WO2003011511A1 - Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen - Google Patents
Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen Download PDFInfo
- Publication number
- WO2003011511A1 WO2003011511A1 PCT/EP2002/008149 EP0208149W WO03011511A1 WO 2003011511 A1 WO2003011511 A1 WO 2003011511A1 EP 0208149 W EP0208149 W EP 0208149W WO 03011511 A1 WO03011511 A1 WO 03011511A1
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- WO
- WIPO (PCT)
- Prior art keywords
- welding
- curve
- measurement curve
- arc
- tolerance
- Prior art date
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Classifications
-
- 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
- B23K9/20—Stud welding
- B23K9/205—Means for determining, controlling or regulating the arc interval
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/004—Welding of a small piece to a great or broad piece
- B23K11/0046—Welding of a small piece to a great or broad piece the extremity of a small piece being welded to a base, e.g. cooling studs or fins to tubes or plates
- B23K11/0053—Stud welding, i.e. resistive
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
-
- 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
- B23K9/20—Stud welding
- B23K9/201—Stud welding of the extremity of a small piece on a great or large basis
Definitions
- the present invention relates to a method for short-time arc welding, in particular for stud welding, with the step of scanning a welding parameter, in particular the arc voltage, during at least a time section of the welding process in order to detect faults.
- the present invention relates to a short-time arc welding system for welding elements such as e.g. Metal bolts, on components such as Metal sheets, with a welding head device that raises and lowers an element relative to the component as part of a welding process, a power supply device that provides power for forming an arc between the component and the raised element, a measuring device that has at least one welding parameter, in particular the arc voltage , while scanning at least one time section of the welding process, and an evaluation device, to which the scanned measurement values of the welding parameter are fed in order to detect faults.
- a short-time arc welding system for welding elements such as e.g. Metal bolts, on components such as Metal sheets
- a welding head device that raises and lowers an element relative to the component as part of a welding process
- a power supply device that provides power for forming an arc between the component and the raised element
- a measuring device that has at least one welding parameter, in particular the arc voltage , while scanning at least one time section of the welding process
- Short-time arc welding is often referred to as stud welding, although studs are not exclusively welded.
- Stud welding is mainly, but not exclusively, used in vehicle technology.
- Metal elements such as metal bolts with and without threads, eyelets, Nuts etc. welded onto the sheet metal of the vehicle body.
- the metal elements then serve as anchors or fastening elements, for example to fix interior fittings.
- This object is achieved in the method for short-time arc welding mentioned at the outset in that the measurement curve determined from the scanning process is smoothed and then at least one tolerance curve is generated which has a pre-settable distance from the smoothed measurement curve, and in that the unsmoothed measurement curve with the Tolerance curve is compared to detect high-frequency interference.
- this object is achieved in that the evaluation device is designed to smooth and apply a measurement curve determined from the scanned measurement values of the welding parameter. finally generate at least one tolerance curve, which has a pre-adjustable distance from the smoothed measurement curve, and is designed to subsequently compare the unsmoothed measurement curve with the tolerance curve in order to detect high-frequency interference.
- the welding parameter monitoring can be optimized by the arc welding method or system according to the invention in order to increase the welding quality of the short-time arc welding connections.
- the method or system according to the invention makes it possible to identify these high-frequency disturbances in the arc voltage. As a result, suitable measures can be taken, for example issuing an alarm, incrementing an error counter, etc. Due to the fact that the tolerance curves are based on the smoothed measurement curve, low-frequency changes in the arc voltage are not considered as disturbances. Such low-frequency changes in the arc voltage can occur, for example, in the course of control processes on the arc voltage and should therefore not be assessed as faults in the present context.
- the arc voltage is a parameter that is particularly relevant for the quality of the welding process.
- all references to the arc voltage are also to be understood alternatively and / or accumulatively as references to other welding parameters such as the welding current, the stud path, etc.
- the section during which the welding parameter is scanned can either cover the entire time span of the welding process or only a part thereof.
