Method of sintering pin-type electrodes or electrode shafts made of metallic material into a ceramic measuring tube for magneto-inductive flow meters

摘要

In order to produce a more leak-proof electrode lead-through in sintering rod-type electrodes or electrode shafts made of metallic material into a ceramic measuring tube for magneto-inductive flow meters, a rod-type electrode support composed of ceramic raw material is prefabricated and the electrode or the electrode shaft is introduced into it in a leaktight manner. Radial bores, into which the prefabricated electrode supports are inserted in the unfired or pre-fired state, are made in the measuring tube moulded from the same raw material. In the subsequent heat treatment, the electrodes or electrode shafts are sintered into the ceramic material of the electrode support in a leakproof manner and the electrode support itself is sintered with the ceramic material of the measuring tube in a leakproof manner.