Marine Casting（Cylinder half）

Description

During casting production, the quality of marine castings should be controlled and inspected. First, we should formulate the process rules and technical conditions for the control and inspection of each specific product from raw materials and auxiliary materials. Each process shall be controlled and inspected in strict accordance with the process rules and technical conditions. After that, the quality of the finished castings shall be inspected. Reasonable testing methods and appropriate 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, audio, ultrasonic, eddy current, X-ray and γ X-ray and other methods to check and judge.