最新刊期
卷 28 ， 期 3 ， 2007
- 摘要：The temperature distribution curves at core, 1/2 radius and surface of the Φ35 mm round bar of 20CrMnTiH steel have been got by finite element simulating and situ temperature measuring to finishing rolled round steel bar during controlled cooling. Analysis results indicated that the temperature at surface of finished rolled round bar quickly dropped during water cooling while the temperature at core of steel decreased slowly ； the maximum temperature difference between the surface and the core of round bar was about 115 ℃ during water cooling ； and after water cooling the temperature of surface and core of round steel tended towards equality during air cooling. To adopt quick water cooling and combined air cooling process is available to inhibit austenite grain growth and obtain fine and dispersed structure of finished rolled 20CrMnTiH round steel products.关键词：20CrMnTiH Steel;Round Bar;Controlled Cooling;Temperature Field;Finite Element Analysis2|0|0更新时间：2026-01-21
- 摘要：Based on materials balance model and heat balance model and combined with relative process parameters, the calculated models for process energy consumption of scrap-arc fumace steelmaking-concasting-continuous rolling(scrap- EAF)flow sheet and hot metal +scrap-arc fumace-concasting-continuous rolling(metal+ scrap-EAF)flow sheet have been established and the effect of several key parameters on process energy consumption is analyzed. Results showed that compared with scrap-EAF flow sheet the process energy consumption of 33% metal+ scrap-EAF increased by 43.72 kgce/tstselbut its total energy consumption of flow sheet increased by 1/3.关键词：Scrap-EAF Flow Sheet;Metal+Scrap-EAF Flow Sheet;Process Energy Consumption;Model2|0|0更新时间：2026-01-21
- 摘要：Flow field of molten steel in 230 mm x 2 000 mm concasting slab mould has been simulated by using commercial software Phoenics combined with water model test. The effect of process parameters such as effect of submerged nozzle bottom structure, immersion depth and outlet angle on wave amplitude of fluid surface and effect of flow strand on impetus at mould narrow side have been studied and verified by water model test. Results showed that available submerged nozzle structure and process parameters are concave bottom structure, immersion depth 120 mm and outlet angle 15°.关键词：Wide Slab Concasting;Mould;Submerged Nozzle;Numerical Simulation2|0|0更新时间：2026-01-21
- 摘要：The effect of hot rolled plate air cooling(800~850℃ to750℃)+ water cooling(750 ℃ to 300～180 ℃)two stage cooling mode and water cooling(782℃ to760℃)+ air cooling(760℃ to713 ℃)+ water cooling (713 ℃ to 414 ℃)three stage cooling mode on structure and mechanical properties of dual steel 0.08C,1.02Mn, 0.22Si,0.02Nb,0.01Ti has been studied. Results showed that 5.5 μm ferite + dispersed lath martensite structure could be got by two stage cooling mode,and yield strength of steel was 345～365 MPa,tensile strength 565～575 MPa,yield strength-tensile strength ratio 0.60~0.65 which were better than that by three stage cooling mode.关键词：Nb-Ti Microalloying;Hot Rolling Dual Phase Steel;Control Cooling;Structure;Mechanical Property3|0|0更新时间：2026-01-21
- 摘要：The flow field characteristics and open phenomena of slag layer in bath of 150 t CAS ladle refining process have been simulated by 1 ： 4 water modelling device to get optimum blowing location and study effect of blowing parameters on bath mixing time. Results showed that the more the flow rate of injection, the bottom blowing rate and depth of lance outlet with shallow immersion of snorkel, the less the mixing time ； and the nearer the distance between bottom blowing location and ladle center, the poor the mixing effect. It is indicated by analysis that with 150 t CAS ladle installed powder injection device, the optimum bottom blowing location is at the place from ladle center 0. 35R (radius of ladle bottom).关键词：150 t CAS Process;Powder Injection Refining;Water Modelling;Flow Field;Mixing Time2|0|0更新时间：2026-01-21
