Unifilar tungsten arc spray equipment

An arc spraying and tungsten electrode technology, which can be used in spraying devices, liquid spraying devices, etc., can solve the problem of high cost

Inactive Publication Date: 2005-03-16
HARBIN INST OF TECH
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of ceramic coatings still

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
  • Unifilar tungsten arc spray equipment
  • Unifilar tungsten arc spray equipment
  • Unifilar tungsten arc spray equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0006] Specific embodiment 1: The principle of the present invention is to use a tungsten electrode (connected to the negative pole of the power supply) and a single spray wire (connected to the positive pole of the power supply) to establish an arc through high-frequency arc ignition to melt the spray wire, and accelerate the spraying through compressed air atomization A new type of arc spraying device on a workpiece. The spraying wire of the present invention can be a solid metal core wire or a cored tubular wire. Since the temperature of the arc is twice as high as the temperature of the flame, the device of the present invention is particularly suitable It is applied to the spraying of ceramic core tubular wire (metal sheathing ceramic powder), so as to realize the purpose of preparing ceramic coating by arc spraying method with low cost and high performance coating quality. The device of the present invention includes an air compressor 1, a spraying power supply 2, a wire fee...

Example Embodiment

[0010] Specific implementation manner 2: The spraying process of this embodiment is as follows: 1. The surface of the workpiece is roughened: the surface of the sprayed workpiece is cleaned to remove oil stains, the defects and fatigue layer are processed or polished by lathe, and then the surface is roughened by sandblasting. 2. On-line: the spray gun, wire feeder, and air compressor described in the first embodiment are connected to the spray power supply, and the spray wire is inserted into the wire feeder and fed into the spray gun, see image 3Shown. 3. Adjust the spraying process parameters: pre-adjust the atomizing compressed air pressure and flow, spraying voltage, spraying current, arc ignition current, wire feeding speed. The adjustment of the process parameters is related to the material type of the sprayed wire and the specification and diameter of the sprayed wire. The material and diameter are different, and the corresponding process parameters are also different: the...

Example Embodiment

[0011] Specific embodiment 3: This embodiment is the spraying process of the crankshaft:

[0012] 1. Conditions: The sprayed product is a worn imported automobile crankshaft, made of ductile iron, with a maximum wear depth of 0.5mm, and the outer diameter of the crankshaft is already elliptical, and the size needs to be restored.

[0013] 2. Spraying process: firstly degrease and decontaminate the crankshaft, grind the fatigue layer and ellipticity of the crankshaft outer diameter, and then roughen it with sandblasting, and mount the crankshaft on a special worktable for crankshaft spraying with rotating function. Connect the equipment, adjust the various process parameters required for spraying, spraying voltage 25V; compressed air gas pressure 0.65MPa; arc blowing current 10A; spraying current 100A; wire feeding speed 1m / min; spraying wire diameter Φ1. 5mm. You can start spraying when everything is ready.

[0014] 3. Coating preparation: The spraying material is made of self-mad...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a kind of arc spray device. The existing spraying devices have disadvantage of poor spraying quality. An air- compressed tube is fixed at the inner of the device's body, and it connects to negative pole of the electric source and the metal gun spout. Above center shaft of the gun body is a metal tube .At the place where the metal tube is near to the gun spout is a conducting spout .The invention is used for surface modifying of new workpiece .It can prolong the service life of the machine save material and energy , and therefore cut down the cost .

Description

Technical field: [0001] The invention belongs to an electric arc spraying technology in the subject of surface engineering, in particular to an invention of spraying equipment. Background technique: [0002] Spraying technology is an important surface modification technology in surface engineering. Thermal spraying technology is to heat a certain linear or powder material to a molten or molten state through heat sources such as flame, electric arc, plasma or light, and accelerate the spraying to the A coating is formed on the surface of the substrate. In principle, this technology can spray any substrate material, and various materials (conductive, non-conductive, fusible, refractory materials, such as ferrous metals, non-ferrous metals, alloys, ceramics, cermets, plastics, organics, compounds, etc. ) as the coating material. It can strengthen or regenerate the surface of the material, and can realize coating functions such as high temperature resistance, corrosion resista...

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): B05B7/22
Inventor 郭面焕刘爱国
Owner HARBIN INST OF TECH
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