Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electron beam source and use of same

An electron beam source, electron beam technology, applied in electron beam welding equipment, discharge tube electron gun, discharge tube solid thermionic cathode, etc., can solve the problem of low electron beam intensity, and achieve the effect of increasing the current range and fast switching

Pending Publication Date: 2020-09-25
阿尔卡姆公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many applications, especially in additive manufacturing, it is problematic that larger cathodes lead to lower beam intensities at low beam currents

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
  • Electron beam source and use of same
  • Electron beam source and use of same
  • Electron beam source and use of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Various embodiments of the invention will now be described in more detail with reference to the accompanying drawings, which illustrate some, but not all embodiments of the invention. Indeed, embodiments of the invention may be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly known and understood by one of ordinary skill in the art to which this invention belongs. Unless otherwise stated, the word "or" is used herein in both an alternative and a conjunction sense. Like numbers refer to like elements.

[0028] Furthermore, in order to facilitate the understanding of the present invention, several terms are defined below. Terms defined herein have meanings commonly understood by those of ordinar...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

Provided is an electron beam source (200) for generating an electron beam and comprising a cathode (240), an anode and a grid for regulating an electron beam current. The cathode has a base (242) anda protrusion (244) with sidewalls (247) and a top surface (248). The base surface and the top surface are essentially flat. The base surface and the top surface are arranged at a predetermined distance D from each other. The base is larger than the protrusion. The electron beam source further comprising a control unit adapted for changing an applied voltage to the grid for switching a spot size ofthe electron beam on a target surface between at least a first a first spot size corresponding to emission from the top surface of the cathode only and to a second spot size corresponding to emissionfrom the top surface and the base surface of the cathode.

Description

technical field [0001] Various embodiments of the invention relate to an electron generating assembly, an electron beam source, and a method for additively manufacturing a three-dimensional object by sequentially melting layers of powder material using the electron beam source. Background technique [0002] Freeform or additive manufacturing is a method of forming three-dimensional objects by sequentially melting selected portions of a powder layer applied to a worktable. [0003] The additive manufacturing apparatus may comprise a table on which a three-dimensional object is to be formed, a powder dispenser or powder distributor arranged to place a thin layer of powder on the table to form a powder bed, a powder dispenser for delivering energy to the powder to melt the powder a high energy beam, an element that controls the energy released by the energy beam on the powder bed to form cross-sections of the three-dimensional object by melting portions of the powder bed, and a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/13H01J1/16H01J3/02B33Y30/00B29C64/153
CPCH01J1/135H01J1/16H01J3/027B29C64/153B33Y30/00B29C64/268B23K15/0086H01J37/3023B33Y50/02B33Y10/00H01J37/3178
Inventor 马蒂亚斯·法杰
Owner 阿尔卡姆公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com