A particle-mixed powder-cored wire pulsed arc particle planting method

A technology of pulsed arc and planting method, which is applied in the direction of arc welding equipment, welding equipment, welding medium, etc., to achieve the effect of prolonging service life, wide selection range and improving performance

Active Publication Date: 2022-06-17
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A particle-mixed powder-cored wire pulsed arc particle planting method
  • A particle-mixed powder-cored wire pulsed arc particle planting method
  • A particle-mixed powder-cored wire pulsed arc particle planting method

Examples

Experimental program
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Effect test

Embodiment

[0027] Using 304 stainless steel as the base plate, the surface to be planted is polished flat to remove oxide skin and other impurities, and after scrubbing with anhydrous alcohol, it is dried with hot air for use.

[0028] A 304 stainless steel tube with an inner diameter of 3 mm and a wall thickness of 0.2 mm was selected as the outer sheath of the welding wire. Coarse SiC particles and MCrAlY alloy powder were mixed with a rosin-based synthetic resin binder in a mass ratio of 5:1, and packed into the stainless steel tube with dense filling. The particle size of SiC coarse particles is 1000~3000μm, and the particle size of MCrAlY alloy powder is 45~105μm, and the port is sealed.

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

[0030] The prepared powder-cored welding wire mixed with particles is placed flat on the surface of the workpiece, and DC positive connection is adopted, that is, the workpiece is connected to the positive e...

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Abstract

A particle-mixed powder-cored welding wire pulsed arc particle planting method, including grinding the surface of a workpiece to be planted to remove impurities and cleaning it; preparing a particle-mixed powder-cored wire, mixing metal alloy powder and ceramic particles in proportion and then packing it into a thin wall In the metal tube; set the welding parameters; connect the circuit to realize and complete the planting process of ceramic particles. The invention can fill the thin-walled metal tube with metal powder with special properties as required, so as to realize the oxidation resistance, wear resistance, corrosion resistance and other functions of the particle planting surface, and can adjust the ratio of metal powder to ceramic particles Realize the adjustment of the exposed height of the particles, and realize the planting of any ceramic particles.

Description

technical field [0001] The invention relates to a pulse arc particle planting method of a particle mixed powder core welding wire, 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 plating and preparing a metal conductive layer on the surface of the ceramic particles to be planted; connecting the workpiece to the negative electrode of the spot welding equipment, and connecting the tungsten electrode to the positive electrode , the 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 particle, and the welding wire, the particle and the workpiece are in direct contact, and the electr...

Claims

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Application Information

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Patent Type & Authority Patents(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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