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Pulsed arc particle planting method for particle mixed powder-cored welding wire

A pulsed arc, planting method technology, applied in the direction of arc welding equipment, welding medium, welding equipment, etc., to achieve a wide range of options

Active Publication Date: 2021-02-02
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing shortcomings of the existing ceramic planting, and to seek a ceramic plant that avoids the electric arc force and the blowing force of the protective gas to blow the preset ceramic particles away from the predetermined position, so as to realize planting on demand and has a wide range of practicability. Particle planting method, proposed a particle-mixed powder cored wire pulsed arc particle planting method

Method used

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  • Pulsed arc particle planting method for particle mixed powder-cored welding wire
  • Pulsed arc particle planting method for particle mixed powder-cored welding wire
  • Pulsed arc particle planting method for particle mixed powder-cored welding wire

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Embodiment

[0027] Using 304 stainless steel as the substrate, the surface to be planted is polished and smoothed to remove scale and other impurities, and after scrubbing with absolute alcohol, it is dried with hot air for later use.

[0028] A 304 stainless steel tube with an inner diameter of 3 mm and a wall thickness of 0.2 mm is used as the outer skin of the welding wire. SiC coarse particles and MCrAlY alloy powder are mixed with a rosin-based synthetic resin binder at a mass ratio of 5:1, and packed into the stainless steel tube to fill it tightly. SiC coarse particle size is 1000~3000μm, MCrAlY alloy powder particle size is 45~105μm, and the port is sealed.

[0029] Set welding parameters: pulse current 50A, pulse frequency 1Hz, pulse width 50ms.

[0030] Put the prepared powder-cored wire mixed with particles flat on the surface of the workpiece, and use DC positive connection, that is, the workpiece is connected to the positive electrode, and the tungsten electrode is connected ...

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Abstract

The invention provides a pulsed arc particle planting method for a particle mixed powder-cored welding wire. The pulsed arc particle planting method comprises the steps of polishing the surface of a to-be-planted workpiece to remove impurities and cleaning the workpiece; preparing the particle mixed powder-cored welding wire, mixing metal alloy powder and ceramic particles in proportion, and thenloading the mixture into a thin-wall metal tube; setting welding parameters; and turning on a circuit and achieving and completing a ceramic particle planting process. According to the pulsed arc particle planting method for the particle mixed powder-cored welding wire provided by the invention, the thin-wall metal tube can be filled with metal powder with special performance according to needs, so that the functions of oxidation resistance, abrasion resistance, corrosion resistance and the like of the particle planting surface are achieved, the exposed height of the particles can be adjustedby adjusting the proportion of the metal powder to the ceramic particles, and planting of any ceramic particles is achieved.

Description

technical field [0001] The invention relates to a particle-mixed powder-core welding wire pulse arc particle planting method, which belongs to the technical field of ceramic metallurgy. Background technique [0002] In the prior art, Publication No. CN111468801A discloses a method for planting ceramic particles by precision pulse arc spot welding, which includes preparing a metal conductive layer on the surface of the ceramic particles to be planted; connecting the workpiece to the negative pole of the spot welding equipment, and the tungsten electrode to the positive pole , the surface metallized ceramic particles are evenly pre-placed on the surface of the workpiece to be planted, the precision pulse arc spot welding equipment is turned on, and the particle planting parameters are set; the welding wire is introduced between the electrode and the particles, and the welding wire, particles, and workpiece are in direct contact, and the electrode and the workpiece exist. Turn ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/167B23K9/235B23K35/40C23C24/10C04B37/02
CPCB23K9/04B23K9/167B23K9/235B23K35/40C23C24/10C04B37/02B23K35/406
Inventor 王德王文琴高俊豪胡波邓绍俊熊震宇江淑园程东海胡德安
Owner NANCHANG HANGKONG UNIVERSITY
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