Abstract:
The welding device comprising an electric energy source (1), a welding head (2) connected to the electric energy source (1) and provided with means for receiving at least one tie element, means for positioning the welding face of the tie element with respect to the welding spot on the work piece and means for exerting pressure between the tie element and the work piece, a control-member (3) for determining the energy to be dispensed by the electric energy source and an energizing member (4) for establishing an arc striking circuit between the electric energy source (1), the tie element and the work piece whereby the arc-welding device furthermore comprises a memory member (5) connected to the control-member (3) for storing data indicating the relationship between the energy to be dispensed by the electric energy source (1) and the diameter orthe surface of the welding face and/or the composition of the material of the tie elements to be welded and/orthe composition of the material of the work piece and/or further welding parameters, a measuring member (6) connected to the control-member (3) for producing signals representative of the diameter or the surface of the welding face and/or the composition of the material of the tie elements to be welded and/or the composition of the material of the work piece andior further welding parameters, a searching member (7) connected to the control-member (3) for selecting, in response to the signals of the measuring member (6), in the memory member (5) the energy to be dispensed by the electric energy source (1) and for producing a signal representative of the energy to be dispensed and a setting member (8) connected to the control-member (3) and to the electric energy source (1) for setting, in response to the signal of the searching member, the electric energy source (1) in a manner such that subsequent to actuation of the energizing member (4), it gives off the energy determined by the memory member (5).
Abstract:
In this technique a test voltage no greater than the initiating voltage for the arc is first applied across the pieces (12,18) to be welded. The welding cycle is then performed if, and only if, an arc is detected by a photodetector (22, 24), which are results from the test voltage.
Abstract:
Bolzenschweißvorrichtung, mit einem auf einem Grundgestell (10) in zwei zueinander senkrechten Rich tungen verstellbaren Werkstückaufnahmetisch (12) und einem oder mehreren an grundgestellfesten Trägeranord nungen (14) relativ zum Werkstückaufnahmetisch (12) verstellbaren Schweißköpfen (44) mit jeweils einer Vor richtung zur Aufnahme und elektrisch leitenden Halterung eines jeweils anzuschweißenden Bolzens (48) und einer mit dem Schweißkopf (44) leitend verbindbare Schweiß stromquelle. Der Werkstückaufnahmetisch (12) ist mittels nu merisch gesteuerter Stellantriebe (30; 32) relativ zum Schweißkopf (44) verstellbar, und die Schweißparameter der Schweißstromquelle sind numerisch einstellbar. Der Schweißkopf (44) ist an einer Halterung (38) ver stellbar geführt, die ihrerseits an einem grundgestellfesten Trägerarm (34; 36) der Trägeranordnung (14) senkrecht zum Werkstückaufnahmetisch (12) manuell oder nume risch gesteuert linear und drehbar verstellbar ist. Die Datenein- und -ausgabeeinheit (70) der numeri schen Steuerung ist mittels eines Tragarmes (72) an dem Grundgestell (10) verstellbar gelagert und enthält ein Be dienungspult (70) mit einem Datensichtgerät (84) und einem Tastenfeld (86).
Abstract:
An anchoring assembly (11) for anchoring a liner of a cured lining material arranged to be applied in liquid form to a metal object provided with said anchoring assembly (11), said anchoring assembly (11) comprising an elongated mounting pin (17) and a ferrule (15) provided at a first end of said elongated mounting pin (17), wherein said elongated mounting pin (17) is arranged to be mounted, at said first end, to said metal object, said anchoring assembly (11) further comprises a plurality of spaced anchor fins (2), wherein said plurality of spaced anchors fins (2) are connected to said elongated mounting pin (17) at a second end and extend radially outwardly with respect to said elongated mounting pin (17), wherein said ferrule (15) comprises a radially outwardly extending place holder part (14) arranged to be held by a ferrule holder (12) during mounting of said elongated mounting pin (17), at said first end, to said metal object.
Abstract:
A system is provided comprising a hardened stud body (102) and an unhardened stud subunit (104) coupled to the hardened stud body (102). The hardened stud body (102) may comprise a first composition having by weight between 17% and 21% chromium, between 2.8% and 3.3% molybdenum, between 50% to 55% nickel, and between 4.75% and 5.5% niobium. The unhardened stud subunit (104) may comprise a second composition having by weight between 20% and 23% chromium, between 8% and 10% molybdenum, at least 58% nickel, and between 3.15% and 4.15% niobium.
Abstract:
A welding apparatus for joining a weldable fastening element onto a workpiece by a welding process, wherein the welding apparatus comprises: an electric welding power source; a fastening element holding device for holding the fastening element during welding; a first drive device for moving the fastening element holding device along a first axis; a cleaning electrode holding device for holding a cleaning electrode along a second axis; and wherein the cleaning electrode is connectable to the electric welding power source. The fastening element holding device and the cleaning electrode holding device are mounted on a common tool carrier and the tool carrier is movable on a joining head by a tool carrier drive from a joining position to a cleaning position, and in the joining position the first axis defines a joining axis, and in the cleaning position the second axis is aligned with the joining axis.