Impeller investment casting – sand casting check the pouring time according to the rising speed of liquid level

According to empirical parameters, when the wall thickness of impeller investment casting sand casting is > 40 mm, the minimum liquid level rising speed is / 008.0 ~ 01.0sm. Due to the high melting point and pouring temperature of stainless steel, the tendency of sand inclusion increases when the impeller investment casting sand casting mold is baked, so it is suitable for rapid pouring. Therefore, the minimum liquid level rising speed is 0.01 M / s.

When the total weight of impeller investment casting sand casting and pouring riser is 288kg, the pouring time of impeller investment casting sand casting is about 12 ~ 10ss. The actual rising speed of liquid level is:

Therefore, the pouring time of impeller investment casting sand casting is determined as 12 ~ 10ss, which can ensure that there is no sand inclusion defect.

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