Grinding Balls Wear Failure Related Factors

- Feb 10, 2018 -

Wear - The material on the surface of the object is gradually lost due to the mechanical action. Wear failure - mechanical products due to wear and tear due to loss of function. Grinding Balls wear accounts for more than 50% of the total wear loss. The so-called abrasive wear: the hard particles or protrusions that enter the friction surface from the outside are plowed a lot of grooves on the surface of the soft material, resulting in a kind of wear phenomenon caused by material migration. Grinding Balls analysis of the wear mechanism must be based on the wear and tear of the external parts of the environment and Grinding Balls inherent characteristics of two considerations.

Mechanical wear external conditions: a hardness, strength, speed, angle, temperature, humidity, particle size and other aspects.

1, the hardness of the abrasive: Among the many characteristics of wear, the material hardness of the most important.

2, intensity; here specifically refers to the pressure on the abrasive material. As the wear pressure increases, the amount of wear increases. As the penetration depth of Grinding Balls increases with the increase of pressure, the energy of cutting deformation on the material surface increases.

4, point of view: erosion wear impact angle Grinding Balls wear is very large. Impact angles have different effects on Grinding Balls' brittle and ductile materials. For brittle materials such as ceramics, the amount of wear increased with increasing angle, maximizing the amount of wear at vertical impact near 90 °, indicating that Grinding Balls brittle materials are not suitable for use in high angle erosion conditions; for The ductile material, the amount of wear increases first with the impact angle increases, reaching a maximum angle at a certain point, followed by the Grinding Balls impact angle increases with the wear and tear decreased. This indicates that the ductile material is prone to wear and tear when working in low angle conditions, while giving full play to its wear resistance at high angles. This is due to the lower hardness of the ductile material, which is most favorable for the surface to be cut by the abrasive grains at low angle erosion, and the amount of wear increases, whereas the brittle material is the most susceptible to spalling on the surface of the material during vertical impact.