Tube with complex shape made by electroforming - and suitable for mfg. rocket thrust nozzles
Номер патента: DE2706989A1
Опубликовано: 24-08-1978
Автор(ы): Horst-Lothar Ing Grad Erfurt
Принадлежит: MAN Maschinenfabrik Augsburg Nuernberg AG
Опубликовано: 24-08-1978
Автор(ы): Horst-Lothar Ing Grad Erfurt
Принадлежит: MAN Maschinenfabrik Augsburg Nuernberg AG
Реферат: Tubes are made, esp. with a changing cross-section and/or an undulating or bent shape, e.g. to make a tunnel consisting of a rocket combustion chamber followed by a thrust nozzle contg. a constriction. A core is made of metal, or of a nonmetallic material with an electrically conducting surface layer; and the tube is made by electroforming a metal onto core, or deposition of metal by electrochemical means; core is then removed. Core is pref. made by casting a low m.pt. alloy, esp. Cerrobend (RTM). Several cores are pref. mounted on a jig, esp. a shaft fitted with disks between which the cores are located; and the jig is immersed in the electro(less) forming bath. The cores are then melted out of the tubes. An inexpensive method of mfg. tubes with complex shape.
Mat and gypsum panels suitable for wet or damp zones
Номер патента: RU2689751C2. Автор: Марк БЕРЛИОЗ,Самюэль МЕРЛЕ,Клод ЛЕКЛЕРК,Эмманюэль ФЕНО. Владелец: Альстром-Мункше Ойй. Дата публикации: 2019-05-28.