Alloy material and laser cladding method

A technology of laser cladding and alloy materials, applied in the direction of metal material coating process, coating, etc., can solve problems such as poor weldability, affecting the performance and quality of wear-resistant layers, and prone to cracks.

Active Publication Date: 2021-07-13
NANJING HUIRUI PHOTOELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used alloy materials have poor weldability and are prone to cracks, which affect the performance and quality of the wear-resistant layer.

Method used

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  • Alloy material and laser cladding method
  • Alloy material and laser cladding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066]The alloy material in this embodiment includes 7% GH738 nickel-based alloy and 93% 800 cobalt-based alloy in terms of mass percentage.

[0067] The laser cladding method provided in this embodiment includes the following steps:

[0068] The blade shroud of the rotating blade of the turbine is provided, and the damping surface is the "Z-shaped" damping surface of the blade shroud. The material of the leaf shroud is a nickel-based precipitation-strengthened directionally solidified columnar superalloy.

[0069] Grinding the damping surface of the leaf crown and the 2mm area around the damping surface to remove scale, surface impurities, etc., and then cleaning and drying with acetone to obtain a cleaned leaf crown.

[0070] The cleaned blade crown is fixed at the installation position of the laser cladding equipment with a fixture, so that the tip of the cladding head of the laser cladding equipment can safely reach the damping surface of the prefabricated part.

[0071]...

Embodiment 2

[0082] The alloy material in this embodiment includes 10% GH625 nickel-based alloy and 90% 800 cobalt-based alloy in terms of mass percentage.

[0083] The laser cladding method provided in this embodiment includes the following steps:

[0084] The blade shroud of the rotating blade of the turbine is provided, and the damping surface is the "Z-shaped" damping surface of the blade shroud. The material of the leaf shroud is a nickel-based precipitation-strengthened directionally solidified columnar superalloy.

[0085] Grinding the damping surface of the leaf crown and the 2mm area around the damping surface to remove scale, surface impurities, etc., and then cleaning and drying with acetone to obtain a cleaned leaf crown.

[0086] The cleaned blade crown is fixed at the installation position of the laser cladding equipment with a fixture, so that the tip of the cladding head of the laser cladding equipment can safely reach the damping surface of the prefabricated part.

[008...

Embodiment 3

[0095] The alloy material in this embodiment includes 8% GH738 nickel-based alloy and 92% 800 cobalt-based alloy in terms of mass percentage.

[0096] The laser cladding method provided in this embodiment includes the following steps:

[0097] The blade shroud of the rotating blade of the turbine is provided, and the damping surface is the "Z-shaped" damping surface of the blade shroud. The material of the leaf shroud is a nickel-based precipitation-strengthened directionally solidified columnar superalloy.

[0098] Grinding the damping surface of the leaf crown and the 2mm area around the damping surface to remove scale, surface impurities, etc., and then cleaning and drying with acetone to obtain a cleaned leaf crown.

[0099] The cleaned blade crown is fixed at the installation position of the laser cladding equipment with a fixture, so that the tip of the cladding head of the laser cladding equipment can safely reach the damping surface of the prefabricated part.

[0100...

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Abstract

The invention discloses an alloy material and a laser cladding method, relates to the technical field of laser cladding, and aims to improve the welding performance of the alloy material, prevent a wear-resistant layer from cracking and improve the performance and quality of the wear-resistant layer. The alloy material comprises a cobalt-based alloy material and a nickel-based alloy material, wherein the alloy material comprises the following components in percentage by mass: 7-10% of the nickel-based alloy material and the balance of the cobalt-based alloy material. The laser cladding method comprises the following steps: providing a prefabricated part, wherein the prefabricated part is provided with a damping surface; According to the technical scheme, the alloy material serves as a cladding material, laser cladding equipment is used for conducting cladding operation on the damping surface in the extending direction of the damping surface, and the wear-resistant layer formed on the damping surface is obtained. The wear-resistant layer comprises at least one cladding layer, and each cladding layer is composed of N melting channels. The alloy material provided by the invention is used for forming the wear-resistant layer.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to an alloy material and a laser cladding method. Background technique [0002] Turbine rotor blades are the key components of the engine, and the contact surface between turbine rotor blades is the damping surface of the blade shroud. During use, they collide and rub against each other, causing wear and tear, which increases the gap between the blade crowns. Under the action of high-temperature and high-pressure gas, the bending moment of the blade root increases, causing cracks at the blade root, which leads to blade fracture accidents. [0003] In the prior art, in order to improve the service life of the blade, argon arc surfacing is used, and an alloy material is surfacing on the damping surface of the blade shroud to form a wear-resistant layer. However, the currently used alloy materials have poor weldability and are prone to cracks, which affect the performance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/07
CPCC23C24/103C22C19/07
Inventor 鲁双伟黎作瑜阳义齐欢
Owner NANJING HUIRUI PHOTOELECTRIC TECH CO LTD
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