adhesive wear的意思|示意

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adhesive wear的用法详解

Adhesive wear (also referred to as scuffing, galling, cold welding, or seizure) is a form of wear caused by relative motion between two surfaces with insufficient lubrication, or a surface and a foreign body. This form of wear is commonly observed in engine bearings and piston rings assemblies due to an incorrect lubrication or the presence of a foreign particle.

Adhesive wear begins with the formation of a very thin layer of material, due to the contact between two surfaces. The material particles in this layer become further crushed during relative motion, which causes the two surfaces to stick together, resulting in a more severe form of wear. The wear rate increases as the amount of pressure between the two surfaces increases. This type of wear is especially common when higher loads are applied to the surfaces.

Adhesive wear can be prevented by using heat treatment, proper lubrication and selecting materials that are compatible with each other. The use of a lubricant can help to reduce the amount of friction between two surfaces, by establishing a lubricating film between them. A compatible material selection reduces the chances of foreign particles coming in contact with the surfaces and increasing friction.

Heat treatment increases the hardness of the surface material, which reduces its ability to be displaced. The use of heat treatment also increases the wear resistance of the material and reduces the risk of adhesive wear.

Depending on the application, the use of different surface treatments may be necessary. For example, for components that are subjected to heavy loads or friction, a coating such as diamond-like carbon (DLC) can be used to reduce friction and prevent adhesive wear.

In conclusion, adhesive wear occurs when there is relative motion between two surfaces, with insufficient lubrication or a foreign particle present. It can be prevented by using heat treatment, proper lubrication, and selecting compatible materials. Different surface treatments may also be used to reduce friction and prevent adhesive wear.