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US3136883A - Seal for moving electron beam column - Google Patents

Seal for moving electron beam column Download PDF

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Publication number
US3136883A
US3136883A US184128A US18412862A US3136883A US 3136883 A US3136883 A US 3136883A US 184128 A US184128 A US 184128A US 18412862 A US18412862 A US 18412862A US 3136883 A US3136883 A US 3136883A
Authority
US
United States
Prior art keywords
seal
beam generating
generating means
opening
charged particles
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.)
Expired - Lifetime
Application number
US184128A
Other languages
English (en)
Inventor
Edward W Radtke
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.)
RTX Corp
Original Assignee
United Aircraft Corp
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
Priority to BE630465D priority Critical patent/BE630465A/xx
Priority to NL290956D priority patent/NL290956A/xx
Priority to CH209489D priority patent/CH209489A/de
Priority to US184128A priority patent/US3136883A/en
Application filed by United Aircraft Corp filed Critical United Aircraft Corp
Priority to DEP1269A priority patent/DE1269750B/de
Priority to CH405963A priority patent/CH424020A/de
Priority to GB12789/63A priority patent/GB1032453A/en
Priority to FR929933A priority patent/FR1367468A/fr
Application granted granted Critical
Publication of US3136883A publication Critical patent/US3136883A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/06—Electron-beam welding or cutting within a vacuum chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/18—Vacuum locks ; Means for obtaining or maintaining the desired pressure within the vessel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S164/00—Metal founding
    • Y10S164/05—Electron beam

