Reasons for different colors of iron powder and iron flakes.

1. The forms of iron and iron powder are different. In different forms, the effect of light on them is also not the same, so when we watch, there will be a visual difference, which causes us to see The colors are different.

Iron powder is the main raw material for powder metallurgy. According to the granularity, it is customarily divided into five grades: coarse powder, medium powder, fine powder, fine powder and ultrafine powder. The iron powder composed of particles in the range of 150-500 μm in size is coarse powder, medium-sized powder is in the size of 44-150 μm, fine powder is in 10-44 μm, extremely fine powder is 0.5-10 μm, and ultra-fine is smaller than 0.5 μm. powder. Generally, the 325-mesh standard sieve, ie, the powder with a particle size of less than 44 μm, is called a sub-sieve powder. For higher-accuracy screening, only air-flow classification equipment can be used, but for some easily oxidized iron powder, only JZDF can be used. Nitrogen protection grading machine to do. Iron powder mainly includes reduced iron powder and atomized iron powder, which are named after different production methods.