Preparation method of cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance

A corrosion-resistant, crack-free technology, applied in coatings, metal material coating processes, etc., can solve problems such as easy cracking, and achieve the effect of reducing friction coefficient, reducing wear volume, and suppressing cracks.

Active Publication Date: 2021-04-13
浙江翰德圣智能再制造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a cobalt-based strengthened crack-free coating with excellent wear resistance and corrosion resistance in view of the defects existing in the prior art. , to suppress cracking by adding ductile alloy components

Method used

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  • Preparation method of cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance
  • Preparation method of cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance
  • Preparation method of cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance

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Embodiment 1

[0038] A method for preparing a cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance, comprising the following steps:

[0039] (1) the scale and oil stains on the surface of the duplex stainless steel substrate are removed;

[0040] (2) Weigh Stellite 6, Inconel 625, WC ceramic particles, three kinds of material powder;

[0041] (3) three kinds of powders are evenly mixed and dried;

[0042] (4) Set the process parameters and perform laser cladding on the surface of the duplex stainless steel substrate;

[0043] (5) Finishing.

[0044] Preferably, in step (1), the duplex stainless steel substrate is clamped on a milling machine, cleaned and air-dried with a cleaning agent, and milled off the surface oxide of the duplex stainless steel substrate to expose a bright and clean metal surface.

[0045] Preferably, in step (2), the cobalt-based composite powder is weighed with an electronic balance, and the three powders in the cobalt-ba...

Embodiment 2

[0054] A method for preparing a cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance, comprising the following steps:

[0055] (1) the scale and oil stains on the surface of the duplex stainless steel substrate are removed;

[0056] (2) Weigh Stellite 6, Inconel 625, WC ceramic particles, three kinds of material powder;

[0057] (3) three kinds of powders are evenly mixed and dried;

[0058] (4) Set the process parameters and perform laser cladding on the surface of the duplex stainless steel substrate;

[0059] (5) Finishing.

[0060] In this embodiment, in step (1), the duplex stainless steel substrate is clamped on a milling machine, cleaned and air-dried with a cleaning agent, and milled off the surface oxide skin of the duplex stainless steel substrate to expose a bright clean metal surface .

[0061] In the present embodiment, in step (2), the cobalt-based composite powder is weighed with an electronic balance, and the th...

Embodiment 3

[0070] A method for preparing a cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance, comprising the following steps:

[0071] (1) the scale and oil stains on the surface of the duplex stainless steel substrate are removed;

[0072] (2) Weigh Stellite 6, Inconel 625, WC ceramic particles, three kinds of material powder;

[0073] (3) three kinds of powders are evenly mixed and dried;

[0074] (4) Set the process parameters and perform laser cladding on the surface of the duplex stainless steel substrate;

[0075] (5) Finishing.

[0076] In this embodiment, in step (1), the duplex stainless steel substrate is clamped on a milling machine, cleaned and air-dried with a cleaning agent, and milled off the surface oxide skin of the duplex stainless steel substrate to expose a bright clean metal surface .

[0077] In the present embodiment, in step (2), the cobalt-based composite powder is weighed with an electronic balance, and the th...

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Abstract

The invention discloses a preparation method of a cobalt-based reinforced crack-free coating with excellent wear resistance and corrosion resistance. The preparation method comprises the following steps that (1) oxide skin and oil stain on the surface of a duplex stainless steel base material are removed; (2) three kinds of material powder, namely Stellite 6, Inconel 625 and WC ceramic particles are weighed; (3) the three kinds of powder are uniformly mixed and dried; (4) technological parameters are set, and laser cladding is conducted on the surface of the duplex stainless steel base material; (5) finish machining is conducted. The Stellite 6 widely applied to cobalt-based alloy is selected as a powder main body, the high-hardness WC ceramic particles are added as an enhancer, the nickel-based alloy Inconel 625 powder with excellent welding performance is added, and the coating is prepared by changing the proportion of composite powder and adjusting laser cladding process parameters. The preparation process is simple, the traditional procedures of base material preheating treatment and workpiece post-treatment can be omitted, the powder preparation cost can be reduced, and the problem that the cobalt-based ceramic particle composite powder cracks in large-area cladding in actual engineering application is solved.

Description

technical field [0001] The invention relates to the field of crack suppression of cobalt-based ceramic composite coatings, in particular to a method for preparing a cobalt-based strengthened crack-free coating with excellent wear resistance and corrosion resistance. Background technique [0002] Duplex stainless steel has the characteristics of both austenitic and ferritic stainless steel. Duplex stainless steel has excellent pitting corrosion resistance and can be widely used in oil refining, chemical fertilizer, papermaking, petroleum, chemical industry and other fields, as well as resistance to seawater, high temperature and concentrated nitric acid, etc. In heat exchangers and coolers and devices. Laser cladding is usually required on the surface of duplex stainless steel substrates to improve its chemical properties. WC ceramic particles and Stellite 6 are excellent materials for preparing reinforced coatings. WC ceramic particle is a material with high melting point (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/07C22C32/00
CPCC23C24/103C22C19/07C22C32/0052Y02P10/25
Inventor 史望兴迟长泰许泽林仲才
Owner 浙江翰德圣智能再制造技术有限公司
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