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Convection device and convection method

A technology for installing substrates and extending directions, applied in the field of convection devices, can solve the problems of high cost, achieve the effects of reducing air volume requirements, reducing overall machine consumption, and facilitating laser focusing

Active Publication Date: 2019-06-28
HANS LASER TECH IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a convection device and a convection method in view of the high cost technical defect caused by the convection of the inert gas on the surface of the existing printing area.

Method used

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  • Convection device and convection method

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Embodiment Construction

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] An embodiment of the present invention provides a convection device, including a mounting substrate 1, a first guide 2, a second guide 3 and a drive mechanism, the mounting substrate 1 is located above the printing area 10, the first guide 2 and the second guide 3 are all arranged on the installation substrate 1, one end of the first guide 2 communicates with the air source, the other end of the first guide 2 is formed with a first gap 21, one end of the second guide 3 communicates with the outside world, and the second guide The other end of the member 3 is forme...

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Abstract

The invention belongs to the technical field of added material manufacturing, and in particular, relates to a convection device and a convection method. In the convection device, a first gap is formedin the other end of a first guide piece; a second gap is formed in the other end of the second guide piece; the first gap and the second gap are oppositely arranged to form a convection channel; thefirst guide piece and the second guide piece are both connected to a mounting substrate; and the mounting substrate is positioned above a printing area. When the printing is performed in one area of the printing area, a driving piece drives the first guide piece and the second guide piece to move corresponding to the printing area, so that the first gap and the second gap on the first guide piececorrespond to the printing area, convection air is always blown above the printing area to preferably take away sputtering and smoke to achieve laser focusing. In addition, the convection channel always corresponds to the printing area, so that the air volume requirement is greatly reduced, and the machine cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing preparation, and in particular relates to a convection device and a convection method. Background technique [0002] Factors such as the building platform of the additive manufacturing equipment, the temperature of the molding protection chamber, the oxygen concentration of the protection chamber, and the speed of the inert gas flowing over the powder surface will affect the process conversion and the formation of part defects. [0003] When printing, the laser focuses on the surface of the metal powder and passes quickly across it. At a certain moment, splashes and smoke will be generated near the molten pool, which will affect the laser focusing effect at the next moment, causing a large change in the temperature of the focus point. In addition, the sputtered particles are splashed on the surface of the processing area and mixed in the powder. These particles melt at higher tempe...

Claims

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Application Information

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IPC IPC(8): B22F3/00B33Y40/00B22F12/70
Inventor 王先礼喻鹏袁剑吕启涛高云峰
Owner HANS LASER TECH IND GRP CO LTD
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