Abstract:
The welding method is used to lay down weld beads on metallic substrates with a thin section, e.g., of down to 0.030 inch. The process employs a plasma transferred arc which is generated at low current, e.g., between 0.5 amps and 60 amps, and with a very high superimposed frequency, e.g., 15 kHz. A low amount of heat is generated so that the thin section is not burned through. The welding powder is delivered into the arc and becomes metallurgically bonded to the substrate.
Abstract:
The welding method is used to lay down weld beads on metallic substrates with a thin section, e.g., of down to 0.030 inch. The process employs a plasma transferred arc which is generated at low current, e.g., between 0.5 amps and 60 amps, and with a very high superimposed frequency, e.g., 15 kHz. A low amount of heat is generated so that the thin section is not burned through. The welding powder is delivered into the arc and becomes metallurgically bonded to the substrate.
Abstract:
Bei einer Unterpulver-Schweißvorrichtung mit mehreren Drahtelektroden werden eine beliebige Anzahl Drahtelektroden (D) in geringem Abstand zueinander von einer entsprechenden Anzahl, gegebenenfalls in mehreren Ebenen übereinander angeordneten, angetriebenen Vorschubrollen (6) gegen die jeweils druckbeaufschlagten Gegenrollen (7) wirken, über ein an die Vorschubeinrichtung (I) angeflanschtes Schweißschwert (II) geführt. Die Drahtelektroden (D) sind untereinander durch isolierte Führungsrohre (15) getrennt. Zur Sicherstellung der Schweißstromübertragung von der am Schweißschwertende angebrachten auswechselbaren Strombacke (12) zu den Drahtelektroden (D) werden diese mit einstellbaren druckbeaufschlagten Hebeln (18) an die Strombacke (12) gedrückt.
Abstract:
An additive manufactured object production method includes: a core portion forming step of additively forming a core portion as an inner portion of an additive manufactured object by stacking first weld beads each size of which is corresponding to a first resolution; and a shell portion forming step of additively forming a shell portion as an outer portion of the additive manufactured object on a surface of the core portion by stacking second weld beads each size of which is corresponding to a second resolution higher than the first resolution after the core portion forming step.
Abstract:
A suction apparatus (1) is provided with: a first path connecting an inlet (3) and a drive opening (11) of an ejector (10); a second path connecting a suction/ejection opening (5) and an intake opening (13) of the ejector (10); and a third path connecting the inlet (3) and the suction/ejection opening (5). When the second path is connected by a path switching unit (7), a gas or an aerosol is suctioned via the suction/ejection opening (5) by means of the first path and the second path. When the third path is connected by the path switching unit (7), a compressed gas is ejected via the suction/ejection opening (5) by means of the third path.
Abstract:
Embodiments of additive manufacturing systems (100) are disclosed. In one embodiment, an additive manufacturing system (100) includes an array (30) of multiple electrodes (32) for sequentially depositing material layer-by-layer to form a three-dimensional (3D) part (51). The system (100) includes a power source (40) to provide electrical power for establishing a welding arc for each electrode (32). The system (100) includes a drive roll (50) to drive each electrode (32). The system (100) also includes a controller (80) to operate the system (100) at a first deposition rate to form first resolution contour portions of a layer of the part (51). The controller (80) also operates the system (100) at a second deposition rate to form second resolution fill portions of the layer of the part (51). The system (100) provides variable width deposition at the second deposition rate using a variable number of the electrodes (32). The first deposition rate is lower than the second deposition rate, and the first resolution is higher than the second resolution.
Abstract:
In various embodiments, metallic wires are fabricated by combining one or more powders of substantially spherical metal particles with one or more powders of non-spherical particles within one or more optional metallic tubes. The metal elements within the powders (and the one or more tubes, if present) collectively define a high entropy alloy of five or more metallic elements or a multi-principal element alloy of four or more metallic elements.