Modular case body manufactured by metal laser additive

Abstract

The invention discloses a modular case body manufactured by a metal laser additive. The modular case body comprises a rigid case body and a flexible case body, wherein a reserved hole is formed in one case wall of the rigid case body; the case opening of the flexible case body hermitically communicates with the rigid case body through the reserved hole; a sealing isolation plate is arranged on a position, on the outer side of the reserved hole, on the rigid case body; an extraction opening and an inflation opening are formed in the case wall of the rigid case body; laser additive manufacturing equipment is mounted in the rigid case body; the extraction opening is externally connected with a vacuum pump; a first valve is additionally arranged on a gas path between the extraction opening and the vacuum pump; the inflation opening is externally connected with an inert gas source; a second valve is additionally arranged on a gas path between the inflation opening and the inert gas source; the rigid case body is externally connected with an inert gas self-circulating purification system which comprises an oxygen analyzer, a fan, a deaerator, a dust collector and a cooler; the gas inlet end of the fan hermitically communicates with the inside of the rigid case body through the oxygen analyzer; the gas outlet end of the fan hermitically communicates with the inside of the rigid case body through the deaerator, the dust collector and the cooler.

Description

technical field [0001] The invention belongs to the technical field of laser additive manufacturing, in particular to a modular box for metal laser additive manufacturing. Background technique [0002] Laser Additive Manufacturing technology (Laser Additive Manufacturing, referred to as LAM, commonly known as 3D printing technology), uses alloy powder as raw material, melts the alloy powder in situ through high-power laser, and makes the alloy powder in the molten state solidify rapidly and gradually deposition to make solid parts. [0003] The principle of laser additive manufacturing technology is as follows: first, use computer 3D software to design a 3D model of the part, and then perform layered slice processing on the 3D model in the computer to discretize the 3D model into a series of 2D layers, and finally use laser Scan and add alloy powder layer by layer, and finally convert the 3D model part into a solid part. [0004] From the point of view of complex-shaped pa...

AI Technical Summary

Problems solved by technology

[0008] However, after adopting the existing airtight atmosphere to protect the box body, it takes a lot of time to evacuate only a single vacuuming process, and in the subsequent vacuuming process, it is even more necessary to completely exhaust the inert gas in the whole box, After many pumping and filling processes, the consumption of inert gas is very high, which significantly increases the manufacturing cost of titanium alloy parts

Furthermore, the existing airtight atmosphere protection box is limited by its own size, and it will be powerless for titanium alloy parts that have exceeded its applicable size range, so it can only be forced to replace the airtight atmosphere protection box with a larger size, which directly leads to increased equipment cost

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