Selective laser melting SLM formation cylinder in high-intensity magnetic field

Abstract

The invention relates to a selective laser melting SLM formation cylinder in a high-intensity magnetic field and belongs to the technical field of 3D printing material additive manufacturing. The invention provides the selective laser melting SLM formation cylinder in the high-intensity magnetic field, wherein parts and powder in the formation cylinder can be heated to prevent the thin-walled parts of the parts from being cooled too quickly, so that the internal temperature distribution of the parts is tend to be uniform. The technical scheme adopted is as follows: a hydraulic cylinder is arranged in the cylinder body, a bottom plate is arranged on a piston rod of the hydraulic cylinder, a heating tube and a first temperature-sensing galvanic couple are arranged in the wall body of the cylinder body, an insulating layer is arranged outside the cylinder body, an electromagnetic inductor and a magnetic field measuring instrument are arranged in the upper part of the cylinder body, a magnet exciting coil is arranged in the electromagnetic inductor, a medium-frequency power supply is connected to the electromagnetic inductor, a shielding hood is arranged on the top of the cylinder body, and the heating tube, the electromagnetic inductor, the medium-frequency power supply and the magnetic field measuring instrument are connected to a master control system. The selective laser melting SLM formation cylinder in the high-intensity magnetic field is widely applied to selective laser melting SLM processes.

Description

technical field [0001] The invention relates to a selective laser melting SLM forming cylinder under a strong magnetic field, belonging to the technical field of 3D printing additive manufacturing. Background technique [0002] 3D printing (additive manufacturing) technology is a technology that uses CAD design data to manufacture solid parts by layer-by-layer accumulation of materials. Compared with traditional cutting processing, it is a "bottom-up" material accumulation manufacturing method. Additive manufacturing technology does not require traditional tools, fixtures, and multiple processing procedures. Using 3D design data, parts of arbitrary complex shapes can be quickly and accurately manufactured on one device, thereby realizing "free manufacturing" and solving many problems that were difficult in the past. The forming of complex structural parts manufactured can greatly reduce the processing steps and processing cycle. And the more complicated the structure of the...

AI Technical Summary

Problems solved by technology

[0004] During the SLM forming process, the internal structure of the part is difficult to control, and there are often defects such as coarse dendrites and component segregation, which reduce the mechanical properties of the product.

At the same time, the internal temperature distribution of the formed part is uneven, and warping and deformation are prone to occur, thus affecting product quality

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