Method for repairing for surface-reinforcing cylinder cover by composite corpuscle nickel base alloy

Abstract

The invention relates to a method for using composite particle nickel base alloy to manufacture and repair cylinder jackets and is used to repair the inner wall of the cylinder jackets which are usedin railroad or ships and the cylinder jackets of large power diesel engines after abrasion due to use. The method comprises following steps: evenly coating composite particle nickel base alloy solution on the inner surface of the cylinder jackets, wherein the coating process comprises following steps: leading the composite particle nickel base alloy solution which comes out of a particle feeding device into a cylinder jacket which needs manufacturing to carry out chemical reaction, evenly coating carborundum particles in the solution on the inner surface of the cylinder jacket which needs manufacturing, then, leading the composite particle nickel base alloy solution into a condenser, rapidly cooling the composite particle nickel base alloy solution which is used from the working temperature of 80-82DEG C to 50DEG C, deactivating the solution, stopping the chemical reaction, pumping the composite particle nickel base alloy solution in a liquor mixing tank to mix liquid, then, sending the composite particle nickel base alloy solution to a heater, guiding the composite particle nickel base alloy solution into the particle feeding device after reaching the exit temperature of 82-83DEGC, adding the carborundum particles into the particle feeding device to prepare the composite particle nickel base alloy solution, and entering a following circulatory system. The inner wall of the cylinder jackets after abrasion due to use can be repaired to the original size through utilizing the method of the invention to be used continuously, which realizes the reproduction of faulty parts andincreases the performance.

Description

technical field [0001] The invention relates to a method for manufacturing or repairing a cylinder liner of a composite particle nickel base alloy. It is mainly used for repairing the inner wall of the existing railway, marine and high-power diesel engine cylinder liners after use and wear. It can also be used to coat the inner wall when manufacturing various high-power diesel engine cylinder liners to improve its performance. Background technique [0002] Existing railway, marine and high-power diesel engine cylinder liners, after use, the inner wall wears out, the power decreases, and the fuel consumption increases, so they are discarded. [0003] "Composite particle nickel-based alloy" is developed on the basis of widely used electroless nickel-based alloy coating. That is to say, high-hard ultra-fine silicon carbide particles are added to the original electroless nickel-based alloy coating, so that the hardness of the coating is higher, and the oil content is better un...

AI Technical Summary

Problems solved by technology

Any impurities in the solution, especially the presence of catalytically active particles will accelerate the decomposition of the solution, while the "composite particle nickel-based alloy" process is just the opposite. A large number of fine particles must be added to the solution, and the surface area of ​​the particles generally reaches 100,000 cm2 / liter, the loading capacity is more than 800 times that of the original process (the loading capacity refers to the surface area of ​​the solution corresponding to the unit volume of the coated workpiece as the loading capacity, and the unit is 100L / m 2 ), so the solution is quickly decomposed and scrapped and cannot work normally for a long time, so the coating can generally only be prepared in the laboratory and cannot be used in industrial applications.

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