Track wear of tracked transport vehicles is a key factor affecting their service life and operating costs. The degree of wear is closely related to various factors, including the design and material of the track itself, as well as external conditions such as the use environment and operation methods. Specifically, it can be divided into the following categories:

1. Design and material of the track itself

Track material and manufacturing process

The hardness and toughness of the material directly affect wear resistance: For example, high manganese steel track plates, with high hardness (Brinell hardness up to 300-500HB) and strong impact resistance, have better wear resistance on hard roads than ordinary low-carbon steel; while the wear resistance of rubber tracks (used for light vehicles) depends on the rubber content and the proportion of additives (such as carbon black). Inferior rubber is prone to cracking and chipping.

Manufacturing process: The heat treatment process (such as quenching and tempering) of the track plate determines its surface hardness and internal toughness. Poor craftsmanship (such as uneven hardness and cracks) will lead to premature local wear or fracture.

Track structure design

Track plate shape: The height, spacing and angle of surface patterns (such as bumps and transverse ribs) will affect the wear rate. For example, deep-patterned tracks have strong grip in mud, but on hard roads (such as cement ground), the contact area between the pattern and the ground is small, the pressure per unit area is large, and wear is faster; shallow-patterned tracks are the opposite, with better wear resistance on hard roads but insufficient grip in complex terrain.

Track pitch and track link structure: Excessively large pitch (the connection distance between track plates) will increase the impact load during operation and accelerate the wear of track pins and pin holes; the lubrication state of the track link (such as whether it is oiled and the quality of grease) will also affect the friction loss between the pin and the hole.

2. Use environment and terrain conditions

Ground hardness and roughness

Hard and rough roads (such as gravel roads, mine rock surfaces) will cause strong friction and impact on the track plates, and the surface of the track plates is prone to being worn flat and the edges chipped; while the wear on soft roads (such as soil and grass) mainly comes from the "scraping" after the track plates are embedded in the soil, and the wear is relatively slow.

Sharp obstacles (such as tree roots and metal fragments) may directly scratch the track plates and even cause the track links to break, which is a type of "destructive wear".

Ground humidity and corrosiveness

In muddy or waterlogged environments, sediment will enter the pin holes and joints of the track links, forming "abrasive wear" (equivalent to adding sandpaper between friction surfaces), accelerating component loss.

In corrosive environments such as saline-alkali land and seaside, metal parts of the track are prone to rust, resulting in a decrease in material strength. Wear and rust promote each other, shortening the service life.

3. Operation method and load

Driving speed and steering frequency

At high speeds, the impact force between the track and the ground increases, especially on uneven roads, the "bouncing" of the track plates will aggravate local wear; while low-speed driving can reduce impact and slow down the wear rate.

Frequent steering (especially in-place steering) will cause severe sliding friction between the track and the ground, and the wear rate of the inner track plate is much higher than that in straight-line driving. For example, when a mine tracked vehicle turns frequently in a narrow site, the service life of the track plate may be shortened by more than 30%.

Load weight

Overloading will increase the pressure of the track on the ground, increasing the friction between the track plate and the ground. At the same time, the stress on load-bearing components such as track links and drive wheels will exceed the design range, leading to accelerated wear. For example, a tracked vehicle that is overloaded by 10% for a long time may have its track wear rate increased by 20%-30%.

4. Maintenance conditions

Track tension adjustment

Too loose track: It is prone to "slipping" and "derailment" during driving, and the poor meshing between the track link and the drive wheel and guide wheel will cause additional friction;

Too tight track: It will increase the internal tension of the track, leading to increased wear of track pins, pin holes and drive wheel teeth, and may also damage the suspension system.

Cleaning and lubrication

Failure to timely clean the sediment and gravel in the track gaps will cause continuous abrasive wear;

Lack of lubrication (or deterioration of grease) in moving parts such as track pins and connecting shafts will increase the friction coefficient, resulting in "dry friction", accelerating component wear and even jamming.

Component replacement and repair

If the track supporting components such as drive wheels, guide wheels and track rollers are worn (such as deformed wheel teeth and uneven surfaces), they will cause abnormal wear of the track; failure to replace these components in time will lead to a "vicious cycle" of track loss.

Summary

Track wear is the result of the combined action of multiple factors such as material, design, environment, operation and maintenance. Among them, ground hardness, operation frequency (especially steering), load and maintenance conditions are the variables with the greatest impact. Reasonable selection of track types (such as choosing steel tracks or rubber tracks according to the terrain), standardized operation (avoiding overloading and frequent sharp turns), and regular maintenance (cleaning, lubrication, adjusting tension) can significantly reduce the wear rate and extend the service life of the track.