- the scanning section can only begin when a certain lifting height is reached and can be ended before the element is completely lowered onto the component.
- the tolerance curve is arranged above the smoothed measuring curve in order to identify high-frequency disturbances that tear upwards relative to the smoothed measuring curve (peaks).
- the tolerance curve is arranged below the smoothed measuring curve in order to identify high-frequency disturbances that tear downwards relative to the smoothed measuring curve (drops).
- the ability to detect peaks means that short-term faults in the shielding gas sheath of the arc can be detected, especially when welding aluminum studs.
- the distance between the tolerance curve and the smoothed measurement curve is constant over the scanning section.
- At least two tolerance curves are generated which have two different distances in the same direction from the smoothed measurement curve, and the unsmoothed measurement curve is then compared with the two tolerance curves in order to find less strong and strong high-frequency disturbances to recognize.
- the welding parameter is scanned discretely.
- Discrete measured values can be processed particularly cheaply in digital signal processing.
- the measurement curve is smoothed by digital low-pass filtering of the measurement curve consisting of discrete measurement points.
- Digital low-pass filtering can be implemented, for example, in a digital signal processor in the form of an FIR filter.
- the sampling period is in the range between 100 ⁇ s and 1000 ⁇ s, in particular in the range between 200 ⁇ s and 500 ⁇ s.
- the low-pass filtering is carried out with a cut-off frequency in the range between 20 Hz and 400 Hz, in particular in the range between 50 Hz and 250 Hz.
- the frequency of the occurrence of high-frequency interference is recorded. In this way it is possible to detect the tendency of high-frequency interference such as peaks or drops to occur. For example, permanent changes in the welding conditions can occur as the welding system continues to operate. If necessary, this can be determined by detecting the frequency of the occurrence of high-frequency interference.
- the electrical current used to generate the arc is regulated to a constant value during the scanning section and the arc voltage is integrated over time in order to obtain a measure of the energy which is introduced into the welded connection.
- the energy introduced into the welded joint is also an important parameter for evaluating the quality of the welded joint.
- the energy can be calculated comparatively easily by integrating the arc voltage. Since the welding current remains constant due to the regulation, the integral of the arc voltage is directly proportional to the energy input.
- the power supply device is a constant current source.
- the welding process is usually monitored and evaluated in such a way that the welding parameter or parameters are first scanned over the entire scanning section. The scanned and stored measurement curve is then used to assess the welding process that has already taken place.
- FIG. 1 shows a schematic illustration of a short-time arc welding system according to the invention
- FIG. 2 shows a diagram of arc voltage over time to explain the method according to the invention for short-time arc welding
- FIG. 3 shows a view similar to FIG. 2 of a further embodiment of the method according to the invention for short-time arc welding
- Fig. 4 is a graph of energy entered into a welded joint over time to illustrate another aspect of the present invention.
- One or two welding heads 16 are connected to each feed unit 14, a single welding head 16 in the illustration in FIG. 1.
- a user interface 18 is also provided on the control and energy unit 12, via which a user can configure the welding system 10. Furthermore, system data, alarms etc. can be displayed on a display of the user interface 18.
- the welding system 10 is used to weld metal elements such as metal bolts 20 to metal components such as metal sheets 22.
- a typical area of application is vehicle technology.
- the welding system 10, or a plurality of such welding systems 10 is used to weld connecting elements such as metal bolts with and without threads, eyelets, nuts, etc. to vehicle body parts.
- the connecting elements serve as anchors for fastening, for example, interior fittings of the motor vehicle.
- the power supply device 24 is designed as a constant current source. It supplies a controlled constant current I, which is fed to the welding head 16 via the feed unit 14. The welding current I then flows through the metal element 20 and the metal component 22.
- the welding head can also include a combination of an electromagnet and a counter spring that presses the metal element 20 against the metal component 22.
