Wire arc additive manufacturing method of Al-Mg-Si alloy

An al-mg-si, additive manufacturing technology, applied in the field of metal additive manufacturing, can solve the problems of microstructure coarsening, performance degradation of additive body, limited action area of ​​stirring needle, etc., and achieve repair of pores and cracks, etc. Defects, prevent overheating, improve the effect of mechanical properties

Active Publication Date: 2019-05-28
NORTHEASTERN UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the additive body is modified by the method of friction stir processing, the action area of ​​the stirring pin is limited, and the metal on the side wall of the additive body is difficult to be processed, and the metal on the side wall still retains the characteristics of the casting structure; in a

Method used

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  • Wire arc additive manufacturing method of Al-Mg-Si alloy
  • Wire arc additive manufacturing method of Al-Mg-Si alloy
  • Wire arc additive manufacturing method of Al-Mg-Si alloy

Examples

Experimental program
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Example Embodiment

[0029] Example 1

[0030] Such as Figure 1 ~ Figure 4 As shown, this embodiment provides The method of 6061 aluminum alloy wire arc additive manufacturing straight wall wall includes the following steps:

[0031] Step 1. Use the cooling roller to assist in arc additive forming: use 3D drawing software to draw a straight wall model with a size of 300mm (length) × 100mm (height) × 11mm (width), and use slice software to layer the part model Slicing process to obtain layered slice data, use simulation software to simulate the layered slice data and optimize the forming path, generate robot control code (or CNC code), import the robot control code into the welding robot, and use the welding robot to use The arc generated by the MIG welder is the heat source, and the 6061 aluminum alloy wire arc additive forming is performed on the T-shaped substrate 1 prepared in advance, and 2 to 4 layers are co-deposited to form the multilayer deposited metal 2. The formed multilayer deposited met...

Example Embodiment

[0043] Example 2

[0044] This example provides The method of 6082 aluminum alloy wire arc additive manufacturing straight wall wall includes the following steps:

[0045] Step 1. Use the cooling roll assisted for arc additive forming: use three-dimensional drawing software to draw a straight wall model of 350mm (length) × 100mm (height) × 42mm (width), and use slicing software to layer the part model Slicing process to obtain layered slice data, use simulation software to simulate the layered slice data and optimize the forming path, generate robot control code (or CNC code), import the robot control code into the welding robot, and use the welding robot to use The arc generated by the MIG welder is the heat source, and the 6082 aluminum alloy wire arc additive forming is performed on the T-shaped substrate 1 prepared in advance to form a multilayer deposited metal 2, co-deposit 2 layers, and the formed multilayer deposited metal 2 The width is 42mm, and the multilayer deposited...

Example Embodiment

[0058] Example 3

[0059] This example provides The method of 6061 aluminum alloy wire arc additive manufacturing straight wall wall includes the following steps:

[0060] Step 1. Use the cooling roll assisted for arc additive forming: use three-dimensional drawing software to draw a straight wall model with a size of 350mm (length) × 100mm (height) × 7mm (width), and use slice software to layer the part model Slicing process to obtain layered slice data, use simulation software to simulate the layered slice data and optimize the forming path, generate robot control code (or CNC code), import the robot control code into the welding robot, and use the welding robot to use The arc generated by the MIG welder is the heat source, and the 6061 aluminum alloy wire arc additive forming is performed on the T-shaped substrate 1 prepared in advance, and 2 to 4 layers are co-deposited to form the multilayer deposited metal 2. The formed multilayer deposited metal The width of 2 is 7mm, and ...

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Abstract

The invention discloses a wire arc additive manufacturing method of Al-Mg-Si alloy. The wire arc additive manufacturing method of Al-Mg-Si alloy comprises the following steps that firstly, cooling rolling is used for assisting in arc additive forming; secondly, milling is carried out on the side face and the top face of an additional material body; thirdly, a friction stir machining device is usedfor carrying out friction stir machining on the additional material body, meanwhile, in the friction stir machining process, a cooling rolling device is used for exerting cooling rolling on the sidewall of the additional material body; fourthly, finish milling is carried out on the upper surface of the additional material body for preparing of arc additive forming of the next step; fifthly, theabove steps are circularly and repeatedly executed until the final forming of the part is finished. Dendritic growth and grain refining in the Al-Mg-Si alloy additive forming process can be completelybroken, defects of air holes, cracks and the like can be effectively overcome, meanwhile, in the wire arc additive manufacturing and the modification process thereof, cooling is applied, the problemsof additional material body overheating and microstructure coarsening caused by overheating can be solved, and the mechanical property, particularly, plasticity and fatigue properties, of the addition material body can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal additive manufacturing, and relates to a wire arc additive manufacturing method of Al-Mg-Si alloy, in particular to a wire of Al-Mg-Si alloy aided by cooling roll pressing and friction stir processing. Material arc additive manufacturing method. Background technique [0002] Metal wire arc additive manufacturing (Wire and Arc Additive Manufacture, WAAM) uses gas metal arc welding (GMAW), argon tungsten arc welding (GTAW) or plasma arc welding (PAW) as the heat source, using discrete, The principle of stacking is an advanced manufacturing technology for surfacing and welding three-dimensional metal parts layer by layer from line-surface-body under the control of the program through the addition of metal wires according to the three-dimensional digital model. Compared with the additive manufacturing technology using laser and electron beam as heat source, it has the following advantages: 1) high depo...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 何长树韦景勋田妮秦高梧
Owner NORTHEASTERN UNIV
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