Matches 251 - 300 out of 954 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
4409466 Method of manufacture of a hoop for the vessel of a nuclear reactor  
A method of manufacturing a hoop for a nuclear reactor vessel, equipped internally with projecting guide blocks serving for the guidance of the internal equipment. The method consists in coating an...
4408112 Welding insert ring and method of welding therefor  
The method of and apparatus for welding of a pair of in-line pipes which utilizes a pair of insert rings. Initially, in the root area of the weld there is located an inner insert ring, which is...
4400611 Welding at pressures greater than atmospheric pressure  
When metal inert gas (MIG) welding is carried out at normal atmospheric pressure, the electrode is made positive with respect to the workpiece because the use of a negative electrode gives little...
4393297 Method for the arc cutting of metal  
Disclosed is an improved method for arc cutting of metal, more specifically a method in which an electric arc is formed between the metal and a cutting torch and gas is blown into the cut during...
4392044 Method for detecting whether dissimilar metals are being welded  
A method for detecting whether dissimilar metals or alloys are being welded together is disclosed. Metals or alloys are welded together and electrical leads connected to a multi-purpose...
4386728 Hermetic sealing of abutment joints by non-vacuum focused energy welding  
A method of hermetically sealing by NVFE (non-vacuum focused energy) welding abutment joints formed by elongate surfaces. At substantially spaced intervals narrow shallow vent grooves are formed...
4386259 Arc welding process using a consumable stranded wire electrode  
An arc welding process using a consumable stranded wire electrode which is formed either by integrally intertwisting a plurality of wire elements substantially of the same sectional area such that...
4382172 Method for fabricating a watch case  
A method for fabricating a watch case comprising the steps of placing contact points of a bezel and a watch body to face to each other, applying pressure to said contact points through electrodes,...
4375720 Method of end-to-end cable joining for use with small diameter, armored cable having compressed mineral insulation  
Cable ends (1 and 2) are to be joined. The cables are armored by stainless steel sheaths, and have two conductors (9 & 11, and 8 & 10 respectively) insulated by means of compressed mineral...
4362919 Method of welding using a covered tungsten electrode  
A method of welding which utilizes a metal electrode core encased within a pre-sintered ceramic insulating sleeve. The method comprising, preplacing a welding wire in the welding kerf formed...
4359599 Electrical conductor connection and method of making same  
Two improvements to the electrical conductor connection disclosed in U.S. Pat. No. 4,163,869. The first is a new and improved process for forming by means of multiple timed MIG arc welding, an...
4350868 Follow-up control apparatus for controlling the movement of a welding weaving device  
A method and apparatus for follow-up controlling the weaving movement of a weaving device in consumable electrode type arc welding, in which welding currents at both ends of the left and right side...
4350869 Method of automatically welding with a non-consumable electrode  
A method for maintaining a constant arc gap between the electrode and the weld puddle by controlling the addition of filler wire based on the arc voltage.
4347426 Arc-spot welding method and apparatus  
A method and apparatus for making a plurality of arc-spot welds in a predetermined pattern is disclosed. A plurality of welding torches are mounted upon a carriage which is longitudinally movable...
4346280 Method and apparatus for building up surface layer with alternating composition  
A method comprises feeding two or more, if necessary, alloying materials and simultaneously changing the ratio thereof. The ratio of the alloying materials is changed at the moment of transition...
4342898 Method of surfacing and apparatus for controlling same  
A surfacing method comprises feeding alloying material to the weld pool in between two consumable electrodes, with the distance between those electrodes being determined depending on the diameter...
4341944 Reduction of arc blow in multi-electrode welding  
A method and apparatus for reducing "arc blow" in multi-electrode welding of a metallic workpiece. Arc blow is produced by interaction between the magnetic fields produced by the closely spaced...
4333001 Method for welding an impeller  
A method and an apparatus for welding an impeller by using TIG process are provided in which one of the blades to be welded to a side plate or shroud plate is disposed so as to form a V-channel...
4329561 Method of ensuring the maintenance of constant quality of spot welds  
A method of improving the reproducibility of the welds in an electric spot welding machine comprises prior to the initiation of a welding operation passing a preheating current of lower magnitude...
4317984 Method of plasma treatment of materials  
Disclosed is a method of plasma treatment of materials comprising introducing a plasma-forming mixture including carbon-containing compounds chosen from the class of hydrocarbons or carbon monoxide...
4315127 Electro-slag welding method  
An electro-slag welding method using as a consumable electrode a strip of mild steel and an electric insulating material. The steel strip has a width substantially equal to the thickness of the...
4314132 Arc welding cupro nickel parts  
A weld and process for making same and usable in the arc-welding of cupro-nickel (ASME P.34) parts particularly pipe ends using a flux-coated stick electrode, characterized in that an "open V" butt...
4307281 Method of arc welding  
A method of consumable electrode arc welding with the end of the electrode submerged into the molten pool wherein the maximum cross sectional dimension of the electrode end to be submerged into the...
4302655 Method and device for adaptive control of the weld parameters in automatic arc welding processes  
A method and a device for adaptive control of the weld parameters in automatic arc welding processes to weld together two workpieces. The arc is arranged to oscillate in the transverse direction of...
4302652 Method of welding the ends of submerged pipes by sleeve abutment  
A method of welding the ends of submerged pipes in a gaseous atmosphere at any depth comprises isolating the ends of the pipes by introducing obturators therein and then introducing the pipe ends...
