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- Molybdenum heat shields
Molybdenum heat shields
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Molybdenum heat shields are distinguished by very high heat resistance and mechanical strength. The melting point of molybdenum 2620 °C refractoriness, it is second only to tungsten, rhenium, osmium, iridiu. Molybdenum retains strength at temperatures up to 2000 °C. To 1370 °with its relative thermal strength is higher than that of tungsten. Molybdenum is characterized by minimum thermal expansion coefficient, high elastic modulus, excellent corrosion resistance, allowing it to be used in the most demanding conditions, including in aggressive environment.
The disadvantage is the high production cost of molybdenum heat shields. Because of the significant hardness and refractoriness molybdenum difficult technological processing. Production it time-consuming, and obtaining it in its pure form is quite difficult. Under normal conditions, it is rigid and not very technological material.
Molybdenum heat shields made in the form of nested cylindrical shells of sheet molybdenum. The space between them is filled with molybdenum powder or wolframmathematica chips. After Assembly the entire construction is subjected to a flame sintering. Dimensions and tolerances are agreed with the customer. The latest production technology, guarantee the high reliability and temperature resistance molybdenum heat shields. The price depends on the size, complexity, configuration, processing, and additional requirements delivery.
Heat shields are demanded in engineering and metallurgy as heat-resistant protection during melting, sintering and annealing of powder raw materials (non-metals and rare earth metals) in a reduction atmosphere. Such screens are used in melting sapphires, growing single crystals.
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Reasonable cost and molybdenum heat shields, a wide range of sizes allows any customer to choose the product that most fully meets all requests. High quality workmanship and full compliance of products with the requirements of the state normative documents and technical conditions for the supply — the main criterion, which adheres to our company in working with clients. The exact chemical composition and adjusted manufacturing technology will ensure reliable operation of products. All operating characteristics correspond to the declared quality, reasonable prices and convenient delivery method is the additional benefit of working with us.