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Casting apparatus for eliminating cracks of thick and large belt pulley shaft hole

A pulley shaft and crack technology, which is applied in the field of gray cast iron thick and large casting devices, can solve the problems of cross-shaped cracks in the shaft hole of castings, and achieve the effects of eliminating cracks in the shaft hole, uniform temperature distribution, and uniform cooling speed

Inactive Publication Date: 2014-04-23
TIANSHUI SPARK MACHINE TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although the above-mentioned device can make castings have fewer shrinkage cavities and shrinkage phenomena, it is easy to produce cross-shaped cracks in the shaft holes of castings.

Method used

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  • Casting apparatus for eliminating cracks of thick and large belt pulley shaft hole
  • Casting apparatus for eliminating cracks of thick and large belt pulley shaft hole

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Embodiment Construction

[0013] The present embodiment will be further described below in conjunction with the accompanying drawings.

[0014] see figure 1 and figure 2 , which is a casting model of a casting device for eliminating cracks in the shaft hole of the thick and large pulley provided by the preferred embodiment of the present invention. The ingate 1 is connected with the annular runner 5, and the thick and large pulley The shaft hole 4 of the casting mold 6 is the center of the circle, and the rectangular pouring riser 2 is arranged on the outer wall of the thick pulley casting mold 6 along the outer ring thereof, and a cooling chamber is arranged on the inner bottom surface of the sand mold at the thick and large part of the pulley casting. Iron 3. At least one of the rectangular risers 2 is evenly distributed along the circumferential direction above the outer wall of the casting model, and at least one piece of the cold iron 3 is evenly arranged on the bottom surface of the middle thi...

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Abstract

The present invention provides a casting apparatus for eliminating cracks of a thick and large belt pulley shaft hole. According to the present invention, according to a casting mold, an inner gate and an annular transverse runner are connected; a rectangular pouring riser is arranged above the outer wall of a belt pulley casting mold along the belt pulley circumference outer ring by adopting the shaft hole of the belt pulley casting mold as the circle center; a proper amount of chill is arranged on the sand mold inner bottom surface of the thick and large position of the belt pulley cast; and the rectangular pouring riser is uniformly distributed along the circumference direction above the cast outer wall, the mold casting chill is uniformly arranged on the bottom surface of the middle thick position of the thick and large belt pulley casting mold, and the annular transverse runner is connected with the belt pulley casting mold through the inner gate. With the casting apparatus, the cooling rate of the thick and large position between the cast outer wall and the shaft hole is accelerated, the cracks can be eliminated, the operation process can be simplified, and the casting cost can be reduced.

Description

technical field [0001] The invention relates to a casting device for thick and large pieces of gray cast iron, in particular to a casting device for eliminating cracks in shaft holes of thick and large pulleys. technical background [0002] At present, the existing casting device of thick and large gray cast iron pulley mainly relies on the pouring system in order to avoid shrinkage cavity and shrinkage at the final solidification part of the casting due to liquid shrinkage and solidification shrinkage during the solidification process, and to eliminate casting stress. Feeding through the dark riser of the inner runner, but the dark riser of the inner runner can cause local overheating, increase the casting stress, and have a negative effect on the uniform temperature distribution of the casting as a whole. Therefore, although the above-mentioned device can make castings have fewer shrinkage cavities and shrinkage phenomena, it is easy to produce cross-shaped cracks in the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/28B22C9/08B22D27/04
Inventor 刘智峰彭治平
Owner TIANSHUI SPARK MACHINE TOOL
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