最新刊期
卷 28 ， 期 6 ， 2007
- 摘要：The strength and plasticity of (mm) 150 x 150, 180 x 220 and 220 x 300 concasting billet of gear steel 20CrMnTiH at 600 ~ 1 300 °C have been studied by Gleeble-1500 thermal simulation machine. Test results showed that the actual strength at fracture Skof three size of billet at 650 ~ 950 °C was very low, at 950 ~ 1 200 ℃ the Skincreased with increasing temperature, then the Skdecreased at temperature higher than 1 200 °C ； the second brittle zone of steel was at 950 ~ 700 ℃. It is available to prevent crack source evolving into longitudinal crack by increasing the shell thickness of billet out of mold and decreasing holding time at 950 ~ 700 °C zone.关键词：Gear Steel 20CrMnTiH;Concasting Billet;Longitudinal Crack;Mechanical Properties;Thermal Simulation2|0|0更新时间：2026-01-21
- 摘要：The effect of 0.01%~0.22%V on relax resistance,mechanical properties and precipitated phase of Si- Mn spring steels(0.34~0.53C,1.06~1.24Si,1. 17~1.36Mn)with 870～900℃ normalizing,900~920 ℃ quenching and 400~460 ℃ tempering has been studied by Bauschinger test and transmission electron microscope examination. Results showed that with increasing austenitizing temperature at 870~920 ℃,the strength of steel increased; with adding vanadium in steel the area of relax loop and relax resistance of steel increased; and the available vanadium content in steel was 0.05%~0. 10% which had obvious precipitates of second phase in steel and the second phase particle in 0.06%V steel was fine.关键词：Vanadium;Si-Mn Spring Steel;Mechanical Properties;Relax Resistance2|0|0更新时间：2026-01-21
- 摘要：The structure and properties of electroslag remelting steel Cr14Mo4(1.03C,14.36Cr,3.98Mo)Φ22 mm hot rolled products annealed at 750~950 ℃,quenched at 950～1200 ℃ and tempered at 450～550 ℃ have been studied. Results showed that HB hardness value of steel annealed at(890±20)℃ was 207~255;structure of steel quenched at 1100～1120 ℃ and tempered at 500~525℃ consisted of fine acicular tempered martensite,residual austenite and carbide with HRC hardness value 61 and fracture toughness KICvalue 31.5～32.1 MPa ·m1/2high temperature contact fatigue life L10of steel Cr14Mo4 at 200℃ was 1. 1×105and the steel Cr14Mo4 has higher wear resistance.关键词：不锈轴承钢Cr14Mo4;热处理;组织;机械性能;高温接触疲劳寿命2|0|0更新时间：2026-01-21
- 摘要：Based on dynamic finite element method, a finite element model of cooling water flow in cavity of water cooling carriage for Consteel EAF has been established to carried out the flow velocity analysis and thermal analysis on cooling water in water cooling carriage. Research results show that the dead space of water flow can obviously be improved by opening a small hole at joint place of each clapboard and wall ； the dead space of water flow may be eliminated by changing the right angle transition to round angle transition ； and the temperature of round tube wall from inside to outside decreases from 61. 91 ~83. 48 ℃ to 61. 18 ~67. 12 ℃ by improving the quality of cooling water without scale.关键词：Consteel EAF;Water Cooling Carriage;Flow Velocity Field;Temperature Field;FE Analysis2|0|0更新时间：2026-01-21
- 摘要：The second phase particles in simulated weld(H08C weld wire-0.06C,1.44Mn,0.24Mo,0.04Ti, 0.01V)and coarse grained heat affected zone(CGHAZ)of Ti-V-Nb microalloyed steel(0.08C,1.29Mn,0.02Ti, 0.04V,0.04Nb)have been studied by using carbon extraction replica technique.Results showed that size of most second phase particles in parent metal was ≤30 nm with average size 19.70 nm; there was a lot of residual carbo-nitride particles in CGHAZ of which the average size increased to42.78 nm,and the shape of residual particles changed from irregular morphology in parent metal to cubic in CGHAZ in which the Ti content obviously increased; and most of carbo-nitride particles in weld dissolved,the TiO formed in bath combined with other deoxidising and desulphurizing products to form large scale inclusions and the inclusions and second particles containing Nb,V didn't find out in weld.关键词：Ti-V-Nb Microalloying Steel;Second Phase Particles;Weld;CCHAZ2|0|0更新时间：2026-01-21
