Making of heat shield
The production process of molybdenum heat shield involves a number of steps, usually including the selection of molybdenum materials, processing, forming and heat treatment and other processes, designed to ensure that the heat shield can effectively protect the equipment in a high temperature environment and has good durability. The following is the basic process of making a molybdenum heat shield:
1. Molybdenum material selection
The core requirements of molybdenum heat shield are high temperature resistance and oxidation resistance, so the selection of high purity molybdenum material is the first step in the production. For applications requiring greater high temperature resistance, molybdenum alloys (such as TZM alloy, molybdenum-zirconium-titanium alloy) may be selected to improve oxidation resistance and thermal stability.
2. Material cutting and preparation
Molybdenum material is usually provided in sheet, foil or bar form. According to the size and design requirements of the heat shield, the molybdenum material is first cut to the appropriate size. This step usually uses precision methods such as laser cutting, flame cutting or electrolytic cutting to ensure that the cutting edge is smooth and meets specifications.
3. Forming and processing
According to the design shape of the heat shield, the molybdenum material needs to be processed by different forming processes. Common processing methods are:
Stamping: The use of specialized dies and presses to press molybdenum material into the desired shape, such as round, curved or other complex geometric shapes.
Hot forging: Molybdenum material is heated and forged to form it, suitable for larger size heat shields or parts that need to withstand high pressure.
Laser cutting and welding: Molybdenum heat shields with complex shapes or special needs can be precision machined by laser cutting technology and welded with molybdenum alloys.
4. Surface treatment
Molybdenum material itself has strong high temperature resistance, but in order to enhance its oxidation resistance, surface treatment can be carried out:
Oxidation treatment: Through high temperature oxidation, a thin oxide film is formed on the surface of molybdenum to improve its corrosion resistance in high temperature environment.
Coating treatment: The use of molybdenum coating or other high temperature resistant coating to further enhance its thermal insulation effect and prevent high-temperature gas contact with the molybdenum surface.
5. Heat treatment
Molybdenum materials are prone to internal stress during processing, so annealing or other heat treatment processes are usually required after processing. This step helps to remove the internal stress of the material, improve its toughness and ductility, and avoid brittle breaks or cracks at high temperatures.
6. Precision machining and testing
For molybdenum heat shields with high precision requirements, further precision machining, such as grinding, turning, drilling, etc., may be required to ensure that the final product is accurate in size, smooth in surface, and meets the design specifications. After processing, it is also necessary to carry out strict quality inspection to check its size, surface quality and high temperature resistance.
Mosten Alloy can produce molybdenum sheet, molybdenum block, molybdenum foil, molybdenum rod, molybdenum wire, molybdenum processing workpiece according to customer demand.
