METHOD OF MANUFACTURING PLATINITE WIRE

摘要

FIELD: metallurgy. ^ SUBSTANCE: invention relates to method of manufacturing the platinite wire and can be used in electrovacuum and semiconductors. Method includes composition preshaping made of ferro-nickel core and copper envelope, blank heating up to the temperature 850-920C with following plastic deformation up to defined wire finite size. After the plastic deformation wire surface is cleared and treated by surface-active agent, in the capacity of which it is used 0.25% water solution of boric acid. Then wire is reheated till the temperature 900-950C in pusher-type furnace, in restricted space of which it is formed medium with partial pressure of the oxygen no more than 10 mm of mercury. Then heated wire is oxidised in the atmosphere and sequentially cooled in steam-air and vapour-water mediums. Additionally time of wire oxidation in the atmosphere is regulated depending on standardised thickness and content of wire oxide layer. ^ EFFECT: improvement of wire ensured by formation on its surface cuprous layer with regulated thickness and content. ^ 1 tbl