Institutul De Cercetare Si Proiectare Pentru Produse Plate Si Acoperiri Metalice
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Priority to RO107238ApriorityCriticalpatent/RO85159B1/en
Publication of RO85159A3publicationCriticalpatent/RO85159A3/en
Publication of RO85159B1publicationCriticalpatent/RO85159B1/en
Procedeul de obtinere cu limita de curgere ridicata, conform inventiei, prevede elaborarea unei sarje microaliate cu titan, turnare, deformare plastica la cald a lingourilor si tratarea termica a laminatelor aduse la grosimea finala conform inventiei principale cu descrierea nr. 74391. în scopul cresterii limitei de curgere cu circa 15%, se supune tabla de otel adusa la grosimea finala la o dubla normalizare, cuprinzînd o încalzire la 1150...1200 degree C mentinerea timp de 3...4min/mm, racire în aer linistit si apoi o reîncalzire la 890...920 degree C cu mentinere de 1...1,5min/mm urmata de racire în aer linistit.The high flow yield process according to the invention provides for the development of a micronized titanium batch, casting, hot plastic deformation of the ingots, and thermal treatment of the rolls produced to the final thickness according to the main invention with specification no. 74391. In order to increase the flow limit by about 15%, the steel sheet is subjected to the final thickness at a double normalization, comprising a heating at 1150 ... 1200 ° C, maintaining for 3 ... 4 min / mm, cooling in quiet air and then reheating at 890 ... 920 degrees C with maintenance of 1 ... 1,5 min / mm followed by cool air cooling.
RO107238A1982-04-121982-04-12Process for obtaining a high yield stress steel
RO85159B1
(en)