冷镦钢SWRCH15A的开发及生产工艺优化

SWRCH15A430080SWRCH15ASWRCH15ATG142A1001-1447200604-0030-06DevelopmentofcoldheadingsteelSWRCH15AandproductiontechnologyoptimizationSHUAIXi-yuanTechnologyCenterofWuhanIronandSteelCorp.Wuhan430080ChinaAbstractColdheadingsteelSWRCH15AisaperitecticsteeldevelopedbyWISCOinrecentyears.Bymeansofanalyzingproductionprocessesandproductquantityoffirstbatchexperimentalsteelkeytechnologicalprocedureandparametersaredetermined.ThankstotheoptimizationofsteelmakingandcontinuouscastingprocessesthequalityofSWRCH15Awirehasbeenimprovedtoagreatextent.KeywordscoldheadingsteelSWRCH15Asurfacecrackcoldheadingpropertyproductiontechnologyoptimization.1965-.SWRCH15A→→→→→→→1100t100t1.1→→→→→→1.2SWRCH15AwC0.13%～0.18%wSi0.10%wMn0.30%～0.60%wP0.030%wS0.035%wAlt0.02%1.31200mm×200mm23℃1.4m/min1wB%CSiMnPSAls0.110.080.480.0080.0110.068%20320068344ResearchonIron&SteelAug.2006Vol.34No.42/%/%1/21/3/%/87065100+9～9.51.41.4.112～443234143243501.4.21wC0.1%～0.15%5wC0.1%～0.15%34350443505wCwC0.12%6AlN71wC0.12%wC134SWRCH15A0.15%～0.17%2wAls0.04%wCwAls6wC7wAlwN1.4.3881SWRCH15AwC0.15%～0.17%wSi0.06%wMn0.30%～0.60%wP0.020%wS0.020%wAls0.02%～0.04%231.2～1.4m/min4900℃700℃71.51.5.11950～1040℃2950～1020℃3920～960℃1.5.2CCT80%+2℃/s1.3℃/s1880～900℃20.2～0.4m/s1～2111.631/21/3100%3wB%CSiMnPSAls0.160.040.430.0110.0080.0292.6.114523344SWRCH15A02104307609110000903205507308408910411950420470050360770550030520490461190330350740130520940930070226//mm/mm/mm//%1/220204020.04106701/320204013.313765458%95%6～7671/270%1/365%1/2100%1/3100%334SWRCH15A910891091089+900.5～1.5580%+91.0%7//mm/mm/mm//%1/2626.5136.51448100%1/3626.5134.31052100%93220010352008/µm320504-43+9.5A0.5D0.5D10-91+9A0.5B10-100+9.5A0.5B10-32+9A0.5B1.50-89+9.5A0.5B10-104+9.5A1D10-119+9A1B109003+9.510.5B0.5047+9.510.5052+9005+8.59.5055+910.5093+910.56.543349007+8.5D0.5013+910049+9.5D1.5022+11052+9D1033+9.58.511035+10.5D1.5077+10.59.5074+10.59.5036+8.5～10.5119+910042+10.5094+9.510.5046+9D1010060D1.5052D1.5049D1.5106B1.5046D1.5068B1.5003D1.5007D1.5035D1.5050B12SWRCH15A1SWRCH15AwC0.15%～0.17%wSi0.06%wMn0.30%～0.60%wP0.020%wS0.020%wAls0.02%～0.04%2①②1.2～1.4m/min③900℃700℃3CCT2℃/s1.3℃/sФ6.5mm4SWRCH15A1.M..1994.2.M..2004.3.M..1979.4.M..1995.5.M..1992.2005-11-01534SWRCH15A