technology allows for 3D printing. Its most notable advantage is the ability to generate parts in any shape directly from computer graphics data, without any machining and molds. This greatly reduces the product development cycle while increasing productivity and reducing costs. Metal powder, the main raw material in 3D printing metal parts, has caught people’s interest. 3D Printing Metal Powder is the most valuable and important part of 3D Printing Industry Chain of metal parts.
Metal powder preparation process
The metal powder preparation processes can currently be categorized into a reduction process, an electrolysis procedure, a carbonyl decomposition procedure, atomization or grinding methods, etc. According to the process of preparation. In the powder metallurgy sector, powders produced by reduction electrolysis or atomization are the most commonly used raw materials. The atomization technique can be used for alloy powder production, and modern atomization can also control powder shape. The development of atomization cavities has greatly improved the efficiency of atomization, making the atomization technique the most popular method to produce powder. The atomization technique meets the specific requirements of 3D printed consumable metals powder. The atomization process is a mechanical pulverization of molten metal to particles of less than 150mm in size.
The water atomization process is a low-cost method for producing powder atomized. The atomization media water is cheap and easy to get, but it also provides excellent atomization. The domestic water atomization technique is used mainly to produce steel, matrix powders for diamond tools, prealloy powders for oil-bearing rollers, powders for hard-surface technology, and iron and nickel-based magnet powders. The specific heat of water being much greater than the gas’s, it is possible that the metal droplets will solidify and become irregular during the atomization. Water will react with other metals or alloys that have a high level of activity. In addition, contact with the water during the atomization will increase the amount of oxygen in the powder. This limits the use of water atomization for metal powders of high sphericity with low oxygen contents.
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