Method for steel rail surface treatment by laminar plasma

A laminar flow plasma and surface treatment technology, applied in the direction of coating, metal material coating process, fusion spraying, etc., to achieve the effect of improving service life, low friction, and improving life

Inactive Publication Date: 2017-05-10
四川金虹等离子技术有限公司
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the past two hundred years, the surface strengthening and repairing of rails, hubs, turnouts, locomotive bearings, wheels, axles and other related track components has always been a hot spot in the world. However, due to its high performance, high melting point and unique use characteristics , traditional technologies and emerging technologies in recent decades cannot be used for surface repair and strengthening
The world's major industrial powers, such as the United States, Russia, Germany, Russia and other countries, invest a lot of manpower and material resources in the research of railway remanufacturing technology every year, but still have not fundamentally solved this problem. For now, Russia has made some progress in the application of traditional plasma-enhanced wheels, and the United States and China Railway Research Institute have also made partial application progress in laser-enhanced track surfaces, but in terms of fundamental practical applications, this is still an unbroken world problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] As a preferred embodiment of the present invention, this embodiment discloses:

[0032] A method for surface treatment of rails using laminar plasma, comprising the steps of:

[0033] Rail surface pretreatment step: use mechanical treatment or chemical treatment on the surface of the rail to remove rust and oil on the surface;

[0034] Preheating treatment step: using a non-transferred arc laminar plasma generator as a heat source to preheat the surface of the rail;

[0035] Rail surface cladding steps: using a non-transferred arc laminar plasma generator as a heat source, the non-transferred arc laminar plasma generator moves relatively parallel to the longitudinal axis of the rail at a constant speed, and the wire feeding device moves along the non-transferred arc laminar plasma generator The powder is fed in the central axis, and the composite powder is sprayed to the surface of the rail, and after being sprayed and clad by a non-transferred arc laminar flow plasma ...

Embodiment 2

[0040] As another preferred embodiment of the present invention, this embodiment discloses:

[0041] A method for surface treatment of rails using laminar plasma, comprising the steps of:

[0042] Rail surface pretreatment step: use mechanical treatment or chemical treatment on the surface of the rail to remove rust and oil on the surface;

[0043] Preheating treatment step: using a non-transferred arc laminar plasma generator as a heat source to preheat the surface of the rail;

[0044] Rail surface cladding steps: using a non-transferred arc laminar plasma generator as a heat source, the non-transferred arc laminar plasma generator moves relatively parallel to the longitudinal axis of the rail at a constant speed, and the wire feeding device moves along the non-transferred arc laminar plasma generator The powder is fed in the central axis, and the composite powder is sprayed to the surface of the rail, and after being sprayed and clad by a non-transferred arc laminar flow p...

Embodiment 3

[0051] As another preferred embodiment of the present invention, this embodiment discloses:

[0052] A method for surface treatment of rails using laminar plasma, comprising the steps of:

[0053] Rail surface pretreatment step: use mechanical treatment or chemical treatment on the surface of the rail to remove rust and oil on the surface;

[0054] Preheating treatment step: using a non-transferred arc laminar plasma generator as a heat source to preheat the surface of the rail;

[0055] Rail surface cladding steps: using a non-transferred arc laminar plasma generator as a heat source, the non-transferred arc laminar plasma generator moves relatively parallel to the longitudinal axis of the rail at a constant speed, and the wire feeding device moves along the non-transferred arc laminar plasma generator The powder is fed in the central axis, and the composite powder is sprayed to the surface of the rail, and after being sprayed and clad by a non-transferred arc laminar flow p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for steel rail surface treatment by laminar plasma, and relates to the technical field of steel rail remanufacturing treatment. The method adopts a non-transfer arc laminar plasma generator as a heat source; the non-transfer arc laminar plasma generator moves relatively in parallel at constant speed along the longitudinal axis of a steel rail; a wire and powder feeding device axially feeds powder along the center of the non-transfer arc laminar plasma generator to spray composite powder to the surface of the steel rail; and a cladding layer is formed after injection cladding by the non-transfer arc laminar plasma generator. The method adopts laminar arc plasma beam remanufacturing system equipment to perform the heat surface reinforcement treatment for rail junctions, steel rails, wheels and other rail vehicle parts; and treated materials are more obvious in surface hardness reinforcing effect, and greatly improve the wear resistance.

Description

technical field [0001] The invention relates to the technical field of rail rebuilding treatment, in particular to a method for using laminar flow plasma to treat the surface of the rail. Background technique [0002] With the high-speed and heavy-duty rail transit in my country, the operating conditions of railways are becoming increasingly harsh, which makes the stress state of railways and their accessories and rail locomotive parts worse, accelerates the failure rate, and shortens the service life. The production of main parts and accessories of rail vehicles is in short supply. The production capacity of domestic enterprises can no longer meet the demand of the market. Some rail vehicle parts and accessories still need to be imported; Most of them are steel castings, and the surface treatment process is very complicated. Once they fail, they can only be returned to the furnace for treatment, and the recycling of the remaining value cannot be realized. [0003] With the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C4/134C23C24/10C23C4/06C23C4/08C23C4/10C23C4/11
CPCC23C24/10C23C4/06C23C4/08C23C4/10C23C24/103C23C24/106
Inventor 李向阳黄佳华李露何泽
Owner 四川金虹等离子技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap