What is powder metallurgy?

Powder metallurgy is a process that involves converting the powder into a solid object. The powder is usually a type of metal such as iron, and an object to be made is usually shaped to die or cast. Extremely high pressures and high temperatures are required to create and produce metal objects through powder metallurgy. The first step in powder metallurgy is to transform the raw material into a powder form with commonly used techniques in powder metallurgy. Crushing, grinding and the use of chemical reactions are common methods of powder production. Atomization is a technique in which the material is melted into a molten liquid and is forced by a small nozzle or tube at high speed. This causes the liquid to be divided into individual droplets when it leaves the tube. The droplets are collected and left to solidify, resulting in fine grain size. Usually the powder is poured into the matrix and the press plate is lowered to push it. The resulting object is released from the matrix. Usually with tlAK ranges from 80 to 1,000 dogs.

Another method for compressing powder is called isostatic compact powder. This technique uses a flexible form found in pressure form. The powder is placed in a flexible mold, while the machine adds pressure fluid to a pressure fluid or gas. The pressure ranges from 15,000 dogs to 40,000 dogs. This method does not require lubricants when the powder is compacted but standard compact ground. Then the object is strengthened by salting.

Sintering is a heating process that connects the individual particles of the metal powder together. Usually it takes place in a mucus oven, where the temperature is set just below the metal melting point. This method is used in the production of ceramics. The process was patented by A. G. Bloxam in 1906, but there is proof that the practice of joining metal powders into solid objects has its origin in antiquity.

some methods combine fromPowder compaction and sintering process such as hot isostatic pressing. The process usually includes the use of pressure argon gas and temperatures between 900 ° F (480 ° C) and 2250 ° C (1230 ° C). The powder is simultaneously compacted and salty, saving time and material. This method also produces thinner walls and most parts compared to standard powder compression methods.