The manufacturing process of Dongguan precision castings
- 2019-11-05-

Dongguan Precision CastingThe grinding method can be used to remove defects on the product during the manufacturing process. After grinding, the size of the casting must effectively meet the tolerance requirements of the casting size. Generally, the deformed casting can be corrected by mechanical methods.

Stainless steel castings can be directly repaired by welding repair methods during use. When the product is repaired by its tungsten argon arc welding, its weld repair area and maximum weld repair depth need to comply with its regulations. The product weld repair The area refers to the area after expansion. Stainless steel precision castings can not be welded more than three times at the same place. The distance between the castings on the edge of the weld zone, which includes the weld zone on the opposite side, must not be less than the sum of the diameters of the two adjacent weld zones. Castings need to be heat treated in the original state after welding repairs.

Precision cast steelAfter the heat treatment of the casting, the mechanical properties of the casting need to be effectively inspected. The area of ​​the argon arc welding area in the casting must not be less than 2cm2. The distance between the welding area of ​​the equipment is not effective 100mm. It can be used without heat treatment, but it is on a stainless steel casting. There must be no more than 5 locations.

Stainless steel precision castings must not have cracks and incomplete penetration in the welding area. Castings are allowed to have pores or inclusions with a maximum diameter of not more than 2 mm and not more than 1/3 of the wall thickness in any welding area. Three, the margin of the product is not effective 10 mm.

Stainless steel castings work in corrosive media and atmospheres. The product is not allowed to use welding flux during welding. It is allowed to require tightness of stainless steel castings.Lost wax castingCarry out infiltration treatment.