Density and application of molybdenum sheet
Molybdenum belongs to a group of refractory metals. Refractory metals are those whose melting point is higher than platinum (1772 ℃). In refractory metals, the binding energies of individual metal atoms are particularly high. At the same time, it has high melting point, low steam pressure, high elastic modulus and high thermal stability. In addition, it shows the typical characteristics of low thermal expansion coefficient and high density.
With good mechanical and chemical properties, molybdenum has become a metal material that can meet stringent requirements. Its advantages lie in its high melting point, low thermal expansion coefficient and good thermal conductivity, so it is widely used in many different industrial fields.
Characteristics of molybdenum:
1. Melting point of molybdenum 2623°C, good creep resistance, can withstand higher temperature.
2. Low thermal expansion coefficient and high thermal conductivity.
Production process:
Molybdenum billet (raw material)- inspection - Hot rolling - Leveling and annealing - Alkali washing - inspection - Warm drawing - Vacuum annealing - Inspection - Cold rolling - Leveling - Shearing vacuum annealing - inspection - packaging
Application:
After deformation reaches more than 60% of the rolling process, the density of molybdenum sheet basically close to the density of molybdenum theory, so it has high strength, uniform internal organization and excellent high temperature creep resistance, which is widely used in production of sapphire crystal growth furnace reflective screen, cover plate, reflective screen in a vacuum furnace, tropical, fittings, plasma deposition sputtering target material, High temperature resistant molybdenum parts, heat resistant equipment, sputtering equipment and high temperature furnace products.
Technical key points of high purity molybdenum slice:
1. The key technology of producing high-quality molybdenum sheet is to grasp the quality of raw materials, standardize the operation procedures and adopt reasonable production technology.
2: The key to improve the surface quality of molybdenum sheet is to control the production quality of the end face grinding process and the upper and lower surface finish, and then choose the advanced two-sided four-direction grinding machine, which can make the surface quality accuracy of the product meet the requirements.
MO1 pure molybdenum plate is black brown, if washed by alkali, it will be silver gray metallic luster, smooth surface, without heavy skin, lamination, crack, crack edge, impurities clamp and other defects. Thickness >0.7mm in hot rolled state supply, thickness <0.7mm in cold rolled or clean surface state.
