Can For Magnetically Coupled Pumps and Production Process

摘要

Magnetically coupled pumps use cans which have a side wall arranged in a gap between a driver and a rotor of the pump. With a view to good efficiency of the pump, the gap should be as narrow as possible, which can only be achieved with a side wall of a thin wall thickness. In this case, the can must be of a sufficiently great strength, in particular to withstand the differences in pressure in the pump. At the same time, it must be possible for the can to be shaped into a desired geometry in a simple way and to have a high degree of dimensional stability, even under high pump pressures. It is proposed to make a can (1) with a side wall (3) that consists at least partially of a material with a nickel component, wherein the material is a nickel-chromium alloy comprising at least 50 percent by weight of nickel and 17 to 21 percent by weight of chromium, and to harden the side wall (3) by a heat treatment. This allows a can (1) that is very resistant to corrosion and/or high temperatures to be provided in a simple way.

主权项

1. A can (1) comprising:
a flange part (4); a bottom (2); a side wall (3) that can be arranged in a gap in the mounted status of the can, said side wall consisting at least partially of a material containing a nickel constituent, wherein the material is a nickel-chromium alloy which contains at least 50 percent by weight of nickel and 17 to 21 percent by weight of chromium.