- a welding process with the welding system 10 generally proceeds as follows. First, the element 12 is placed on the component 14 so that an electrical contact is made. Then a so-called bias current is switched on. Shortly afterwards, the element or metal element 20 is raised relative to the component or metal component 22 until a welding stroke height is reached. The bias current remains on during this time. An arc is drawn during the lifting of the component. The pre-current arc has sufficient energy to burn off or evaporate any contaminants, surface coatings, zinc, dry lubricants, oils etc. in the area of the weld.
- the welding system 10 has a measuring device 34, which measures the electric arc voltage U present between the element 20 and the component 22 during the welding process.
- the measuring device 34 transmits the measurement results via a signal line 36 to the evaluation device 26 of the control device 23.
- the evaluation device 26 evaluates the course of the arc voltage U during a welding process.
- the results of the evaluation are stored in a memory of the control device 23 and / or displayed via the user interface 18.
- the evaluation device 26 is also connected to the power supply device 24 via a signal line 38. Via the signal line 38, the power supply device 24 can be instructed to abort a welding process, at least during the pre-current phase, if one Fault is detected in real time by means of the arc voltage.
- the measurements of the measuring device 34 are stored in the control device 23 (or the evaluation device 26), as mentioned, and are analyzed after the welding process has been completed.
- FIG. 2 shows a diagram 50 of the arc voltage U over time.
- the course of the arc voltage U over a welding process is shown at 52.
- the arc voltage is initially zero, namely when the metal element 20 makes direct contact with the metal component 22.
- the arc voltage U increases until a certain level is reached. This level is approximately maintained over a welding section T s and then drops again. At the moment when the metal element 20 contacts the metal component 22 again, the arc voltage U is zero again.
- the arc voltage U is sampled discretely, with a sampling period T P , which can be, for example, 256 ⁇ s.
- the entire welding process can last for a period in the range of, for example, 6 to 200 ms.
- the measurement curve 52 of the arc voltage U sampled during a welding process can be compared, for example, with a fixed, preset threshold value (not shown). It is also possible to form an average value of the arc voltage U over time. It is possible to limit yourself to the welding section T s . An analysis is then possible on the basis of a comparison of the measurement curve 52 with the mean value.
- the measurement curve 52 is first smoothed, for example by low-pass filtering.
- the smoothed measurement curve is shown in dashed lines in FIG. 2 and provided with the reference number 54.
- the low-pass filtering can be carried out, for example, by digital signal processing on a digital signal processor in the control device 23 using known algorithms, for example by an FIR filter.
- the limit frequency of the low-pass filter is, for example, 125 Hz for a welding time T s of, for example, 100 ms. This approximately means that the measurement curve 54 contains no frequency components with a frequency greater than 125 Hz (corresponding to a period of 8 ms) ,
- the upper tolerance curve 56 and a lower tolerance curve 58 are then calculated for the smoothed measurement curve 54.
- the upper tolerance curve 56 has a constant distance 60 from the smoothed measurement curve 54 throughout the time.
- the lower tolerance curve 58 has a constant distance 62 from the smoothed measurement curve 54 throughout the time.
- the unsmoothed measurement curve 52 is then compared in the evaluation device 26 with both the upper and the lower tolerance curve 56, 58.
- the unsmoothed measurement curve 54 has an outlier upward (peak) 64, which lies outside the upper tolerance curve 56.
- the unsmoothed measurement curve 52 has an outlier downwards (drop) 66, in which the arc voltage U is below the lower tolerance curve 58.
- the unsmoothed measurement curve 52 also has some other overshoots 68, in which the unsmoothed measurement curve 52 differs from the smoothed measurement curve 54, but remains within the tolerance curves 56, 58.
- the evaluation device 26 consequently recognizes the peak 64 and the drop 66 as high-frequency interferences in the arc voltage U. These interferences are stored in the control unit 23 and / or displayed via the user interface 18. If necessary, an alarm can be triggered that the welding process overlaid with high-frequency interference has been defective and requires reworking or reworking.
- FIG. 3 shows a diagram of arc voltage U over time t corresponding to FIG. 2. All of the above explanations therefore also relate to the embodiment in FIG. 3.
- an intermediate tolerance curve 70 is calculated in addition to the upper tolerance curve 56.
