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首页> 外国专利> METHOD OF FABRICATION OF INTERNAL SHELL OF NOZZLE OF COMBUSTION CHAMBER OF LIQUID-PROPELLANT ROCKET ENGINE (LPRE)

METHOD OF FABRICATION OF INTERNAL SHELL OF NOZZLE OF COMBUSTION CHAMBER OF LIQUID-PROPELLANT ROCKET ENGINE (LPRE)

机译：液体火箭发动机（LPRE）燃烧室喷嘴内壳的制造方法

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FIELD: engines and pumps.;SUBSTANCE: method comprises rotational squeezing of the shell in several transitions. The upper part from the small diameter of the shell is fabricated of the material intended for welding to the neighbouring nozzle unit. Before rotational squeezing of the shell in flat work piece the hole is cut out along the diameter of connection of two materials. Then the flat work piece from another material with the thickness, same as that of the main work piece is inserted into a hole. Two materials are welded by a circular weld. The welding joint is cleaned and inspected for its quality, and then the rotational squeezing of welded work piece is performed and the bimetallic internal shell from the side of smaller diameter with the zone of transition from one material to another is obtained.;EFFECT: fabrication of bimetallic internal shell with minimum deformation and without backing runs, exception of defects of welding in the zone of transition from one material to another due to hardening of welding joint at expansion, improvement of quality and reliability of LPRE combustion chamber nozzle shell.;1 dwg
机译：领域：发动机和泵。实质：该方法包括在多个过渡过程中旋转挤压壳体。从壳体的小直径开始的上部由用于焊接到相邻喷嘴单元的材料制成。在将壳体旋转挤压成扁平工件之前，沿两种材料的连接直径切出孔。然后将另一种厚度与主体相同的材料制成的扁平工件插入孔中。两种材料通过圆形焊缝焊接。清洗并检查焊接接头的质量，然后对焊接工件进行旋转挤压，并从直径较小的一侧获得双金属内壳，并从一种材料过渡到另一种材料。双金属内壳的变形最小且没有回程，由于膨胀时焊接接头的硬化，从一种材料过渡到另一种材料的过渡区域中的焊接缺陷，LPRE燃烧室喷嘴壳的质量和可靠性得到改善。; 1 dwg

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