How to Deal with Iron Casting Surface Defects

1. Whenever it is necessary to use the method of welding repair to repair the defects of steel castings, it is necessary to review the defects and the process regulations of welding repair.

2. When the important steel castings are cut or carbon arc gouging to remove defects, the necessary preheating can be carried out depending on the chemical composition of the casting, the size and nature of the defects.

3. The defects of steel castings may be found when inspecting the appearance, and may also be found after heat treatment or machining.

4. When the defects of the steel castings are removed, the steel casting processing manufacturers should pay attention to the non-destructive testing of the castings, and confirm that the defects have been completely removed before the work can be ended. Shallow grooves and pits resulting from the removal of defects can be ground to a smooth, arc-like over-surface without weakening the strength of the casting.