- the intermediate tolerance curve 70 has a constant distance 72, which is smaller than the distance 60, for example half as large, compared to the smoothed measuring curve 54.
- the unglttte measurement curve 52 is compared on the one hand with the upper and the lower tolerance curve 56, 58. It is determined that there is a strong radio frequency interference if one of these two tolerance curves 56, 58 is exceeded, as is the case with the peak 64 and the drop 66. In the event of such a - left
- an alarm signal is given in this embodiment in any case, which indicates via the user interface 18 that the welding process was defective and requires reworking.
- a peak such as peak 64 shown above can occur in particular if, for any reason, a protective gas jacket around the arc is disturbed during the welding process. As a result, oxygen is supplied to the arc. The electrical resistance and consequently the arc voltage Ü increase.
- a drop like the above drop 66 can be brought about by dripping off thin melt either of the metal element 20 or of the metal component 22 (depending on the relative position).
- Such short-term dripping results in a reduction in the electrical resistance and consequently in a reduction in the arc voltage U.
- the frequency of the disturbances caused thereby is in the range of> 250 Hz.
- Such disturbances can be with conventional monitoring methods cannot be determined, especially not when the arc voltage is regulated, for example by changing the lifting height H.
- the value of E is determined by integrating the arc voltage U over time.
- An upper threshold value 82 and a lower threshold value 84 for the final value of the energy E are also shown in FIG. 4.
- the upper and lower threshold values 82, 84 are entered in advance. These values are calculated from experience. If the final value 86 of the energy E falls below the lower threshold value 84, the energy input E into the welded joint is too small for the element 20 to be used permanently as a carrier. Conversely, if the upper threshold value 86 exceeds the upper threshold value 82, it can be assumed that the energy input E was too high.
- the evaluation device 26 evaluates the welding process as good with regard to the energy input.
- the integration of the arc voltage U for determining the energy input E can also be carried out digitally by means of a digital signal processor.
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Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003516733A JP4851686B2 (ja) | 2001-07-23 | 2002-07-22 | 短時間アーク溶接及び短時間アーク溶接システムの方法 |
AT02767242T ATE304911T1 (de) | 2001-07-23 | 2002-07-22 | Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen |
DE50204335T DE50204335D1 (de) | 2001-07-23 | 2002-07-22 | Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen |
EP02767242A EP1412125B1 (de) | 2001-07-23 | 2002-07-22 | Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen |
US10/763,124 US7009144B2 (en) | 2001-07-23 | 2004-01-22 | Process for short-time arc welding and short-time arc welding system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10136992A DE10136992A1 (de) | 2001-07-23 | 2001-07-23 | Verfahren zum Kurzzeit-Lichtbogenschweißen sowie Kurzzeit-Lichtbogenschweißsystem |
DE10136992.1 | 2001-07-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/763,124 Continuation US7009144B2 (en) | 2001-07-23 | 2004-01-22 | Process for short-time arc welding and short-time arc welding system |
