JPS5510305A - Start control method of keyhole welding - Google Patents

Start control method of keyhole welding

Info

Publication number
JPS5510305A
JPS5510305A JP8188578A JP8188578A JPS5510305A JP S5510305 A JPS5510305 A JP S5510305A JP 8188578 A JP8188578 A JP 8188578A JP 8188578 A JP8188578 A JP 8188578A JP S5510305 A JPS5510305 A JP S5510305A
Authority
JP
Japan
Prior art keywords
time
keyhole
travelling truck
production
make
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
JP8188578A
Other languages
Japanese (ja)
Inventor
Mitsuaki Haneda
Hironari Taguchi
Akiyoshi Imanaga
Koichiro Furusawa
Junichiro Morisawa
Nobukazu Yamamoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8188578A priority Critical patent/JPS5510305A/en
Publication of JPS5510305A publication Critical patent/JPS5510305A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obviate the production of internal defects by stopping the travelling truck which has already moved at the start part until a keyhole is formed or for the specified time immediate before this.
CONSTITUTION: Holding time Ts of start current Is is provided at the start part to make the shape 5 of reinforcement of weld smoother. At the same time, the travelling truck is temporarily stopped by the t time to allow penetration to increase during this time and make the keyhole easier to be formed, so that no defects such as inclusion of gas, etc. will be produced in the inside at the restarting of the travelling truck. This method reduces heat input given to molten pool because the travelling truck is held stopped from the start current Is lower than the current value IH at the keyhole welding, hence the production of burn-through is suppressed.
COPYRIGHT: (C)1980,JPO&Japio
JP8188578A 1978-07-07 1978-07-07 Start control method of keyhole welding Pending JPS5510305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8188578A JPS5510305A (en) 1978-07-07 1978-07-07 Start control method of keyhole welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8188578A JPS5510305A (en) 1978-07-07 1978-07-07 Start control method of keyhole welding

Publications (1)

Publication Number Publication Date
JPS5510305A true JPS5510305A (en) 1980-01-24

Family

ID=13758895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8188578A Pending JPS5510305A (en) 1978-07-07 1978-07-07 Start control method of keyhole welding

Country Status (1)

Country Link
JP (1) JPS5510305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018816A (en) * 1990-06-11 1991-05-28 Amp Incorporated Optical delay switch and variable delay system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132445A (en) * 1974-09-13 1976-03-19 Kubota Ltd PURAZUMAAAKUYOSETSUNOSUTAATOHOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132445A (en) * 1974-09-13 1976-03-19 Kubota Ltd PURAZUMAAAKUYOSETSUNOSUTAATOHOHO

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018816A (en) * 1990-06-11 1991-05-28 Amp Incorporated Optical delay switch and variable delay system

Similar Documents

Publication Publication Date Title
JPS5592285A (en) Welding method of hard metal
JPS5510305A (en) Start control method of keyhole welding
JPS53130241A (en) Welding method for manufacture of thick walled steel pipe
JPS5686676A (en) Gas welding method of cast iron
JPS5317903A (en) Manufacturing method of stator iron core
JPS529739A (en) Production method of muffler for two- wheeled automobile
JPS57165171A (en) Preventing method for oxidation of solder
JPS52105513A (en) Method and equipment for melting reduced iron
JPS54139851A (en) Plasma arc welding method
JPS5247299A (en) Continuous consturction method of double-bottom blocks
JPS56144862A (en) Method for improving melt-stuck metal by ultrasonic wave
JPS5495952A (en) Repairing method for vertical plane of large cast steel structure by building up
JPS53106647A (en) Regenerating method of flux for submerged arc welding
JPS5781954A (en) Forming method for edge welded joint
JPS56114576A (en) Welding method
JPS56134067A (en) Fillet build-up welding method
JPS53106315A (en) Charging method for iron ores to converter
JPS54105708A (en) Soldering method of terminalboard motor
JPS5471061A (en) Method of smoothing beads for build up welding
JPS57127587A (en) Welding method for preventing weld crack by electron beam
Zhornyak et al. Reduction-Decarburization Annealing of Sprayed Fe--Ni--C Alloys.--I
JPS5530388A (en) One side welding method using refractory material
JPS54158702A (en) Pump runner manufacturing method
JPS5332813A (en) Preferential oxidizing method for molten iron
JPS5527439A (en) Underwater welding method