DK201900019U3 - Welding System - Google Patents
Welding System Download PDFInfo
- Publication number
- DK201900019U3 DK201900019U3 DKBA201900019U DKBA201900019U DK201900019U3 DK 201900019 U3 DK201900019 U3 DK 201900019U3 DK BA201900019 U DKBA201900019 U DK BA201900019U DK BA201900019 U DKBA201900019 U DK BA201900019U DK 201900019 U3 DK201900019 U3 DK 201900019U3
- Authority
- DK
- Denmark
- Prior art keywords
- welding
- control device
- power supply
- welding electrode
- welded
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
- B23K9/0953—Monitoring or automatic control of welding parameters using computing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0258—Electric supply or control circuits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
- B23K9/1062—Power supply characterised by the electric circuit by using digital means with computing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F10/00—Apparatus for measuring unknown time intervals by electric means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Arc Welding Control (AREA)
- Arc Welding In General (AREA)
Abstract
Et svejsesystem omfattende en strømforsyning (1), en styreindretning (2) til at regulere strømforsyningen og en TIG-svejseelektrode (4), som kan forbindes til strømforsyningen. Systemet omfatter også midler til at måle tid, og styreindretningen (2) er indrettet til at ændre den elektriske strøm, som skal ledes til svejseelektroden (4), jævnt som en funktion af tiden.A welding system comprising a power supply (1), a control device (2) for controlling the power supply and a TIG welding electrode (4) which can be connected to the power supply. The system also includes means for measuring time, and the control device (2) is arranged to change the electrical current to be fed to the welding electrode (4) evenly as a function of time.
Description
SVEJSESYSTEMWELDING SYSTEM
GENSTAND FOR OPFINDELSENSUMMARY OF THE INVENTION
Opfindelsen angår et svejsesystem, som omfatter en strømforsyning, en styreindretning til at regulere strømforsyningen og en TIG-svejseelektrode, som kan forbindes til strømforsyningen.The invention relates to a welding system comprising a power supply, a control device for regulating the power supply and a TIG welding electrode which can be connected to the power supply.
KENDT TEKNIK OG FORMÅL MED OPFINDELSENPRIOR ART AND PURPOSE OF THE INVENTION
Når man svejser emner sammen, stiger temperaturen i svejsningen typisk. Temperaturstigningen har på sin side mange bivirkninger for både selve svejsningen og krystalstrukturen og styrken af de emner, som skal svejses. Den mest synlige bivirkning ved temperaturstigningen af svejsningen er, at svejsningens overflade sænkes, efterhånden som temperaturen stiger. Desuden stiger temperaturen af svejsningen ofte så meget, at svejsningens overflade sænkes for meget, hvorved kvaliteten af svejsningen ikke længere er acceptabel. Svejsningen må da afbrydes, indtil de emner, der skal svejses, er tilstrækkeligt nedkølede. Dette indebærer naturligvis omkostninger, da arbejdet afbrydes. Temperaturen kan endvidere stige så meget, at der brændes et hul i det materiale, som skal svejses, eller der dannes uønskede buler på den anden side af svejsningen. Fejl som disse forringer egenskaberne hos svejseemnet i betydelig grad og er således uønskede. Til visse anvendelser, såsom fx ved samling af skibe eller olieboreplatforme ved svejsning, er denne type fejl uacceptable.When welding items together, the temperature of the welding typically increases. The rise in temperature, in turn, has many side effects for both the welding itself and the crystal structure and the strength of the items to be welded. The most noticeable side effect of the temperature rise of the weld is that the surface of the weld is lowered as the temperature increases. Furthermore, the temperature of the weld often rises so much that the surface of the weld is lowered too much, thus the quality of the weld is no longer acceptable. Welding must then be interrupted until the items to be welded are sufficiently cooled. This, of course, involves costs as work is interrupted. In addition, the temperature can rise so much that a hole is burned in the material to be welded or unwanted bumps are formed on the other side of the weld. Errors such as these significantly impair the properties of the welding blank and are thus undesirable. For certain applications, such as when assembling ships or oil rigs for welding, this type of failure is unacceptable.
