Device for researching evolution process of selective laser melting molten pool

Abstract

The invention relates to a device for researching the evolution process of a selective laser melting molten pool. The device for researching the evolution process of the selective laser melting molten pool comprises a first glass sheet, a second glass sheet, a clamp and a laser system, wherein the first glass sheet is provided with small holes capable of being filled with metal powder; the second glass sheet covers the first glass sheet; the clamp is used for clamping the first glass sheet and the second glass sheet; the laser system is used for positioning and melting the metal powder in the small holes; the small holes are formed in the face, attached to the second glass sheet, of the first glass sheet. According to the device for researching the evolution process of the selective laser melting molten pool provided by the invention, by means of the device, 'capture 'of a single molten pool in the SLM process can be achieved, operation is easy, the needed time is short, repeated operation can be achieved, the service life of the device is long, and the glass sheets with the small holes can be filled with various different metal materials, so that the device can be used for researching multiple material systems; and quartz glass is adopted, laser selection is not affected, laser wavelength selectivity is high, continuous laser and pulse laser can be adopted, and the interaction characteristics of laser with different characteristics and the metal powder can be researched.

Description

technical field [0001] The invention relates to the technical field of metal additive manufacturing, in particular to a device for studying the evolution process of laser selective melting molten pools. Background technique [0002] Selective Laser Melting (SLM) technology is an additive manufacturing method that uses continuous laser or pulsed laser as a heat source to selectively melt metal powder according to the CAD three-dimensional model, and superimposes it layer by layer to realize the molding of solid parts. This technology has the advantages of a wide range of forming materials, excellent mechanical properties of formed parts, high density, high precision of forming parts, and the ability to form parts with complex geometry. It has been widely used in aerospace, automotive, military and other fields. [0003] Since the advent of the laser, the research on the interaction between the laser and the continuum has been greatly developed. For example, in the field of la...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of effective research methods for the formation process of a single molten pool.

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