FIELD: engine devices and pumps.
SUBSTANCE: gap should be as narrow as possible in order to provide good pump efficiency which can be realised only with a thin sidewall of the cup. In this case, the cup must have a significantly high strength, in particular, to withstand the pressure differences in the pump, and at the same time it can be produced in a simple manner by a given geometry and has a high stability of a shape. It is proposed to make the separation cup (1) with the side wall (3) which is at least partially composed of material containing a nickel component. This material is a nickel-chromium alloy which contains at least 50 weight percent of nickel and from 17 to 21 weight percent of chromium, and perform hardening the side wall (3) by heat treatment.
EFFECT: possibility to create the separation cup that is highly resistant to corrosion or high temperatures.
11 cl, 3 dwg
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