TIG-svejsning (Tungsten Inert Gas Arc Welding) er en buesvejsningsmetode, ved hvilken der anvendes elektricitet til at danne en bue, som brænder, omgivet af en afskærmningsgas, der kommer fra svejseelektroden, mellem elektroden og det emne, der skal svejses. Elektroden er typisk fremstillet af ikke-forbrugeligt wolfram, og afskærmningsgassen er fx argon. TIG-svejsning kan således udføres uden et fyldstof eller alternativt med et fyldstof. Fyldstoffet kan fx være 1,5-3 mm tyk metaltråd (typisk fremstillet af det samme materiale som det materiale, der skal svejses). Fyldstoffet kan afhængigt af metoden tilføres enten med hånden eller med en maskine.TIG welding (Tungsten Inert Gas Arc Welding) is an arc welding method that uses electricity to generate an arc that burns, surrounded by a shielding gas coming from the welding electrode, between the electrode and the subject to be welded. The electrode is typically made of non-consumable tungsten, and the shielding gas is, for example, argon. Thus, TIG welding can be performed without a filler or alternatively with a filler. The filler may be, for example, 1.5-3 mm thick metal wire (typically made of the same material as the material to be welded). Depending on the method, the filler can be applied either by hand or with a machine.
TIG-svejsning anvendes typisk ved krævende anvendelser, såsom til svejsning af rustfrit stål eller aluminium. Ved TIG-svejsning er der også en høj risiko for, at der brændes et hul i det materiale, som skal svejses, hvis temperaturen stiger for meget under svejsningen.Typically, TIG welding is used in demanding applications, such as stainless steel or aluminum welding. In TIG welding, there is also a high risk of burning a hole in the material to be welded if the temperature rises too much during welding.
Et formål med opfindelsen er således at opnå et svejsesystem, med hvilket problemerne ved den kendte teknik undgås, og der opnås et system, med hvilket det er muligt at svejse selv tynde emner pålideligt og effektivt og opnå et ønsket, rent og stærkt slutresultat.An object of the invention is thus to obtain a welding system by which the problems of the prior art are avoided and a system is obtained by which it is possible to weld even thin items reliably and efficiently and obtain a desired, clean and strong end result.
BESKRIVELSE AF OPFINDELSENDESCRIPTION OF THE INVENTION
Opfindelsen angår et svejsesystem, som omfatter en strømforsyning, en styreindretning til at regulere strømforsyningen og en TIG-svejseelektrode, som kan forbindes til strømforsyningen. Det er karakteristisk for opfindelsen, at systemet desuden omfatter midler til at måle tid, og at styreindretningen er indrettet til at ændre den elektriske strøm, der skal ledes til svejseelektroden, jævnt som en funktion af tiden.The invention relates to a welding system comprising a power supply, a control device for regulating the power supply and a TIG welding electrode which can be connected to the power supply. It is characteristic of the invention that the system further comprises means for measuring time and that the control device is arranged to change the electrical current to be fed to the welding electrode evenly as a function of time.
I et system ifølge opfindelsen optimeres svejsestrømmen dermed, således at temperaturen af det materiale, som skal svejses, ikke stiger for meget, eller alternativt således at temperaturen af det materiale, som skal svejses, forbliver høj nok afhængigt af det mål, som skal svejses.In a system according to the invention, the welding current is thus optimized so that the temperature of the material to be welded does not rise too much, or alternatively so that the temperature of the material to be welded remains high enough depending on the target to be welded.
