Cause Analysis of Sand Hole in Casting
Release time：
2023-02-21
The sand particles in the mold cavity can not float to the riser smoothly due to the discontinuous pouring or too slow pouring speed, and stay in the place with low temperature.
Cause analysis of sand hole
First, the sand in the cavity is not clear.
Second, sand particles are intruded from the opening of the runner or riser before pouring.
Third, the strength of sand mold is not enough, and it falls off due to external force.
Fourth, the sand particles in the mold cavity can not float to the riser smoothly due to discontinuous pouring or too slow pouring speed, and stay in the place with low temperature.
Fifth, the temperature is too high and the pouring speed is too fast to wash the runner into sand particles.
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