JPS56136285A - Electron beam welding apparatus - Google Patents

Electron beam welding apparatus

Info

Publication number
JPS56136285A
JPS56136285A JP3877080A JP3877080A JPS56136285A JP S56136285 A JPS56136285 A JP S56136285A JP 3877080 A JP3877080 A JP 3877080A JP 3877080 A JP3877080 A JP 3877080A JP S56136285 A JPS56136285 A JP S56136285A
Authority
JP
Japan
Prior art keywords
welding
electron beam
point
changed
focus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3877080A
Other languages
Japanese (ja)
Inventor
Hohachi Kaneuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3877080A priority Critical patent/JPS56136285A/en
Publication of JPS56136285A publication Critical patent/JPS56136285A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent cracks caused by welding when electron beam welding is made, by changing the focus point of electron beam at the time of slope down in the electron beam welding machine.
CONSTITUTION: The welding is commenced by focusing electron beam 7 generated from electron gun 11 as shown by solid line 14 through electromagnetic lense 12 and irradiating the focused electron beam on welding starting point 3 of welding line 2 while welding object 1 having welding line 2 is carried along the direction of arrow 6. When entering into welding terminating area 3'W3", the focus point of electron beam 7 is changed into the one shown by broken line 15 at terminating operation starting point 3' by the control device, and the welding part is put into narrow sharp melting condition. Moreover, at the control device, relay contact point 21 is turned ON at terminating operation starting point 3', and relay 22 is excited and changed along the direction along which focus current IF 25 set by volume 24 increases from focus point controlling DC power source 23. In this way, the focus point is changed.
COPYRIGHT: (C)1981,JPO&Japio
JP3877080A 1980-03-26 1980-03-26 Electron beam welding apparatus Pending JPS56136285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3877080A JPS56136285A (en) 1980-03-26 1980-03-26 Electron beam welding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3877080A JPS56136285A (en) 1980-03-26 1980-03-26 Electron beam welding apparatus

Publications (1)

Publication Number Publication Date
JPS56136285A true JPS56136285A (en) 1981-10-24

Family

ID=12534522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3877080A Pending JPS56136285A (en) 1980-03-26 1980-03-26 Electron beam welding apparatus

Country Status (1)

Country Link
JP (1) JPS56136285A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649920U (en) * 1992-11-09 1994-07-08 要一 赤山 Ruler for cutting plate
WO2020096558A1 (en) * 2018-11-06 2020-05-14 Joint Stock Company "Nvo "Chervona Hvilya" System for manufacturing of three dimensional objects
CN111761189A (en) * 2020-06-09 2020-10-13 中国船舶重工集团公司第七二五研究所 Window skin welding method for thin-wall high-temperature high-strength titanium alloy casting

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649920U (en) * 1992-11-09 1994-07-08 要一 赤山 Ruler for cutting plate
WO2020096558A1 (en) * 2018-11-06 2020-05-14 Joint Stock Company "Nvo "Chervona Hvilya" System for manufacturing of three dimensional objects
CN111761189A (en) * 2020-06-09 2020-10-13 中国船舶重工集团公司第七二五研究所 Window skin welding method for thin-wall high-temperature high-strength titanium alloy casting

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