A mold for wheel casting

Abstract

The invention provides a mold for low-pressure casting of wheels, the mold includes an upper mold (201), a side mold (202) and a lower mold (203), and it is characterized in that the upper mold (201) is The surface includes a rim cooling hole (206); the rim cooling hole is a blind hole, and a water mist cooling pipe (205) is passed through it; and the water mist outlet (207) of the water mist cooling pipe (205) is located in the water The ends of the mist cooling tubes (205) and the bottom of the rim cooling holes (206). The beneficial technical effects brought by the present invention are: the structure is simple, and the uniformity of cooling is ensured under the condition of ensuring the cooling intensity, thereby ensuring the normal solidification of the rim, greatly improving the performance of the wheel rim, and also improving the production efficiency of the product.

Description

technical field [0001] The invention relates to the field of casting, in particular to a mold for wheel casting. Background technique [0002] In the manufacture of aluminum alloy wheels, low-pressure casting is a relatively mature process. In the actual production casting process, it is necessary to cool the key parts of the low pressure casting mold. The main reason for the low performance of the rim of the wheel: the rim of the wheel is thin, and it is not suitable to use strong cooling. If the strong cooling method is used, the rim is prone to defects such as insufficient pouring and cold insulation; the rim of the general low-pressure casting wheel has no effective cooling, and the solidification speed Slow, resulting in shrinkage inside the rim, coarse grains, low performance and other problems. [0003] In view of the above technical problems, in the field of wheel casting, water cooling, air cooling, etc. are generally used to cool the rim of the mold by some means...

AI Technical Summary

Problems solved by technology

[0004] In the water-cooled mold, due to the large temperature difference between the cooling working medium and the cooled mold, and the large temperature difference between the water inlet and the water outlet, resulting in a very uneven temperature distribution, this extremely uneven temperature distribution will cause It causes large differences in the casting quality inside the wheel, and causes local defects, and also causes large internal stress inside the mold, which affects the life of the mold

[0005] In the air-cooled mold, although the problem of uneven cooling is overcome, the air-cooling method itself determines that its cooling capacity is limited, and it is difficult to achieve sufficient cooling intensity.

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