TZM molybdenum alloy is a material with excellent mechanical properties and high-temperature resistance, widely used in aerospace, nuclear industry, and high-temperature furnace applications. Due to its high hardness, high melting point, and low ductility, the cutting and forming processes of TZM molybdenum alloy plates present certain technical challenges. Below are the primary methods and considerations for cutting and forming TZM alloy plates:
Cutting Methods
Given the high hardness and low ductility of TZM molybdenum alloy, common cutting methods include mechanical cutting, electrical discharge machining (EDM), and laser cutting.
1.Mechanical Cutting: Utilizes carbide tools or diamond tools for cutting, suitable for thinner TZM plates. During the cutting process, it is essential to ensure sharp tools and moderate cutting speed to avoid tool damage or cracks on the material surface.
2.Electrical Discharge Machining (EDM): Ideal for cutting thicker or more complex-shaped TZM plates, ensuring high precision and a smooth cutting surface.
3.Laser Cutting: Suitable for high-speed cutting of thin plates, offering high efficiency, precision, and quality edges. However, heat input must be controlled to avoid localized overheating of the material.
Forming Processes
The forming of TZM molybdenum alloy plates mainly involves a combination of cold and hot processing techniques.
1.Cold Processing: Includes processes such as stamping and bending. Due to the low ductility of TZM molybdenum alloy, cold processing should be performed under low strain conditions, and lubricated molds should be used to minimize the risk of crack formation.
2.Hot Processing: Includes processes such as hot rolling and hot pressing. These are typically performed at high temperatures ranging from 1200°C to 1500°C to improve the plasticity and processability of the material. Uniform heating is necessary to prevent deformation or stress concentration due to uneven temperatures.
Considerations
When cutting and forming TZM alloy plates, excessive heat input or processing stress should be avoided to prevent material performance degradation or the formation of micro-cracks. Post-processing annealing or heat treatment is recommended to relieve stress and optimize the mechanical properties of the material.
With scientifically designed cutting and forming processes, TZM alloy plates can be efficiently processed into various complex shapes to meet the stringent requirements of different industrial applications.
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