According to the degree of rupture of the diesel generator cylinder and cylinder head, the repair method should be determined based on the degree of damage, the location of the damage, the situation of the working unit, and the equipment status. The commonly used repair methods are epoxy resin adhesive bonding, screw repair, plate repair, welding repair, and plugging agent plugging.

1. Epoxy adhesive bonding.

Epoxy bonding has advantages such as strong adhesion, small shrinkage, and fatigue resistance. At the same time, the process is simple, the operation is convenient, and the cost is low. Its biggest disadvantage is heat resistance and lack of impact resistance, and in the next maintenance, peeling may occur after boiling with hot alkaline water, requiring re bonding. Therefore, this method can be used to repair other parts of the cylinder block and cylinder head, such as the combustion chamber, valve seats, and other high temperature areas.

2. Screw filling.

This method is suitable for flat areas with low stress requirements and low requirements for cracks (generally below 50mm). The repair quality is good, but it is more time-consuming.

3. Plate filling and sealing method.

Cylinder block. If the force on the cylinder head is small, and if there are long cracks or holes, a patch plate should be used to seal around the broken part.

4. Welding repair method.

When cracks appear, welding methods are usually used to repair areas with high stress or temperature, as well as areas that are difficult to operate using the above methods.

5. Sealing method of sealing agent.

Generally speaking, a gel like liquid composed of water glass, inorganic coagulants, organic flocculants, inorganic fillers, and adhesives is suitable for blocking small cracks, sand holes, and other defects in cast iron or aluminum cylinders.

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