- 摘要：The effect of 0~0.49W,0.01~0. 13Mo,0.01~0.47Nb on fire resistant steel 0.03C,0.99～1.01Mn, 0.005～0.028Ti for building has studied by 600 ℃ high temperature stress-rupture test and TEM. Test results showed that there were no-rupture for the fire-resistant steels containing compound addition 0.05%~0. 13%Mo-0.47% Nb with stress 230 MPa at 600 ℃ for5 h which meet the design requirement for fire-resistant steel, and the fireresistant properties of fire- resistant steel singly added Mo,W could not satisfy the design requirement.关键词：耐火建筑钢;W、Mo、Nb;高温持久性能6|0|0更新时间：2026-01-21
- 摘要：The structure and mechanical properties of 960～1020 ℃ solid solution treated + 720 ℃ 8 h furnace cooling to 620 ℃8 h air cooling double aging modified 718 alloy have been studied by X- ray diffraction(XRD)and scanning electron microscope(SEM).Results showed that with increasing solid solution temperature the ambient and 350 ℃ strength of alloy decreased,while plasticity and toughness increased; with increasing solid solution temperature, the amount of strengthening phase η in alloy decreased and disappeared at 1000 ℃,and the amount of strengthening phases γ'+γ" increased until 1000 ℃ then decreased. After solid solution + double aging,the size of most of γ' was 10~18 nm.关键词：Modified Inconel 718 Alloy;Solid Solution Temperature;Structure;Properties3|0|0更新时间：2026-01-21
- 摘要：The process of thin slab produced by FTSR(Flexible Thin Slab Rolling)process has been simulated by Gleeble-3500 thermal simulation machine,and the high temperature plasticities of slab of steel SS330(0.06%C)and steel SS400(0.20%C)600～1350 ℃ were tested,Results showed that the high temperature plasticity of steel SS400 at 700~ 900 ℃ was high than that of steel SS330;the high temperature plasticity decreasing of steel SS400 due to segregation and accumulation of sulphide and oxide at boundary of columnar crystal caused inner cross crack formation in slab. With con trolling sulphur content in steel decreasing to 0.010% from 0.015%,total oxygen content to 30×10-6from 45×10-6superheating degree of molten steel to 20~35℃ from 30~50℃,Mn/S in steel ≥60 and modifying slab casting speed to 3.0~4.5 m/min from original 2.5~6.0 m/min with reasonably controlling secondary cooling water amount, the thin slab inner cross crack was avoided effectively.关键词：FTSR Process;Steel SS400;Thin Slab;Inner Cross Crack;Forming Mechanism2|0|0更新时间：2026-01-21
- 摘要：The continuous cooling transformation(CCT)curves of low carbon steel Q235(0. 15C,0.005B)with 1050℃30% deformation, holding 10,40,90s and cooling to 1000℃30% deformation then cooling with 5℃/s to 880℃ and cooling with1,5,15 and 25℃/s have been measured using dilatometry by Thermecmastor-Z thermal simulation machine. With prolonging holding time at intermediate roll table, the CCT phase transformation beginning and finishing curves moved down to right and grain size of steel at ambient gradually enlarged.关键词：Steel Q235;Hot Continuous Rolling;Intermediate Roll Table;Holding;CCT Curves;Structure2|0|0更新时间：2026-01-21
