摘要:
Die vorliegende Erfindung betrifft einen Schweißbrenner (100) zum Schweißen oder Schneidbrenner zum Schneiden mittels eines Lichtbogens (120) mit einer nicht abschmelzenden Elektrode (10), wobei die Elektrode (10) dazu eingerichtet ist, mit einem Lichtbogenstrom bestromt zu werden, ein entsprechendes Verfahren und eine Elektrode (10) für einen Schweißbrenner (100) zum Schweißen oder einen Schneidbrenner zum Schneiden mittels eines Lichtbogens (120), wobei die Elektrode (10) einen Nutbereich (11) aufweist, wobei die Elektrode (10) in diesem Nutbereich (11) einen geringeren Durchmesser (12) aufweist als in den an diesen Nutbereich (11) angrenzenden Bereichen (11a, 11b) der Elektrode (10), und/oder wobei die Elektrode einen Isolationsbereich aufweist, wobei zumindest ein Teil der Querschnittsfläche der Elektrode in dem Isolationsbereich aus einem schlecht leitenden oder nicht leitenden Material gebildet ist, und/oder wobei die Elektrode dazu eingerichtet ist, zwischen zwei Stromkontaktpunkten mit einem Heizstrom unabhängig von dem Lichtbogenstrom bestromt zu werden und/oder wobei der Schweißbrenner oder Schneidbrenner als ein Plasmaschweißbrenner zum Plasmaschweißen bzw. als ein Plasmaschneidbrenner zum Plasmaschneiden ausgebildet ist, wobei die Elektrode und ein weiteres Element des Plasmaschweißbrenners bzw. des Plasmaschneidbrenners dazu eingerichtet sind, mit einem Pilotlichtbogenstrom bestromt zu werden, wobei eine Einstelleinrichtung für den Pilotlichtbogenstrom vorhanden ist, mittels derer der Pilotlichtbogenstrom in Abhängigkeit von dem Lichtbogenstrom einstellbar ist.
摘要:
Electrically isolated gas cups for plasma transferred arc welding torches, plasma transferred arc welding torches including such gas cups, and related methods are disclosed. In one embodiment a gas cup includes a dielectric portion sized and configured to couple with a torch body and electrically isolate the gas cup from the torch body. In additional embodiments, a plasma transferred arc welding torch includes an anode, a cathode, a torch body coupled to the anode and the electrode, and a gas cup at least partially surrounding the anode and electrically isolated from the torch body. In further embodiments, a method of coupling a gas cup to a plasma transferred arc welding torch includes coupling a dielectric structure to a gas cup and coupling the dielectric structure to a torch body to electrically isolate the gas cup from the torch body.
摘要:
A positioning device (13) for producing a light signal (32) to position a robot tool relative to a workpiece (14) is provided. The positioning device (13) comprises a frame (16) and a pair of light sources (22, 24) mounted at the free end of the frame and arranged to direct a pair of light beams (28, 30) therefrom in converging directions which intersect with each other and provide a light signal (32) at a predetermined distance from the free end of the frame (16). The positioning device (13) can include two pairs of light sources to generate two pairs of intersecting light beams (28, 30). The two pairs of light sources (22, 24) can be arranged so that the two pairs of light beams (28, 30) are located substantially 90 degrees apart.
摘要:
The present invention relates to arc welding torch and a method of extracting fume gas from a welding site. The torch comprises a metal electrode and at least one shield gas port adapted to direct a shield gas curtain around the metal electrode and a welding site. At least one shroud gas port is spaced radially outward from the shield gas port and adapted to impart to an exiting shroud gas a radially outward component of velocity. Fume gas is preferably extracted from a position radially intermediate the shield gas curtain and the shroud gas curtain.
摘要:
A welding implement, such as a TIG welding torch. The welding implement comprises a torch head (14) and a thermal storage member (76). The torch head is operable to conduct electricity to a welding electrode (32) disposed therein. The thermal storage member (76) is adapted to store heat from the torch head during operation of the torch and to release the heat when the torch is not operated. The thermal storage member (76) is electrically isolated from the torch head by an electrical insulator (78). The welding implement may comprise a tube (72) coupled to the torch head to conduct gas and electricity to the torch head. The welding implement may also comprise a second tube (78) disposed around the tube proximate to the torch head to increase heat transfer from the torch head to the tube.
摘要:
The invention relates to a burner (10) comprising a non-melting electrode, such as a plasma burner, a TIG burner, or a burner for a laser welding process, said burner comprising a body (27), a handle (28), and an associated set of tubes (23), at least two wire supplying devices (30, 31) respectively supplying one welding wire (13, 32) or an additional material. The invention also relates to a welding method using one such burner (10). In order to provide one such burner (10) with a very simple and compact structure comprising two wire supplying devices (30, 31), said wire supplying devices (30, 31) are laterally fixed in relation to the burner body (27) or the handle (28) or the set of tubes (23), or beneath the same, and one autonomous receiving element (43) for the welding wires (13, 32) or the additional materials is connected to the burner body (27) in such a way that the supply of the welding wires (13, 32) or additional materials extends beneath the burner body (27) into the centre of the welding process.
摘要:
The invention concerns a gas lens housing (20) for arc-welding or flame cutters with a non-melting electrode (4), in particular for T.I.G. welding. According to the invention, a torch member (1) comprises a housing (2) for accommodating an electrode holder (3) which optionally comprises in a front, downstream section (26) collets (28) with expansion slots (8) for clamping the electrode (4) in place. An annular duct (24) used as a protective gas duct is formed between the electrode holder (3) and a housing casing (22) and a gas lens (6) is disposed in the annular duct (24) or torch nozzle (5). The gas lens housing (20) is mounted with play at a front end (30) of the electrode holder (3).
摘要:
An electrode structure of a non-transfer-type plasma torch which exhibits small-current and high-tension operation characteristics, which heightens the plasma jet energy efficiency, which lengthens the electrode life, and which produces a stable plasma arc column. The electrode structure is provided with an intermediate electrode (2) which is interposed between a cathode (1) and an anode (3) maintaining electric insulation to generate pilot arc by r.f. discharge relative to the cathode (1), and an operation gas branch hole (14) provided between the anode (3) and the plasma jet nozzle (5) so that a discharge space (6) may communicate with the exterior of the torch. This enables the distance of a discharge space to be lengthened between the cathode (1) and the anode (3) and the flow rate of the operation gas to be controlled. Further, the anode (3) is electrically insulated from the nozzle (5).