The layered abrasive grains are extremely thin free metal abrasive grains with defects such as holes and voids on the surface.
The red oxide particles are Fe2O3 compounds, which can be deposited in various parts of the spectrum. There are two types of red oxide particles: red iron oxide particles generated by water entering the lubrication system, and the surface of the fatigue-peeled particles is smooth. The flat outline is irregular, and the size of the abrasive grains is larger than 10 μm. NINGBO DURREX PUMPS CO.,LTD , https://www.durrexlobepump.com
The maximum size is up to 100μm and the shape factor is 10:1. When the surface of the moving parts is pitting or pitting, it is composed of the actual material of the peeling. When the number of fatigue-peeling particles larger than 101μm increases, it is the sign of abnormal wear. .
(5) Spherical particles are formed by the action of the relative motion of the inner surface of the fatigue crack. The diameter of the abrasive grains is mostly about 3 μm. Under the illumination of white reflected light, the spherical abrasive grains from Shanghai to Zhumadian Logistics Co., Ltd. have bright central and black ring imaging points. A large number of spherical particles are signs of mechanical failure.
(6) The layered abrasive grains are extremely thin free metal abrasive grains, and the surface has defects such as cavities and voids. It is formed by the rolling contact after the abrasive grains adhere to the surface of the rolling element, and its main size is 20 Between ~50μm,
The shape factor is about 30:1. Such abrasive particles are formed during the entire operation of the bearing. When the number is increased or a large number of spherical abrasive particles are present at the same time, it indicates that the rolling bearing has fatigue microscopic cracks and has caused spalling.
(7) Red oxide particles are Fe2O3 compounds. Shanghai to Nanyang Logistics Company can deposit in various parts of the spectrum. It has two types:
The red iron oxide particles generated by the water entering the lubrication system are polycrystalline, mainly granular, orange under white reflected light, and saturated orange under polarized light.
Due to poor lubrication, flat sliding wear abrasive grains formed by oxidative wear, Shanghai to Luoyang Logistics Company is grayish white under white reflected light, dim red brown under white transmission, and the iron spectrum does not change color after heating.
(8) Black oxide particles are produced due to poor lubrication or lack of oil. It is Fe3O4.
A mixture of Fe2O3 and FeO is a coarse-grained granular particle with tiny blue and orange-yellow spots. Http://news.chinawj.com.cn 
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