Analysis of Common Casting Defects and Process Countermeasures

Qi-Hua Liu （ Dalian Rubber and Plstics Machinery Co., Ltd., Dalian, Liaoning, 116318, China ）

Abstract

In the casting production process, casting quality is of critical importance. This paper investigates common casting defects, including porosity-related defects, surface and internal inclusions, crack-related defects, and shape and dimensional defects. The causes of these defects are analyzed from multiple perspectives, such as materials, process design, operating equipment, and environmental and storage conditions. Corresponding process countermeasures are proposed for different types of defects, including optimization of the gating system, improvement of sand mold and sand core quality, structural optimization, and control of cooling rates. This study provides effective guidance for improving casting quality, reducing defect occurrence, lowering production costs, and enhancing production efficiency.

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