We have seen that there are numerous reasons behind the failure of hydraulic components. Well, we can prevent them with proper precautionary practices. Also, we need to understand some important points that are very common. There are three parts of a hydraulic system or a hydraulic tube or hose. The first one is the inner lining, the second one is the outer lining, and the third one refers to the O-rings. These are made up of different layers and thus, we need to choose a fluid that is suitable for all three.
So, let’s have a glance at the eight ways why your hydraulic components wear out.
So, here we go;
1. Fluid Compatibility
External leakage & system contamination can result in fluid compatibility issues. If the fluid is incompatible, it can cause the inner layer of the hydraulic hose to delaminate, swell, & deteriorate. This can also result in the partial wash out of the tube. So, we need to be careful when working with the fluid. We should always go for the fluid that is compatible with the tube. We can check this by looking at the inner lining of the tube, O-rings, and the outer covering of the hose. This will help us to choose the right fluid that is compatible with all the three types of material of the tube.
2. Adhesive Damage
This is the most common form of damage caused in this field. As the word itself represents the adhesion means the sticking of two surfaces together via some other material. However, here we are talking about the two surfaces that scuff each other and after some time they began to lose their adhesiveness. This occurs due to less usage of the adhesive material.
3. Abrasive Wear and Tear
This is also a form of the destruction of the adhesive surfaces. This is an additional form of adhesive damage. Abrasive wear and tear are subdivided into two categories, that is, two-body abrasion & three-body abrasion. When the two surfaces touch each other, this can lead to the loss of the layer of lubricating oil, then the two-body abrasion occurs. On the other hand, when the two layers are separated by the third layer of an unknown particle, then this third-body abrasion takes place.
4. Corrosive Wear
This occurs due to the loss of surface material due to some chemical reactions. Let’s take an example, this example is very simple to understand and that is the rusting process. Rusting of ferrous metals is very common and leads to corrosion. If somehow, the hydraulic oil is degraded by heat or water, acids (chemical by-products) can attack this type of metals. Most sensitive metals that are easy victims of this corrosion process are the yellowish-brown metals or the bronzes. They can undergo chemical attack easily in the presence of water.
5. Cavitation Wear
This is another factor that is responsible for the deterioration of the hydraulic components. As the name suggests, the cavity means void or free space. When the formation of oil-bubbles takes place in the pump-inlet and later on these oil-bubbles are compressed under pressure in the pipe-outlet then this process is known as cavitation wear. During this compression process, the formation of micro-jet takes place and this can erode the case-hardened steel. So, if this happens, then it can lead to erosion & metal loss.
6. Dry/ Aged Air
Some cracks can be found in the inner tube of hoses. This is due to the dry or aged air. This kind of failure is very difficult to spot since the outer layer remains flexible. However, when these levels up the cracks then we can see the external leakage. We can prevent this by choosing the hose that is meant for the extremely dry air.
7. Fatigue Wear
This only occurs in the lubricated heavy-loaded contacts, mainly gears and bearings. Point loading is the thing that is quite important in terms of fatigue wear. This can be a cause of elastic deformation of the surface of the component. The stress concentration leads to the cracking & spalling of the surface.
8. Erosive Damage
Erosion occurs when the fluid consists of a large number of hard particles (approximately silt-sized). These flow with a high velocity thus eroding the inner edge of the hose. This completely damages the inner hydraulic system. Hence, we need to prevent it from these hard particles.
In conclusion, this is the whole scenario of the hydraulic system. These are the eight reasons for the wear and tear of the hydraulic hose. We can prevent hydraulic components by taking some precautions. Therefore, different reasons are described, and hence, we need to take care of all of the preventions. There is an old and genuine saying, ‘Prevention is Better than Cure’. So, always try to prevent rather than deteriorating it and then curling it.