Publications (1)
Publication Number | Publication Date |
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WO2003011511A1 true WO2003011511A1 (de) | 2003-02-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/008149 WO2003011511A1 (de) | 2001-07-23 | 2002-07-22 | Verfahren zum kurzzeit-lichtbogenschweissen sowie kurzzeit-lichtbogenschweisssystem, um hochfrequente störungen zu erkennen |
Country Status (7)
Country | Link |
---|---|
US (1) | US7009144B2 (de) |
EP (1) | EP1412125B1 (de) |
JP (1) | JP4851686B2 (de) |
AT (1) | ATE304911T1 (de) |
DE (2) | DE10136992A1 (de) |
ES (1) | ES2248605T3 (de) |
WO (1) | WO2003011511A1 (de) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7683290B2 (en) * | 2006-05-12 | 2010-03-23 | Lincoln Global, Inc. | Method and apparatus for characterizing a welding output circuit path |
US20070267392A1 (en) * | 2006-05-22 | 2007-11-22 | Newfrey Llc | Welding workpiece movement sensing system |
CN101821050B (zh) * | 2008-09-30 | 2013-06-12 | 尚明技术开发株式会社 | 用于自动焊接的横向摆动的焊枪装置 |
DE102008058753A1 (de) * | 2008-11-17 | 2010-05-20 | Newfrey Llc, Newark | Verfahren und Vorrichtung zum Ermitteln von elektrischen Schweißkreisgrößen |
JP5358235B2 (ja) * | 2009-03-23 | 2013-12-04 | 日本ドライブイット株式会社 | コンデンサ放電型スタッド溶接機の溶接良否判定方法及び判定装置 |
DE102009016798A1 (de) | 2009-04-07 | 2010-10-14 | Daimler Ag | Verfahren und Steuergerät zum Überwachen einer Qualität von Schweißpunkten einer Widerstandsschweißzange |
US8521484B2 (en) * | 2010-06-02 | 2013-08-27 | Livermore Software Technology Corp. | Curve matching for parameter identification |
CN102986305B (zh) * | 2010-07-16 | 2016-01-20 | 海别得公司 | 等离子体电弧喷枪中的故障事件检测 |
US9463522B2 (en) * | 2012-04-05 | 2016-10-11 | GM Global Technology Operations LLC | Drawn arc welding |
US9387550B2 (en) * | 2012-09-14 | 2016-07-12 | Illinois Tool Works Inc. | Waveform compensation systems and methods for secondary weld component response |
US10040143B2 (en) | 2012-12-12 | 2018-08-07 | Illinois Tool Works Inc. | Dabbing pulsed welding system and method |
US10906114B2 (en) | 2012-12-21 | 2021-02-02 | Illinois Tool Works Inc. | System for arc welding with enhanced metal deposition |
US9950383B2 (en) | 2013-02-05 | 2018-04-24 | Illinois Tool Works Inc. | Welding wire preheating system and method |
US10213861B2 (en) * | 2013-03-11 | 2019-02-26 | Illinois Tool Works Inc. | Automated system for machine set-up of welding power sources and welding systems |
US10835983B2 (en) | 2013-03-14 | 2020-11-17 | Illinois Tool Works Inc. | Electrode negative pulse welding system and method |
US11045891B2 (en) | 2013-06-13 | 2021-06-29 | Illinois Tool Works Inc. | Systems and methods for anomalous cathode event control |
US10828728B2 (en) | 2013-09-26 | 2020-11-10 | Illinois Tool Works Inc. | Hotwire deposition material processing system and method |
JP2015100795A (ja) * | 2013-11-21 | 2015-06-04 | 株式会社大谷工業 | スタッド溶接のモニタリング方法 |
US11154946B2 (en) | 2014-06-30 | 2021-10-26 | Illinois Tool Works Inc. | Systems and methods for the control of welding parameters |
US11198189B2 (en) | 2014-09-17 | 2021-12-14 | Illinois Tool Works Inc. | Electrode negative pulse welding system and method |
US11478870B2 (en) | 2014-11-26 | 2022-10-25 | Illinois Tool Works Inc. | Dabbing pulsed welding system and method |
US10189106B2 (en) | 2014-12-11 | 2019-01-29 | Illinois Tool Works Inc. | Reduced energy welding system and method |