- 摘要：Phase transformation of 0. 13Nb microalloying low carbon steel with deformation in non-crystallization temperature zone(as deformation≥50%,crystallization occurred)and continuous cooling with cooling rate0.1～50 ℃/s has been studied by using thermecmastor-Z thermal simulation test machine and the effect of thermal deformation parameters on phase transformation structure was analyzed. Results indicated that with deformation in non-crystallization temperature zone,in continuous cooling with cooling rate larger than5℃/s,more than 90% of structure was granular bainite,and at same deformation temperature,with increasing deformation the amount of procutectoid ferite increased and the amount of bainite decreased.关键词：Low C Steel;Nb Microalloying;Thermal Deformation;Phase Transformation5|0|0更新时间：2026-01-21
- 摘要：The evolution of structure of 0. 78C-1. 03Cr eutectoid pearlitic steel Φ8 mm x 45 mm sample with two pass equal channel angular pressing at ambient temperature has been studied by scanning, transmission electron microscope and X- ray diffraction method. Results showed that after one pass equal channel angular pressing, the deformed eutectoid pearlitic structure consisted of cementite irregularly bent lamellae t sheared breaking lamellae and locally thinned lamellae. With pass number increasing the proportion of locally thinned lamellae and irregularly bent lamellae increased, and partial cementite dissolved.关键词：Eutectoid Pearlitic Steel;Equal Channel Angular Pressing;Cementite2|0|0更新时间：2026-01-21
- 摘要：The continuous cooling transformation(CCT)curves,structure and phase transformation of quality spring steel 60Si2CrVAT with different finishing rolling temperature and cooling rate have been examined and studied by Gleeble-1500 thermal mechanical simulator,optical microscope and transmission electron microsope. Results showed that as cooling rate was1 ℃/s,the pearlite content in spring steel 60Si2CrVAT was about 98%;with increasing cooling rate the ferite and pearlite content gradually decreased while bainite and martensite content increased; and as cooling rate was up to 9 ℃/g,the matrix was all martensite.With finishing temperature 850 ℃ and cooling rate 1 ℃/s,the sorbite content in spring steel 60Si2CrVAT was up to90% with excellent strength and toughness i.e. Rm1301 MPa,Rp0.2928 Mpa,A23.8% and Z38.6%.关键词：弹簧钢60Si2CrVAT;组织演变;CCT 曲线;控轧控冷5|0|0更新时间：2026-01-21
- 摘要：The single pass thermal compression test of 0.019C and 0.052C two kinds of ultra-low carbon bainite (ULCB)steel with deformation 5%~50%,strain rate 2s-1at 1100 ℃ has been carried out by Thermechmastor-Z thermal simulation machine.Results showed that as deformation was lower than 40% the deformation-recrystallization behavior of two kinds of ULCB steel was same that was to form crystal nucleus of recrystallization with 10% deformation,partially recrystallize with 20% deformation,and basically perform recrystallization with 40% deformation. With deformation more than 40%,the grain size of 0.052C ULCB steel was more fine and uniform than that of 0.019C ULCB steel.关键词：Ultra-Low Carbon Bainite Steel;Thermal Simulation;Stress-Strain;Dynamic Recrystallization2|0|0更新时间：2026-01-21
- 摘要：The parameters of heating,rolling and cooling of steel F45MnV steel(0.44C,1. 18Mn,0. 10V)during hot rolling have been simulated by thermal simulator Cleeble- 1500.It wag found by test that with heating temperature increasing from 950 ℃ to1100 ℃ the austenite grain size in steel increased from 25.7μm to 84.3 μm;with heating temperature at 1000～1050 ℃ the austenite grain size was64.0~62.8 μm,it is available to control quality and ensure stable properties of steel rolled at the temperature range; with cooling rate increasing from 0.25 ℃/s to2 ℃/8,the tensile strength of steel F45MnV rolled with deformation 70% and finish rolling at 900 ℃ increased from 815 MPa to 960 MPa.关键词：Non-Quenched and Tempered Steel F45MnV;Hot Rolling Parameter;Thermal Simulation2|0|0更新时间：2026-01-21
