Composite corpuscle nickel base alloy solution for manufacturing or repairing cylinder cover

Abstract

The invention relates to a composite particulate nickel-based alloy solution for manufacturing or repairing cylinder liners, and is mainly used for repairing the inner wall of existing railway, marine and high-power diesel engine cylinder liners after use and wear. The solution is mainly composed of the following raw materials in weight percentage: 3% ± 0.15% of silicon carbide with a particle size of 0.0007-0.004 mm, 0.004% ± 0.002% of thiourea, 2% ± 0.1% of nickel sulfate, 1.5% ± 0.075% of sodium hypophosphite %, sodium acetate 1.5%±0.075%, glycine 0.8%±0.04%, and the rest is deionized water. The solution of the invention can repair the inner wall of the cylinder liner after use and wear to restore the original size, continue to use, realize the remanufacturing of scrapped parts and improve the performance.

Description

technical field [0001] The invention relates to a nickel-based alloy solution of composite particles for manufacturing or repairing cylinder liners. 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 u...

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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