US11370050B2 (en) | 2015-03-31 | 2022-06-28 | Illinois Tool Works Inc. | Controlled short circuit welding system and method |
US11285559B2 (en) | 2015-11-30 | 2022-03-29 | Illinois Tool Works Inc. | Welding system and method for shielded welding wires |
DE102015224303A1 (de) * | 2015-12-04 | 2017-06-08 | Bolzenschweißtechnik Heinz Soyer GmbH | Verfahren und Vorrichtung zum Verschweißen eines Schweißelements mit einem metallischen Werkstück |
US10610946B2 (en) | 2015-12-07 | 2020-04-07 | Illinois Tool Works, Inc. | Systems and methods for automated root pass welding |
US10675699B2 (en) | 2015-12-10 | 2020-06-09 | Illinois Tool Works Inc. | Systems, methods, and apparatus to preheat welding wire |
DE102017100157A1 (de) * | 2017-01-05 | 2018-07-05 | Newfrey Llc | Verfahren zum Bewerten einer Schweißverbindung sowie Schweißverbindungs-Bewertungsvorrichtung |
US10766092B2 (en) | 2017-04-18 | 2020-09-08 | Illinois Tool Works Inc. | Systems, methods, and apparatus to provide preheat voltage feedback loss protection |
US10870164B2 (en) | 2017-05-16 | 2020-12-22 | Illinois Tool Works Inc. | Systems, methods, and apparatus to preheat welding wire |
US11524354B2 (en) | 2017-06-09 | 2022-12-13 | Illinois Tool Works Inc. | Systems, methods, and apparatus to control weld current in a preheating system |
CA3066677C (en) | 2017-06-09 | 2023-04-04 | Illinois Tool Works Inc. | Welding assembly for a welding torch, with two contact tips and a cooling body to cool and conduct current |
US11247290B2 (en) | 2017-06-09 | 2022-02-15 | Illinois Tool Works Inc. | Systems, methods, and apparatus to preheat welding wire |
CN111372711A (zh) | 2017-06-09 | 2020-07-03 | 伊利诺斯工具制品有限公司 | 具有用于预热焊丝的第一接触焊嘴和第二接触焊嘴的焊接炬 |
EP3634682B1 (de) | 2017-06-09 | 2023-08-23 | Illinois Tool Works, Inc. | Kontaktspitze mit schraubgewinden mit längsschlitzen für gasfluss, und einem kopf zur ermöglichung des lösens ; schweissbrenner mit einer solchen kontaktspitze |
US11020813B2 (en) | 2017-09-13 | 2021-06-01 | Illinois Tool Works Inc. | Systems, methods, and apparatus to reduce cast in a welding wire |
EP3466582A1 (de) * | 2017-10-06 | 2019-04-10 | HILTI Aktiengesellschaft | Bolzenschweissvorrichtung und -verfahren |
EP3492207A1 (de) * | 2017-12-04 | 2019-06-05 | HILTI Aktiengesellschaft | Bolzenschweissvorrichtung und -verfahren |
US11267066B2 (en) * | 2018-03-20 | 2022-03-08 | Lincoln Global, Inc. | Weld signature analysis for weld quality determination |
EP3843933A1 (de) | 2018-08-31 | 2021-07-07 | Illinois Tool Works, Inc. | Unterwasser-lichtbogenschweisssysteme und unterwasser-lichtbogenschweissbrenner zur resistiven vorwärmung eines elektrodendrahtes |
US11014185B2 (en) | 2018-09-27 | 2021-05-25 | Illinois Tool Works Inc. | Systems, methods, and apparatus for control of wire preheating in welding-type systems |
CA3119590C (en) | 2018-12-19 | 2024-06-11 | Illinois Tool Works Inc. | Contact tip, wire preheating assembly, contact tip assembly and consumable electrode-fed welding type system |
US11772182B2 (en) | 2019-12-20 | 2023-10-03 | Illinois Tool Works Inc. | Systems and methods for gas control during welding wire pretreatments |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5434382A (en) * | 1992-10-20 | 1995-07-18 | Bavaria-Tech | Electrode holder and electric sensor |
US5449877A (en) * | 1993-12-29 | 1995-09-12 | Square D Company | Progressive power monitor for a current controlled resistance welder |
