The manufacturer of Powder metallurgy agricultural machinery parts tells you that because the powder metallurgy itself is porous, there will be some fine pores inside and on the surface of the powder metallurgy parts, and the parts will be deformed when they are affected by water vapor and other hydroxide ions in the air. And the case of rust, the purpose of cleaning is to deal with various rust problems.

1: Clean with water-soluble detergent
Manufacturers of Powder metallurgy agricultural machinery parts tell you that water-soluble cleaning agents can effectively remove part of the rust and improve the brightness of parts. Cleaning with water-soluble cleaning agents requires additional dehydration and anti-rust processes. If dehydration is not performed, the parts will be damaged. A series of problems on the surface can be solved, but with the increase of time, there will be a certain amount of corrosion on the part from the inside to the place. If there is internal corrosion, the part will not be able to be used normally.
2: Vacuum hydrocarbon ultrasonic cleaning
The manufacturer of Powder metallurgy agricultural machinery parts tells you that vacuum hydrocarbon ultrasonic cleaning is a cleaning method with relatively high overall cost. For some bearings with high precision, various engine parts and small parts need to use vacuum hydrocarbon. The cleaning method can avoid the formation of rust from the inside to the outside. Hydrocarbon solvents are easy to volatilize in the normal temperature environment, and it is difficult to store them. Environmental factors and the cost of use should be considered comprehensively.
3: Cleaning of kerosene and white oil
The cleaning of kerosene and white oil is a traditional cleaning method. The manufacturer of Powder metallurgy agricultural machinery parts tells you that due to the continuous improvement of people's requirements for the precision of powder metallurgy parts, these two types of cleaning methods are gradually eliminated. Compared with kerosene and white oil, white oil has better antirust ability, but because of its relatively high tension, it has certain requirements for density, and not all parts can be cleaned with these two solvents.