1. Rough casting:

Make drawings according tothe technical requirements-Making mold as per the drawings-Preparematerial-Modelling-Filling sand-drying-casting-Surface cleaning -Casting partstesting.

2. Heat treating and agingtreatment, to reduce the internal stress of castings and to prevent it from deformafter machining.

3. Rough machining:

VisualInspection-Marking-Machining -Final inspection and test.

4. Precision finishing:

Leveling -Scraping-Inspection and testing.

5. Final finish:

Painting,-packing -deliver towarehouse.

The accuracy of the Cast IronSurface Plate refers to the deviation from flatness of the working surface andit shall be classified as Grade 0,1,2,3.