Die casting is a highly efficient and cutting free metal forming precision casting method that has developed rapidly in modern metal processing technology. It is a "good, fast, and cost-effective" casting method with high economic benefits.
The shape of die-casting parts can be roughly divided into six categories:
1. Disc type——Number plate holder, etc;
2. Round cover type——Cover, hood, chassis, etc;
3. Circular ring type - connectors, bearing retainers, steering wheels, etc;
4. Cylinder type——Flange jacket, conduit, shell shaped cover, upper cover, instrument cover, probe control instrument cover, camera housing and carburetor, etc;
5. Porous cylinder bodies and shells - shells with complex structures such as cylinder blocks, cylinder heads, and oil pump bodies (which require high mechanical performance and airtightness, and are generally made of aluminum alloy). For example, cylinder blocks and cylinder heads of cars and motorcycles;
6. Special shape category——Decorative die-casting parts composed of ribs for impellers, horns, and fonts.
Introduction to Die Casting Release Agent:
Die casting release agent is mainly used for die casting of engine cylinder block, engine casing, oil pan, gearbox shell, wheel hub, etc.
Characteristics of Die Casting Release Agent:
1. Superior demolding performance - sprayed onto the surface of the mold. The active ingredients immediately form a dense film. The film is resistant to high pressure, erosion, and low friction coefficient (0.08mm-0.15mm) during the injection process, effectively preventing the welding of die-casting products and molds. Plays a role in release and anti sticking to prevent product deformation. At the same time, excellent lubrication performance accelerates the fluidity of aluminum liquid, allowing it to quickly form in the mold cavity. Avoid causing product defects and pulling.
2. Premium surface finish——Using rare and special materials. It can effectively solve the problems of blackening on the surface of castings, excessive water marks, and avoid cold insulation. Can solve problems in post-processing of products, such as polishing and electroplating.
3. Fully protect the mold——Form a protective film on the surface of the mold. Effectively reduce the heat and mechanical impact of aluminum liquid on the mold. Choosing high-quality release agents correctly can effectively protect the mold, extend its service life, and reduce the number of mold repairs.
4. No carbon deposition performance——The operation is very simple and convenient. No carbon deposition, no mold scale, and no formation of oxide scale. Reduce the frequency of mold saving and cleaning, resulting in a smooth and shiny surface of the product, without affecting subsequent electroplating, polishing, and spraying surface treatments.
5. Superior high temperature resistance performance——Has good thermal and chemical stability. Within the temperature range of use, it does not oxidize, burn, corrode molds, or have residual surface decomposition. Even at a high temperature of 300 ℃, the initial weight is very small (the initial weight during heating does not exceed 10%). Thus ensuring the formation of a strong release film on the mold under high temperature conditions. Plays a role in suppressing high-temperature sintering, achieving lubrication and demolding.
6. Good cooling effect——Effective control during the die-casting process is achieved by continuously heating the mold with high-temperature liquid metal, causing its temperature to rise. Excessive mold temperature can lead to defects in the die-casting parts. Such as sticking molds, bubbling, hot cracking, and burns. At the same time, long-term high-temperature operation of the mold results in a decrease in the strength of the mold material, causing cracks and a decrease in the service life of the mold.
7. High security performance——Non toxic, non flammable, non corrosive, and non reactive. Does not produce harmful smoke during use. The surface of the mold and product is free of residue, easy to clean and maintain, and can be cleaned immediately without affecting subsequent processing.
