How to solve the wear of the hollow glass production line? Currently, there is no unified classification method for the wear of hollow glass production lines, which can generally be summarized into two categories: one is the description of the wear appearance based on the wear results, such as pitting wear, adhesive wear, and abrasion wear; the other is based on the friction mechanism, divided into abrasive wear, adhesive wear, fatigue wear, and corrosive wear.

1. Adhesive wear of the hollow glass production line occurs under the action of tangential force, where the adsorbed film and contamination film on the surface of the friction pair are destroyed, causing cold welding at various points of interaction on the surface profile peaks. Due to relative motion, material transfers from one surface to another, forming adhesive wear. In this process, sometimes materials may reattach to the original surface, resulting in reverse transfer, or detach from the adhered surface and become free particles. The greater the load and the higher the surface temperature, the more severe the adhesive phenomenon. Severe adhesive wear can cause the moving pair to seize. Adhesive wear is the most common form of wear between metal friction pairs.

To reduce adhesive wear, the following measures can be taken: ① Reasonably select paired materials. The same type of metal is more prone to adhesion than different types; brittle materials have stronger anti-adhesion capabilities than plastic materials. Surface treatments (such as surface heat treatment, electroplating, spraying, etc.) can prevent adhesive wear. ② Limit the temperature of the friction surface. ⑤ Use lubricants containing oiliness and extreme pressure additives. ④ Control the pressure.

2. Abrasive wear of the hollow glass production line occurs when free hard particles (such as dust or metal particles caused by wear) or hard profile peaks enter the contact surface, plowing many grooves on the surface of softer materials, leading to material detachment, which is called abrasive wear. Abrasive wear is related to the hardness of the friction pair materials and the hardness of the abrasive particles. Sometimes, selecting cheaper materials and regularly replacing easily worn parts is more in line with economic principles.

3. Fatigue wear of the hollow glass production line occurs under variable contact stress. If this stress exceeds the corresponding contact fatigue limit of the material, fatigue cracks will form at the surface of the friction pair or at a certain depth below the surface. As the cracks expand and connect, metal particles will detach from the working surface of the parts, leading to a pitting damage phenomenon on the surface, known as fatigue wear or fatigue pitting.

To improve the fatigue life of the component surfaces, in addition to reasonably selecting friction pair materials, attention should also be paid to: ① Reasonably select the surface roughness of the contact surfaces of the parts. Generally, the smaller the surface roughness value, the longer the fatigue life. ② Reasonably select the viscosity of the lubricating oil. Low-viscosity oil is prone to penetrate cracks, accelerating crack propagation. High-viscosity lubricating oil is beneficial for uniform distribution of contact stress, improving resistance to fatigue wear. Adding extreme pressure additives or solid lubricants to the lubricating oil can enhance the fatigue resistance of the contact surfaces. ③ Reasonably select the hardness of the contact surfaces of the parts. Taking bearing steel as an example, when the hardness is 62HRc, the resistance to fatigue wear is the highest; increasing or decreasing the surface hardness significantly reduces the lifespan.

4. Corrosive wear of the hollow glass production line refers to the surface damage caused by chemical or electrochemical reactions between metals and surrounding media (such as acids in the air, lubricating oils, etc.) during the friction process, known as corrosive wear. Among them, oxidative wear is the most common, which occurs when metal friction pairs work in oxidative media, repeatedly generating and wearing away the oxide film on the contact surface. In fact, it is a process where chemical oxidation and mechanical wear occur successively. The extent of oxidative wear depends on the bonding strength and oxidation rate of the oxide film.

In addition to the four basic types of wear in hollow glass production lines mentioned above, there are also some wear phenomena that can be considered as derivatives or composites of the basic wear types. The former includes erosive wear, while the latter includes fretting wear.