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A method of asynchronous wire feeding to realize gradient surfacing welding

A wire feeding speed and wire feeding technology, which is applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of reducing the transition gradient of chemical composition preparation of the surfacing layer, reducing production efficiency, and reducing production efficiency, so as to achieve the realization of piling The effect of low alloy transition gradient of welding layer, saving replacement time and flexible deployment

Active Publication Date: 2022-05-06
JIUJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of the difference in welding wire composition means the increase of welding wire types, so it is not feasible to use the method of replacing welding wire to infinitely reduce the chemical composition of the overlay layer to prepare the transition gradient
[0005] Secondly, frequent replacement of welding wire leads to lower production efficiency
If the number of surfacing welding layers increases, using frequent replacement of welding wires to increase the number of surfacing welding transition layers will consume a lot of time for wire replacement, resulting in a decrease in production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Example 1: A high-toughness and wear-resistant working layer is surfacing on the Q235 substrate by adopting the asynchronous wire feeding gradient surfacing method with double wire feeders. The target surfacing layer thickness is 8 mm, and the wear-resistant layer thickness is 5 mm.

[0082] 1. Experimental method

[0083] 1.1. Welding equipment installation

[0084] (1) Select the surfacing heat source: select the plasma welding machine as the heat source.

[0085] (2) Determine the installation position of the wire feed tube: use the fixture to install the double wire feed tube at the end of the plasma torch, adjust the angle of the wire feed tube, and align the welding wire with the core of the welding heat source.

[0086] (3) Purchase wire feeder and control system: purchase two speed-adjustable wire feeders and equip with an independent wire feeder speed setting system.

[0087] 1.2. Selection of welding materials

[0088] (1) Functional welding wire: choose 1....

Embodiment 2

[0098] Example 2: A high-toughness and wear-resistant working layer is surfacing on the Q235 substrate by adopting asynchronous wire feeding gradient surfacing welding method with double wire feeding tubes. The target surfacing layer thickness is 10 mm, and the wear-resistant layer thickness is 6 mm.

[0099] 1. Experimental steps

[0100] 1.1. Welding equipment installation

[0101] (1) Select the surfacing heat source: select the plasma welding machine as the heat source.

[0102] (2) Determine the installation position of the wire feed tube: use the fixture to install the double wire feed tube at the end of the plasma torch, adjust the angle of the wire feed tube, and align the welding wire with the core of the welding heat source.

[0103] (3) Purchase two speed-adjustable wire feeders and equip with an independent wire feed speed setting system.

[0104] 1.2. Selection of welding materials

[0105] (1) Functional welding wire: choose 1.2mm KB-999WC flux-cored welding w...

Embodiment 3

[0115] Example 3: A high-toughness and wear-resistant working layer is surfacing on the Q235 substrate by adopting asynchronous wire feeding gradient surfacing welding method with double wire feeding tubes. The target surfacing layer thickness is 12 mm, and the wear-resistant layer thickness is 6 mm.

[0116] 1. Experimental steps

[0117] 1.1. Welding equipment installation

[0118] (1) Select the surfacing heat source: select the plasma welding machine as the heat source.

[0119] (2) Determine the installation position of the wire feed tube: use the fixture to install the double wire feed tube at the end of the plasma torch, adjust the angle of the wire feed tube, and align the welding wire with the core of the welding heat source.

[0120] (3) Purchase two speed-adjustable wire feeders and equip with an independent wire feed speed setting system.

[0121] 1.2. Selection of welding materials

[0122] (1) Functional welding wire: choose 1.6mm KB-999WC flux-cored welding w...

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Abstract

The invention provides a method for realizing gradient surfacing welding by asynchronous wire feeding, which belongs to the field of welding. The invention realizes the asynchronous wire feeding of the functional welding wire and the transitional welding wire by independently adjusting and controlling the wire feeding speeds of the functional welding wire feeder and the transitional welding wire, adjusts the concentration of various alloys required for transitional layer surfacing, and changes the substrate to work The alloy transition gradient of the transition layer between the layers, thus getting rid of the dependence of the alloy concentration of the surfacing layer on the type of welding wire; at the same time, the use of asynchronous wire feeding does not need to replace the welding wire, which can realize the flexible allocation of alloy concentration and save the time of welding wire replacement, thus The purpose of gradient surfacing welding can be realized efficiently.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method for realizing gradient surfacing welding by asynchronous wire feeding. Background technique [0002] In the 21st century, protecting the global environment, building a circular economy, and maintaining sustainable development have become topics of common concern to all countries in the world. Failure is one of the main reasons for the obsolescence of mechanical parts, and wear is one of the main forms of material failure. As the most commonly used technology in remanufacturing, surfacing welding applies the connection technology of welded parts to the surface of parts, and deposits materials on the surface of the substrate to achieve the purpose of restoring device size or improving performance. [0003] According to the differences in the structure and properties of the surfacing layer and the base metal, surfacing welding can be divided into homogeneous material surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/133
CPCB23K9/04B23K9/133
Inventor 安丰辉张德勤潘东白小波
Owner JIUJIANG UNIVERSITY
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