Talking about the relationship between the function of the bearing and the material
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Talking about the relationship between the function of the bearing and the material
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In addition to the above steel grades; according to the unique use; also use high-speed steel with excellent heat resistance; stainless steel with good corrosion resistance.
Cage material: material for stamping cage; low carbon steel. Different depending on the application; also used brass plate, stainless steel plate. Material for cutting cage; using high-strength brass, carbon steel; Apply differentiation resin.
Ferrule and roll material: ferrule and roll body are generally made of high carbon chromium bearing steel. Most of the bearings; use JJ steel type SUJ2. Large bearings use SUJ3.
The chemical composition of SUJ2; in the world; as a bearing material has been standardized. For example: with AISL52100 (United States), DIN100Cr6 (West Germany), BS535A99 (UK) are the same kind of steel.
Further need to withstand impact; use chrome steel, chrome molybdenum steel, nickel chrome molybdenum steel as bearing material, adopt carburizing and quenching; make steel have a softening layer from the surface to the proper depth. With proper softening depth and fineness Arrangement, suitable for hardness surface and core hardness of the carburized bearing; better bearing impact than bearing steel bearing; a chemical component of another carburized bearing steel.
The function sought by the cage material: good dimensional stability, high mechanical strength, NSK has implemented vacuum degassing; therefore; the materials used have high purity, low oxygen content and good quality. The appropriate heat treatment is adopted; The tumbling fatigue life progressed significantly.
The function sought by the ferrule and the tumbling material: tumbling the ferrule and the tumbling body of the high-hardness, high-wear and high-floating rolling bearing; one side repeatedly suffers from high touch pressure; one side carries the tumbling touch accompanied by sliding. Therefore; The ferrule; the material, function and important requirements of the roll and cage are as follows: the retainer; one side with the ferrule and the roll body; or one of the sides sliding touch; one side is subjected to tension and shortening force.
In addition, it also needs good processability. It is different according to the application; it is also required to have good impact resistance, heat resistance and corrosion resistance.
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Potassium Phosphate is an inorganic compound. Its chemical formula is K3PO4, also known as Tripotassium Phosphate. It is crystallized in a colorless or white orthorhombic system at room temperature and atmospheric pressure. There are hydrates, heptahydrates and nine hydrates. The common ones are anhydrous and deliquescent. Its relative molecular weight is 212.27, its relative density is 2.564 (17 C), its melting point is 1380 C, and it is soluble in water. Water is insoluble in ethanol.
CAS Number: 7778-53-2
EINECS Number: 240-213-8
Chemical formula: K3PO4
Molecular weight: 212.27
Physical properties: colorless trapezoid crystal or white clean powder.
Relative density: 2564
Melting point: 1380 C
Solubility: soluble in water, insoluble in ethanol, alkaline in water solution, strong corrosive and strong hygroscopicity.
Potassium Phosphate Uses: Used for liquid soap, refined gasoline, high-quality paper, phosphorus and potassium fertilizer, boiler water softener, medicine, base fertilizer and topdressing fertilizer.
Potassium Phosphate
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