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Using Sticky Compensating Method to Repair Cavitation Borehole Cavitation
Engines with dry cylinder liners, such as cavitation pits (ie, honeycombed small pinholes) in the cylinder, not only cause cylinder bores to wear through, but can also affect dry cylinder liners, causing cavitation, resulting in cylinders. Leaking, the engine can't work. The conventional repair method for the cavitation erosion of the cylinder block is cast iron welding, that is, using a 308 mm diameter cast 308 pure nickel cored cast iron electrode, welding is performed under a welding current of 90 to 100 A, and then the bored hole is bored by a boring machine. Standard size. The specific method of the sticky complement method is as follows: Pull out the old cylinder liner with a special puller. At the honeycomb hole corrosion area of ​​the cylinder bore hole of the cylinder block, use a micro air-driven grinding wheel to flatten and polish to expose the new metal. surface. Then, first flush with acetone or gasoline, dry the area with acetylene gas flame, and then you can perform the replenishment work. Adhesion can be used when the following methods: Method one: Take the amount of mixed uniform agricultural machinery glue filling, smear in the pit erosion area (note that the amount should not be too much, otherwise it will make the cylinder liner deformation), and then press the new cylinder liner. Method 2: Mix 12-point or more cast iron powder with epoxy resin (in an amount of 10% to 20% of the weight of the resin), mix it thoroughly, and then apply it to the etched area.