Abstract:
The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire includes a sheath and a core. Further, the core includes a carbon source and an agglomerate having a Group I or Group II compound, silicon dioxide, and titanium dioxide. Additionally, the carbon source and the agglomerate together comprise less than 10% of the core by weight.
Abstract:
The present invention relates to a process for forming the root of a turbine blade using the EDM method. EDM machining of the root is done in a manner that any re-cast layer left behind is less than 1 micron. After EDM machining the turbine blade is subjected to MPT to check for depth or presence of surface cracks. A liquid tracer coating is then applied to the root, which allows the ability of the next process to be verified as complete. The root is then subjected to glass beeding to remove any re-cast and insure the surface finish prior to shot peening is consistent and contains no scratch marks or machine marks. The root is then subjected to shot peening to reduce residual tensile stresses by imparting to the surface small indentations or dimples and produce a compressed surface which resists further surface cracks.
Abstract:
The invention concerns a welding electrode consisting of a core and a coating. The core wire consists of an austenitic stainless steel, which contains in weight %: 0.001-0.03 C, 0.01-0.3 Si, 0.5-2.5 Mn, 19-21 Cr, 9-12 Ni, 0.01-0.2 N. The coating contains in weight %: 6-10 CaCO3, 2-5 F, 10-30 SiO2, 4-10 Al2O3, 25-35 TiO2, 7-12 Fe, max 5 CrN, max 5 Ni, max 10 Cr, max 5 Mn, balance essentially only sodium- and potassium compounds existing as components and natural minerals; binding agents; and unavoidable impurities. The invention also relates to a welded article of an austenitic stainless steel, a new austenitic stainless steel and a welding wire made of such steel.
Abstract translation:本发明涉及由芯和涂层组成的焊接电极。 芯线由奥氏体不锈钢组成,其重量%:0.001-0.03℃,0.01-0.3Si,0.5-2.5Mn,19-21Cr,9-12Ni,0.01-0.2N。该涂层含有 重量%:6-10 CaCO 3,2-5 F,10-30 SiO 2,4-10 Al 2 O 3,25-35 TiO 2,7-12 Fe,最大5 CrN,最大5 Ni,最大10 Cr,最多5 Mn,余量 基本上只有钠和钾化合物作为成分和天然矿物存在; 粘合剂; 和不可避免的杂质。 本发明还涉及奥氏体不锈钢的焊接制品,新的奥氏体不锈钢和由这种钢制成的焊丝。
Abstract:
A flux (55) for superalloy laser welding and additive processing (20, 50), including constituents which decompose when heated in a laser induced plasma or to a melt temperature of the superalloy (42), creating one or more gases (46) that blanket the melt to protect it from air, while producing not more than 5 wt. % of slag relative to the weight of the flux. Embodiments may further include compounds providing one or more functions of surface cleaning, scavenging of impurities in the melt, and elemental additions to the superalloy.
Abstract:
본 발명은 해양구조물, 건축, 교량, 조선 등의 고장력강을 플럭스 코어드 아크 용접(FCAW) 함으로써 얻을 수 있는 플럭스 코어드 아크 용접이음부(Flux Cored Arc Welded Joint) 및 이를 제조하기 위한 플럭스 코어드 아크 용접 와이어에 관한 것이다.
Abstract:
Die Erfindung richtet sich auf die Verwertung eines bei der Herstellung von Titandioxid anfallenden titanhaltigen Nebenproduktes, insbesondere im Wege eines Verfahrens zur Herstellung eines Beschichtungsmaterials für Schweißelektroden oder zur Herstellung eines beim Elektroschweißen, insbesondere Unterpulverschweißen, einsetzbaren Schweißpulvers, Schweißpulverzusatzmittels oder Flussmitteladditivs. Um eine Lösung zu schaffen, die die Verwertung sowie die Verwendung des bei der Herstellung von Titandioxid anfallenden titanhaltigen Nebenprodukts in wirtschaftlich günstiger Weise ermöglicht, schlägt die Erfindung vor, dass das titanhaltige Nebenprodukt bei der Herstellung des Beschichtungsmaterials oder bei der Herstellung des beim Elektroschweißen, insbesondere Unterpulverschweißen, einsetzbaren Schweißpulvers, Schweißpulverzusatzmittels oder Flussmitteladditivs dem Schweißpulver und/oder dem Schweißpulverzusatzmittel und/oder dem Flussmitteladditiv ein im Verlauf eines Titandioxidherstellverfahrens, insbesondere Titandioxidpigmentherstellverfahrens, bei einem Produktionsschritt oder in einer Produktionsstufe als Nebenprodukt oder Abfallprodukt anfallendes titanhaltiges, insbesondere titandioxidhaltiges, Material zugeführt und/oder zugemischt und zu dem Schweißpulver und/oder dem Schweißpulverzusatzmittel und/oder dem Flussmitteladditiv verarbeitet wird.
Abstract:
Nanoparticle compositions for use as solder, and methods for joining two or more material surfaces using nanoparticle solder compositions are described. Due to their small size, nanoparticles of a particular material have a lower melting temperature than the same material in bulk, thereby providing a homogenous bond between two or more materials when the nanoparticle solder is solidified. A gas species, such as hydrogen, can be introduced to further lower the melting temperature of the nanoparticles. The nanoparticles can also be used to form films on low melting point, substrates, including flexible substrates. The nanoparticles for use in the present invention can comprise any material, including semiconductor materials, metals, or insulator materials, and are less than about 20 nm in diameter, although larger sizes can also be used.
Abstract:
The present invention provides a method and coating for improved weld penetration, reduced weld current, and/or reduced bead width during an electric arc welding process. The coating of the present invention comprises selected oxides of titanium and amorphous titanium sub oxide in a suitable carrier.