Systemet muliggør svejsning af selv sådanne materialer, som hidtil har været næsten umulige at arbejde med. Især bliver svejsning af aluminium betydeligt lettere, og svejsning af en længere ensartet svejsning lykkes lettere end med systemer fra den kendte teknik. Ved at anvende systemet er det også muligt at svejse genstande, i hvilke det ikke er tilladt at se svejsemærker på den anden side af det svejsede produkt. Desuden gør systemet det muligt at svejse uafbrudt i længere tid, hvorved omkostningerne falder, og arbejdet bliver hurtigere. Der er også behov for mindre materiale til at blive svejset og mindre muligt fyldstof, da det ikke bliver nedbrudt på grund af temperaturstigningen. Der forbruges desuden selv 20% mindre energi end tidligere.The system enables welding of even such materials, which have so far been almost impossible to work with. In particular, aluminum welding becomes considerably easier, and welding a longer uniform welding succeeds more easily than with prior art systems. By using the system it is also possible to weld objects in which it is not allowed to see welding marks on the other side of the welded product. In addition, the system makes it possible to weld continuously for a longer period, which reduces costs and speeds up the work. Also, less material is needed to be welded and less possible filler as it does not degrade due to temperature rise. Moreover, even 20% less energy is consumed than before.
Svejsesystemet omfatter således en strømforsyning, som fx også kan kaldes en svejsetransformer. Strømforsyningen ændrer strømmen i elnettet til at være egnet til svejsning, baseret på reguleringen af styreindretningen. Styrken i strømforsyningen kan fx være 4-8 kW, og den strøm, der skal opnås derfra, kan fx være 3-220 A.The welding system thus comprises a power supply, which can, for example, also be called a welding transformer. The power supply changes the current in the power grid to be suitable for welding, based on the control of the control device. For example, the power of the power supply may be 4-8 kW, and the power to be obtained from it can be, for example, 3-220 A.
Endvidere omfatter svejsesystemet en styreindretning til at regulere strømforsyningen, hvilken styreindretning er indrettet til at ændre den elektriske strøm, som skal ledes til svejseelektroden, jævnt som en funktion af tiden. Elektrisk strøm ændres således lineært som en funktion af tiden, og hastigheden for ændringen vælges afhængigt af det materiale, som skal svejses, og dets tykkelse. Hastigheden for ændringen afhænger således bl.a. af materialets varmeledningsevne. Systemet omfatter således midler til måling af tid, såsom fx et ur. Start- og slutværdier for den elektriske strøm (dvs. størrelsen af den elektriske strøm ved begyndelsen af svejsningen og størrelsen af den elektriske strøm ved slutningen af svejsningen) samt den tid, der skal anvendes til svejsningen, sættes således ind i systemet.Furthermore, the welding system comprises a control device for regulating the power supply, which control device is arranged to change the electrical current to be fed to the welding electrode evenly as a function of time. Thus, electric current changes linearly as a function of time, and the rate of change is selected depending on the material to be welded and its thickness. The speed of the change thus depends, inter alia, on of the thermal conductivity of the material. The system thus comprises means for measuring time, such as, for example, a clock. Starting and ending values of the electric current (ie the amount of electrical current at the beginning of the welding and the amount of the electric current at the end of the welding) as well as the time to be used for the welding are thus entered into the system.
Svejsesystemet omfatter også en TIG-svejseelektrode, som kan forbindes til strømforsyningen. En hvilken som helst i og for sig kendt TIG-svejseelektrode kan forbindes til systemet ifølge opfindelsen. Desuden er det muligt også at anvende andre typer svejseelektroder, såsom fx MIG-elektroder eller stavelektroder. Svejsesystemet er således egnet til svejsning, hvor der ikke anvendes noget fyldstof, og til svejsning, hvor der anvendes fyldstof. Svejseelektroden kan også kaldes loddekolbe, stav eller dyse.The welding system also includes a TIG welding electrode which can be connected to the power supply. Any TIG welding electrode known per se can be connected to the system of the invention. In addition, it is also possible to use other types of welding electrodes, such as, for example, MIG electrodes or rod electrodes. Thus, the welding system is suitable for welding where no filler is used and for welding where filler is used. The welding electrode can also be called a soldering iron, rod or nozzle.
