A balancing device for a multi-stage pump and a surface additive manufacturing method

By setting a laser cladding layer on the mating surface of the multi-stage pump balance device, the wear problem is solved, the hardness and wear resistance are improved, the service life is extended, and the manufacturing of low-cost high-tech products is realized.

CN110725812BActive Publication Date: 2025-01-14JIANGSU TEWEIKE TECH CO LTD
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Patent Information

Application Number
CN201910921758.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-09-27
Publication Date
2025-01-14
Estimated Expiration
2039-09-27

AI Technical Summary

Technical Problem

The mating surface of the multi-stage pump balance device has a large wear during use, resulting in a shortened service life. The existing spray welding and high-frequency quenching treatment methods are not ideal, and it is difficult to ensure hardness uniformity and bond strength.

Method used

A laser cladding layer is provided on the surface of the mating surface of the balance device, and an iron-based or nickel-based laser cladding layer is formed by laser additive manufacturing method to improve hardness and wear resistance, and ensure hardness uniformity and bonding strength.

Benefits of technology

It significantly improves the service life of the balance device and realizes the manufacturing of low-cost high-tech products. It combines the strength improvement, uniform hardness, and significantly enhances the wear and corrosion resistance. The service life of traditional products is usually half a year, while the service life of this method is two years. above.

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Abstract

The present invention discloses a balancing device for a multi-stage pump and a surface additive manufacturing method, wherein the balancing device comprises a balancing disk; the balancing disk comprises a cylindrical shaft barrel portion and a disc portion axially perpendicular to the shaft barrel portion; the shaft barrel portion and the disc portion are axially connected; the outer peripheral surface of the shaft barrel portion is a matching A surface; a matching B surface surrounding the matching A surface is relatively arranged in the outer clearance of the matching A surface; a circular matching C surface is arranged on the disc surface of the disc portion; a matching D surface parallel to and opposite to the matching C surface is arranged on the balancing device; and a laser cladding layer is laser clad on the matching A surface, the matching B surface, the matching C surface and the matching D surface. The present invention meets the working condition requirements of the surface of the balancing device parts through material changes and process changes, realizes various hardening, corrosion and wear resistance requirements of the surface of the stainless steel substrate, and realizes low-cost high-tech product manufacturing.
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Citation Information

Patent Citations

  • Balancing device for multistage pump

    CN211259153U