US5662820A (en) * | 1995-03-14 | 1997-09-02 | Trw Inc. | Welding process for drawn ARC stud welding |
US5676867A (en) * | 1995-12-28 | 1997-10-14 | Emhart Inc. | Apparatus and method for monitoring and evaluating weld quality |
US5977506A (en) * | 1994-10-03 | 1999-11-02 | Emhart Inc. | Welding method for the connection of a component to a workpiece, and a device for carrying out the method |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4267426A (en) * | 1979-08-28 | 1981-05-12 | Usm Corporation | Automatic stud welding gun with perforated stud collet |
HU188832B (en) * | 1983-01-26 | 1986-05-28 | Retfalvi,Ferenc,Hu | Method and apparatus for securing the weld quality during operation, for marking the defect spots on piece and for certifying the quality |
GB8507094D0 (en) * | 1985-03-19 | 1985-04-24 | Welding Inst | Welding monitor |
JP3777017B2 (ja) * | 1997-03-31 | 2006-05-24 | 株式会社ダイヘン | スタッド溶接品質管理方法 |
JP3852635B2 (ja) * | 1997-08-08 | 2006-12-06 | 株式会社安川電機 | アーク溶接モニタ装置 |
JP4657391B2 (ja) * | 1997-08-30 | 2011-03-23 | 株式会社ダイヘン | スタッド溶接の入熱積算押し込み制御方法 |
JP4112665B2 (ja) * | 1998-02-27 | 2008-07-02 | 株式会社ダイヘン | スタッド溶接の不良原因除去方法 |
JPH11296768A (ja) * | 1998-04-03 | 1999-10-29 | Tokimec Inc | 警報モニタ |
US6225590B1 (en) * | 1998-05-26 | 2001-05-01 | Medar, Inc. | Method for determining a condition of a resistance spotwelding system or a workpiece in the system |
JP3460587B2 (ja) * | 1998-07-21 | 2003-10-27 | トヨタ自動車株式会社 | 回転角検出装置の異常を検出する異常検出装置 |
KR100734505B1 (ko) | 1999-12-15 | 2007-07-03 | 더 유니버시티 오브 시드니 | 용접 평가 장치 및 방법 |
US6609560B2 (en) * | 2001-04-28 | 2003-08-26 | Samsung Electronics Co., Ltd. | Flat evaporator |
-
2001
- 2001-07-23 DE DE10136992A patent/DE10136992A1/de not_active Ceased
-
2002
- 2002-07-22 DE DE50204335T patent/DE50204335D1/de not_active Expired - Lifetime
- 2002-07-22 EP EP02767242A patent/EP1412125B1/de not_active Expired - Lifetime
- 2002-07-22 JP JP2003516733A patent/JP4851686B2/ja not_active Expired - Fee Related
- 2002-07-22 AT AT02767242T patent/ATE304911T1/de not_active IP Right Cessation
- 2002-07-22 ES ES02767242T patent/ES2248605T3/es not_active Expired - Lifetime
- 2002-07-22 WO PCT/EP2002/008149 patent/WO2003011511A1/de active IP Right Grant
-
2004
- 2004-01-22 US US10/763,124 patent/US7009144B2/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5434382A (en) * | 1992-10-20 | 1995-07-18 | Bavaria-Tech | Electrode holder and electric sensor |
US5449877A (en) * | 1993-12-29 | 1995-09-12 | Square D Company | Progressive power monitor for a current controlled resistance welder |
US5977506A (en) * | 1994-10-03 | 1999-11-02 | Emhart Inc. | Welding method for the connection of a component to a workpiece, and a device for carrying out the method |
US5662820A (en) * | 1995-03-14 | 1997-09-02 | Trw Inc. | Welding process for drawn ARC stud welding |
US5676867A (en) * | 1995-12-28 | 1997-10-14 | Emhart Inc. | Apparatus and method for monitoring and evaluating weld quality |
Also Published As
Publication number | Publication date |
---|---|
JP4851686B2 (ja) | 2012-01-11 |
DE50204335D1 (de) | 2006-02-02 |
ATE304911T1 (de) | 2005-10-15 |
US7009144B2 (en) | 2006-03-07 |
US20040182828A1 (en) | 2004-09-23 |
EP1412125B1 (de) | 2005-09-21 |
DE10136992A1 (de) | 2003-02-06 |
ES2248605T3 (es) | 2006-03-16 |
JP2004535936A (ja) | 2004-12-02 |
EP1412125A1 (de) | 2004-04-28 |
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