- 摘要：The manufacture process of sheet of high silicon steel 0.02C,6.56Si,0. 14Mn,0.013P,0.004S, 0.02Al was melting by 25 kg vacuum induction furnace, forging breakdown,hot rolling to 1mm at 1050～850 ℃,warm rolling to 0.3 mm at 650℃,and cold rolling to 0.05 mm.The non-oriented silicon steel was got by vacuum annealing of the cold rolled sheet at 1200 ℃ for1.5 h. Compared with conventional oriented silicon steel,the iron loss of high silicon steel sheet decreased by 14.7% with0.07 Tand 20 kHz, by 19.7% with 30 kHzand by 28. 1% with 40 kHz,it is an excellent soft magnetic material. The tensile strength of the steel sheet cold rolled was up to 1480 MPa.关键词：High Silicon Steel;Cold Rolling;Magnetic Property2|0|0更新时间：2026-01-21
- 摘要：Martensite stainless steel 2Cr13(0. 19C,12.88Cr)was melted by a vacuum non-consumable arc fumace and 0~0. 18% Ce was added in casting ingot.The morphology and ingredient of inclusion in steel was observed and analyzed by using optical and scanning electron microscope and X-ray energy dispersive spectrometer.Results showed that with no-adding rare-earth element Ce the inclusion in steel was irregular MnS,Cr2S3and FeS compound inclusion with dimension 19.33 μm,with added 0. 14% Ce the inclusion in steel was compound rare-earth(RE)inclusion(inner RE sulphide and outside RE silicate)approximated ellipsoid with dimension 18.64 μm and with added 0. 16%～0. 18% Ce the inclu sion in steel was ellipsoid or spheroid RE silicate with dimension7.69~8.15 μm.关键词：Rare Earth Element;Stainless Steel 2Cr13;Modification of Inclusion2|0|0更新时间：2026-01-21
- 摘要：The structure and precipitates of 0.05C-0. 13Nb steel deformed by 50% at different temperature between 950~750 ℃ have been studied by Gleeble- 1500D thermal simulation machine,SEM and TEM. Results showed that with deforming temperature decreasing from 950 ℃ to750 ℃,the polygonal ferite content(volume percent)in 0.05C-0. 13Nb steel increased from 20% to 80% and grain size of polygonal ferrite decreased from 9 μm to4 μm; the deformed structure in steel consisted of polygonal ferite,grain bainite and 1~3 μm martensite/austenite island; and the amount of 1～10 nmprecipitates Nb (C,N) in steel increased with decreasing deformed temperature.关键词：Deforming Temperature;0.13Nb Steel;Structure;Precipitates2|0|0更新时间：2026-01-21
- 摘要：Ferrite-bainite(F+B)microalloying steel0.06C-1.08Si- 1.64Mn-0.30Mo-0.039Nb-0.01Ti has been developed; continuous cooling transformation(CCT)diagram of 50% deformed test steel at 900 ℃ and with cooling rate 0.5～40 ℃/s was obtained by Cleeble-1500 thermal simulator,and phase transformation structure of deformed austenite was analyzed. Results showed that the CCT diagram was composed of polygonal ferrite transformation region and bainite transformation region which were divided by metastable austenite region; as cooling rate was≤2 ℃/s,polygonal ferrite occurred in steel and as the cooling rate was ≥5 ℃/s,main structure in steel consisted of granular bainite and lath bainite.关键词：铁素体-贝氏体钢;热变形;冷却速度;组织演变;CCT 曲线2|0|0更新时间：2026-01-21
- 摘要：The changes of matrix structure and precipitates of new maraging stainless steel 0.007C- 13Cr-7Ni4Mo- 4Co-2W at solid solution temperature 800～1200 ℃ have been studied by using thermodynamic calculation soft ware Thermo-Calc,and the structure of solid solution of maraging stainless steel was investigated by transmission electron microscope (TEM),selected area diffraction pattern(SADP)and energy dispersive X-ray spectrometer(EDS).Results showed that the precipitate in maraging stainless steel at high temperature was Laves-Fe2Mo phase,and all precipitated phases were solved as solid solution temperature was more than 1050 ℃.关键词：Maraging Stainless Steel;Thermodynamic Calculation;Solid Solution Treatment;Laves-Fe2Mo Phase2|0|0更新时间：2026-01-21
