Structure grain refining method for arc additive manufacturing by adopting aluminum-silicon alloy

An aluminum-silicon alloy and additive manufacturing technology, which is applied in the direction of manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of periodic cracks, coarse grains, etc., and achieve moderate weld width, good shape, and eliminate The effect of coarse columnar crystals

Active Publication Date: 2019-08-02
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of coarse grains and periodic cracks between the existing aluminum-silicon alloy additive manufacturing layers, the present invention provides a microstructure grain refinement method using aluminum-silicon alloy for arc additive manufacturing

Method used

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  • Structure grain refining method for arc additive manufacturing by adopting aluminum-silicon alloy
  • Structure grain refining method for arc additive manufacturing by adopting aluminum-silicon alloy
  • Structure grain refining method for arc additive manufacturing by adopting aluminum-silicon alloy

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Embodiment 1

[0028] An embodiment of the present invention provides a microstructure and grain refinement method for arc additive manufacturing using an aluminum-silicon alloy, which includes the following steps:

[0029] Step a, prefabricating the Al-5Ti-1B master alloy into thin slices by wire electric discharge cutting, cleaning with an ultrasonic cleaning machine, cleaning in absolute ethanol and drying;

[0030] Step b. Place the sheet between two adjacent layers of Al-Si alloy, and the thickness of each Al-Si alloy layer is 2mm, under the protective atmosphere of argon gas, and the flow rate of argon gas is 15L / min , using the arc additive manufacturing method for aluminum-silicon alloy arc additive manufacturing, wherein the quality of the thin slice placed on each layer is 1.14% of the mass of the upper aluminum-silicon alloy, the length of the thin slice is the same as the length of the aluminum-silicon alloy layer, and the arc additive The wire feeding speed of the manufacturing ...

Embodiment 2

[0032] An embodiment of the present invention provides a microstructure and grain refinement method for arc additive manufacturing using an aluminum-silicon alloy, which includes the following steps:

[0033] Step a, prefabricating the Al-5Ti-1B master alloy into thin slices by wire electric discharge cutting, cleaning with an ultrasonic cleaning machine, cleaning in absolute ethanol and drying;

[0034] Step b. Place the sheet between two adjacent layers of Al-Si alloy, and the thickness of each layer of Al-Si alloy is 0.3mm, under the protective atmosphere of argon gas, and the flow rate of argon gas is 18L / min, using the arc additive manufacturing method to carry out arc additive manufacturing of aluminum-silicon alloy, wherein the mass of the thin slice placed on each layer is 3% of the mass of the upper layer of aluminum-silicon alloy, and the length of the thin slice is the same as the length of the aluminum-silicon alloy layer. The wire feeding speed of the material ma...

Embodiment 3

[0036] An embodiment of the present invention provides a microstructure and grain refinement method for arc additive manufacturing using an aluminum-silicon alloy, which includes the following steps:

[0037] Step a, prefabricating the Al-5Ti-1B master alloy into thin slices by wire electric discharge cutting, cleaning with an ultrasonic cleaning machine, cleaning in absolute ethanol and drying;

[0038] Step b. Place the sheet between two adjacent layers of Al-Si alloy, and the thickness of each layer of Al-Si alloy is 2.5mm, under the protective atmosphere of argon gas, and the flow rate of argon gas is 20L / min, using the arc additive manufacturing method to carry out arc additive manufacturing of aluminum-silicon alloy, wherein the mass of the thin slice placed on each layer is 5% of the mass of the upper layer of aluminum-silicon alloy, the length of the thin slice is the same as the length of the aluminum-silicon alloy layer, and the arc increases The wire feeding speed ...

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Abstract

The invention relates to the technical field of alloy optimization, and particularly discloses a structure grain refining method for arc additive manufacturing by adopting aluminum-silicon alloy. Themethod comprises the following steps that Al-5Ti-1B intermediate alloy is prefabricated into thin sheets, cleaned and dried; the thin sheets are placed between the adjacent aluminum-silicon alloy layers, and aluminum-silicon alloy arc additive manufacturing is carried out by adopting an arc additive manufacturing method, wherein the mass of the thin sheets placed in each layer is 1-5% of the massof the aluminum-silicon alloy in the corresponding layer.. According to the structure grain refinement method for arc additive manufacturing by adopting the aluminum-silicon alloy, coarse columnar crystals can be converted into fine equiaxed crystals, and the effects of crystal form conversion and grain refinement are achieved.

Description

technical field [0001] The invention relates to the technical field of alloy optimization, in particular to a microstructure and grain refinement method for arc additive manufacturing using an aluminum-silicon alloy. Background technique [0002] Arc additive manufacturing technology is a new technology developed in recent years. Metal wire is used as the forming material, and the arc is used as the heat source to melt the material and then precipitate along the forming track to realize the accumulation and forming of parts. Arc additive manufacturing has equipment It has the advantages of less investment, high precipitation efficiency, high material utilization rate, stable equipment operation, and low operating cost. It does not need to make molds separately, and the process is simple, which can meet the needs of rapid and low-cost manufacturing of products. Therefore, it is widely used in aerospace, shipbuilding, automobiles It has special significance in the forming of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/16B23K9/235B33Y10/00
CPCB23K9/04B23K9/16B23K9/235B33Y10/00
Inventor 王立伟索英超王倩梁志敏汪殿龙
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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