Med systemet ifølge opfindelsen er det også muligt at udføre såkaldt tovejssvejsning, hvilket typisk ikke er muligt. Svejsning udføres faktisk sædvanligvis kun i én retning, fordi svejsningen og det materiale, der omgiver den, er så varm, at svejsningen ikke igen kan behandles med svejseelektroden med det samme, da dette ville medføre beskadigelse af svejsningen. Tovejssvejsning er især nødvendig ved vanskelige mål, og dette betyder, at det sted, der skal svejses, først kan svejses i en første retning, og herefter er det muligt at vende tilbage en smule fx for at forbedre svejsningen. Systemet ifølge opfindelsen muliggør dette, da svejsningens temperatur ikke stiger over en kritisk grænse.With the system according to the invention it is also possible to carry out so-called two-way welding, which is typically not possible. In fact, welding is usually carried out in only one direction because the welding and the material surrounding it are so hot that the welding cannot be treated again with the welding electrode immediately, as this would damage the welding. Two-way welding is especially necessary for difficult targets, and this means that the place to be welded can first be welded in a first direction, and then it is possible to return slightly, for example, to improve welding. The system according to the invention makes this possible as the temperature of the welding does not rise above a critical limit.
Ifølge en udførelsesform for opfindelsen er styreindretningen indrettet til at formindske den elektriske strøm, som skal ledes til svejseelektroden, jævnt som en funktion af tiden. Dette er det mest typiske tilfælde, da overophedning af svejsningen og af det materiale, der omgiver den, på denne måde undgås ved svejsning under normale betingelser. Ifølge en anden udførelsesform for opfindelsen er styreindretningen indrettet til at forøge den elektriske strøm, som skal ledes til svejseelektroden, jævnt som en funk tion af tiden. Dette er fx nødvendigt ved svejsning under vand, da vandet effektivt sænker temperaturen af det materiale, som skal svejses, hvorved det er nødvendigt at forøge den elektriske strøm, således at svejsning i længere tid er muligt.According to an embodiment of the invention, the control device is arranged to reduce the electric current to be fed to the welding electrode evenly as a function of time. This is the most typical case, as overheating of the weld and of the material surrounding it is thus avoided by welding under normal conditions. According to another embodiment of the invention, the control device is arranged to increase the electrical current to be conducted to the welding electrode evenly as a function of time. This is necessary, for example, in welding under water, since the water effectively lowers the temperature of the material to be welded, whereby it is necessary to increase the electric current so that welding is possible for a longer time.
Svejsesystemet kan desuden omfatte en temperatursensor, som er forbundet til svejseelektroden. Ved hjælp af en temperatursensor er det muligt at overvåge temperaturen af det materiale, som skal svejses, og dermed at forøge reguleringen af systemet. Fx er det muligt at indrette styreindretningen således, at hvis temperatursensoren indikerer, at temperaturen er steget over (tilsvarende er faldet under) en foruddefineret grænse, ændres den elektriske strøm (forøges, tilsvarende formindskes) hurtigere end foruddefineret for at opnå et godt svejseresultat.The welding system may further comprise a temperature sensor which is connected to the welding electrode. By means of a temperature sensor it is possible to monitor the temperature of the material to be welded and thus to increase the regulation of the system. For example, it is possible to arrange the control device such that if the temperature sensor indicates that the temperature has risen (correspondingly has fallen below) a predefined limit, the electric current (increased, correspondingly reduced) is changed faster than predefined to obtain a good welding result.
Når der udføres svejsning i små serier, kan temperatursensoren anvendes til at definere en optimal hastighed for ændring af den elektriske strøm. Ved at gøre dette er det muligt at definere start- og slutværdierne for den elektriske strøm, som er egnede til præcist de materialer og de emner, som skal svejses, hvorefter en temperatursensor ikke længere er nødvendig.When welding in small series, the temperature sensor can be used to define an optimum rate for changing the electric current. By doing this, it is possible to define the initial and final values of the electrical current suitable for precisely the materials and the items to be welded, after which a temperature sensor is no longer needed.
Særligt foretrukket er styreindretningen indrettet til at identificere starten og slutningen af svejsningen, hvorved indretningen automatisk starter en ny svejsning ud fra en foruddefineret værdi for den elektriske strøm og ændrer den på en foruddefineret måde, uden at brugeren er nødt til at foretage ændringer i programmeringen efter hver svejsning.Particularly preferred is the control device adapted to identify the start and end of the welding, whereby the device automatically starts a new welding from a predefined value for the electric current and changes it in a predefined manner without the user having to make any changes to the programming after each weld.
