Refractory metal processing solutions
Common refractory metals such as tungsten have high melting points (3410°C), high density, and excellent corrosion resistance. They are often used in metallurgy, electronics, chemical engineering, and the nuclear industry to produce high-temperature resistant components such as electrodes, cladding materials for high-temperature reactors, balance devices, and medical X-ray tube tungsten targets. Tungsten can be made into ingots or sintered products. Tungsten ingots can be rolled into bars or profiles after peeling, or cold-drawn into wire. Sintered tungsten products are often made into high-density alloys.
Molybdenum also has a high melting point (2620°C), moderate density, extremely high modulus of elasticity, low coefficient of thermal expansion, and good electrical and thermal conductivity. Molybdenum has good adhesion and is commonly used for surface spraying on steel parts to reduce wear and increase service life. Molybdenum can also be used as vacuum spraying electrodes, vacuum evaporation metals, vacuum furnace shielding plates, heating elements, and high-temperature components. It is suitable for making parts with high rigidity and hardness requirements, such as boring bar rods and grinding shafts. Molybdenum has good corrosion resistance and is typically used to make pumps and impeller shafts that work in molten zinc or zinc vapor.
Characteristics of tungsten-molybdenum cutting:
The oxide layer of various refractory metal ingots is firm and rough, increasing impact and vibration during cutting, making the tool prone to chipping and damage.
Tungsten-molybdenum metals have active chemical properties and strong affinity, leading to chip adhesion during cutting, exacerbating tool wear. The phenomenon of chip adhesion is particularly severe with niobium and tantalum materials.
Refractory metals like tungsten and molybdenum are brittle at room temperature. Their sintered products produce powdery chips during cutting, with very high hardness, leading to severe tool wear.
Rheniumet Precision has developed super hard alloy cutting tools for such products by adding precious metals and refining the grain structure of hard alloy cutting tool materials, enhancing the tool's red hardness and wear resistance, effectively improving tool life and machining efficiency.
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