Adjustable magnetic field cooperation electric arc additive system and additive method

Abstract

The invention belongs to the field of additive manufacturing, and particularly relates to an adjustable magnetic field cooperation electric arc additive system and additive method. The system comprises an arc deposition device and a magnetic field generating device, wherein the arc deposition device comprises a welding gun; the magnetic field generating device is used for generating an adjustablemagnetic field and comprises a magnetic flaw detector; the magnetic flaw detector comprises two magnetic poles; and the two magnetic poles are rotationally connected with a main body of the magnetic flaw detector and are arranged on two sides of the welding gun. Through the magnetic field generating device provided by the invention, an external magnetic field in more than one direction can be generated, when a transverse magnetic field is applied, molten metal and heat can be conveyed to the rear of a molten pool and the crystal face of the molten pool can be washed directly, so that the temperature gradient and the solute concentration at the front end of a dendrite crystal are reduced, and the component supercooling at the front end of the dendrite crystal is increased, thereby being beneficial to refining crystal grains; when a longitudinal magnetic field is applied, the aspect ratio of a single weld bead can be improved, so that the lapping precision and the surface quality of a deposited layer are improved; and in theory, the system can meet the need to generate magnetic fields in any direction.

Description

Technical field [0001] The invention belongs to the field of additive manufacturing, and specifically relates to an adjustable magnetic field synergistic arc additive system and an additive method. Background technique [0002] Arc additive manufacturing technology is an additive manufacturing technology that uses wire as a forming material and arc heat as a heat source, and then accumulates layers on a substrate according to a set forming path, and layer by layer until the metal parts are formed. It has the characteristics of high deposition efficiency and high material utilization. It has broad application prospects in the fields of rapid manufacturing of large and medium-sized metal parts, repair and remanufacturing, and because its manufacturing cost is lower than that of additive manufacturing technology that uses laser as a heat source, it is formed with the high-precision manufacturing of laser additive manufacturing. Complementary advantages. [0003] However, in the arc ...

AI Technical Summary

Problems solved by technology

[0005] To sum up, the existing magnetic field cooperative arc additive system can only apply a magnetic field in a certain direction, and cannot better optimize the structure of the material.

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