Abstract:
A method for improving a fluid dynamic profile and fouling properties of a marine vessel with a welding seam which forms a cap protruding above a surface being under the waterline of a vessel. The method comprising amending the welding seam by applying a fairing to the underwater surface, e.g. by use of filler. A vessel with a fairing, and a coating system for a vessel and including a fairing.
Abstract:
A method for welding anchor supports for refractory linings of a metal structure of an industrial plant comprises the steps of making a plurality of holes (f) in a residual refractory lining (cu) until the metal structure (s) is uncovered, each hole (f) having a diameter greater than that of a ceramic ferrule (8) for stud-welding, cleaning the bottom of the holes (f), arc welding the anchor (Z) on the metal structure (s) of the industrial plant through each hole (f) made in the residual refractory liner (cu) so that the anchor protrudes from the residual refractory lining (cu), and overlapping new refractory concrete (cn) in order to restore the protective lining for the metal structure (s) of the industrial plant. A device for welding anchor supports for refractory linings of a metal structure of an industrial plant, consisting of a welding gun (1) for arc stud-welding, comprising a body (2) that holds a chuck member (9) for an anchor or clamp (Z) and is connected to a handle (3), a perforated support plate (4) mounted on the body (2) by means of stems (5), a tubular extension (6) mounted on the perforated support plate and supporting a ceramic ferrule (8) by a nut ring (7), wherein the tubular extension (6) and the nut ring (7) have a diameter smaller than that of the ceramic ferrule (8).
Abstract:
A method for welding anchor supports for refractory linings of a metal structure of an industrial plant comprises the steps of making a plurality of holes (f) in a residual refractory lining (cu) until the metal structure (s) is uncovered, each hole (f ) having a diameter greater than that of a ceramic ferrule (8) for stud-welding, cleaning the bottom of the holes (f), arc welding the anchor (Z) on the metal structure (s) of the industrial plant through each hole (f) made in the residual refractory liner (cu) so that the anchor protrudes from the residual refractory lining (cu), and overlapping new refractory concrete (cn) in order to restore the protective lining for the metal structure (s) of the industrial plant. A stud-welding device is also described for practicing the method.
Abstract:
본 발명은 멤브레인형 액화가스 화물창의 주름 멤브레인 시트 자동 용접시스템, 멤브레인형 액화가스 화물창의 주름 멤브레인 시트 자동 용접장치 가이드 고정구조, 및 멤브레인형 액화가스 화물창의 주름 멤브레인 시트 자동 용접장치 가이드 구조에 관한 것으로, 주름 멤브레인 시트 용접 시, 주름 멤브레인 시트가 설치되는 단열패널의 상면에 부착되는 길이방향 및 폭 방향 앵커 스트립의 교차 부분에, 고정용 홈을 갖는 교차 앵커 스트립을 설치하여, 그 고정용 홈을 활용하여 자동 용접장치를 지지하고 자동 용접장치의 이동을 가이드 하는 용접 가이드의 설치를 가능하게 함으로써, 주름 멤브레인 시트의 자동 용접을 안정적으로 수행할 수 있다.
Abstract:
Un procédé est destiné à souder une première pièce (P1), en acier et comprenant un bord périphérique (BP) délimité par des faces d'extrémité (FE1), interne (FI) et externe (FE2), sur une partie (PS) d'une seconde pièce (P2) en aluminium. Ce procédé comprend une première étape où l'on incline la partie (PS) par rapport à une direction horizontale et on plaque la face externe (FE2), non oxydé, contre la partie (PS), et une seconde étape où l'on génère sur la partie (PS), à une distance choisie au-dessus de la face d'extrémité (FE1), un bain de soudure (BS) à base d'aluminium avec une torche à transfert de métal froid, puis on fait descendre par gravité le bain de soudure (BS) jusqu'à ce qu'il recouvre intégralement la face d'extrémité (FE1) et une partie choisie (PC) de la face interne (FI), puis on laisse le bain de soudure (BS) se solidifier.