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Control of shrinkage cavity and porosity defects of steel castings

Different steel casting production processes determine different production processes, but they can be basically divided into process design, model making, molding and core making, lower core box, smelting and pouring, sand falling, gas cutting and gouging, heat treatment, grinding and cleaning, inspection and other processes. The shrinkage cavity and...

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Analysis of casting defects of steel castings

The steel castings were trial produced in two batches, and the first time was qualified, and the second time there was shrinkage cavity and porosity defect. After investigating the five aspects of personnel, machines, materials, methods and links, since there are no abnormal changes, it is inferred that the...

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Eliminating shrinkage cavity and porosity defects of steel castings

The traditional steel casting process design is analyzed through examples, and the shortcomings of the traditional process design are analyzed through the actual defects. Then the improvement measures are put forward for the examples, and the application verification is carried out. The improved steel casting process design method is...

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Casting defects of multi branch cast steel joints

Distribution law of casting defects of multi branch cast steel joints: (1) Cracks mainly appear in the R zone of cast steel joints. The reason is that the thickness of the branch pipe is only half of that of the main pipe, resulting in different cooling conditions between the...

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