Continuous wire feeding autonomous induction heating additive manufacturing device and method

Abstract

The invention provides a continuous wire feeding autonomous induction heating additive manufacturing device and method. By automatically conveying a wire material horizontally, after correcting the orientation movement, the preheating and melting of an induction coil make the molten drop fall onto a baseplate to be stacking-molded into a metal layer under the action of own gravity and propulsion of the wire material above, and in the stacking process of the metal layer, the base plate is driven to move in the horizontal direction by the movement of a first motor and a second motor, so that themetal layer is melt-molded on the baseplate; the baseplate is driven to move in the vertical direction by the movement of a third motor, so that the metal layer is stacking-molded until printing is completed. The continuous wire feeding autonomous induction heating additive manufacturing device and method provided by the invention have the advantages of efficiently realizing the automatic production of aluminum alloy parts in the practical production, solving the problems of low production efficiency and high cost existing in the prior art, and simultaneously ensuring that the molded aluminumalloy parts have the advantages of high molding precision, excellent comprehensive mechanical properties and the like.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a continuous wire feeding autonomous induction heating additive manufacturing device and method. Background technique [0002] Aluminum alloy has the advantages of high specific strength, strong corrosion resistance, and good heat transfer performance, and has been widely used in automobiles, aerospace, electronic devices and other fields. The traditional subtractive manufacturing method will cause a great waste of aluminum alloy raw materials. At the same time, it is limited by the difficulty of processing aluminum alloy components with complex shapes, resulting in the production of aluminum alloy parts with two disadvantages: long design cycle and high processing cost. It is increasingly difficult to meet the requirements of today's market. The additive manufacturing method is based on the three-dimensional CAD model, and adopts the layer-by-layer preparation method to ea...

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Problems solved by technology

Among them, laser as a heat source is a common means. Chinese patent CN201710787444.8 proposes an aluminum alloy twin-wire laser additive manufacturing method, although it adopts a laser beam to melt two welding wires at the same time for additive manufacturing to improve productivity. , but considering that the aluminum alloy has a high reflectivity to the laser (usually over 80%), and the aluminum alloy itself has good thermal conductivity, so the absorption of the laser energy in the aluminum alloy additive manufacturing process is insufficient, and it is difficult to meet the Cost and Efficiency Requirements

Electron beam as a heat source is also a good method. Chinese patent CN201610478786.7 proposes an electron beam fuse additive manufacturing equipment, which can effectively avoid the reflection of electron beam energy and make the forming rate fast, but it requires strict The vacuum environment has high requirements on equipment and process conditions, and is often limited when forming certain large-scale specific structures, resulting in high raw material costs and time costs.

Arc additive manufacturing technology is another common method. Chinese patent CN201610564531.2 proposes an arc 3D printing method for aluminum alloy components, which has the characteristics of simple forming equipment and high forming efficiency, but the arc itself The stability is poor, and the forming process is often difficult to control, resulting in problems such as collapse of the molten accumulation layer, resulting in poor forming quality and forming accuracy, and it is difficult to meet the forming requirements of aluminum alloy parts

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