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FR2364088A1 - PROCESS FOR MAKING CUTS WITHOUT BARBS ON PLASMA CUTTING MACHINES - Google Patents

PROCESS FOR MAKING CUTS WITHOUT BARBS ON PLASMA CUTTING MACHINES

Info

Publication number
FR2364088A1
FR2364088A1 FR7725332A FR7725332A FR2364088A1 FR 2364088 A1 FR2364088 A1 FR 2364088A1 FR 7725332 A FR7725332 A FR 7725332A FR 7725332 A FR7725332 A FR 7725332A FR 2364088 A1 FR2364088 A1 FR 2364088A1
Authority
FR
France
Prior art keywords
volume
barbs
plasma
plasma cutting
cutting machines
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
Application number
FR7725332A
Other languages
French (fr)
Other versions
FR2364088B1 (en
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Publication of FR2364088A1 publication Critical patent/FR2364088A1/en
Application granted granted Critical
Publication of FR2364088B1 publication Critical patent/FR2364088B1/fr
Granted legal-status Critical Current

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
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Use of a gas mixture containing 35 to 80% by volume of nitrogen, 15 to 50% by volume of neon and 5 to 19% by volume of helium as a plasma-cutting gas for making burr-free severing cuts in the plasma-cutting of low-alloyed low-carbon steels, in particular structural steel. The gas mixture which preferably contains 1 to 5% by volume of hydrogen and, if appropriate, small quantities of argon, oxygen and carbon dioxide, allows the use of nitrogen/neon/helium mixtures which arise in air separation and have hitherto found only limited use. In addition, a reduction in the power consumption is obtained by lowering the working voltage.
FR7725332A 1976-09-09 1977-08-18 PROCESS FOR MAKING CUTS WITHOUT BARBS ON PLASMA CUTTING MACHINES Granted FR2364088A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762640506 DE2640506C3 (en) 1976-09-09 1976-09-09 Gas mixture for the production of beard-free separating cuts during plasma cutting

Publications (2)

Publication Number Publication Date
FR2364088A1 true FR2364088A1 (en) 1978-04-07
FR2364088B1 FR2364088B1 (en) 1982-08-20

Family

ID=5987479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725332A Granted FR2364088A1 (en) 1976-09-09 1977-08-18 PROCESS FOR MAKING CUTS WITHOUT BARBS ON PLASMA CUTTING MACHINES

Country Status (6)

Country Link
AT (1) AT369305B (en)
CH (1) CH637559A5 (en)
DE (1) DE2640506C3 (en)
ES (1) ES461629A1 (en)
FR (1) FR2364088A1 (en)
NL (1) NL7709588A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4977305A (en) * 1989-04-03 1990-12-11 L-Tec Company System for low voltage plasma arc cutting
CN105618926B (en) * 2016-02-29 2018-04-03 上海十三冶建设有限公司 The system inflation welding method of stainless steel pipes in Large Air Separation Devices ice chest

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884510A (en) * 1955-10-17 1959-04-28 Union Carbide Corp Constricted arc apparatus and process
FR1449716A (en) * 1965-06-02 1966-05-06 Soudure Autogene Francaise Protective atmosphere for arc welding and surfacing of steels
US3582604A (en) * 1969-01-17 1971-06-01 David Grigorievich Bykhovsky Method of plasma treatment of metals
DE2130394A1 (en) * 1970-06-19 1971-12-23 Union Carbide Corp Arc cutting process
DE2510466A1 (en) * 1975-03-11 1976-09-16 Messer Griesheim Gmbh Gas mixture for plasma cutting - comprising nitrogen, neon, and helium for burr-free cut surfaces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884510A (en) * 1955-10-17 1959-04-28 Union Carbide Corp Constricted arc apparatus and process
FR1449716A (en) * 1965-06-02 1966-05-06 Soudure Autogene Francaise Protective atmosphere for arc welding and surfacing of steels
US3582604A (en) * 1969-01-17 1971-06-01 David Grigorievich Bykhovsky Method of plasma treatment of metals
DE2130394A1 (en) * 1970-06-19 1971-12-23 Union Carbide Corp Arc cutting process
FR2099260A5 (en) * 1970-06-19 1972-03-10 Union Carbide Corp
DE2510466A1 (en) * 1975-03-11 1976-09-16 Messer Griesheim Gmbh Gas mixture for plasma cutting - comprising nitrogen, neon, and helium for burr-free cut surfaces

Also Published As

Publication number Publication date
DE2640506B2 (en) 1980-04-24
FR2364088B1 (en) 1982-08-20
DE2640506A1 (en) 1978-03-16
DE2640506C3 (en) 1981-01-22
AT369305B (en) 1982-12-27
ES461629A1 (en) 1978-06-16
CH637559A5 (en) 1983-08-15
NL7709588A (en) 1978-03-13
ATA540677A (en) 1982-05-15

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Legal Events

Date Code Title Description
ST Notification of lapse