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Inspection and maintenance of cylinder barrel cracks

July 18, 2024
Inspection and maintenance of Cylinder Barrel cracks

In order to timely understand the condition of the cylinder body (made of cylinder barrel), it is usually necessary to conduct a hydrostatic pressure test to test for cracks. The specific method is to connect the cylinder head and cylinder block together, install the gasket, and then connect the front water outlet of the cylinder block to the outlet pipe joint of the hydraulic press. Then inject the specified pressure into the water jacket of the cylinder block and maintain this state for five minutes after injection is complete.
Cylinder Barrels
During this period, if there are small water droplets on the outer wall of the cylinder, it means there are cracks. In this case, it is necessary to repair the cracks. So, what methods can be used to maintain it? Generally speaking, there are three methods. One is the bonding method, which is mainly suitable for situations where the stress at the crack generation site is low and the temperature is within 100 ° C.
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When repairing cylinders in this way, the main adhesive material is epoxy resin. This is because this material has strong adhesion, minimal shrinkage, and good fatigue performance. When bonding with epoxy resin, the operation is very simple. However, when the temperature rises and the impact force is strong, it is recommended to use welding repair methods.
1
If the cracks in the cylinder block are more obvious, the stress at the location is relatively high, and the temperature is above 100 ℃, it is more suitable to repair them through welding. By welding repair, the quality of the repaired cylinder will be higher.
2
There is another repair method called blocking method, which is relatively new compared to the above two methods. Leak stopping agents are commonly used to repair cracks in cylinders (made of aluminum cylinder pipes). When repairing cylinder block cracks in practice, appropriate repair methods can be selected based on the specific damage situation.
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