模具材料（Mold material）.docVIP

模具材料（Mold material） 1. what is the material? Answer: material is a material that can make useful things for human beings economically 2. classification of materials Answer: (1) according to the chemical composition of the material classification. Metal and nonmetal, nonmetal can be divided into three types: macromolecule material, ceramic material and composite material Two properties of 3. materials Answer: generally can be divided into the use of performance and process performance of the two categories 4. deformation of metal materials in three stages Answer: elastic deformation, elastic-plastic deformation and plastic deformation 5. basic composition of metal materials Answer: carbon and iron 6. critical point and crystallization temperature Answer: the temperature at which the metal structure changes is called the critical point, and the crystallization temperature is a critical point 7. heat treatment can be divided into two types Answer: pre heat treatment and final heat treatment 8. die steel can be divided into four types Answer: 1, flame quenched steel 2, matrix steel 3, high toughness low alloy cold working die steel 4, high carbon medium chromium wear-resistant die steel 9., the selection of three principles of mold materials Answer: first, the use of performance principles; two is the principle of technological performance; three is the economic principles and the universality of mold materials 10., the use of mold material performance Answer: mainly including hardness, strength, toughness and wear resistance 11. the process performance of mold material Answer: 1, machinability 2, hardenability and hardenability 3, quenching temperature and heat treatment deformation 4, oxidation and decarburization sensitivity of 5, and other factors 12. cold working die and its representative Answer: cold working die refers to the normal temperature of the material for pressure processing or other processing used by the mold, which represents the cold die What is the