Description
In the process of casting production, the quality of marine castings shall be controlled and inspected. First, the process rules and technical conditions for the control and inspection of each specific product from raw materials and auxiliary materials should be formulated. Each process shall be controlled and inspected in strict accordance with process rules and technical conditions. After that, the quality of finished castings shall be checked. Reasonable testing methods and corresponding testing personnel shall be equipped. Generally, for the appearance quality of castings, the surface roughness of castings can be judged by comparing sample blocks; Tiny cracks on the surface can be inspected by coloring method and magnetic particle method. For the internal quality of castings, there are audio, ultrasonic, eddy current, X-ray and γ X-ray and other methods.
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