Definitions

  • FIG. 2 SEARCH ROOM Filed April 2, 1962 FIG. 2
  • My invention relates to working a material with a beam of charged particles. More particularly, my invention relates to performing operations such as welding, cutting, melting, evaporating, or machining on any material with an electron beam.
  • the electron beam machines are devices which use the kinetic energy of an electron beam to work a material.
  • US. Patent No. 2,793,281, issued May 21, 1957, to K. H. Steigerwald discloses such a machine. These machines operate by generating a highly focused beam of electrons.
  • the electron beam is a welding, cutting and machining tool which has practically no mass but has high kinetic energy because of the extremely high velocity imparted to the electrons. Transfer of this kinetic energy to the lattice electrons of the work piece generates higher lattice vibrations which causes an increase in the temperature within the impingement area suflicient to accomplish work.
  • the piece to be Worked was placed on a movable table within the vacuum chamber of an electron beam machine and Work was performed by moving the table under the beam.
  • the work piece size was limited to less than half the size of the vacuum chamber. For smaller parts, this restriction is acceptable but inconvenient. For larger parts, the cost of the vacuum chamber and associated pumps is so expensive that it becomes impracticable.
  • My invention overcomes the above disadvantages by providing apparatus and methods which permit working a piece as large as or larger than the vacuum chamber.
  • FIGURE 1 is an end view of one embodiment of my invention.
  • FIGURE 2 is a side view of the embodiment illustrated in FIGURE 1.
  • FIGURE 3 is a top view of the vacuum chamber of the embodiment illustrated in FIGURE 1.
  • FIGURE 4 is an end view of a second embodiment of my invention.
  • FIGURE 5 is a side view of still another embodiment of my invention.
  • an electron beam column is shown at 10.
  • This column contains means, not shown, for emitting electrons, focusing the electrons into a beam and accelerating the beam toward a work piece.
  • the beam formed in column 10 is shown at 12.
  • the work piece which may be two flat plates to be joined by a butt weld, is shown at 14, in a vacuum chamber 16.
  • Chamber 16, as well as column 10 are evacuated by vacuum means pumping means, not shown, which are well known in the art.
  • the top of chamber 16 contains an elongated slot 18 which is surrounded by a seal 20 which may be an O-ring.
  • the column 10 has a sliding plate 22 attached thereto.
  • the column and plate are positioned on the vacuum chamber 16 in such a manner that the beam of particles emanating from the column 10 passes through the slot 18 to impinge upon the work piece 14.
  • the combined Weights of plate 22 and column 10 cause plate 22 to press against seal 20.
  • the pressure exerted by plate 22 against seal 20 provides an air tight seal therebetween.
  • the column and plate are caused to slide along slot 18.
  • An air tight seal between plate 22 and seal 20 may be further insured by the use of vacuum grease.
  • the grease will also facilitate movement of the column. As shown in FIGURE 1, the movement of the column 10 may also be eased by providing rollers or balls 24 which are attached to the column and which run in ways 26 in the top of the vacuum chamber. These balls or rollers allow an adequate squeeze on the seal while preventing rubbing of the plate against the chamber.
  • a work piece the length of the vacuum chamber can be operated on with a beam of charged particles by use of my invention.
  • a plate 22, which is at least twice as long as the vacuum chamber 16 to the electron beam column 10 of the machine, and providing a seal 22 in the top of chamber 16
  • the particle generator can be moved the length of the chamber thereby permitting welding of pieces twice as long as could be welded with prior art devices or, conversely, permitting the use of vacuum chamber half as large as those formerly employed.
  • FIGURE 4 there is shown a second embodiment of my invention wherein the vacuum chamber enclosing the work piece is eliminated.
  • the work piece 14 shown is the tank of a missile which has been formed by rolling a thin sheet into a cylinder. Because of the types of metal used and the thinness of the cylinder, electron beam welding is a very desirable method of joining the ends of the sheet to close the cylinder. However, because of the size of the cylinders, it is impractical to construct a vacuum chamber which would accept these pieces.
  • the embodiment of FIGURE 4 utilizes a box or cup-like structure 40 which may be placed over a portion of the joint to be welded.
  • Structure 40 is made to fit the contour of the work piece and Q) is sealed to the work piece by means of seals 42.
  • the structure 40 is evacuated in the conventional manner to form a local vacuum in the area to be welded.
  • the top of structure 40 has the same configuration as the top of the vacuum chamber shown in FIGURES 1 through 3.
  • a portion of the joint of the cylinder may be Welded, and then the structure 40 can be moved along the joint to weld successive portions thereof. It is, of course, understood that the joint itself must be sealed in the area not covered by structure 40 and the interior of the work piece must then be evacuated. This sealing may be accomplished by use of a pressure sensitive tape as taught in my copending application No. 183,096, filed March 28, 1962.
  • FIGURE 5 there is illustrated another embodiment of my invention.
  • the vacuum chamber of FIGURE 5 is similar to that discussed in relation to FIGURES 1 through 3 above. That is, the elongated slot for the beam is surrounded by a seal 20 and the beam forming column is supported on top of the chamber by wheels or rollers which run in ways in the top of the chamber. These ways and rollers guide the column so that it follows a straight line as it moves. Between the column 10 and the chamber 16 there is a strip of thin metal 50. This metal tape is attached to column 10 and is used to pull the column back and forth by means of a drive mechanism, not shown, on the tape reels 52 and 54 located at each end of the chamber 16. The pressure difference across the tape holds the tape against the top of the slot and the seal 20.
  • the thickness of the tape 50 is chosen to be stiff enough to span the slot without excessive stress or deflection, and yet to be pliable enough to enable it to be wound up on the reels 52 and 54 without excessive stress.
  • the parts are lubricated with vacuum grease in the same manner as the plate 22 of FIGURE 1 is lubricated.
  • Apparatus for working materials with a beam of charged particles comprising:
  • Apparatus for Working materials with a beam of charged particles comprising:
  • means for creating a low pressure environment about at least a region of a material to be Worked said means having an. elongated slot in the top thereof;
  • an apertured elongated plate having said beam generating means sealably mounted thereon in alignment with the aperture therein.
  • a seal mounted on the top of said low pressure environment creating means and extending completely around the slot, said seal being adapted to be squeezed between said top and said elongated plate to thereby provide an air tight seal across which the plate may be caused to slide.
  • I means for supporting the material to be worked in said chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Welding Or Cutting Using Electron Beams (AREA)
US184128A 1962-04-02 1962-04-02 Seal for moving electron beam column Expired - Lifetime US3136883A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE630465D BE630465A (de) 1962-04-02
NL290956D NL290956A (de) 1962-04-02
CH209489D CH209489A (de) 1962-04-02 1939-01-14 Vorrichtung zur Verbreiterung der Tragbrücke an Gepäckträgern für Fahrräder und dergleichen.
US184128A US3136883A (en) 1962-04-02 1962-04-02 Seal for moving electron beam column
DEP1269A DE1269750B (de) 1962-04-02 1963-03-26 Verfahren und Vorrichtung zum Bearbeiten oder Schweissen von Werkstuecken mit Hilfe eines Ladungstraegerstrahls
CH405963A CH424020A (de) 1962-04-02 1963-03-29 Verfahren und Vorrichtung zum Bearbeiten oder Schweissen von Werkstücken mit einem Strahl aufgeladener Teilchen
GB12789/63A GB1032453A (en) 1962-04-02 1963-04-01 Method of and apparatus for working materials with beams of charged particles
FR929933A FR1367468A (fr) 1962-04-02 1963-04-01 Joint pour canon à électrons mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US184128A US3136883A (en) 1962-04-02 1962-04-02 Seal for moving electron beam column

