Method for actively controlling interlayer temperature of electric arc additive manufacturing through electromagnetic induction heating

Abstract

The invention discloses a method for actively controlling an interlayer temperature of electric arc additive manufacturing through electromagnetic induction heating. The method is characterized in that a forming system is mainly composed of a computer, an electric arc deposition control system, a six-joint robot I, a main control system I, a temperature closed-loop control system and the like; and the temperature closed-loop control system is composed of a temperature closed-loop control device II and a main control system II. An infrared thermometer, an electromagnetic induction heating coil and a cooling device are installed in the temperature closed-loop control device II. During an additive manufacturing process, the infrared thermometer is used for measuring the change of a surface temperature after accumulation of each layer is concluded, and transmitting the measured value to the computer in real time. According to a preset interlayer temperature, the computer controls the electromagnetic induction heating coil and the cooling device to apply an induction heating effect or a forced cooling effect on a part of pre-formed parts of a component through the main control system II, so as to realize the purpose of actively controlling the interlayer temperature. The invention provides an effective method for actively controlling the interlayer temperature of the electric arc additive manufacturing.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a method for actively controlling the interlayer temperature of arc additive manufacturing by electromagnetic induction heating. Background technique [0002] Additive manufacturing technology is based on the principle of discrete accumulation, with the aid of computer, using wire feeding or powder spreading, using high energy beams (laser, electron beam, plasma, arc) as heat source to deposit molten raw materials layer by layer Stacking realizes the mold-free and rapid prototyping manufacturing process of parts. Arc additive manufacturing technology is based on (TIG welding, MAG welding, MIG welding or CMT welding) arc as the heat source, using synchronous wire feeding to manufacture high-performance complex materials such as stainless steel, high-strength alloy steel and carbon steel. A process for a part. Compared with the additive manufacturing te...

AI Technical Summary

Problems solved by technology

However, controlling the interlayer temperature by increasing the interval time between layers not only greatly reduces the efficiency of arc additive manufacturing, but also makes it difficult to accurately control the range of interlayer temperature.

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