Process for producing a drawn wire, in particular a wire for reinforcing
tires, having a diameter of less than 0.3 mm by drawing a base wire rod
having a diameter of greater than 5 mm or a predrawn base wire made of
steel with the following composition by weight:
carbon.ltoreq.40.times.10.sup.-3 %
nitrogen.ltoreq.40.times.10.sup.-3 %,
the carbon and nitrogen satisfying the relationship
C+N.ltoreq.50.times.10.sup.-3 %,
0.2%.ltoreq.silicon.ltoreq.1.0%,
0.2%.ltoreq.manganese.ltoreq.5%,
9%.ltoreq.nickel.ltoreq.12%,
15%.ltoreq.chromium.ltoreq.20%,
1.5%.ltoreq.copper.ltoreq.4%,
sulfur.ltoreq.10.times.10.sup.-3 %,
phosphorus<0.050%,
40.times.10.sup.-4 %.ltoreq.total oxygen.ltoreq.120.times.10.sup.-4 %,
0.1.times.10.sup.-4 %.ltoreq.aluminum.ltoreq.20.times.10.sup.-4 %,
magnesium.ltoreq.5.times.10.sup.-4 %,
0.1.times.10.sup.-4 %.ltoreq.calcium.ltoreq.5.times.10.sup.-4 %,
titanium.ltoreq.50.times.10.sup.-4 %,
impurities inherent in the manufacture,
in which steel the inclusions of oxides have, in the form of a glassy
mixture, the following proportions by weight:
30%.ltoreq.SiO.sub.2.ltoreq.65%,
5%.ltoreq.MnO.ltoreq.40%,
1%.ltoreq.CaO.ltoreq.30%,
0%.ltoreq.MgO.ltoreq.10%,
3%.ltoreq.Al.sub.2 O.sub.3.ltoreq.25%,
0%.ltoreq.Cr.sub.2 O.sub.3.ltoreq.10%.
Het proces om een getrokken draad, in het bijzonder een draad te produceren voor het versterken van banden, die een diameter van minder hebben dan 0,3 mm door een staaf die van de basisdraad te trekken een diameter van groter heeft dan 5 mm of een predrawn baseert draad die van staal met de volgende samenstelling in gewicht wordt gemaakt: carbon.ltoreq.40.times.10.sup.3% nitrogen.ltoreq.40.times.10.sup.-3 %, de koolstof en de stikstof die verhouding c+N.ltoreq.50.times.10.sup.-3 %, 0.2%.ltoreq.silicon.ltoreq.1.0%, 0.2%.ltoreq.manganese.ltoreq.5%, 9%.ltoreq.nickel.ltoreq.12%, 15%.ltoreq.chromium.ltoreq.20%, 1.5%.ltoreq.copper.ltoreq.4%, sulfur.ltoreq.10.times.10.sup.-3 %, tevredenstellen fosfor