Korkeahiilisen valssilangan valmistus

摘要

The invention relates to a billets and blooms intended for wire rod rolling and to wire rod rolled therefrom, which is composed of steel having a high carbon content, which is aluminium sealed and suitable for continuous casting, and which contains the following percentages by weight: C = 0.5 - 1.0 percent; Si = 0.10 - 0.60 percent; Mn = 0.3 - 1.0 percent; Cr = 0.0 - 0.4 percent; Al = 0.010 - 0.070 percent; whilst the remainder is largely composed of Fe. The wire rod furthermore contains micro- alloy constituent proportions of Ti = 0.01 - 0.10 percent by weight and Ca = 0.001 - 0.005 percent by weight, and has a microstructure largely composed of close-grained fine pearlite. <IMAGE>