Control device and method for heat stress in powder bed type electron beam additive manufacturing

A control device and additive manufacturing technology, which is applied in the direction of additive manufacturing, additive processing, and process efficiency improvement, can solve the problems of long opening time of the baffle, pollution of the glass observation window, and high replacement frequency, so as to avoid cracks, The effect of small temperature difference and uniform temperature

Active Publication Date: 2016-04-20
QUICKBEAM CO LTD +1
View PDF8 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the baffle is opened each time for a long time, which is far longer than the exposure time required by the camera to capture an image.
Therefore, when the baffle is opened, the glass o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control device and method for heat stress in powder bed type electron beam additive manufacturing
  • Control device and method for heat stress in powder bed type electron beam additive manufacturing
  • Control device and method for heat stress in powder bed type electron beam additive manufacturing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044]The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0045] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

[0046] Such as figure 1 As shown, the present invention provides a control device for thermal stress in powder bed type electron beam additive manufacturing, wh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a control device for heat stress in powder bed type electron beam additive manufacturing. The control device comprises a transparent glass window located on a vacuum chamber and arranged in the shooting direction of a camera; the camera shoots images of the interior of the vacuum chamber through the glass window, and the shot images comprise a powder layer and the temperature distribution information of the powder layer; a rotating shaft which penetrates through the vacuum chamber in a sealing mode and can rotate is arranged on one side of the glass window and is fixedly connected to a baffle located in the vacuum chamber, and the baffle is driven by the rotating shaft to switch between the position of shielding the glass window and the position of avoiding the glass window. The invention further provides a control method for controlling the heat stress in additive manufacturing. According to the invention, the camera shoots the images of the interior of the vacuum chamber through the glass window, the shot images comprise the powder layer and the temperature distribution information of the powder layer, and therefore the heat stress in additive manufacturing can be controlled better; by arranging the baffle, the transparency of the glass window can be effectively maintained, and the replacement frequency of the glass window is lowered.

Description

technical field [0001] The invention relates to the technical field, in particular to a thermal stress control device and method in powder bed electron beam additive manufacturing. Background technique [0002] Additive manufacturing (3D printing) is a manufacturing technique that builds three-dimensional objects by successively fusing more than one thin layer of material. Powder bed electron beam additive manufacturing is a kind of additive manufacturing technology route. Its basic process steps are as follows: the powder supply and paving system spreads the powder material into a thin layer on the working platform, and the electron beam with high energy density A section of the three-dimensional object is scanned on the powder layer; after that, the working platform is lowered by a distance of the thickness of the powder layer, a new layer of powder is laid on the working platform, and the next section of the three-dimensional object is scanned by rays; the above steps are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22F3/105
CPCB22F10/00B22F10/368B22F12/226B22F10/366B22F10/85B22F12/90B22F10/28B22F10/362Y02P10/25
Inventor 郭超林峰葛文君张磊向虎
Owner QUICKBEAM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap