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Production Introduction
1. Molybdenum bar is a metal bar made of molybdenum powder, which has a high melting point, good thermal conductivity, and low thermal expansion performance.
2. Basic Information
Pure molybdenum bar: the content of molybdenum is greater than 99.95%.
Surface: Bright surface, Black surface, alkaline washing surface
Molybdenum melting point: 2610 degrees Celsius.
Molybdenum, a chemical symbol Mo, atomic number 42, atomic volume 9.4cm3/mol, is a transition metal element, a trace element necessary for the human body, animals, and plants. The simple substance of molybdenum is a silver-white metal, hard and tough. Different tissues of the human body include molybdenum, and the total quantity in the human body is about 9mg, with the highest content in the liver and kidney.
Molybdenum has a high melting point and ranks sixth among natural simple substances, and is called a refractory metal. The density of molybdenum is 10.23g/cm3
Molybdenum bar ASTM B387 Type 361 is a commercially pure grade with 99.9% molybdenum. It contains trace components such as aluminum, silicon, potassium, iron, nickel, chromium, sodium, copper, and tungsten, which can strengthen metals.
The molybdenum bar is resistant to oxidation and has high strength at high temperatures. Molybdenum rods can be used to manufacture electric vacuum devices and electric light source parts, as well as high-temperature heating elements, high-temperature structural parts, electrodes, etc.
Detail Shows
Pure molybdenum bar
Molybdenum round bar
3. Molybdenum bar applications
Molybdenum bar is mainly used for manufacturing electric vacuum devices and electric light source parts, processing ion-implanted parts, as the high-temperature heating elements and high-temperature structural parts, furnace electrode in glass and refractory fiber industry works in 1300 ℃ molten glass with long service life. It is used as an electrode in rare earth.
Pure molybdenum rods are used as anode materials in low-pressure X-ray applications. Sometimes, molybdenum is used instead of tungsten. Different levels have different compositions and different use cases. The molybdenum purity of ASME sa387 molybdenum rod exceeds 99.95%. The high melting point of this material is only surpassed by tungsten and titanium, making it one of the commercial products for high-temperature operation.
4. Molybdenum bar production process
Step 1. Put molybdenum powder with a particle size of 1.6-2.5μm and a purity of ≥99.98% into a rubber mold sleeve to prepare a solid powdery molybdenum rod blank, and then use a cold isostatic press to shape it at a pressure of 300Mpa for 10 minutes Solid rod forming;
Step 2: Put the formed solid rod blank into an intermediate frequency sintering furnace, and hydrogen gas is introduced into the furnace, and the heating temperature is 1800°C.
The heating time is 27 hours, and then the temperature is cooled by water circulation for 9 hours, and then it is naturally placed to cool to room temperature, and the rod blank is formed for use;
Step 3. Heat the formed bar after step 2 to 1500°C for 1 hour. After taking it out, tap it with a 700 kg air hammer 15 times, then stretch it to the required size, and then place the molybdenum bar. Tempering in an electric furnace for half an hour, the tempering temperature is 450 ℃, standby;
Step 4. The molybdenum rod processed in step 3 is processed by mechanical processing so that the surface roughness reaches Ra1.6~Ra3.2µm, and the molybdenum bar is completed.
It can be said that user needs are the basis of our product design and the source and starting point of the 99.95% Pure Molybdenum Rods and Bars design. Strong strength, rich experience and the enterprise tradition of honest service to customers are the solid foundation for us to realize our commitment and unremitting pursuit. Although the future development road is still very long, we will, as always, adhere to the intention to do a good job in every product, serve every customer well.
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