1. It is not only wear-resistant, but also tough: the plastic mold is subjected to long-term thermal alternating load, and it is also subjected to friction for a long time. If only the friction-resistant side is considered and the side is subjected to thermal alternating load, if the high-carbon high-alloy steel used for cold stamping dies is used, it will inevitably cause cracking due to insufficient toughness.
2. Plastic mold The United States is the first country to list the special steel for plastic molds in tool steel, which is mainly expressed by P, which is divided into five categories.
3. The mold material is mainly mold steel, which is generally carbon steel, alloy tool steel, alloy structural steel, cemented carbide and steel-bonded cemented carbide, cast iron and non-ferrous metals.
4. Die steel is classified according to its use Cold work die steel Cold work die steel is mainly used to manufacture molds for pressing and forming workpieces in a cold state. Such as cold stamping die, cold stamping die, cold drawing die, embossing die, cold extrusion die, thread pressing die and powder pressing die, etc.
5. Die steel can generally be divided into three categories: cold work die steel, hot work die steel and mold steel for plastic forming: cold work die steel Cold work die steel is mainly used to manufacture molds for pressing and forming workpieces in a cold state.
6. Die steel is mainly divided into three categories: cold work die steel, hot work die steel and plastic die steel. Their use and working conditions are different, so the performance requirements for mold steels are also different. Cold work die steel is mainly used for the manufacture of molds with complex working conditions such as cold stamping dies, wire drawing dies, and imprinting dies.
1. The United States divides die steel into four categories according to the service conditions of the mold, and the Tool Steel Committee of the American Institute for Metals has listed: cold work die steel, hot work die steel, plastic die steel, and plastic die steel. Among them, cold work die steel is divided into 12 subcategories, hot work die steel 9 subcategories, plastic die steel 2 subcategories, plastic die steel 5 subcategories.
2. It is usually based on the type and characteristics of plastics, and considers the needs of mold processing and forming manufacturers, and then selects the most suitable steel grade with the number of moldings. Figure 1-1 shows the selection method of plastic mold steel, phenolic resin, melamine resin, epoxy resin, polyester resin and other thermosetting plastics, as well as polyethylene.
3. Of course, the mold is generally made of die steel, according to the type of mold, there are special production of cold work die steel, hot work die steel, plastic die steel, of course, in order to reduce costs, there are also profiteers who use other steel, after all, die steel is expensive, and the average person can not see.
4. S136 mold steel: S136 plastic mold steel has excellent corrosion resistance, wear resistance, polishing, machinability and dimensional stability, and can be widely used in cameras, sunglasses lenses, syringes, analysis bottles, food industry machinery components, etc.
5. High alloy: Commonly used alloying elements are CR, MN, MO, W, V, etc. Mn, Cr, etc. can improve hardenability, carbide forming elements can form insoluble carbides, refine grains, and improve wear resistance.
6. That kind of can. The oxide layer of H13 die steel with high chromium content is difficult to wash off with hydrochloric acid. There's another way that I'm using myself. Since your mold has been polished, the surface is relatively smooth. In fact, it can be sanded with only coarse oil stones, or sanded with abrasive belts, and then heat treated.