Military Tungsten Alloy Preparation Techniques

Preparation of military bullets, armor-piercing shells and other materials generally require a high-density, high strength, high temperature resistant, not easily deformed and other characteristics. The high-density tungsten alloy just to meet their individual requirements. Therefore, the preparation of technical studies tungsten alloys in the manufacturing of military ballistic aspect is particularly important.

Tungsten grain refinement become a new hot spot of high-density tungsten alloy research, using mechanical alloying (MA), prepared by condensation drying method, chemical vapor deposition method, spray drying, sol-gel method and other methods of pre-alloyed powder, and the use of appropriate process may be prepared by a very fine powder. Furthermore, the reaction process may be a spray-step synthesis of fine grain, multi-component, pre-alloyed tungsten-based alloy powder, the powder can be a tungsten-based alloy at a temperature well below the melting point of the binder phase sintered to high density.

MA process for preparing nanocrystalline tungsten alloy composite powder, by sintering atmosphere of hydrogen at atmospheric pressure and tungsten grain densification during sintering behavior grew, MA process for preparing nanocrystalline powders can promote densification, so that densification temperature reduced by about 100 ℃~ 200 ℃, when the solid-phase sintering temperature can be generally obtained 3μm~ 5μm grain size of fine grain high-strength alloy interface. They also nano-tungsten alloy injection molding studied, indicating that 1 350℃ ~ 1 450 ℃ solid phase sintering to achieve full density i.e., the final alloy grains is about 3μm, tensile strength greater than 1200MPa. Temperature and pressure can significantly improve green density, temperature and pressure radial contraction blank blank room temperature is less than the radial contraction, and temperature and pressure can improve the microstructure of tungsten alloy. Also, the use of pre-oxidized tungsten alloy activated sintering, the sintering temperature can be lowered to reduce the tungsten alloy deformed and obtain a dense tungsten alloy, and can improve the tensile strength and elongation of tungsten alloy.


Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

• < Prev
• Next >