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7560662 |
Equipment and process for applying an external structural weld to piping and similarly shaped pressure boundary components
An apparatus and/or process for applying a weld overlay to a nozzle or piping spool of complex configuration is disclosed. In an exemplary embodiment, the welding apparatus comprises a mounting...
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7495193 |
Pipe seam tack welding methods and apparatus using modified series arc welding
Welders and methods are presented for short-circuit arc welding a workpiece using a modified series arc welding configuration with two electrodes via a sequence of welding cycles, in which each...
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7434718 |
Device for cutting or welding tubular workpieces or the like
The invention relates to a device ( 1 ) for cutting or welding tubes ( 3 ) or similar workpieces, said device comprising a guiding mechanism which is used to control the cutting or welding torch (...
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7414220 |
Orbital weld head
An orbital weld head includes a metal insert and rotor. The covers are made from mica laminate. A metal spring/brush that is preferably one piece side loads the rotor against the insert. The rotor...
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7335853 |
Method for orbital welding using a pulsed current
A method for the orbital welding of tubular elements held in abutment comprising the steps of striking an arc at a strike point with an orbital welder between an electrode and a seam formed by a...
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7232974 |
All position automatic welding head and method for operating the same
A welding head which can easily move the torch portion of the welding head in the circumferential direction and the vertical moving direction of the outer circumference of the to-be-welded tubes...
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7205500 |
Non-consumable electrode welding torch and welding head with the torch
An ultra-flat non-consumable electrode welding torch which allows performing a welding operation through a narrow gap between adjacent piping such as welding piping of a boiler panel, to be mounted...
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7105765 |
System and method for aligning tubes in an orbital welder
A novel orbital welder includes a body defining a tube passage, a weld tip, a rotor, a light source disposed to emit light toward the tube passage such that the emitted light will impinge upon one...
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7026568 |
Ceramic weld insulator and metal weld gear combination for an improved micro weld head component of an orbital tube welding apparatus
The invention is of an improvement to orbital welding heads and welding systems for welding pipe and tubing butt joints, consisting of a novel combination of materials, including a ceramic weld...
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6806442 |
Method and apparatus for splicing tubular heater sections
An apparatus for splicing a heatable section of a tubular heater to a cold section, the heatable section includes an outer sheath, which has a heating element therein. The cold section includes an...
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6729529 |
System and method for cutting and orbital welding thin-walled tubing
A system for providing cutting and orbitally welding thin-walled tubing. The system includes a plurality of clamping blocks that hold the tubing while the tubing is trimmed and orbitally welded....
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6646219 |
Tube clamping assembly
A tube clamping assembly comprising a first portion having a base and a clamping device carried on the base, and a second portion having a base and a clamping device carried on the base. The first...
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6566624 |
Welding assembly with nestable conductive ends
A welding material in positioned in electrically conductive relation between exterior surface portions of first and second weldable members, such as hydroformed tubes, at a location where the first...
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6559405 |
Positioning device for welding electrode
A positioning device for positioning a welding electrode near objects to be welded. A laser projects a light ray which is affixed to, and has a known spatial relationship with, the electrode. The...
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6459062 |
Apparatus and method for precisely aligning and welding two pieces of weldable material
Applicant's invention includes an apparatus and associated method for precisely aligning two pieces of weldable material and welding the two pieces, the apparatus contains means for independently...
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6433307 |
Device for welding cylindrical workpieces
The invention relates to a device for welding cylinder-shaped and rotatable elements together. An axially displaceable electrode shaft ( 1 ) is provided in a rotatably seated pipe shaft ( 8 ). The...
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6407355 |
Non-planar orbital welder
An orbital welder includes a weld tip, a rotational controller, and a translational controller. The rotational controller causes the weld tip to rotate about an axis passing through the tube to be...
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6380505 |
Method and apparatus for welding tubular members
The present invention provides a welding apparatus for forming a weld joint between abutting ends of first and second tubular members. The welding apparatus includes a housing having first and...
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6346684 |
Welding material assembly and method
A welding material assembly is constructed and arranged to position a welding material in electrically conductive relation between exterior surface portions of first and second weldable members at...
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6066823 |
Semiautomatic tube welding apparatus
The present invention relates generally to an apparatus and method for performing tube-to-tubesheet welding within box headers and, in more particular, to a GTAW welding gun that has a long...
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6060678 |
Gas shield strip clad welding system
A gas shield strip cladding welding system including a workpiece, a strip of welding material, an enclosure having an opening through which the strip of welding material passes, a feeder for...
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6051803 |
Pipe cutting apparatus
Plasma arc cutter apparatus for cutting large diameter pipe from within the pipe, a frame with adjustable legs, a locking device to secure the apparatus within the pipe, apparatus to adjust the...
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6036076 |
Continuous section pipe and pipelike structures
A system of machined and welded pipe with no connectors or scarfed welds and method to provide a continuous section for pipe and pipe-like structures; displaying electron beam welding for...
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6018136 |
System for supervising piping work
A system of the invention for supervising piping work comprises a machine for performing piping work such as welding of pipes or tightening of pipe joints under predetermined conditions, check...
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5914058 |
Method to control starting and stopping a plasma arc welding keyhole
An improved plasma arc welding arm method and apparatus for keyhole welding rotating workpieces has an arcuate gear track supporting a corresponding arcuate geared cart bearing a plasma arc welding...