Publications (1)

Publication Number Publication Date
US3136883A true US3136883A (en) 1964-06-09

Family

ID=22675659

Family Applications (1)

Application Number Title Priority Date Filing Date
US184128A Expired - Lifetime US3136883A (en) 1962-04-02 1962-04-02 Seal for moving electron beam column

Country Status (6)

Country Link
US (1) US3136883A (de)
BE (1) BE630465A (de)
CH (2) CH209489A (de)
DE (1) DE1269750B (de)
GB (1) GB1032453A (de)
NL (1) NL290956A (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219792A (en) * 1963-07-23 1965-11-23 Rohr Corp Electron beam vacuum welding system with walking seal
US3222496A (en) * 1962-04-18 1965-12-07 Int Resistance Co Apparatus for working materials by means of an electron beam
US3301993A (en) * 1962-05-21 1967-01-31 North American Aviation Inc Welded joint and apparatus and method for making same
US3401249A (en) * 1963-07-09 1968-09-10 United Aircraft Corp Apparatus for the machining of material by means of a beam of charge carriers
US3424891A (en) * 1967-03-16 1969-01-28 North American Rockwell Portable welding chamber
US3426173A (en) * 1964-08-08 1969-02-04 Karl Heinz Steigerwald Machining device using a corpuscular beam
US3435185A (en) * 1966-01-11 1969-03-25 Rohr Corp Sliding vacuum seal for electron beam welder
US3437785A (en) * 1966-05-06 1969-04-08 Welding Research Inc Method for electron beam welding of overlapped sheets
US3454740A (en) * 1966-04-15 1969-07-08 Commissariat Energie Atomique Process and device for welding by electron bombardment
US3469066A (en) * 1966-09-30 1969-09-23 Nasa Method and device for preventing high voltage arcing in electron beam welding
US3483352A (en) * 1967-06-08 1969-12-09 United Aircraft Corp Apparatus for welding large pipes with a beam of charged particles
US3485998A (en) * 1967-06-29 1969-12-23 Rohr Corp Adaptor type electron beam welding apparatus
US3497665A (en) * 1966-12-29 1970-02-24 Rohr Corp Apply type electron beam welding apparatus
US3535489A (en) * 1968-05-03 1970-10-20 Smith Corp A O Electron beam welding apparatus
US3539761A (en) * 1969-02-05 1970-11-10 American Mach & Foundry Forge welding
US3539760A (en) * 1968-11-27 1970-11-10 American Mach & Foundry Electron beam forge welding
US3626142A (en) * 1970-05-01 1971-12-07 Union Carbide Corp Electron beam machine
US3748432A (en) * 1971-12-27 1973-07-24 Boeing Co Apparatus for welding corrugated materials by plasma electron beam welding system
US3761676A (en) * 1971-05-20 1973-09-25 Farland G Mc Portable electron beam welding apparatus
US3816699A (en) * 1972-02-15 1974-06-11 Hell R Gmbh Engraving system for producing a screened rotary printing matrix with a variable diameter
US4072844A (en) * 1975-07-02 1978-02-07 Sciaky Bros., Inc. Apparatus for electron beam machining in vacuum
US4103912A (en) * 1976-08-30 1978-08-01 Paul Thome Moving sealing junction with sealing strips controlled by mechanical operators
US6530317B2 (en) 2000-12-05 2003-03-11 Creo Srl Method to engrave surface using particle beam
CN103506751A (zh) * 2012-06-20 2014-01-15 上海新力动力设备研究所 一种不锈钢筒体真空电子束焊接方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE862095C (de) * 1950-01-12 1953-01-08 Max Croy Gepaecktraeger fuer Fahr- und Motorraeder
CS267642B1 (en) * 1987-12-18 1990-02-12 Josef Ing Melkes Portable rastering electron microscope
DE10028127C2 (de) * 2000-06-07 2003-11-06 Straser Uwe Fahrradgepäckträger-Brücke

