CA2230427A1 - Arc transfer circuit - Google Patents
Arc transfer circuitInfo
- Publication number
- CA2230427A1 CA2230427A1 CA002230427A CA2230427A CA2230427A1 CA 2230427 A1 CA2230427 A1 CA 2230427A1 CA 002230427 A CA002230427 A CA 002230427A CA 2230427 A CA2230427 A CA 2230427A CA 2230427 A1 CA2230427 A1 CA 2230427A1
- Authority
- CA
- Canada
- Prior art keywords
- current
- circuit branch
- workpiece
- arc
- electrode
- 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.)
- Granted
Links
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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/006—Control circuits therefor
Abstract
A circuit for providing D.C. current from a power source having a current regulating input to a plasma system including an electrode and a nozzle with a plasma arc opening exposing the electrode to a juxtapositioned workpiece, which circuit has a first circuit branch for creating a pilot arc across the electrode and nozzle, a second circuit branch for creating an operative plasma arc across the electrode and the workpiece, a current sensor means in the second circuit branch for sensing the workpiece current in the second circuit branch, switch means for opening the first circuit branch when the sensed workpiece current exceeds a preselected current to transfer the pilot arc to the operative plasma arc, means for regulating the current in the first circuit branch until the arc transfer and means for increasing the pilot current supplied from said power source to first circuit branch when sensed workpiece current exceeds a low threshold value.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/819,968 US5847354A (en) | 1997-03-18 | 1997-03-18 | Arc transfer circuit |
| US08/819,968 | 1997-03-18 | ||
| EP98108947A EP0971567B1 (en) | 1997-03-18 | 1998-05-16 | Plasma arc device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2230427A1 true CA2230427A1 (en) | 1998-09-18 |
| CA2230427C CA2230427C (en) | 2001-05-15 |
Family
ID=26149270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002230427A Expired - Fee Related CA2230427C (en) | 1997-03-18 | 1998-02-24 | Arc transfer circuit |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5847354A (en) |
| EP (1) | EP0971567B1 (en) |
| JP (1) | JP2850230B2 (en) |
| CN (1) | CN1131661C (en) |
| AT (1) | ATE282940T1 (en) |
| AU (1) | AU700319B2 (en) |
| CA (1) | CA2230427C (en) |
| DE (1) | DE59812275D1 (en) |
| DK (1) | DK0971567T3 (en) |
| ES (1) | ES2234049T3 (en) |
| SG (1) | SG55458A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2192891C (en) | 1996-01-16 | 2000-02-22 | Jon O. Reynolds | Plasma cutting or arc welding power supply with phase staggered secondary switchers |
| FR2763466B1 (en) * | 1997-05-14 | 1999-08-06 | Aerospatiale | REGULATION AND CONTROL SYSTEM OF A PLASMA TORCH |
| US6133543A (en) * | 1998-11-06 | 2000-10-17 | Hypertherm, Inc. | System and method for dual threshold sensing in a plasma ARC torch |
| US6350960B1 (en) | 2000-11-28 | 2002-02-26 | Thermal Dynamics Corporation | Parts-in-place safety reset circuit and method for contact start plasma-arc torch |
| US6369350B1 (en) | 2001-05-30 | 2002-04-09 | Thermal Dynamics Corporation | Plasma-arc torch system with pilot re-attach circuit and method |
| US6794601B2 (en) * | 2002-09-05 | 2004-09-21 | Thermal Dynamics Corporation | Plasma arc torch system with pilot re-attach circuit and method |
| US7034245B2 (en) * | 2004-06-29 | 2006-04-25 | The Esab Group, Inc. | Systems and methods for controlling pilot arc current in an arc cutting or welding machine |
| US7358458B2 (en) * | 2005-01-25 | 2008-04-15 | Lincoln Global, Inc. | Methods and apparatus for tactile communication in an arc processing system |
| US7705269B2 (en) * | 2005-03-15 | 2010-04-27 | Lincoln Global, Inc. | Method and apparatus for advance warning and controlled shutdown in an arc processing system |
| US7514935B2 (en) | 2006-09-13 | 2009-04-07 | Advanced Energy Industries, Inc. | System and method for managing power supplied to a plasma chamber |
| DE102008047888B4 (en) * | 2008-09-18 | 2010-09-30 | Rittal Gmbh & Co. Kg | Welding method and apparatus for carrying out the method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5036176A (en) * | 1988-03-24 | 1991-07-30 | Kabushiki Kaisha Komatsu Seisakusho | Plasma arc cutter and method of controlling the same |
| US4996407A (en) * | 1989-04-03 | 1991-02-26 | Hyperpower, Inc. | Plasma arc transfer controller |
| US5416297A (en) * | 1993-03-30 | 1995-05-16 | Hypertherm, Inc. | Plasma arc torch ignition circuit and method |
| US5530220A (en) * | 1994-04-11 | 1996-06-25 | Thermal Dynamics Corporation | Plasma torch arc transfer circuit |
| US5506384A (en) * | 1994-04-21 | 1996-04-09 | Kabushiki Kaisha Komatsu Seisakusho | Plasma arc cutting machine with variable constant current source and variable resistor |
| JP2925467B2 (en) * | 1994-12-27 | 1999-07-28 | 株式会社三社電機製作所 | Plasma arc power supply |
-
1997
- 1997-03-18 US US08/819,968 patent/US5847354A/en not_active Expired - Lifetime
-
1998
- 1998-02-24 CA CA002230427A patent/CA2230427C/en not_active Expired - Fee Related
- 1998-03-02 SG SG1998000470A patent/SG55458A1/en unknown
- 1998-03-16 JP JP10064921A patent/JP2850230B2/en not_active Expired - Fee Related
- 1998-03-17 AU AU59344/98A patent/AU700319B2/en not_active Ceased
- 1998-03-17 CN CN98105716.0A patent/CN1131661C/en not_active Expired - Fee Related
- 1998-05-16 ES ES98108947T patent/ES2234049T3/en not_active Expired - Lifetime
- 1998-05-16 AT AT98108947T patent/ATE282940T1/en not_active IP Right Cessation
- 1998-05-16 DE DE59812275T patent/DE59812275D1/en not_active Expired - Fee Related
- 1998-05-16 DK DK98108947T patent/DK0971567T3/en active
- 1998-05-16 EP EP98108947A patent/EP0971567B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU5934498A (en) | 1998-10-01 |
| ATE282940T1 (en) | 2004-12-15 |
| AU700319B2 (en) | 1998-12-24 |
| DK0971567T3 (en) | 2005-01-17 |
| EP0971567A1 (en) | 2000-01-12 |
| CN1131661C (en) | 2003-12-17 |
| EP0971567B1 (en) | 2004-11-17 |
| CA2230427C (en) | 2001-05-15 |
| ES2234049T3 (en) | 2005-06-16 |
| CN1200646A (en) | 1998-12-02 |
| US5847354A (en) | 1998-12-08 |
| DE59812275D1 (en) | 2004-12-23 |
| JPH10263828A (en) | 1998-10-06 |
| SG55458A1 (en) | 1998-12-21 |
| JP2850230B2 (en) | 1999-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140225 |