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5844190 |
Orbital welding apparatus
An orbital welding apparatus (B) comprises a modular weld head apparatus (10) including a rotor assembly (20) which carries a welding electrode (26). The rotor assembly is rotated about an axis for...
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5841089 |
Small size tube welding apparatus
The subject invention is a tube welding apparatus for the welding of small tubes, such as those one-sixteenth of an inch to one-half inch in diameter. The tube welding apparatus includes a drive...
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5837966 |
Apparatus for weld head to pipe joint alignment for welding
An improvement to orbital welding heads and welding systems for welding pipe and tubing butt joints, consisting of a removable or retractable detector module in the welding head for sensing the...
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5750955 |
High efficiency, variable position plasma welding process
In a plasma welding process, a voltage is applied between an electrode and an object for welding with injecting a plasma gas to generate a plasma, and welding is performed with taking the plasma as...
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5710403 |
Orbital weldhead with integral cooling
An orbital weldhead having minimum thickness incorporates integral cooling and includes a nonconductive housing having a circular aperture for insertion and removal of the workpiece. A...
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5685996 |
Plasma arc pipe cutting apparatus
A plasma arc pipe cutting apparatus incorporates a plasma arc torch adjustably coupled to a motor-driven ring which transports the torch in an orbit about the pipe to be cut. The apparatus includes...
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5679271 |
Apparatus and method for precisely aligning and tack welding two pieces of weldable material
Applicant's invention includes an apparatus and associated method for precisely aligning two pieces of weldable material and tack welding the two pieces together. The apparatus contains means for...
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5655699 |
Workholder for precision orbital welding
A workholder to hold a workpiece, especially an end fitting, in accurate axial and angular orientation for orbital welding. It can optionally provide protection for sensitive surfaces on a fitting...
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5571431 |
Method and apparatus for controlling and simultaneously displaying arc welding process parameters
A system (and method) of controlling and simultaneously displaying arc welding torch parameters includes a power supply for supplying weld voltage and current to the torch in accordance with demand...
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5288963 |
Actively cooled weld head cassette
An orbital welding head for joining two tubes positioned end-to-end includes a welding electrode which is rotated around the tubes and a pair of clamps for holding the tubes in the correct position...
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5223686 |
Orbital welding apparatus with safety interlock
An orbital welding apparatus includes a first housing defining a weld head assembly and a circular rotor disposed therein for rotation about a first axis. A welding electrode is carried by the...
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5220144 |
Water cooled orbital welding head
A water cooled orbital welding apparatus permits continuous welding of pipes and tubes in a limited space by including a liquid cooled plate inside a head assembly to remove heat from the gear...
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5196664 |
Orbital welder for high purity welding
An orbital welder for welding tubes includes a welding head and a hinged clamp arrangement which grasps the tubes and holds them in abutment for welding. The clamp is constructed to discharge...
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5171953 |
Welding device for the replacement of a heating rod of a pressurizer of a pressurized-water nuclear reactor
To ensure the sealed fixing of a replacement heating rod (4) on a collar (3) for passing through the casing (1) of a pressurizer, a weld is made in a single pass by a regulated MIG process. A shaft...
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5107090 |
Welding head
A clamp intended for the end-to-end welding of two tubes disposed in accordance with an axis (3) by an electrode (14) operating in a circular movement (18) includes two collars (1, 2), mounted...
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5099098 |
Welding apparatus and method for welding a joint between abutting circular workpieces
Arc welding apparatus and method for precisely welding abutting pipe end portions defining an interface having a seam or joint to welded. The apparatus includes a roller assembly for precisely...
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4975554 |
Rotating weld head for tube interiors
A welding apparatus (10) for longitudinally traversing and circumferentially welding within the interior of a tube. A rotating weld tip and gas supplying containing head is mounted on and...
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4922073 |
Thick tube welder
A thick tube welder for welder together a tubular end fitting and a tube. The end fitting and the tube are placed in axial alignment within a welding head housing with the end fitting being located...
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4918283 |
Method of and apparatus for conducting plasma welding
A plasma welding method has successive steps including pre-heating of members to be welded, tack welding of the members for tentatively fixing these members, keyhole welding for completely welding...
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4896812 |
Double downhill pipe welder
A pipe welding apparatus which utilizes a pair of welding electrodes which are at least ninety degrees spaced apart relative to a cylindrical workpiece. The welding procedure only occurs during...
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4880956 |
Device for radial machining and welding element
A device for radial machining and welding of a tubular body, said device comprising a tool support which can be placed around the tubular body and including four rollers assuring its guiding in...
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4868367 |
Rigid collet assembly for cylindrical workpieces
A clamping device for holding cylindrical workpieces having a nominal radius R which varies from a minimum of (R-A) to a maximum of (R+B), where A and B are the limits of the tolerance range for...
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4857701 |
Internal welding head assembly
Internal welding head apparatus, wherein a welding torch is mounted on a pivotal support for movement of the torch toward and away from the weld site, and wherein the torch is carried on a rotative...
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4857690 |
Cassette welding head apparatus
An apparatus for welding together coaxial tube sections which utilizes a welding electrode housing and a mounting housing. The welding electrode housing is to be clamped onto the tube sections and...
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4845330 |
Rotary-electrode inert-gas arc welding machine
The outer shell of the linking housing (7) of the welding machine consists of a first casing (7a) and a second casing (7b), assembled together through a flat surface (44). The electrode support...
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