(1) The smear only occurs on the shallow surface of the soft metal, and the thin layer of the soft metal that is being wounded is transferred to the surface of the hard metal by means of smearing, for example, after the worm is operated for a period of time, the copper smear on the surface of the worm On the surface of the worm.
(2) The scratching occurs in the shallower part of the surface of the soft metal surface. The damage is caused by small scratches along the moving direction, and sometimes scratches on the hard metal surface. The most common is the wear of the shaft and the plain bearing during the initial stage of the machine.
(3) Gluing (or avulsion) grinding occurs in the deeper part of one or both of the two parts rubbed together. Due to the high local temperature of the surface, the pressure is high, so that the bond strength of any matrix metal is sheared. Intensity, when the friction pair is relatively slid, the surface of the day is hit by a day and a day, causing avulsion damage, and a glue-like flaw is formed. Such as cam pair, worm pair, gear pair, is more common; the machine's skateboard and guide rails often cause such a wound when there is a lack of lubricating oil and dry friction.
(4) Killing When the frictional sub-surface flashes at a relatively high temperature, the adhesive area is large, and the strength of the adhesive point is also relatively high, the bond cannot be sheared off from the substrate, so that the relative motion is stopped. Killing is the most serious type of injury. For example, when the shaft and the sliding bearing appear to be poorly lubricated, the "hug shaft" will cause such a strain; the large-scale machine tool will cause seizure due to large-scale grinding caused by lack of oil on the guide rail.
3. adhesive wear type of injury research and prevention factors <br> <br> impact of such factors hurt a lot of research, we can take action against these factors, to prevent its emergence and development.
(1) Lubricating grease factor Lubrication state has a great influence on the adhesive wear type grinding damage, as long as the friction surface always maintains a sufficient strength lubricating film to avoid the direct contact surface of the metal between the friction surfaces to form dry friction or semi-dry friction. Effectively prevent and control the generation and development of adhesive wear type wounds. Among the various factors affecting such wounds, ensuring good lubrication of the friction surfaces is the most important factor. The addition of oily or viscosity additives to the lubricating oil can increase the adsorption capacity of the lubricating oil film and the strength of the oil film, which can double the ability to resist scratching.
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