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Sand inclusion defect of steel castings

The sand inclusion casting defects of steel castings are relatively serious, because the proportion of product scrapping caused by sand inclusion casting defects has reached 4%, and the welding repair rate of sand inclusion casting defects is basically 100%. What is the reason why the sand inclusion casting defects...

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Casting sand inclusion defect

Casting sand inclusion defects are directly related to production process, mold, sand mixing, molding, core making, lower core box, pouring and other processes, among which it is closely related to process design, lower core box and pouring. The specific reasons are as follows: ① The quality of model design...

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Sand inclusion defect in sand casting

In sand casting production, it is often found that castings with sand inclusion, either inside or on the surface, are generally not treated or polished or repaired by welding, which will lead to scrapping in serious cases. Sand inclusion mainly includes the following forms: ① The sand mold surface...

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Cracks and sand inclusion defects in steel castings

The causes of cracks and sand inclusion defects in motor shell steel castings are studied from the perspective of process optimization. The research on process optimization mainly includes four aspects. ① Optimization of molding sand process in sand casting. The addition amount of alkaline phenolic resin is 1.5% ~...

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MNS inclusion defects in steel castings

The material studied is low alloy steel, and its main alloy elements are common elements such as C, Si, Mn, P and s. The samples used in the experiment and observation in this paper are all on-site samples from a steel casting enterprise. Some products of the enterprise found...

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