1. Casting shell cleaning
Generally speaking, Aluminum Alloy Die casting can undergo further cleaning work after cooling. After shell casting, the cooling time of the casting in sand Die Casting Part is directly related to the raw materials of the Aluminum Alloy Die-Casting and the production and processing specifications of the aluminum casting. If the cleaning work for aluminum profile casting is done earlier, it is easy to cause deformation, gaps, and other defects in the aluminum casting. Castings with very large specifications and complex production processes should have a longer cooling time. Compared to castings with smaller specifications and thinner walls, casting with simple production processes can have a shorter cooling time. 2. Cutting the pouring gate
The important methods for cutting pouring gates include oxygen cutting, sand wheel cutting, CNC sawing machine, four column hydraulic machine cutting, cutting, etc.
3. Surface cleaning of aluminum casting
After the aluminum casting is molted, there is a total residual zinc ash on the surface of the die-casting aluminum alloy equipment. The shrinkage rate of the aluminum casting, especially for castings with complex inner cavities, V-grooves, and buried holes, cannot be completely cleaned and tidy, and surface cleaning should be carried out.
4. Shot blasting for rust removal
If there are special regulations for casting, shot blasting can be carried out for rust removal. Shot blasting is used to remove rust by applying the cohesive force caused by the high-speed rotating impeller of the shot blasting fan, and throwing the iron shot towards the surface of the casting, leaving sand, weld nodules, or zinc ash on the surface of the aluminum casting. Generally speaking, the surface of casting that have undergone shot blasting and rust removal is related to the specifications of the iron shot.
5. Welding repair
Aluminum casting for automotive engines generally refer to casting that do not meet the professional standards for engineering completion acceptance or the provisions of the purchase contract, are defective but can be repaired. First, the welding repair position should be cleaned to ensure that the surface of the aluminum casting is exposed with metallic luster. The size of defects should be sequentially welded from small to large. For example, if the area occupied by welding repair is very large and the defects are in key areas of the casting, annealing treatment should be carried out after welding.
