Using IKO one-way bearing surface strengthening treatment technology should be paid attention to

In some special operating conditions, IKO bearings can get more than the life of the traditional computing, especially in the case of light load. These special operating conditions is, when the rolling surface ( Track and rolling piece) Can be separated by a lubricating oil film effectively and the surface of the limit of pollutants may cause damage. In fact, under ideal conditions, the so-called permanent one-way bearing life is possible. The life of rolling bearing with revolution ( Or in the hours of work under a certain speed) Definition: within the life of the one-way bearing, should be in any of its bearing ring or rolling on initial fatigue damage ( Flake or defect) 。 Whatever the test in the laboratory or in actual use, can be clearly seen, under the same working conditions, the appearance of the same bearing the actual life. And there are several different definitions of IKO bearing 'life', one of which is known as the 'service life', it represents a certain bearing before damage to the actual life is by the wear and tear, damage usually is not caused by fatigue, but due to abrasion, corrosion, damage to the seal, and so on. By mechanical method of plastic deformation in the metal surface, so as to form a hardening layer with high hardness and high strength, this kind of surface strengthening method called surface deformation strengthening, also known as work hardening. Including shot peening, sandblasting, cold extrusion, rolling, cold grinding and impact and explosion shock processing, etc. IKO bearing the characteristics of these methods are: strengthening layer increased dislocation density, the crystal structure refinement, so that the hardness and strength increased, the surface roughness value decreases, and can significantly improve the surface fatigue strength of parts and reduce fatigue notch sensitivity. This improved method craft simple, the effect significantly, there is no obvious boundaries between hardening layer and matrix, the coherent structure and not easy to fall off in use. Its most method has been applied in the bearing industry: roller surface strengthening is the application of this kind of method, precision rolling has become a new ring processing and strengthening method. Using solid-state phase transformation, surface layer of parts by using the method of rapid heating treatment called surface quenching heat treatment, commonly known as surface hardening. Including flame heating quenching, high ( C) Frequency induction heating quenching, laser heating or electron beam heating quenching, etc. One-way bearing the characteristics of these methods are: local heating surface quenching, workpiece deformation; Heating speed, high production efficiency; Short heating time, the surface oxidation decarburization is very slight. Especially to improve the method under a certain impact load of large and super large bearing parts abrasion resistance and fatigue strength effect significantly. Using an element of solid state diffusion infiltration, to change the chemical composition of the metal surface, IKO bearings to achieve surface strengthening method called chemical heat treatment to strengthen, also known as diffusion heat treatment. Includes boronizing, metallic cementation, carburizing and carbonitriding, nitriding carbon and nitrogen altogether permeability, ooze sulfur and sulfur nitrogen carbon altogether permeability, chromizing, aluminized and chrome aluminum silicon, graphitization permeability layer and so on, variety and characteristics of each different. Infiltration of elements into matrix metal forming solid solution, or with other metal elements combine to form compounds. Anyhow into elements that can change the surface chemical composition, and can get different phase structure. Carburizing bearing steel parts processing technology and a one-way bearing sleeve of nitriding surface strengthening treatment of this kind of reinforcement method. Use of workpiece surface layer of metal melting and solidification, again to get the desired composition or organizational surface strengthening treatment technology, called surface metallurgy strengthening. Including surface autolyzed alloy or composite powder coating, surface melting crystalline or amorphous processing, such as the surface alloying method. IKO bearing is characterized by rapid heating using high energy density, the metal surface layer or coating on metal surface alloying material melt, followed by their cooling for special structure or specific performance of strengthened layer. This special structure may be refine crystal organization, also perhaps is supersaturated and metastable phase, even amorphous organization, depending on the process parameters and methods of surface metallurgy. Rolling bearing industry working in the miniature bearing surface laser heating processing research, the result is good. Physical or chemical method, bearing on the metal surface coating on substrate materials performance of different strengthening layer, called the surface film. It includes electroplating, electroless plating, Chrome plating, nickel plating, copper plating, silver plating, etc. ) And composite brush plating, plating or conversion process, including in recent years the rapid development of high and new technology, such as CVD, PVD, P - CVD such as vapor deposition film strengthening method and ion implantation surface strengthening technology ( Also known as atomic metallurgy technology) And so on. Their common characteristic is can in the work surface to form a specific performance of the film, to strengthen the surface wear resistance, fatigue resistance, corrosion resistance and self-lubricating properties. Ion implantation technology to strengthen the IKO bearing working surface, for example, can make the bearing working surface wear resistance, corrosion resistance, and resistance to contact fatigue performance have been significantly improved, so that the service life of the one-way bearing get growing exponentially.