- 摘要：A finite element thermal-conducting model of 80 t ladle has been established and stable state temperature field of the ladle with different conditions was calculated by means of software ANSYS to get distribution cloud pattern of temperature as each layer of ladle being up to heat saturation and outside surface temperature distribution curves of ladle wall. As well as the effect of materials and thickness of ladle wall,bottom and shielding agent on heat loss was analyzed. Results showed that the heat loss of ladle was mainly through wall of ladle and the thermal conductivity of adiabatic layer should less than 0.10 W/(m · ℃),and as shielding agent thickness was about 40 mm,the thermal conductivity should be controlled below 0.05W/(m · ℃).关键词：Finite Element Analysis;Ladle;Stable State;Temperature Field;Heat Loss2|0|0更新时间：2026-01-21
- 摘要：The effect of0～1.5% Nb on structure and mechanical properties of steel W3Mo2Cr4V(0.8~1. 1C,3.8 ~4. 1Cr,2.9~3.2W,1.8~2. 1Mo,1.0~1.3V)melted by 25 kg vacuum induction funace has been studied. Test results showed that with increasing Nb content the amount of niobium carbide in cast structure increased; quenching austenite grain was refined; as quenched at 1180 ℃,compared with HRC value of≤0. 1% Nb steel the HRC value of 1.2%~ 1.5%Nb steel increased by 6.0; the secondary hardening ability and red hardness of Nb steel were obviously increased.关键词：含Nb高速钢W3Mo2Cr4V; 二次硬化;力学性能2|0|0更新时间：2026-01-21
- 摘要：Application of lubrication technology for rolling process can not only decrease energy consumption and met- al loss in rolling process but also save water and decrease acid consumption.Effect of process rolling on bite in hot rolling and surface quality of cold rolling plate is presented. And application and effect of lubrication technology for hot rolling and cold rolling flow sheet production line in China,main ingredient and properties of typical lubricants for hot rolling,and categories and uses of lubricants for cold rolling plate are listed in this paper.关键词：Rolling;Lubrication;Energy Saving;Application2|0|0更新时间：2026-01-21
- 摘要：The amount of annual apparent consumption of stainless steel in China in 2005 was up to5220000 t, being 6 times the amount of annual apparent consumption in 1998,at the some time the amount of annual output of stainless steel in China increased to 3160000 t in 2005 from 220000 t in 1998 and the shortage was compensated mainly by input. According to incomplete statistic,up to the end of 2006,the production capacity of hot rolled stainless steel in China shall be up to10000000 t per year and that of cold rolled stainless steel shall be more than 5000000 t per year. Relative issues in development of stainless steel are discussed in this article and it is predicted that stainless steel requirement amount of stainless steel in China in 2010 shall be 8410000～10500000 t,in which 300 series austenite steels make up 50%~ 60%,400 series ferrite stainless steels make up 30%~35%,anothers including 200 series make up5%～10%.关键词：不锈钢;生产;消费;预测2|0|0更新时间：2026-01-21
- 摘要：The basicity of refining slag,feeding sulphur wire and deoxidation process for a 45 t LF on control of sulphur,oxide content and sulphide in steel 28MnCr5(0.25～0.30C,0.60～0.80Mn,0.020～0.035S,0.80～1.00Cr) have been tested. Results showed that as feeding sulphur wire with basicity of LF refining slag-2.8~5. 1,the yield of sulphur after VD was up to 80%～90% and oxide rating in steel≤1.5;and feeding suitable amount of CaSi wire was available to improve the morphology of sulphide in steel.关键词：45 t LF;Refining Process;Gear Steel 28MnCr5;Sulphide2|0|0更新时间：2026-01-21
