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　　Seven essential elements that high-end die-casting molds must possess

　　High quality die-casting molds provide assistance for high-quality die-casting products. In the process of die-casting production, die-casting molds are one of the important tools that help to efficiently produce die-casting parts. To produce a high-quality die-casting product, in addition to having advanced die-casting technology equipment and professional die-casting technical talents, it is also necessary to have a set of high-end die-casting molds. However, high-end die-casting molds must have the following seven elements:

　　1. The appearance and dimensions of the mold are qualified

　　There are no defects or weld marks on the surface of the mold, and the surface roughness is less than 0.3mm. There are no air bubbles, material patterns, or bubbles. The dimensional accuracy should meet the requirements of formal and valid mold drawings (or 3D files), and the surface misalignment should be less than 0.1mm

　　2. The appearance of the mold is clear

　　The nameplate content is complete, the characters are clear, and the arrangement is neat. There should be no pits, rust, excess lifting rings, water vapor inlet and outlet, oil holes, or defects that affect the appearance on the surface.

　　3. Materials and Hardness

　　Anti corrosion measures should be taken for the formed surface. The hardness of the molded parts should not be less than 50HRC, or the surface hardening treatment hardness should be higher than 600HV.

　　4. Cooling system for molds

　　The cooling or heating system should be fully unobstructed. Water and oil channel separators should be made of materials that are not easily corroded.

　　5. Pouring system

　　The gate setting should not affect the appearance of the product and meet the requirements of product assembly. The cross-section and length of the flow channel should be designed reasonably, and the process should be shortened as much as possible while ensuring the forming quality, reducing the cross-sectional area to shorten the filling and cooling time.

　　6. Typing surface

　　The surface of the front and rear molds should not have any unevenness, pits, rust, or other defects that affect the appearance. The inlay should be matched with the mold frame, and there should be a gap of less than 1mm around the rounded corners.

　　7. Storage and maintenance

　　The mold cavity should be cleaned and sprayed with anti rust oil. The inlet and outlet of mold water, liquid, gas, and electricity should be sealed to prevent foreign objects from entering. Mold product drawings, structural drawings, cooling and heating system drawings, hot runner drawings, supplier details of spare parts and mold materials, user manuals, mold testing reports, factory inspection certificates, and electronic documents should all be complete.

　　The secret to making good aluminum alloy die-casting molds

　　(1) The precision of the mold should be high enough, and the dimensional accuracy of the main components it cooperates with should reach 0.01mm or more. Accuracy means stability. In high-efficiency and long-term work, if the mold is unstable, the produced die-casting parts will inevitably have a large number of defects, and unstable quality is a major taboo for die-casting parts;

　　(2) Plasma spraying is applied to the parts that come into direct contact with the die casting during ejection, forming a high hardness coating with a thickness of less than 0.005mm on these areas. This can reduce the stress on the die casting and prevent these areas from being scratched or stuck to aluminum;

　　(3) The ejection of die-casting parts must be carried out in a certain order, and the side core must be completely demolded before ejection. The purpose is to provide effective support and protection for the die-casting parts during the process of extracting the side core.

　　(4) If possible, adjust the ratio of aluminum alloy liquid to improve the performance of die-casting parts.

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