Steel/aluminum structure molten drop deposition composite TIG electric arc additive manufacturing device and method

Abstract

The invention discloses a steel / aluminum structure molten drop deposition composite TIG electric arc additive manufacturing device and method. A non-consumable electrode inert gas protection electric arc heat source and an induction coil heat source are adopted; melting the aluminum alloy raw material in the crucible through induction heating, and precisely and controllably depositing aluminum alloy molten drops into a molten pool generated on the surface of the steel substrate by a TIG electric arc in a pneumatic driving manner; a workpiece to be printed is modeled according to the geometrical shape of a part, and a substrate movement path is automatically planned by utilizing a substrate movement control system to determine a deposition track and the height of each layer. According to the method, high-quality combination of the aluminum alloy and the steel can be achieved, and the subsequent machining and using requirements are met; and the technological process is short, the deposition efficiency is high, and the material and equipment cost is low.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a steel / aluminum structure droplet deposition composite TIG arc additive manufacturing device and method. Background technique [0002] The steel / aluminum bimetallic structure has been more and more used in industries such as automobiles and ships because of its light weight, low cost, and superior comprehensive performance. However, due to the large difference in physical and chemical properties between steel and aluminum, and the temperature The gradient is large, and there is a problem that it is difficult to form a fusion zone and a high-strength metallurgical bond. [0003] At present, there is an existing method for induction rolling composite connection of steel and aluminum dissimilar metals in automobile body, including induction heating power supply, driving device, induction heater and rolling device, which can make the heat source directly act on the s...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a steel / aluminum structure droplet deposition composite TIG arc additive manufacturing device and method to solve the problems existing in the prior art due to the gap between steel and aluminum. There are large differences in physical and chemical properties between them, and the temperature gradient of the molten pool is large, so it is difficult to form a fusion zone and a high-strength metallurgical bond.

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