Electric arc wire filling additive manufacturing method for inclined thin-walled structural part

A thin-walled structural part and additive manufacturing technology, applied in the field of additive manufacturing, can solve the problems of inability to form the inclination angle to determine the offset of the welding torch, unsuitable for multi-layer single-channel inclined thin-walled structural parts, etc., to overcome the flow of molten pool. Problems, effects that are easy to automate

Inactive Publication Date: 2016-09-07
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0006] Chinese patent application number: 201210483539.8 The patent titled "A Method for Arc Additive Manufacturing of Titanium Alloy Structural Parts" provides a method for arc additive manufacturing of multi-layer and multi-channel titanium alloy structural parts with a circular cross-section. The inner to outer annular welds are overlapped to form a layer of annular parts, which is mainly aimed at the accumulation of multi-layer and multi-channel annular structural parts, but this method is not suitable for the accumulation of multi-layer single-channel inclined thin-walled structural parts, nor can it be based on The inclination angle between the thin-walled structural part and the substrate determines the offset of the welding torch during the stacking process

Method used

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  • Electric arc wire filling additive manufacturing method for inclined thin-walled structural part
  • Electric arc wire filling additive manufacturing method for inclined thin-walled structural part

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the high-strength steel straight wall structure is a multi-layer single-channel structure. The height of the structure is 70mm, the width is 7.5mm, and the length is 150mm. The angle between the straight wall structure and the base plate is 45°. The arc-filling additive manufacturing equipment is Panasonic YD-500FR power supply, the ABB robot is used as the motion mechanism, and the welding torch is fixed on the end of the sixth axis of the robot. Arc wire filling additive manufacturing parameters: stacking current 150A, stacking speed 5mm / s, when the angle between the structural part and the substrate is 90°, the stacked layer height h is 1.66mm, and the protective gas used in the stacking process is 95% Ar+5% CO 2 The filler wire is CHW-55CNH high-strength weather-resistant steel welding wire with a diameter of 1.2mm. The size of the Q235 substrate is 200mm×120mm×10mm. The welding torch is fixed at the end of the sixth axis of the robot or o...

Embodiment 2

[0034] Such as figure 2 As shown, the high-strength steel ring structure is a multi-layer single-track structure with a height of 43mm and a width of 6mm. The center radius of the ring structure is 55mm, and the cross section of the ring structure is 60° from the base plate. The arc-filling additive manufacturing equipment is Panasonic YD-500FR power supply, the ABB robot is used as the motion mechanism, and the welding torch is fixed on the end of the sixth axis of the robot. The stacking process parameters of high-strength steel circular thin-walled structural parts are: stacking current 120A, stacking speed 5.3mm / s, when the angle between the structural part and the substrate is 90°, the stacking layer height h is 1.44mm, and the protective gas used in the stacking process is 95 %Ar+5%CO 2 , The filler wire is CHW-55CNH high-strength weather-resistant steel welding wire, the diameter of the wire is 1.2mm, and the size of the Q235 substrate is 200mm×150mm×10mm. The weldin...

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Abstract

The invention provides an electric arc wire filling additive manufacturing method for an inclined thin-walled structural part. The electric arc wire filling additive manufacturing method is used for manufacturing the inclined thin-walled structural part forming a certain included angle with a substrate. When multiple layers of single-pass inclined thin-walled parts are stacked, a first layer is formed by lapping two stacked weld beads, so that the problem of weld pool flowing due to excessive offset during stacking of a second layer is effectively solved; and when the second layer and subsequent layers are stacked, a welding gun horizontally shifts for a certain distance in a direction perpendicular to the height, thereby forming an inclined structure. According to the electric arc wire filling additive manufacturing method disclosed by the invention, the problems of high equipment cost, complex system, low forming precision of stacked parts and the like of an existing inclined thin-walled structural part are solved; the forming of the inclined thin-walled structural part can be finished in a mode of not turning over the substrate by a positioner; high-quality forming of the inclined thin-walled structural part is realized; and in addition, the method is easy in automation of forming process.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an arc-filled wire additive manufacturing method for inclined thin-walled structural parts. Background technique [0002] In recent years, under the background of resource conservation and high-efficiency manufacturing, the research and application of additive manufacturing technology for metal parts has attracted extensive attention from researchers. Although the traditional casting and machining methods of metal components have high manufacturing precision, there are a series of problems such as manufacturing process inclination, low processing efficiency, low material utilization rate, low manufacturing flexibility, and high production cost. [0003] The arc-filling additive manufacturing technology uses welding arc as the heat source, under the action of the arc heat source, the welding wire is melted, layered and sliced ​​according to the three-dim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04
CPCB23K9/04
Inventor 熊俊雷洋洋尹紫秋陈辉
Owner SOUTHWEST JIAOTONG UNIV
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