Abstract:
A consumable assembly for use in an arc welding apparatus is provided that includes a nozzle assembly having a nozzle body (100), an insulator (92) disposed within the nozzle body (1000), and a nozzle insert (94) disposed within the insulator (92). The nozzle insert (94) includes an internal gas diverter (110, 112). A contact tip (24) is disposed within the nozzle assembly and includes at least one aperture extending from an exterior portion to an internal cavity, an exit orifice, a distal end face, and an exterior surface extending between the at least one aperture and the distal end portion of the contact tip (24). The internal gas diverter directs a flow of shield gas exiting the at least one aperture along the exterior surface of the contact tip (24), and a principal distance from the at least one aperture to the distal end face is varied to adjust the flow of the shield gas for improved cooling.
Abstract:
In some aspects, nozzles for plasma torches can include a nozzle body having a proximal end and a distal end that define a nozzle body length and a longitudinal axis. The body can include an exit orifice defined by the distal end; a plenum extending from the proximal end to a plenum floor, a distance from the plenum floor to the distal end defining a plenum floor thickness, and a distance from the plenum floor to the proximal end defining a proximal end height; and a bore extending from the plenum floor to the exit orifice that has a bore length and a bore width. The nozzle body has a nozzle width in a direction transverse to the longitudinal axis. The nozzle body length is greater than the width and a ratio of the proximal end height to the plenum floor thickness is less than 2.0.
Abstract:
A welding assembly including a current generator, a first electrode (12) electrically coupled to the current generator, the first electrode including a first engagement (22) surface, and a second electrode (14) electrically coupled to the current generator, the second electrode including a second engagement surface and defining a recess (26) in the second engagement surface.
Abstract:
A welding implement and a method of extracting heat from a welding implement (32) are disclosed. The welding implement (32) includes one or more heat pipes (96) which transfer thermal energy away from the torch head (102). A fluid, such as a shielding gas, may then convectively transfer the thermal energy away from the welding implement (32). The present invention thus provides a handheld welding implement (32) that is compact, such that it can be used in confined spaces, and operated for longer periods of time, since the improved heat dissipation helps to maintain the welding implement at a temperature that an operator may hold.
Abstract:
A torch and a welding system having a pair of gas paths are disclosed. The torch includes a wire feed assembly and is connectable to a welding-type power source and a source of shielding gas. A power signal suitable for welding applications and a shielding gas are communicated through the torch. The shielding gas is communicated through the torch by a pair of gas passages.
Abstract:
The present invention relates to a device for cooling an electrode holder (1) for manual arc welding with coated electrodes, as well as the electrode (4) and the electric supply cable (5), said cable (5) being surrounded by a tube (10), and said electrode holder (1) comprising a handle (2) provided with a projecting electrode pin (11) having threads (12) and a conical tip (13), and a top part (3) having a bore (16) provided with threads (17) and arranged to receive the electrode pin (11), and a fixing hole (7) extending away from and at right angles to the bore (16) to the periphery of the top part (3), the conical tip (13) of the electrode pin (11) being adapted to urge an electrode (4) inserted in the fixing hole (7), into line or point contact with the wall of the fixing hole. According to the invention, the electrode pin (11) has a channel (15) connecting the inlet end of the tube (10) in the electrode holder (1) to the fixing hole (7) for the electrode (4), cooling gas, preferably air, which is supplied to the end of the tube (10) remote from the electrode holder (1), flowing through the tube (10) and the channel (15) in the electrode pin (11) and being caused to flow out around substantially the entire circumferential portion of the electrode (4) in the fixing hole (7) therefor, and out from said fixing hole (7).
Abstract:
During operation of a welding torch (10), electrode wire (17) travels through a contact tip assembly (14) directly into a weld area. The assembly (14) is exposed to elevated temperatures which can cause damage from weld spatter and increased deterioration of the assembly (14). In the welding torch (10), a liquid is received by first apparatus (44) and gasifies owing primarily to the elevated welding temperatures at the first apparatus (44). The result is to cool the assembly (14) and substantially overcome the problems of temperature. In a nozzle (18) equipped torch (10), the nozzle (18) directs a portion of the gasified liquid to the welding area for shielding the welding operation. In one aspect of the nozzle (18) equipped torch (10), a contact tip (25) of the contact tip assembly (14) is positioned in contact with the nozzle (18) for taking better advantage of the first apparatus (44) to cool both the contact tip (25) and nozzle (18).
Abstract:
Die Erfindung betrifft eine Vorrichtung und ein Verfahren, welches mittels der Vorrichtung durchgeführt wird, für ein gesteuertes Kühlen und/oder Erwärmen metallischer Werkstücke I, II (8,9) im Temperaturfeld (14) beim Schweißen, thermischen Trennen, Löten, Auftragsschweißen oder partiellen Härten. Hierbei gelingt es, durch die Ausbildung einer im Wesentlichen einem Brenner (1), einem thermischen Brenn-, Plasma- oder Laserschneideapparat oder einem Lötapparat in der äußeren Form nachfolgenden konstruierten Vorrichtung, die mit ihm fest verbunden ist und ringförmig angeordnete Kühlgaszuführungen (3) mit Kühlgasaustritten (4) enthält, dass im Bereich des Wirkens vom Temperaturfeld (14) auf ein oder auf mehrere Werkstücke I, II (8, 9) bereits während des aktiven Arbeitens und Vorschubes eines modifizierten Werkzeuges Areale des Temperaturfeldes (14) nacheinander oder auch zeitgleich gekühlt und/oder erwärmt werden können. Die Vorrichtung realisiert ein offenes Verfahren zur Kühlung, Erwärmung des bzw. der zu bearbeitenden Werkstücke I, II (8, 9). Die jeweils Werkstoff- und verfahrensspezifisch optimale Abkühlgeschwindigkeit wird dabei neben der Durchflussmenge besonders über die Temperatur des Kühlgases gesteuert. Dazu wird das zur Kühlung des Temperaturfeldes vorgesehene kryogene Gas in der Mischung eines flüssigen und gasförmigen Anteils verwendet."
Abstract:
A consumable cartridge for a liquid-cooled plasma arc torch is provided. The consumable cartridge comprises a cartridge frame including a proximal end having an end surface, a distal end and a body having a central longitudinal axis extending therethrough. The cartridge configured to form a radio-frequency identification (RFID) interface with a torch head. The consumable cartridge also comprises an arc emitter and an arc constrictor affixed to the cartridge frame at the distal end and an RFID mounting feature formed on or in the cartridge frame adjacent to the end face. The RFID mounting feature is non-concentric with the central longitudinal axis of the body. The consumable cartridge further comprises an RFID tag disposed in or on the RFID mounting feature for transmitting information about the cartridge to a reader device in the torch head when the cartridge is connected to the torch head.
Abstract:
A consumable cartridge frame for a liquid-cooled plasma arc torch is provided. The consumable cartridge frame includes an insulator body configured to be disposed between a torch head and a cartridge tip. The consumable cartridge also includes a first cooling channel, disposed in the body, configured to conduct a first fluid flow received from the torch head to contact a component of the cartridge tip connected to the cartridge frame. The consumable cartridge further includes a first return channel, disposed in the body, configured to conduct at least a portion of the first fluid flow from the component to the torch head. The first cooling channel and the first return channel are non-concentric in relation to a central longitudinal axis of the body.