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Fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method

A remanufacturing and arc welding technology, applied in the field of MIG arc welding additive remanufacturing of fractured plates, can solve the problems of large heat accumulation effect, difficulty in determining the number of welds and welding layers, and poor size uniformity of single-pass welds. , to achieve the effect of strong operability, reducing heat accumulation effect, improving dimensional accuracy and service performance

Inactive Publication Date: 2018-12-07
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When the existing MIG arc welding process and method are used to repair fractured plates such as iron, aluminum, titanium and their alloy plates, the main problems are difficult to determine the number of welds and welding layers, poor uniformity of single-pass weld size, and large heat accumulation effect. And other issues

Method used

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  • Fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method
  • Fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method
  • Fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In Embodiment 1, the MIG arc welding additive remanufacturing method of the fractured plate provided by the present invention includes the following steps:

[0042] S1: Measurement of the defect volume of the fractured part. Through the reverse engineering method, the defect size of the fractured part is determined; the obtained defect size is 35.3mm×20.4mm×4.7mm in length, width and height.

[0043] S2: The overall planning of stacking, with a stacking rate of 8mm 2 , under the accumulation rate condition, the height of each repair is 1.0mm~1.5mm, and the repair width is 4.0mm~6.6mm, and the number of single-layer welds can be determined as [20.4 / 6.6+0.5]~[20.4 / 4+0.5 ], that is, 3~5 layers, the total number of welding layers is: [4.7 / 1.5+0.5]~[4.7 / 1+0.5], that is, 3~5 layers.

[0044] S3: In terms of single-pass weld optimization, the welding accumulation rate at the arc burning position is reduced (10% to 30%) compared with the welding process accumulation rate, whic...

Embodiment 2

[0050] In the second embodiment, the MIG arc welding additive remanufacturing method of the fractured plate provided by the present invention includes the following steps:

[0051] S1: Measurement of the defect volume of the fractured part. The length, width and height of the defect obtained from the measurement are 47mm×37mm×9.3mm, respectively.

[0052] S2: The overall plan for stacking, with a stacking rate of 30mm 2 , under the accumulation rate condition, the repair height of each layer is 2.3mm-2.7mm, and the repair width is 7.8mm-11.0mm, so the number of single-layer welds can be determined as [37 / 11+0.5]~[37 / 7.8+0.5] , that is, 4~6 layers, the total number of welding layers is: [9.3 / 2.7+0.5]~[9.3 / 2.3+0.5], that is, 3~4 layers.

[0053] S3: In terms of single-pass weld optimization, the welding accumulation rate at the arc burning position is reduced (10% to 30%) compared with the welding process accumulation rate, which is 30% in this embodiment. The welding accumulatio...

Embodiment 3

[0059] In the third embodiment, the MIG arc welding additive remanufacturing method of the fractured plate provided by the present invention includes the following steps:

[0060] S1: Measurement of the defect volume of the fractured part. The length, width and height of the defect obtained from the measurement are 115mm×76mm×26mm, respectively.

[0061] S2: The overall planning of stacking, with a stacking rate of 15mm 2 , under this accumulation rate condition, the height of each repair is 1.5mm-2.3mm, and the repair width is 6.6mm-7.8mm, and the number of single-layer welds can be determined to be [76 / 7.8+0.5]~[76 / 6.6+0.5 ], that is, 10 to 12 layers, the total number of welding layers is: [26 / 2.3+0.5] to [26 / 1.5+0.5], that is, 11 to 17 layers.

[0062] S3: In terms of single-pass weld optimization, the welding accumulation rate at the arc burning position is reduced (10% to 30%) compared with the welding process accumulation rate, which is 20% in this embodiment. The weldi...

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Abstract

The invention discloses a fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method. The fracture plate MIG arc welding additive remanufacturing method comprises the first stepof measuring the geometrical defect size of a component / part, specifically, the defect size of the fracture part is measured, and the three-dimensional defect size of the fracture part is obtained; the second step of total planning of piling, specifically, by combining the three-dimensional defect size of the fracture part, according to piling heights and widths under different welding piling rates, the number of single-layer weld passes and the number of layers are determined; the third step of optimizing a single pass welding process, specifically, the welding piling rate at the arc startingposition is reduced, and the welding piling rate and welding gun inverse motion at the arc quenching position are improved; the fourth step of optimizing an interlayer path, specifically, the pilingpaths of every two adjacent layers are opposite in moving direction; and the fifth step of cooling, specifically, in the whole welding process, water cooling and / or air cooling are / is carried out on the fracture piece in real time. By means of the method, rapid recovery of the geometric size of size damage of the fracture is achieved, the heat accumulation effect is reduced, the remanufacturing size precision and service performance are improved, the repairing difficulty is lowered, and maneuverability is high.

Description

technical field [0001] The invention relates to the technical field of remanufacturing engineering based on 3D printing technology, in particular to a MIG arc welding additive remanufacturing method for a fractured plate. Background technique [0002] Metal inert gas welding (referred to as MIG welding, metal inert-gas welding) refers to the inert gas (Ar or He) shielded arc welding method using a solid wire. This welding method uses an external gas as the arc medium and protects the metal. Arc welding methods for molten droplets, weld pools and high temperature metals in the weld zone. [0003] When the existing MIG arc welding process and method are used to repair fractured plates such as iron, aluminum, titanium and their alloy plates, the main problems are that the number of welds and the number of welding layers are difficult to determine, the uniformity of single-pass weld size is poor, and the heat accumulation effect is large. And other issues. [0004] Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K9/04B23K9/28
CPCB23K9/04B23K9/173B23K9/28
Inventor 曹勇朱胜王晓明韩国峰周超极周克兵
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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