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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 of metal components, 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
The metal powder preparation processes can currently be divided into reduction method (also known as a reduction process), electrolysis method (also known as a carbonyl decomposition technique), grinding method (also called atomization), etc. The preparation process determines the type of metal powder. In the powder metallurgy sector, powders produced by reduction and electrolysis are the most commonly used raw materials. Modern atomization methods can also be used to control the shape and size of the powder. The development of the 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 way to mechanically reduce molten metal particles down to less than 150mm.
The water atomization process is an inexpensive method for producing powder. The atomization media water is cheap and easy to get, but it also provides excellent atomization. The domestic water atomization technique is used primarily to produce steel, matrix powder for diamond tooling, pre-alloys powder 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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