Tellurium-containing medium-carbon high-sulfur free-cutting steel, wire rod and production method of wire rod
A technology of free cutting steel and production method, which is applied to the production of wire rods and wire rods, and the field of tellurium-containing medium-carbon and high-sulfur free-cutting steels can solve problems such as easy cracking, improve microstructure, and improve elongation after fracture. , the effect of improving plasticity
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[0106] A production method of tellurium-containing medium-carbon and high-sulfur free-cutting steel wire rod, comprising converter smelting, LF furnace refining, RH furnace refining, tellurium modification treatment, continuous casting, billet heating, controlled rolling, segmental cooling after rolling, Trim head and tail to produce tellurium-containing medium-carbon and high-sulfur free-cutting steel wire rod. See Table 1 for composition.
[0107] Table 1 Chemical composition of tellurium-containing medium-carbon and high-sulfur free-cutting steel wire rods in different heats (mass percentage%)
[0108] Stoves C Si mn P S Al Pb Te Ca Mn / Te Te / S 1 0.42 0.15 1.33 0.011 0.32 0.005 0.002 0.012 0.0003 110 0.037 2 0.42 0.21 1.50 0.008 0.30 0.004 0.001 0.018 0.0004 83 0.06 3 0.44 0.25 1.55 0.01 0.33 0.007 0.002 0.024 0.0003 64 0.072 4 0.43 0.3 1.58 0.012 0.27 0.006 0.001 0.028 0.0005 56 0.10 ...
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