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A laser cladding method

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

Active Publication Date: 2022-08-05
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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  • A laser cladding method
  • A laser cladding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0068] Provides the shroud of the turbine rotating blade, and the damping surface is the "Z-shaped" damping surface of the shroud. The material of the blade crown is a nickel-based precipitation-strengthened directional solidification columnar superalloy.

[0069] The damping surface of the leaf crown and the 2 mm range around the damping surface were polished to remove oxide scale, surface debris, etc., and then washed with acetone and dried to obtain a cleaned leaf crown.

[0070] Fix the cleaned leaf crown 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 preform.

[0071] According to the mass ...

Embodiment 2

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

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

[0084] Provides the shroud of the turbine rotating blade, and the damping surface is the "Z-shaped" damping surface of the shroud. The material of the blade crown is a nickel-based precipitation-strengthened directional solidification columnar superalloy.

[0085] The damping surface of the leaf crown and the 2 mm range around the damping surface were polished to remove oxide scale, surface debris, etc., and then washed with acetone and dried to obtain a cleaned leaf crown.

[0086] Fix the cleaned leaf crown 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 preform.

[0087] According to the mas...

Embodiment 3

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

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

[0097] Provides the shroud of the turbine rotating blade, and the damping surface is the "Z-shaped" damping surface of the shroud. The material of the blade crown is a nickel-based precipitation-strengthened directional solidification columnar superalloy.

[0098] The damping surface of the leaf crown and the 2 mm range around the damping surface were polished to remove oxide scale, surface debris, etc., and then washed with acetone and dried to obtain a cleaned leaf crown.

[0099] Fix the cleaned leaf crown 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 preform.

[0100] According to the mass...

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Abstract

The invention discloses a laser cladding method, which relates to the technical field of laser cladding, so as to improve the welding performance of alloy materials, crack the wear-resistant layer, and improve the performance and quality of the wear-resistant layer. The alloy materials include cobalt-based alloy materials and nickel-based alloy materials. Among them, in terms of mass percentage, the alloy material includes 7% to 10% of nickel-based alloy material, and the rest is cobalt-based alloy material. The laser cladding method includes: providing a preform having a damping surface. Using the alloy material proposed in the above technical solution as the cladding material, laser cladding equipment is used to carry out the cladding operation on the damping surface along the extending direction of the damping surface to obtain a wear-resistant layer formed on the damping surface. The wear-resistant layer includes at least one cladding layer, and each cladding layer is composed of N melt channels. The alloy material provided by the present invention is used to form a wear-resistant layer.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a laser cladding method. Background technique [0002] The turbine rotor blades are the key components of the engine, and the contact surface between the turbine rotor blades is the damping surface of the blade crown. In the process of 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 root of the blade, resulting in 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 crown to form a wear-resistant layer. However, the existing alloy materials have poor weldability and are prone to cracks, which affect the performance and qualit...

Claims

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Application Information

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Patent Type & Authority Patents(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