Preparation method for metal-doped modified turbine blade laser cladding surface coating layer

A laser cladding and turbine blade technology, applied in metal material coating process, coating and other directions, can solve the problems of matching between repair layer and substrate, high production cost, poor technical practicability, etc.
CN109778184APending Publication Date: 2019-05-21XIAN UNVERSITY OF ARTS & SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN UNVERSITY OF ARTS & SCI
Publication Date
2019-05-21

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Abstract

The invention discloses a preparation method for a metal-doped modified turbine blade laser cladding surface coating layer. The preparation method comprises the following steps of performing cleaningpretreatment on a 17-4PH stainless steel blade matrix material; doping Mo powder into 17-4PH powder, performing full and uniform mixing in a ball mill, performing heating and drying in a drying furnace, and taking the dried powder as laser cladding composite powder for standby; under the argon condition, adopting a laser cladding process to enable the laser cladding composite powder to clad on thepretreated 17-4PH stainless steel blade matrix; and performing microscopic structure analysis and performance detection on a coating layer. The coating layer is high in hardness, excellent in corrosion resistance and good in structural stability; and through metallurgical bonding with the matrix, the coating layer is reasonable in cost and can better meet the service requirements of turbine powermechanical engineering.
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Description

technical field

[0001] The invention belongs to the technical field of surface engineering, and in particular relates to a method for designing and preparing a corrosion-resistant and wear-resistant coating on the surface of martensitic stainless steel laser cladding for metal-doped modified 17-4PH blades. A new surface protection material application technology in the manufacturing field. Background technique

[0002] With the vigorous development of circular economy, blast furnace energy recovery turbine (TRT for short) has been widely used in my country's metallurgical field, effectively reducing industrial waste gas emissions and achieving good economic and social benefits. The long-term safe operation of such turbines is the key to the continuous energy recovery of the blast furnace. Among them, the TRT blade is the core component of the blast furnace energy recovery turbine equipment, and its safety and reliability directly affect the long-term operation of the unit. ...

Claims

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