diameter of a flange is 165 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 210 mm, the number of the uniformly distributed heat-insulation holes is 80, and the depth of each heat-insulation hole from the surface of the cavity is 22 mm. 
     
     
         4 . The central heat-insulation hole structure for the aluminum wheel low-pressure water-cooling casting mold according to  claim 1 , wherein for a wheel of 18 inches, the diameter of a flange is 180 mm, the diameter of the circumference of the heat-insulation holes distributed in the top mold is 220 mm, the number of the uniformly distributed heat-insulation holes is 90, and the depth of each heat-insulation hole from the surface of the cavity is 24 mm.