Method for preparing reignition turbine first-stage work bladetip wear-resistant coating

A wear-resistant coating and blade technology, applied in the direction of coating, metal material coating process, etc., can solve the problems of matrix cracks, the influence of the safety and life of turbine working blades, and no research reports, and achieve a large coating thickness. , The effect of many hard reinforcing phases and high bonding strength
CN101705487AInactive Publication Date: 2010-05-12SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
Publication Date
2010-05-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a reignition turbine first-stage work bladetip wear-resistant coating, which comprises the following steps of: (1) scanning the edge of the end face of the bladetip by using an infrared scanning device of laser coating equipment to enable a scanning track program control program to record the position of a scanned point; and (2) starting a laser generator of the laser coating equipment, transferring alloy powder to the end face of the bladetip under the protection of inert gases, and melting the alloy powder with laser beams. The matrix material of the reignition turbine first-stage work blade is a nickel-based cast high-temperature alloy K488 and the alloy powder is Co-based self-fusing alloy powder. The method for preparing the coating improves the high-temperature wear resistance of the coating, also improves automatic control level and production efficiency of the coating preparation and guarantees the stability of the quality of the product.
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Description

technical field

[0001] The invention relates to a method for preparing a coating of a turbine blade, in particular to a method for preparing a wear-resistant coating for a first-stage working blade of a reburning turbine. Background technique

[0002] As the operating conditions of aero-engines and gas turbines become more and more severe, the requirements for performance are getting higher and higher. Therefore, special coating materials and preparation technologies have become one of the key technologies in the manufacture of modern aero-engines and gas turbines. Coatings are mainly divided into thermal barrier coatings, wear-resistant coatings, sealing coatings, erosion-resistant coatings, and dimension repair coatings, among which wear-resistant coatings require higher hardness and lower coefficient of friction.

[0003] The service life of heavy-duty gas turbines is long, and the service life of the first-stage turbine blades with large size and complex structure is req...

Claims

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