1. What materials are used for die-casting molds?
1. Common materials The alloys used in die castings are mainly non-ferrous alloys, and ferrous metals (steel, iron, etc.) are rarely used due to mold materials and other problems. Among the non-ferrous alloy die castings, aluminum alloy is widely used, followed by zinc alloy. The following is a brief introduction to the situation of die-casting non-ferrous metals.
2. Common materials for die-casting molds include tool steel, alloy steel and cast steel.
Tool steels have high hardness, strength and wear resistance, making them suitable for the production of large quantities of products. Alloy steel has high heat resistance and fatigue resistance, and has good stability in high temperature environments.
3. Copper alloy is an excellent die-casting mold material, with good thermal conductivity, electrical conductivity and corrosion resistance. In die casting molds, copper alloys can maintain the precision and stability of the mold while reducing wear and damage to the mold. Factors for the selection of die casting mold materials Choosing the right die casting mold material can improve the service life and production efficiency of the mold.
4. Common mold materials include steel, aluminum, copper, etc. Steel has high strength and hardness, making it suitable for large and complex mold making;Aluminum has excellent thermal conductivity and is suitable for die casting processes with high requirements for high-speed coolingCopper has good thermal conductivity and wear resistance, and is suitable for die casting under high temperature and high pressure conditions.
5. Mold material: Mold material is one of the most important materials in die-casting mold manufacturing, and commonly used mold materials include aluminum, steel, titanium alloy, high-temperature alloy, etc. The selection of mold materials should be based on specific production needs and cost budgets to meet the required wear resistance, hardness, strength, toughness and other indicators.
6. Mold factory C: General H13, 2344, SKD61, senior H13, 8407, advanced H11, 2343, Vidars, Dievar, QRO90S, are commonly used materials. Dievar, the latest development of tool steel, has the highest possible ductility, toughness and red hardness.
2. What steel grade is used for SMC sheet molding mold?
1. Glass fiber is very harmful to the mold, so try to use anti-corrosion special steel, such as S136 or S136H. SKD61 or 8407 or FDAC will also do, but heat treat to more than 65HRC. What steel grade material is used for SMC sheet molding mold to see whether the product quantity is large or not, forty-five forgings are generally selected. Glass fiber is very harmful to the mold, so try to use anti-corrosion special steel, such as S136 or S136H. SKD61 or 8407 or FDAC will also do, but heat treat to more than 65HRC.
3. Alloy structural steel for special purposes, the steel number is crowned with (or suffix) to represent the symbol of the use of the steel grade. For example, for 30CrMnsi steel for rivets, the steel number is expressed as ml30crmnsi. Low-alloy high-strength steel The way of expressing the steel grade is basically the same as that of alloy structural steel.
4. Carbon mold steel is generally used for injection molding: medium carbon structural steel is mainly used, and the representative steel grades are S45C, S48C, S50C, S55C, etc. Pre-hardened die steel: mainly medium carbon alloy steel with high hardenability.
5. Tungsten is added to the tool steel, which can significantly improve the red hardness and thermal strength, and is used as cutting tools and forging dies. 1Niobium (NB): Niobium can refine grains and reduce the overheating sensitivity and tempering brittleness of steel, and improve strength, but the plasticity and toughness are reduced.