Electric arc additive manufacture device using magnetic field and ultrasonic vibration and method

Abstract

The invention belongs to the field of additive manufacturing, and particularly relates to an electric arc additive manufacture device using a magnetic field and ultrasonic vibration and a method. Thedevice comprises an additive welding gun, a magnetic control coil, a magnetic control power supply, an ultrasonic vibration generating device and an ultrasonic vibration power supply. The magnetic control power supply controls a magnetic control coil coaxially arranged on the additive welding gun in a sleeving mode to generate the longitudinal alternating magnetic field so as to control the electric arc form, the molten drop transition behavior and the molten pool flowing behavior; and meanwhile, the ultrasonic vibration power supply controls the ultrasonic vibration generating device fixed atthe bottom of a substrate to generate ultrasonic vibration, so that the substrate and the whole additive part are subjected to ultrasonic vibration, and a molten pool is under the condition of ultrasonic vibration in the whole forming and solidifying process. According to the device and the method, the forming precision and quality of weld joints can be effectively controlled, the forming effectis obviously improved, crystal grains are effectively refined, the crystal orientation is reduced, the porosity is reduced, residual stress is fully released and the structure property of the additivepart is greatly improved.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a magnetic field composite ultrasonic vibration arc additive device and method. Background technique [0002] Arc additive manufacturing technology refers to a forming technology that uses an electric arc as a heat source to melt the wire and then accumulate it according to the designed path to form a workpiece. Its essence is to apply the optimized welding method to the additive field. The parts formed by arc additive manufacturing technology are all composed of weld seams, which have high density and uniform chemical and structural composition, and under certain conditions, they have better toughness and higher strength than forgings. Since the formed parts have undergone repeated heating, which is equivalent to multiple tempering and quenching, this makes the arc additive manufacturing technology more advanced than the traditional forging technology. [0003...

AI Technical Summary

Problems solved by technology

However, the ultrasonic impact head of this method acts on the surface of the solidified weld seam, which has a limited effect on the liquid molten pool itself, and cannot control the arc shape, droplet transfer and other processes.

Images