On November 21st, China`s leading 3D printing titanium alloy powder technology company, HEHY Titanium Alloy Technology Co., Ltd. announced the development of a space-grade high-temperature alloy titanium powder that can be used to replace iron or nickel-based high-temperature alloy parts. Up to 550°C.
The titanium alloy powder developed by HEHY contains titanium, aluminum, zirconium, tin, molybdenum, niobium and silicon components and is named TA32 alloy.
HEHY uses cold crucible vacuum induction melting and air atomization technology (VIGA-CC) to prepare this powder. (Note: Cold crucible vacuum induction smelting is a semi-suspension smelting of the material under vacuum by placing a water-cooled split crucible in the alternating magnetic field of a dry coil, and using the principle of induction heating. This technology is characterized by being melted The material and the crucible wall are kept in a non-contact state, and there is a strong stirring effect of the magnetic field. The smelted material contains less impurities, uniform composition, improved performance, especially for active materials, the effect is better.) After testing, the powder prepared in this way has High purity, high sphericity, fluidity and bulk density are very suitable for metal 3D printing, and TA32 still exhibits excellent tensile strength, toughness and plasticity at high temperatures. Through the "parameter editor" software of the metal laser sintering equipment, the processing parameters can be customized in the material development, and a large number of sintering tests can be performed by adjusting the laser energy density, thus greatly shortening the material development cycle. The metallographic analysis of the sintered parts of TA32 shows that the grains are small and there are no cracks, holes and other defects.