Smooth grease on the importance of strengthening fag needle roller one-way bearing appearance

Application of solid-state phase transformation, after a rapid heating to the outer surface of the parts to stop heat treatment quenching treatment called appearance, commonly known as quenching. Including flame heating quenching, high ( C) Frequency induction heating quenching, laser heating or electron beam heating quenching, etc. The characteristics of these methods are: the external heating quenching, workpiece deformation; Heating speed, consumption of high efficiency; Short heating time, surface oxidation decarburization is minimal. After mechanical method makes the metal surface plastic deformation, so as to constitute a high hardness and high strength of hardening layer, strengthening method is called the appearance deformation strengthening this kind of appearance, also known as work hardening. Including shot peening, sandblasting, cold extrusion, rolling, cold grinding and impact and explosion shock processing, etc. The characteristics of these methods are: strengthening layer increased dislocation density, the crystal structure refinement, so that the hardness and strength improvement, surface roughness value decreases, and significant progress parts appearance of fatigue strength and reduce fatigue notch sensitivity. The intensive way to craft simple, the effect is remarkable, hardening layer and the substrate, there is no obvious distinction between structural connection, not easy and in use. The most way has already been used in bearing industry: the appearance of the impact roller reinforcement is the application of this kind of way, fine has become a new ring rolling process and strengthening method. The evaporative (smooth fag bearing grease C) Said smooth fat during long-term use under condition of high temperature, smooth the fat level of volatile, evaporative as small as possible. The evaporative mainly depends on the nature of the smooth oil grease and fraction. Smooth lipid oxidation stability is to point to in long-term storage or long-term high temperature using the function of resist heat and oxygen, sticking to its nature can not attack for change. Often due to oxidation, seizure free alkali content reduced or free organic acid content increases, drop point landing, dark appearance, present different smell, consistency, ultimate strength, viscosity similar to land, and destroy smooth lipid structure generated corrosive substances, form black oil separation. In smooth fat storage for a long time, therefore, should be sent there are dry and ventilated environment, avoid sun exposure, and shall regularly check free base or free change of the project such as organic acid, corrosion resistance, to ensure its quality and performance. Check the fag bearing, don't let the needle roller one-way bearing exposure to pollutants or moisture environment. If work infix, should with oil film, paper or similar material by machine. If without disassembly and may perform inspection of cleaning without masking needle roller one-way bearing, to coating with brush with petroleum solvent ( 白酒) Cleaning and dry with a lint-free cloth or use a tightening air blow dry, Pay attention to don't let a fag bearing component starting rotation) 。 Do not clean the encrypted block or dust fag bearing; You just wipe its external appearance. If the needle roller one-way bearing is damaged when the need to change.