发明名称 PROCEDIMENTO DI FABBRICAZIONE DI LAMINATI IN ACCIAIO PRESENTANTI BUONA SALDABILITA' LIMITE ELEVATO DI ELASTICITA' E BUONA RESILIENZA A TEMPERATURE MOLTO BASSE.
摘要 To produce a rolled steel product such as rolled steel bars for reinforcing concrete, steel containing carbon, manganese, silicon, aluminium and niobium is rolled in at least three passes. The total reduction during the three passes or the last three passes as the case may be is at least 20%. The temperature before, during and after rolling is regulated such that the elasticity limit and resilience at -120 DEG C of the rolled product (as calculated from the expressions: LE=1035+510C+192Mn+2270Nb-0.21T1-0.40T2-0.48T3-3.51D KCV=2202-2066C+23.20Mn-2064Nb-0.77T1-1.24T2-0.23T3-1.98D wherein C is the carbon content of the steel, Mn is the manganese content of the steel, Nb is the niobium content, if any, of the steel, T1 is the temperature of the steel before rolling, T2 is the temperature of the steel during rolling, T3 is the temperature of the steel after rolling, D is the diameter of the steel after rolling, LE is the elasticity limit, and KCV is the resilience at -120 DEG C) attain the desired high values.
申请公布号 IT8026926(D0) 申请公布日期 1980.12.23
申请号 IT19800026926 申请日期 1980.12.23
申请人 ARBED S.A. 发明人 ARTHUR SCHUMMER;JEAN DE LA HAMETTE;GUY LESSEL;JEAN PAUL BECK;ARMAND FRANTZ
分类号 B21B1/08;B21B3/00;B21B3/02 主分类号 B21B1/08
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