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Arc additive manufacturing in-situ alloying device and method capable of achieving alternate wire melting and powder supply

An additive manufacturing and alloying technology, applied in the field of arc additive manufacturing in-situ alloying devices, can solve the problems of limiting the application of arc additive manufacturing, difficult to achieve in-situ alloying and compounding of metal materials, etc., to achieve work efficiency High, optimize tissue properties, reduce the effect of surface roughness

Pending Publication Date: 2019-07-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, limited by the types of wires available in the market and the number of wires that can be filled, the current arc additive manufacturing mainly feeds and fills single-quality metal wires and small-ratio alloy wires. The in-situ alloying and compounding of metal materials in arc additive manufacturing severely limits the application of arc additive manufacturing in industry

Method used

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  • Arc additive manufacturing in-situ alloying device and method capable of achieving alternate wire melting and powder supply
  • Arc additive manufacturing in-situ alloying device and method capable of achieving alternate wire melting and powder supply
  • Arc additive manufacturing in-situ alloying device and method capable of achieving alternate wire melting and powder supply

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 Shown is an in-situ alloying device for electric arc additive manufacturing with alternate fuse powder feeding, including a spraying device, a fuse device and a turning table 10;

[0038] The upper surface of the overturning workbench is used for installing the substrate, and the overturning workbench can realize switching between the horizontal working position and the vertical working position. When the overturning workbench is located at the horizontal working position, the fuse device accumulates fuses on the substrate. When the turning table is in the vertical working position, the spraying device sprays on the surface of the deposited layer on the substrate;

[0039] The spraying device includes a compressor 1, an airflow channel 16, a powder hopper 2, a nozzle 4 and a spraying control robot 3, the compressor is connected to the airflow channel, and the airflow channel is bifurcated into a first airflow channel and a second airflow channel, so A ...

Embodiment 2

[0050] An in-situ alloying method for electric arc additive manufacturing with alternate fuse powder feeding, which is carried out according to the following steps:

[0051] 1) Design the slice model according to the appearance size of the metal part, and then plan the deposition path according to the specific characteristics of each slice;

[0052] 2) Fix the polished, cleaned and dried substrate on the turning table;

[0053] 3) Rotate and flip the worktable to the vertical position;

[0054] 4) The spraying control robot drives the nozzle to move, and sprays a certain thickness of target powder on the deposition path of the target layer of the substrate. After the spraying is completed, the table is rotated and turned to the horizontal position;

[0055] 5) The fuse control robot drives the arc heat source and cooperates with the automatic wire filling machine to perform arc wire filling on the above-mentioned sprayed powder layer to complete the melting and forming of sev...

Embodiment 3

[0058] A: Preparatory stage

[0059] The Ti6Al4V titanium alloy welding wire with a diameter of 1.2mm is used as the raw material.

[0060] Consider TiB 2 Powder deformation is difficult and difficult to spray onto the substrate, the softer Ti6Al4V alloy powder (particle size range 30-45μm) and TiB 2 Ceramic powder (particle size range 10-15μm) is subjected to high-energy ball milling at a mass ratio of 6:4 to make TiB 2 Ceramic powder is embedded on the surface of Ti6Al4V alloy powder to make mixed powder as in-situ alloying material.

[0061] Prepare a "wall" component with dimensions of 120mm in length, 10mm in width, and 50mm in height, design a slice model and plan the deposition path according to the dimensions;

[0062] Fix the Ti6Al4V titanium alloy substrate with a thickness of 5mm on the turning table after grinding, cleaning and drying;

[0063] Rotate and flip the worktable to the vertical position;

[0064] B: Spraying stage

[0065] The equipment used for spr...

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Abstract

The invention discloses an arc additive manufacturing in-situ alloying device and method capable of achieving alternate wire melting and powder supply. The device comprises a spraying device, a wire melting device and a turnover workbench. Through the gas power spraying device, in-situ spraying of multiple kinds of pure metal powder, alloy powder and metal-ceramic composite powder can be achieved,and alloying and compounding of an arc additive manufacturing material can be achieved to the greatest degree. When the gas power spraying device carries out in-situ powder spraying, generated high-speed gas jet flow carrying powder particle impacts on the surface of a deposition layer, the function of stress peening is achieved, a pressure stress layer is introduced, surface roughness is reduced, and the structure performance of an arc additive manufacturing metal component is optimized. The device completely depends on existing welding equipment existing spraying equipment in the market, additional equipment research and development expenditures are not needed, the powder spraying process and the subsequent arc wire filling process are controlled by programming of a six-axis joint robot, automatic operation can be carried out, and the work efficiency is high.

Description

technical field [0001] The invention belongs to the field of arc additive manufacturing, and in particular relates to an in-situ alloying device and method for arc additive manufacturing with alternate fuse powder feeding. Background technique [0002] Arc additive manufacturing technology uses an arc as a heat source to melt metal wires and build up three-dimensional metal components layer by layer according to the computer preset path. Compared with laser heat sources and electron beam heat sources, arc additive manufacturing relies on existing welding equipment and welding consumables. The cost of equipment and raw materials is low, and the utilization rate of wire materials is high. Ultra-large and complex components can be fabricated in an atmospheric environment. forming. Theoretically, the use of arc additive manufacturing can realize the molding of any metal material and metal matrix composite material of any shape. [0003] However, limited by the types of wires a...

Claims

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Application Information

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IPC IPC(8): C23C4/131B22F3/105C23C4/067C23C4/137C22C47/16C22C49/11C22C49/14B33Y10/00B33Y30/00B23K9/04C22C101/22
CPCC23C4/131C23C4/067C23C4/137C22C47/16C22C49/11C22C49/14B33Y10/00B33Y30/00B23K9/04B22F10/00B22F12/53B22F10/22B22F10/25B22F10/50B22F12/70B22F10/38B22F12/22B22F12/37Y02P10/25
Inventor 杨振文张萌刘齐许博王颖王东坡李会军
Owner TIANJIN UNIV
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