4302658 Welding silicon steel  
A process for improving the mechanical properties of welded silicon steel. The weld heat affected area of welded silicon steel is heat treated while retaining the welded lengths within a clamping...
4302657 Method for arc-welding the blades to the disc or counterdisc of rotary machine rotors  
For welding rotor blades to a rotor disc of a rotary machine, a welding process is used wherein grooves, called blind slots, are formed through the disc wall thickness but not to the extent to pass...
4298155 Method for making an axle spindle  
A spindle for an axle is capable of supporting a vehicle wheel which is rotatably mounted thereon. The method for forming such a spindle includes providing a hollow tubular blank having a generally...
4296306 Method of welding corrugated metallic materials  
In an automatic arc welding method for welding metallic materials having a vertically curved weld line, a change in the arc voltage is compared with a arc length setting voltage and the resulting...
4296300 Method and device for welding protected metal parts  
A method and apparatus for welding or brazing of sheetmetal or plate covered with a temperature degradable protective coat, such as zinc or plastic. A cooling saddle supplied with liquid nitrogen...
4295029 Battery strap connection welding method  
A unitary welded connection between a projecting leg of a cell connecting strap and collector tabs emanating from the plates of the cell is disclosed, the leg having boss protrusion(s) to eliminate...
4294662 Process for the final assembly of a nuclear reactor vessel  
The invention concerns a process for the final assembly of a nuclear reactor vessel comprising two sub-assemblies which are brought together and welded along mating surfaces. At least three female...
4295030 Plasma-arc cutting method  
A method for cutting by a plasma arc in which the nozzle is directly contacted with the base metal to be cut and is at the same electrical potential, and wherein the electrode is first approached...
4292493 Method for decomposing ozone  
In welding or working operations using an electric arc a nitrogen compound is introduced into the working or welding area for the purpose of decomposing ozone in said area. The nitrogen compound is...
4292496 Vertical plate welding using double bevel joint  
A method is provided of vertical gas metal-arc two-sided welding of thick plate in a single welding pass on each surface of the plate. The method includes providing a first weld groove on one...
4291220 Method of welding utilizing both consumable and non-consumable electrodes  
A method of welding utilizing consumable and non-consumable electrodes blanketed with inert gas to weld with a minimal amount or no preheating.
4291217 Process for underwater plasma cutting of workpieces  
Workpieces, such as structural steel, are cut under water by a plasma burner having a needle electrode with the plasma arc slightly under the water level and the plasma arc being enveloped during...
4287405 Process and apparatus for exhausting fumes produced by arc welding  
During arc welding, optical radiation emitted from an arc is detected by means of a photoelectric device, and an electric detection signal from the photoelectric device is used for controlling the...
4286138 Welding methods and apparatus including alternate weld metal depositions along opposite sides of a weld  
Welding methods and apparatus, wherein a welding electrode is oscillated by a motor-driven oscillator in back and forth movements transverse to a weld joint, and an alternating welding current is...
4283616 Gas metal arc welding method for preparing misaligned tube holes  
A welding apparatus including a nozzle assembly having a contact extension and a contact tip for guiding a consumable welding wire into a tube hole. The consumable welding wire is guided into the...
4280042 Process and installation for automatic ignition of a plasma cutting torch  
The invention relates to a plasma cutting plant comprising a principal generator feeding a plasma arc between a workpiece and an electrode of a torch comprising a tube, with initial ignition by...
4280040 Method of arc welding porous sheet metal  
A method for manufacturing a gas turbine combustion chamber that preserves cooling fluid holes therein. Passages are formed in one surface of each of two metal sheets. A plurality of cooling fluid...
4278863 Method of making welded structure  
Large metal structures for heavy duty machines are prefabricated from subassemblies. The subassemblies are made with matched grooves, and held together. The subassemblies are machined taken apart...
4273987 Method of controlling synchronized movement of backing shoe in automatic one-side welding  
A method of controlling the synchronized movement of a backing shoe in an automatic one-side welding of the type in which a light-transmittable backing material is placed in close contact with the...
4267428 Contoured welding rod  
A contoured welding rod forms a stringer bead to couple the adjacent bevelled end surfaces of an aligned pair of metal pipes or metal sheets. The welding rod is fabricated from an uncoated alloy...
4258242 Welding process for production of a steel pipe  
Disclosed herein is an improvement of a welding process for welding a steel pipe, wherein a gas metal arc welding is performed to form the first welding layer and a submerged arc welding is...
4258247 Method of producing welded joint including non-welded portion  
One metallic plate is set upright on another metallic plate and a filler fills each corner formed of both plates. A deposit metal is deposited on and adjacent to each filler to weld the plates to...
4255641 Method of outside welding of pipelines  
The specification discloses a method and apparatus for assuring the integrity of outside weldings of pipelines. Pipe sections are prepared for welding by forming a beveled profile with a relatively...
4254322 Narrow weld-groove welding process and apparatus therefor  
A narrow weld-groove welding process, in which a bare welding wire is fed into a weld groove defined between the opposed surfaces of two pieces of metals for producing a metal arc therein for...
4249061 Method and apparatus for arc welding  
A process for adjusting a welding torch with respect to a weld joint formed between two workpieces is disclosed, including determining operating quantities for arcs located in at least two...
Matches 251 - 300 out of 954 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >