Stainless Steel Medical Cross Dental Brackets Carbide Mold Powder Metallurgy

Carbide mold Powder Metallurgy Stainless Steel Medical Cross Dental Brackets.
 
Description

Atomization is the best way to produce fully alloyed powders, known as pre-alloyed powders. Each particle of this powder not only has the exact same homogeneous chemical composition as the given molten alloy, but also has a refined crystalline structure due to rapid solidification; macrosegregation of the second phase is eliminated.

The atomization pulverizing method is divided into two categories: "double-flow method" (broken alloy liquid flow by atomizing medium flow) and "single-flow method" (broken alloy liquid flow by other methods). The atomization medium of the former 846 is divided into gas (helium, deuterium, nitrogen, air) and liquid (water, oil); the latter such as centrifugal atomization and dissolved gas vacuum atomization.

The most widely used methods are gas atomization and water atomization. When atomizing powder, first use electric furnace or induction furnace to smelt metal raw materials into alloy liquid with qualified composition (generally overheated at 100-150 ℃), and then inject it into the tundish located above the atomizing nozzle. The alloy liquid flows out from the leakage hole at the bottom of the tundish. When passing through the nozzle, it meets the high-speed airflow or water flow and is atomized into fine droplets. The atomized droplets rapidly solidify into alloy powder in the closed atomizing cylinder. Usually, inert gas atomized powder particles are round, with the lowest oxygen content (less than 100×10), and can be directly made into densified products by thermoforming techniques (such as hot isostatic pressing).

 
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