Hardware die-casting is now widely used in many industries and fields, such as electronic products, automobiles, daily necessities, etc., but there are often some defects and solutions in hardware die-casting.

1. Impurities

The impurity problem of metal die castings is mainly the composite grains containing aluminum, silicon and a large amount of iron, manganese, chromium at a certain temperature, as well as some oxides. This problem can be solved by strictly controlling the composition of aluminum ingots, regularly cleaning the furnace bed and regularly removing slag from the smelting furnace.

2. Porosity

Porosity refers to holes with different sizes inside or on the surface of the die casting, which will lead to insufficient hardness of the die casting and affect the surface appearance. The pores can be treated with appropriate refining agent, the process can be adjusted, the low speed can be lowered appropriately, and whether the spraying of threshing agent is too much to deal with pores can be confirmed.

3. Crack problem

The crack refers to that the metal die casting matrix is damaged, resulting in long and thin gaps, lines or other lines, which tend to extend under the action of external forces. It can be solved by correctly controlling the alloy composition, increasing the cooling water channel, changing the structure of the metal die casting, and changing or increasing the ejection position.