Method for manufacturing the armature housing of a slide valve
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
Nov 28, 1997
filing date -
Nov 29, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Using the described method it is possible to manufacture an armature housing of a slide valve integrally including the connection sockets. The method makes use of two forging processes, which are both carried out in the same forging mould (1): The first forging process is designed as a forward flow pressing process, in which the blank (3) is forced into the lower region of the mould cavity (2) with the aid of a first mandrel (4) and thereby also fills the cylindrical recesses (2b) of the mould cavity (2), which correspond to the subsequent connection sockets. The second forging process is designed as a return flow pressing process, in which, by means of a second mandrel (5) having corresponding dimensions, the entire interior (12) of the subsequent armature housing is formed with the exception of the supply and outflow ducts which penetrate the connection sockets. The guide elements, which are used for guiding the sealing member of the slide valve during the movement between the open and closed positions, are preferably simultaneously formed by the second mandrel (5) during the return flow pressing process.
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