How to protect stainless steel in the process of precision casting?

During the production and processing of stainless steel precision casting, the accumulated method can be used to eliminate the defects in the product. After the casting is polished and polished, its specifications must be reasonably in line with the dimensional tolerance of its casting specifications. Castings can be corrected by mechanical equipment.

Shandong foundry can immediately use its welding repair method to repair in the adopted link. When the product chooses its arc welding welding damage to be repaired, its total welding repair area and its deep welding repair must meet its requirements. The total area of welding repair in the product refers to the total area after expansion.

Welding repairs of stainless steel precision castings at the same place cannot exceed multiple times. The spacing of castings at the edge of the welding zone, where the welding zone on the back is involved, must not be less than the sum of the diameters of the two adjacent welding zones, as long as it is For the castings supplied by the heat treatment process, the heat treatment process must be carried out according to the original conditions after welding repair.

The physical properties of stainless steel castings after quenching and tempering treatment must be tested reasonably. The total area of the argon arc welding machine area in the castings must not be less than 2cm2, and the distance between the welding areas of machinery and equipment is uneconomical 100 mm. When used, it does not pass its heat treatment process, but one stainless steel casting must not exceed 5 places.

Precision castings must not have cracks and under-welded conditions in the welding repair area. The castings are allowed to have a larger diameter in all welding areas, not exceeding 2 mm, and not exceeding 1/1 of the wall thickness. 3 vent holes, or a mix of three, the row height of the product is not economical 12 mm. For castings that operate in corrosive substances and their atmospheres, the application of welding powder is not allowed when the product is repaired for welding damage.

The wall thickness of the inner cavity and inner rib of the casting should usually be 0.65-0.73 of the thickness of the connecting surface, otherwise, because the inner cavity (rib) freezes slowly, it is easy to cause cracks at the junction of the inner and outer walls when the casting is closed. Because the metal material type heats up quickly, the thickness of the carbon fiber product should be a little larger than that of the sand casting casting, various cast aluminum alloys, and different sizes of casting wall thickness.