Svejsestrømmen kan indrettes til at blive formindsket eller forøget under et foruddefineret tidsrum, fx med 10-20%, 40-50% eller 60-70%. Længden af det foruddefinerede tidsrum kan fx være 1-500 s.The welding current can be arranged to be reduced or increased over a predefined period, for example by 10-20%, 40-50% or 60-70%. For example, the length of the predefined period may be 1-500 seconds.
DETALJERET BESKRIVELSE AF FIGURENDETAILED DESCRIPTION OF THE FIGURE
Figur 1 viser skematisk et svejsesystem ifølge en udførelsesform for opfindelsen. Figuren viser en strømforsyning 1 og en styreindretning 2 til at regulere den. Strømforsyningen 1 og styreindretningen 2 er naturligvis forbundet til hinanden. I den viste udførelsesform er forbindelsen foretaget ved hjælp af en tråd, men forbindelsen kan også foretages trådløst. Styresystemet har desuden en TIG-svejseelektrode 4, som i denne udførelsesform er forbundet med en håndtagsdel 3 for at gøre det nemmere at bruge. Svejseelektroden 4 er forbundet til strømforsyningen 1 via håndtagsdelen 3.Figure 1 shows schematically a welding system according to an embodiment of the invention. The figure shows a power supply 1 and a control device 2 for controlling it. The power supply 1 and the control device 2 are, of course, interconnected. In the embodiment shown, the connection is made by a wire, but the connection can also be made wirelessly. The control system also has a TIG welding electrode 4, which in this embodiment is connected to a handle part 3 to make it easier to use. The welding electrode 4 is connected to the power supply 1 via the handle part 3.
I denne udførelsesform har styreindretningen 2 og strømforsyningen 1 begge en bru5 gergrænseflade, som gør det muligt at programmere dem. Brugergrænsefladen omfatter typisk et display og midler til at tilføre instruktioner, fx knapper.In this embodiment, the control device 2 and the power supply 1 both have a user interface enabling them to be programmed. The user interface typically includes a display and means for adding instructions, such as buttons.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FIU20184046 | 2018-03-19 | ||
| FIU20184046U FI12431U1 (en) | 2018-03-19 | 2018-03-19 | Welding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK201900019U3 true DK201900019U3 (en) | 2019-04-17 |
Family
ID=65996805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKBA201900019U DK201900019U3 (en) | 2018-03-19 | 2019-03-19 | Welding System |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE202019100751U1 (en) |
| DK (1) | DK201900019U3 (en) |
| FI (1) | FI12431U1 (en) |
| FR (1) | FR3078910B3 (en) |
| SE (1) | SE543555C2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2808116A3 (en) * | 2013-05-29 | 2015-10-07 | Protomet Särkiniemi T:mi | Welding control method and control device |
| US10967451B2 (en) * | 2016-03-31 | 2021-04-06 | Illinois Tool Works Inc. | Methods and apparatus to control hot-start weld current for arc ignition |
-
2018
- 2018-03-19 FI FIU20184046U patent/FI12431U1/en active IP Right Grant
-
2019
- 2019-02-11 DE DE202019100751.6U patent/DE202019100751U1/en not_active Expired - Lifetime
- 2019-02-22 FR FR1901824A patent/FR3078910B3/en not_active Expired - Fee Related
- 2019-03-06 SE SE1930081A patent/SE543555C2/en not_active IP Right Cessation
- 2019-03-19 DK DKBA201900019U patent/DK201900019U3/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI12431U1 (en) | 2019-07-15 |
| FR3078910A3 (en) | 2019-09-20 |
| SE1930081A1 (en) | 2019-09-20 |
| FR3078910B3 (en) | 2020-03-27 |
| SE543555C2 (en) | 2021-03-30 |
| DE202019100751U1 (en) | 2019-03-20 |
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