A,, lost wax casting, casting gate riser after cutting there shall not be the root of the height is greater than 2 mm;Of the surface of the more important machining, if found that all kinds of skin defects from appearance should be timely reflected in the section and tracking of the product, once found after processing there are many defects such as porosity, slag inclusion, shrinkage of similar products will be immediately sealed technical personnel may not be the factory and urge section in process improvement.Second, lost wax casting daily inspection must have the corresponding inspection report, should be used for the tested lost wax casting casting pencil in product surface indicate the defect parts and repair methods, qualified, waste or other inspection mark.Repair after the completion of the product must be re-examined and urging workers to wear to the product after inspection "qualified" on the outside of all kinds of tag.