method of producing various massive blanks of encapsulated pipe connections by virtue of powder moulding

Abstract

The invention concerns a method of producing various massive blanks of encapsulated pipe connections by pressure moulding metal powder material, such as an encapsulated manifold ( 1 ) on a base plate ( 2 ). In an open mould of steel plates are installed a planned network of both curved and straight pipes ( 4 ) both for fluids, via a series of control valves ( 3 ) to a control module for hydraulic couplings, and for through pipes ( 5 ) for couplings for hydraulic and electrical distribution. From holes in the mould walls pipe ends are extending, which are sealed to the holes in the mould plates. External plates entered on to pipe connectors and locked before the HIP process hold the geometry of the piping network. When the network of pipe and cable connections is established, the top plate is sealed to the mould. A flexible steel bellows is fastened to the top plate, and is used to fill the mould with casting powder and for replenishing to eliminate volumetric shrinkage in the mould during the HIP process, whereafter the mould is removed, and the cast blank is machined before external pipe network and cable connections are connected.

1 . A method of producing various massive blanks of encapsulated pipe connections by Hot Isostatic Pressing—HIP of metallic powder material, to a capsulated manifold on a base plate, characterised in that
 in an open mould of steel plates are installed a planned network of both curved and straight pipes ( 4 ) both for fluids, such as hydraulic liquid, via a series of control valves ( 3 ) to a control module for hydraulic couplings, and for through pipes for electrical couplings, being connected t hydraulic and electrical distribution,   from holes in the mould walls ends of pipes and through pipes extend, the ends being sealed to the holes in the mould plates,   to keep the geometry between the pipes these are held in position by means of external plates entered on to the pipe ends and locked before the HIP process,   when the planned network of pipe and cable connections is established, the top plate is sealed to the mould, and   to the top plate is fastened a flexible steel bellows used to fill and to replenish the mould with casting powder to eliminate volumetric shrinkage in the mould during the HIP process, whereafter the mould is removed and the cast blank is machined before connecting external pipe network and cable connections.