What are the specific characteristics of die casting molds?

The automotive mold casting manufacturer's editor will introduce to you that die-casting molds are a method of casting liquid forging, a process completed on a dedicated die-casting forging machine. Its basic process is: the metal liquid is first cast at low speed or high speed and filled into the mold cavity. The mold has a movable cavity surface, and it is pressurized and forged with the cooling process of the metal liquid, which not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grain state of the forged state. The comprehensive mechanical properties of the blank have been significantly improved. Another advantage of die casting and forging technology is that, in addition to producing traditional casting materials, it can also use deformation alloys and forging alloys to produce parts with complex structures, including hard aluminum superhard aluminum alloys, forged aluminum alloys, such as LY11, LY12, 6061, 6063, LYC, LD, etc. The tensile strength of these materials is nearly twice that of ordinary cast alloys, which has a more positive significance for components such as aluminum alloy car wheels and frames that hope to be produced with higher strength and impact resistant materials.

1. The traditional die casting process mainly shapes various complex shaped parts; High production efficiency; Parts made of other materials can be embedded on die-casting parts; Not suitable for small-scale production; The types of die-casting alloys are restricted.

2. Vacuum die-casting can mainly reduce the internal pores of the die-casting and increase the density; Die castings have high hardness and small microstructure; The wall thickness of machinable materials is reduced by 25% to 50% compared to traditional methods; Can reduce pouring and exhaust systems; Can increase productivity by 10% to 20%

3. Oxygen filled die casting mainly eliminates and reduces porosity; The pressed castings can work at high temperatures of 200-300 ℃; Compared to other types of die casting, it has a simpler structure and easier operation.

4. Precision dense die casting mainly has a low filling speed; Thick inner gate; Control the solidification sequence of the parts; The injection mechanism adopts a double punch.

5. Semi solid die casting is mainly characterized by a 50% solid phase composition, which reduces the shrinkage rate of the alloy and provides good flow filling, resulting in good casting quality; The semi-solid injection cavity does not flow and can basically be filled with full wall thickness; Simple and convenient operation, convenient for organizing mechanized production; Can achieve zero demolding resistance and improve casting accuracy; Under the action of shear force, the grain size is refined and the mechanical properties are improved.

For more information about automotive mold casting, automotive molds, and cold heading machines, please follow our website for updates

http://www.jsrm.net.cn/