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Application of laser cladding nickel based alloy in hydraulic pump plunger
Date:2025-12-08 14:56     Source:daokedao     Browse:7

The hydraulic pump plunger is subject to high-pressure oil flushing and friction, and the traditional quenched plunger has a service life of only 3-6 months, which is prone to wear and leakage. The Daokedao automated laser cladding equipment uses Ni-Cr-B-Si nickel based alloy powder to deposit a 1.5mm wear-resistant layer on the surface of the plunger. The hardness of the cladding layer is HRC55-60, the surface roughness is Ra ≤ 0.1 μ m, the wear resistance is 5 times higher than that of the quenched plug, and the sealing performance is excellent. According to the application of a certain construction machinery enterprise, the service life of the plunger after melting has been extended to 18 months, the leakage failure rate of the hydraulic pump has been reduced from 10% to 0.5%, and the annual maintenance cost of a single hydraulic pump has been saved by more than 8000 yuan. The precision melting technology of the cylindrical surface of the equipment ensures the dimensional accuracy of the plunger.

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