- 摘要：The pressure difference between inlet and outlet of commercial size slot plug and velocity of gas at outlet have been measured in laboratory. It is obtained that the drag coefficient of plug is approximately equal to 44/Re, the flow condition is laminar flow, the drag coefficient is function of Reynolds number which is unconcerned to roughness factor, and the resistance loss on the way is in proportion to velocity of gas at outlet. Therefore the resistance loss could be calculated to determine the pressure of gas at inlet of plug. With application in industry as pressure difference of blowing argon is moderate, the drag coefficient of slot plug is approximately equal to 0. 07.关键词：透气砖;阻力系数;相对粗糙度;雷诺数4|0|0更新时间：2026-01-21
- 摘要：With application of a 50tEAF steelmaking terminal process control(TPC)at Special Steel Plant,Laiwu Steel, the end composition and temperature of steel and the yield of alloy are constant, and the overoxidation is eliminated or relieved to supply qualified molten steel for LF. With modelling operation in LF earlier, medium and later refining period, the narrow composition control(NCC)of molten steel is realized to get the heats frequency with C control deviation ± 0.01% being80%,Mn,Cr±0.02% and Si±0.05% being up to 91%,for gear steel,the heats frequency with S≤ 0.015%,P≤0.025% and oxygen content ≤20×10-6 being respectively up to 96%,97% and 95%,and for bearing steel with S≤0.005%,P≤0.020%,oxygen content≤12×10-6being respectively up to 95%,97% and 100%.关键词：50 t电弧炉;钢包精炼炉;冶炼终点控制;窄成分控制;齿轮钢;轴承钢5|0|0更新时间：2026-01-21
- 摘要：With using 60% hot metal + quality scrap charge,Consteel EAF eccentric bottom tapping operation,con- trolling tapping end [C] 0.035%～0.050% and tapping[P]≤0.012%,LF refining by low basicity slag,feeding silicon wire, soft blown argon for 15 min after LF refining and fully shielding auto control casting 150 mmx150 mm bilet in whole period, the average oxygen content in steel H11Mn2SiA(0.06~0.09C,0.82～1.00Si,1.45~1.70Mn)for welding wire was 20×10-6of which the Φ5.5 mm wire rods could be direct drawn to φ1.0 mm wire without by heat treatment and no-broken wire occurred.关键词：H11Mn2SiA焊线钢;Consteel EAF;LF氧含量5|0|0更新时间：2026-01-21
- 摘要：Φ160 mm 0Cr17Ni4Cu4Nb stainless steel bar products are produced at Special Steel Works,Benxi Steel by 3t ESR ingot-800 primary mill blooming 190 mm×190 mm billet - four stand 650 tandem mill rolling process to replace original 3t ESR ingot -forging process.Practice indicated that production effciency,yield and surface quality of products produced by rolling process were better than that by forging process,the go2(Rpo.2)of中160 mm OCr17Ni4Cu4Nb stainiess steel rolled bar was 890~955 MPa, σb(Rm) 960~1020 MPa,δ5(A)16%～18%,Ψ(Z)61%～65%,δ - Fe≤ 5% all to meet the requirement of standard CB8732Ⅱ .关键词：φ160 mm棒材;0Cr17Ni4Cu4Nb沉淀硬化不锈钢;半连续轧制;δ-铁素体5|0|0更新时间：2026-01-21
- 摘要：The φ140～170 mm bars of steel 37CrMnMo(0.35～0.38C,0.85～1.00Mn,0.90～1.20Cr,0.28~ 0.33Mo,≤0.015P,≤0.008S)for coupling sleeve of petroleum drill stem are produced by 50t EBT arc furnace-LF (VD)-Al and Ca-Si wire feeding-3.16 t ingot casting-800/650×4 mills rolling flow sheet at Benxi steel. Analyais and examination results showed that hydrogen content in steel products was (0.5～1)×10-6oxygen content(8～20)×10-6nitrogen content(55～90)×10-6inclusion rating 0~2, J25hardenability HRC value 42~51, transversal impact energy at - 10℃ 56~218J, longitudinal impact energy at - 10℃ 76~233 J and the strength and plasticity of products all met the requirement of standard.关键词：37CrMnMo钢;LF(VD); 喂丝;力学性能2|0|0更新时间：2026-01-21
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