Powder metallurgy bearings are made of metal powder and other anti-friction materials, powdered, sintered, shaped and oil-impregnated. They have a porous oil-bearing bearing structure. After moisturizing in hot oil, the pores are filled with lubricating oil. The tumbling suction effect and the conflict heat cause the metal and the oil to be heated and expanded, and the oil is squeezed out of the pores, and the conflicting surface of the mold guide sleeve is lubricated. After the bearing is cooled, the oil is sucked back into the pores.
According to different working conditions, the rolling bearing uses powder metallurgy bearings with different oil content. When the oil content is large, it can be used without compensation oil and low load; when the oil content is small, it can be used under heavy load and high speed; the graphite metallurgical bearing with graphite can improve the safety of the bearing due to the lubricity of graphite itself. Sex, its shortcoming is low strength; in the absence of corrosion, iron-based powder metallurgy bearings with low cost and high strength can be considered, but the hardness of the matching journal should be properly improved.
Powder metallurgy related products are mainly used in automobile occupation, equipment manufacturing, metal occupation, aerospace, military industry, instrumentation, hardware tools, electronic appliances and other fields of parts production and research, related materials, auxiliary materials, various types of powder Preparation equipment, sintering equipment production. Products include bearings, gears, carbide tools, molds, conflict products and more.
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