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053417A (en) * 1933-11-11 1936-09-08 Westinghouse Electric & Mfg Co Arc welding apparatus
US2793282A (en) * 1951-01-31 1957-05-21 Zeiss Carl Forming spherical bodies by electrons
US2812417A (en) * 1954-04-22 1957-11-05 Busse Ferdinand Method and machines for producing a butt seam joint by means of resistance welding
US2856510A (en) * 1956-09-11 1958-10-14 Samuel O Jones Inert gas shield for welding
US2950378A (en) * 1958-12-22 1960-08-23 Air Reduction Slide closure for welding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053417A (en) * 1933-11-11 1936-09-08 Westinghouse Electric & Mfg Co Arc welding apparatus
US2793282A (en) * 1951-01-31 1957-05-21 Zeiss Carl Forming spherical bodies by electrons
US2812417A (en) * 1954-04-22 1957-11-05 Busse Ferdinand Method and machines for producing a butt seam joint by means of resistance welding
US2856510A (en) * 1956-09-11 1958-10-14 Samuel O Jones Inert gas shield for welding
US2950378A (en) * 1958-12-22 1960-08-23 Air Reduction Slide closure for welding

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222496A (en) * 1962-04-18 1965-12-07 Int Resistance Co Apparatus for working materials by means of an electron beam
US3301993A (en) * 1962-05-21 1967-01-31 North American Aviation Inc Welded joint and apparatus and method for making same
US3469065A (en) * 1963-07-09 1969-09-23 United Aircraft Corp Apparatus for the machining of material by means of a beam of charge carriers
US3401249A (en) * 1963-07-09 1968-09-10 United Aircraft Corp Apparatus for the machining of material by means of a beam of charge carriers
US3219792A (en) * 1963-07-23 1965-11-23 Rohr Corp Electron beam vacuum welding system with walking seal
US3426173A (en) * 1964-08-08 1969-02-04 Karl Heinz Steigerwald Machining device using a corpuscular beam
US3435185A (en) * 1966-01-11 1969-03-25 Rohr Corp Sliding vacuum seal for electron beam welder
US3454740A (en) * 1966-04-15 1969-07-08 Commissariat Energie Atomique Process and device for welding by electron bombardment
US3463899A (en) * 1966-04-15 1969-08-26 Commissariat Energie Atomique Device for welding parts by electron bombardment
US3437785A (en) * 1966-05-06 1969-04-08 Welding Research Inc Method for electron beam welding of overlapped sheets
US3469066A (en) * 1966-09-30 1969-09-23 Nasa Method and device for preventing high voltage arcing in electron beam welding
US3497665A (en) * 1966-12-29 1970-02-24 Rohr Corp Apply type electron beam welding apparatus
US3424891A (en) * 1967-03-16 1969-01-28 North American Rockwell Portable welding chamber
US3483352A (en) * 1967-06-08 1969-12-09 United Aircraft Corp Apparatus for welding large pipes with a beam of charged particles
US3485998A (en) * 1967-06-29 1969-12-23 Rohr Corp Adaptor type electron beam welding apparatus
US3535489A (en) * 1968-05-03 1970-10-20 Smith Corp A O Electron beam welding apparatus
US3539760A (en) * 1968-11-27 1970-11-10 American Mach & Foundry Electron beam forge welding
US3539761A (en) * 1969-02-05 1970-11-10 American Mach & Foundry Forge welding
US3626142A (en) * 1970-05-01 1971-12-07 Union Carbide Corp Electron beam machine
US3761676A (en) * 1971-05-20 1973-09-25 Farland G Mc Portable electron beam welding apparatus
US3748432A (en) * 1971-12-27 1973-07-24 Boeing Co Apparatus for welding corrugated materials by plasma electron beam welding system
US3816699A (en) * 1972-02-15 1974-06-11 Hell R Gmbh Engraving system for producing a screened rotary printing matrix with a variable diameter
US4072844A (en) * 1975-07-02 1978-02-07 Sciaky Bros., Inc. Apparatus for electron beam machining in vacuum
US4103912A (en) * 1976-08-30 1978-08-01 Paul Thome Moving sealing junction with sealing strips controlled by mechanical operators
US6530317B2 (en) 2000-12-05 2003-03-11 Creo Srl Method to engrave surface using particle beam
CN103506751A (zh) * 2012-06-20 2014-01-15 上海新力动力设备研究所 一种不锈钢筒体真空电子束焊接方法

Also Published As

Publication number Publication date
BE630465A (de)
DE1269750B (de) 1968-06-06
CH209489A (de) 1940-04-15
GB1032453A (en) 1966-06-08
CH424020A (de) 1966-11-15
NL290956A (de)

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