摘要:
The invention relates to polymeric pipes reinforced with a metal casing, which are used for transporting oil and gas, acids, alkali products, drinking water and industrial water, and also in the transportation of aggressive and neutral pulps, for example, in the event of the underground leaching of rock. What is claimed is: a metal-containing polymeric reinforced pipe comprising a welded metal casing and a polymeric matrix having an amorphous-phase-based molecular structure. The metal-containing polymeric reinforced pipe is produced by extrusion molding with simultaneous feeding of a polymer melt and the reinforcing metal casing into the mold cavity, followed by intensive cooling of the internal and external surfaces of the pipe being molded. The technical result of the invention is an increase in the quality and endurance limit in the radial direction of the metal-containing polymeric reinforced pipe, with an increase in productivity of the process for manufacturing said pipe, and also an increase in the strength and technological effectiveness of a pipeline constructed from the pipes produced.
摘要:
A filler material guide nozzle assembly (12A) for feeding fusible filler metal wire (10) or other metal forms into reduced-width, high-aspect-ratio (ratio of depth to width) metallic joints (2) with control and stability of the filler metal position as it enters the molten pool area. The filler material guide nozzle assembly is designed with a thin but stiff non-circular cross-sectional shape, with its width dimension significantly greater than its thickness dimension, and can be utilized in very reduced-width welded or otherwise fused joints to provide the accuracy and stability required for reliable filler material addition. During use with welding, brazing and similar processes, the outlet end of the nozzle is located within the joint near the bottom, close to the area (4) to be fused. The width dimension of the nozzle apparatus is oriented parallel to the depth of the weld joint, and the thickness dimension is oriented perpendicular to the depth of the joint. The thickness of the nozzle apparatus is less than the thickness of the joint between the components to be fused with the filler metal, allowing the outlet end of the nozzle to be fitted within the joint and in closer proximity to the molten pool during the joining process.
摘要:
An eine Niederspannungs-Gleichrichterschaltung ist eine Kondensatoranordnung angeschlossen ist, die einen Strom für einen Lichtbogen liefert. Das technische Problem ist die gegenseitige Fixierung von Bauteilen, insbesondere von Zahnprothesenteilen aus Edelstahl und Edelmetallegierungen in freier Ausrichtung oder auf dem Modell. Die Kondensatoranordnung ist über Schweißzangen (6, 7) mit den zu schweißenden Teilen verbunden, und der Lichtbogen brennt zwischen den zu schweißenden Teilen.
摘要:
A filler material guide nozzle assembly (12A) for feeding fusible filler metal wire (10) or other metal forms into reduced-width, high-aspect-ratio (ratio of depth to width) metallic joints (2) with control and stability of the filler metal position as it enters the molten pool area. The filler material guide nozzle assembly is designed with a thin but stiff non-circular cross-sectional shape, with its width dimension significantly greater than its thickness dimension, and can be utilized in very reduced-width welded or otherwise fused joints to provide the accuracy and stability required for reliable filler material addition. During use with welding, brazing and similar processes, the outlet end of the nozzle is located within the joint near the bottom, close to the area (4) to be fused. The width dimension of the nozzle apparatus is oriented parallel to the depth of the weld joint, and the thickness dimension is oriented perpendicular to the depth of the joint. The thickness of the nozzle apparatus is less than the thickness of the joint between the components to be fused with the filler metal, allowing the outlet end of the nozzle to be fitted within the joint and in closer proximity to the molten pool during the joining process.
摘要:
A fusion welding method is provided for fusion welding at juxtaposed interface surfaces (24,28) a first member (22), for example made of a first metal based on at least one of Ru, Rh, Pd, and Pt, with a second member (26) made of a second metal, for example a high temperature alloy based on at least one of Fe, Co, and Ni, including at least one identified element, for example Al, that can form a continuous layer of a brittle intermetallic compound with the first metal that is free of such element. With the interface surfaces (24,28) disposed in contact, energy is generated at the interface surfaces (24,28) in a combination of an amount and for a first time selected to be sufficient to heat the interface surfaces (24,28) to a fusion welding temperature. However, the first time is less than a second time that enables formation at the fusion welding temperature of the continuous layer of the brittle intermetallic compound at the interface surfaces (24,28). A welded article is provided with a fusion weld free of such continuous layer of the brittle intermetallic compound.