Inner bore plasma spraying method

A plasma and inner hole technology, applied in coating, fusion spraying, metal material coating process, etc., can solve the problems of large size, virtual spraying, easy formation of voids in the coating, etc., to improve the performance and practicability of the coating Powerful, easy-to-use effects

Active Publication Date: 2014-10-08
GUANGDONG YUEKE NEW MATERIALS TECH CO LTD
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For spraying the inner hole, the size of the conventional plasma (outer circle) spray gun is large, and it is impossible to spray the plasma gun perpendicular to the spray surface of the workpiece. The angle can only be adjusted to the limit angle of 70-80° where the spray gun...

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inner bore plasma spraying method
  • Inner bore plasma spraying method
  • Inner bore plasma spraying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The method for plasma spraying inner hole of the present invention, comprises the steps:

[0020] First, adjust the spraying position between the plasma outer circle spray gun 1 and the inner hole of the workpiece 2. When the inner hole of the workpiece 2 is an inner hole near one end or a middle inner hole with a larger diameter, place the plasma outer circle spray gun 1 obliquely. Insert it into the inner hole, and adjust the angle of the spray gun to the limit angle of 70-75° that does not collide with the workpiece;

[0021] Then, adjust the powder feeding method of the plasma outer circle spray gun 1, the powder feeding method is to use the powder feeding pipe 3 at the bottom of the spray gun to feed powder radially upwards, such as image 3 As shown, the powder feeding method can make the powder particles flow through the plasma flame and form a certain angle with the flame under the action of the powder feeding gas during the heating flight of the powder particle...

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

An inner bore plasma spraying method comprises the following steps: first, adjusting the spraying position between a plasma cylindrical spray gun and a workpiece inner bore; then sending powder by a radial upward powder sending manner from the lower part of the pray gun; finally, according to the different spraying powder adjusting the flow amount of a powder sending gas to enable the powder to be fully heated and melted in the flame and upward shift a right angle. The inner bore plasma spraying method uses the radial upward powder sending manner from the lower part of the pray gun for powder sending, and the flow amount of the powder sending gas can be adjusted according to the different spraying powder, so that the powder can be fully heated and melted in the flame and upward shifts a right angle, the formation of spraying dead angles on the upper edge of the inner bore can be avoided, the coating performance of a coating on the upper edge of the inner bore can be improved, the hollow and empty spray problems of the coating can be avoided, and the inner bore plasma spraying method has the advantages of simple operation and strong practicability, and is suitable for the atmospheric pressure plasma or low pressure (vacuum) plasma spraying.

Description

technical field [0001] The invention relates to the technical field of plasma spraying, in particular to a method for plasma spraying inner holes. Background technique [0002] Since the heat source temperature of plasma spraying can reach tens of thousands of degrees, the range of materials that can be sprayed is very wide, including metals, non-metals, ceramics, etc., which can be used as plasma spraying materials, and the range of substrates is also wide. Plasma sprayed coatings are of good quality. Plasma spraying is mostly used in the field of aerospace and aerospace, and occupies a large market share in the field of thermal spraying, preparing coatings with insulation, wear resistance and wear sealing. [0003] However, in these fields, it is often necessary to spray the inner hole of the part. For some parts with a relatively large length and diameter, a special inner hole spray gun is generally used for spraying, but because the inner hole spray gun is limited by po...

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): C23C4/12C23C4/134
Inventor 朱晖朝张忠诚陈志坤王枫黄健朱霞高雷运生刘自敬
Owner GUANGDONG YUEKE NEW MATERIALS TECH CO LTD
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