At present, there is no unified classification method for the wear of insulating glass production line, which can be summarized into two categories: one is the description of wear appearance according to wear results, such as pitting wear, gluing wear, scratch wear, etc; The other is divided into abrasive wear, adhesive wear, fatigue wear, corrosion wear and so on according to the friction mechanism.
1. Adhesive wear
Under the action of tangential force, the adsorption film and fouling film on the surface of friction pair are damaged, so that the contour peak of the surface is cold welded at each point of interaction. Due to relative movement, the material is transferred from one surface to another, forming adhesive wear. In this process, sometimes the material will adhere back to the original surface, reverse transfer, or separate from the adhered surface and become free particles. The greater the load is, the higher the surface temperature is, the more serious the adhesion phenomenon is. Serious adhesion wear will cause the moving pair to bite. Adhesion wear is a common form of wear between metal friction pairs.
2. Abrasive wear
Abrasive wear of insulating glass production line is the phenomenon that the free hard particles (such as dust or metal particles caused by wear) or hard contour peaks entering the friction brown surface from the outside, plough out many grooves on the surface of softer materials, resulting in material falling off, which is called abrasive wear. Abrasive wear is related to the hardness of friction pair materials and abrasive particles. Sometimes, it is more economical to choose cheaper materials and replace easily worn parts regularly.
3. Fatigue wear
Under the action of variable contact stress, if the stress exceeds the corresponding contact fatigue limit of the material, fatigue cracks will be formed on the surface of the friction pair or at a certain depth below the surface. With the expansion and interconnection of the cracks, metal particles will fall off from the working surface of the parts, resulting in pitting damage on the surface, that is, fatigue wear or fatigue pitting corrosion.
4. Corrosion and wear
The surface damage caused by chemical or electrochemical reaction between metal and surrounding medium (such as acid in air, lubricating oil, etc.) in the process of corrosive wear and friction of insulating glass production line is called corrosive wear. Oxidation wear is common, which is the wear phenomenon of repeatedly generating and grinding off the oxide film on the contact surface when the metal friction is attached to the oxidizing medium. In fact, it is a process of chemical oxidation and mechanical wear. The size of oxidation wear depends on the connection strength and oxidation rate of oxide film.
In addition to the above four wear types of basic insulating glass production line, some wear phenomena can be regarded as derivation or combination of basic wear types. The former is erosion wear and the latter is fretting wear.