- 摘要：The effect of cleanliness and rolling process of two heats of 20R steel-0. 15C,0.008P,0.008S,0.06Mo and 0. 18C,0.009P,0.004S,0.01Mo on low temperature impact energy of steel has been rescarched by 200 kg vacuum induction furnace and 500 mm mill in laboratory.Results showed that the low temperature impact toughness of steel was obviously improved by decreasing S content and inclusion; with steel1180 ℃ heating,1020 ℃ beginning rolling and 800 ℃ finishing rolling, the longitudinal,cross impact energy at -40℃ of0.008% S steel by hot rolled air cooling and hot rolled + 880 ℃ normalizing were respectively 14.7J,10J and 13J,9J,and inclusion rating in steel was A- 1.5 and B- 1.5; the longitudinal,cross impact energy at -40℃ of 0.004% S steel by hot rolled air cooling were 180J,98 J,and inclusion rating in steel was D-0.5;The longitudinal and cross impact energy at -40℃ of0.004% S steel by hot rolled and control cooling(water cooling)increased respectively to 210 J and 146 J with improved bending structure.关键词：20R Steel;S Content;Inclusion;Structure;Low Temperature Impact Energy6|0|0更新时间：2026-01-21
- 摘要：The morphology and component of insulating coating of non-oriented silicon steel before and after stripping have been analyzed and studied by established adhesive model of thick coating,electron probe micro analyzer(EPMA)and glow discharge spectroscopy(CDS).Results showed that the adhesion mechanism of insulating coating with non-oriented silicon steel was physical,the main stripping form was interface stripping between substrate and coating which was accompanied coating's interlaminar stripping.Rimous crack caused by bending may be an important cause for stripping.关键词：Non-Oriented Silicon Steel;Insulating Coating;Stripping Mechanism2|0|0更新时间：2026-01-21
- 摘要：Main advances in 0.03～0.05C,2.80～3.40Si cold rolled grain-oriented electrical steels are presented including obvious improvement of magnetic properties by improving texture, decreasing thickness of sheet and using magnetic domain refining techniques; research on mechanism of secondary recrystallization texture selecting growth and Goss texture forming; and low temperature reheating technology for slab and compact flow sheet process etc.关键词：冷轧;取向电工钢;磁性能;生产技术;进展2|0|0更新时间：2026-01-21
- 摘要：The volume of melt chamber of vacuum induction degassing and pouring funace(VIDP) is less than that of conventional vacuum induction melting furnace(VIM)with same capacity to reduce vacuum pumping time and melting time. Small melt chamber is available to control pressure and temperature,recover volatile elements and precisely control alloy component. The longer launder is another important component of VIDP fumace which has refining function.Modular design and versatile assembly for VIDP funace can connect various casting equipment including normal ingot casting,electrode casting,or continuous casting.关键词：真空感应炉;VIM;VIDP2|0|0更新时间：2026-01-21
- 摘要：The high carbon bearing steel is produced by 60 t LD-LF+VD-CC flow sheet at Shijiazhuang Steel. The statistical data with 602～2449 heats showed that in LD steelmaking the average end-point carbon was 0. 15% by catch carbon practice, the average end-point [P]0.012% and the[S]0.034%. After LF+VD refining the average oxygen content in steel was9.4×10-6and the Ti content was 52×10-6but the fluctuating range of [Ti] and [O] was relatively large needs to further improve process and operation.关键词：氧气顶吹转炉;LF+VD;高碳铬轴承钢;工艺实践2|0|0更新时间：2026-01-21
- 摘要：The effect of two processes of calcium treatment: two step process (LF + Ca-Si wire feeding - VD + Ca- Si wire feeding) and one step process (LF - VD + Ca-Si wire feeding) at Xiangsteel on morphology of inclusions and mechanical properties of Nb-Ti microalloying grade E hull steel (0. 10%C) has been studied by thermodynamic calculation on equilibrium of Als - [O] and equilibrium of Caresidual- Als. Results showed that as S in steel ≤0. 003% , T[O] ≤15 x 10-6and controlled Als in steel 0. 02% 〜0. 04% , after one step process of calcium treatment the W4 pun spherical inclusions in steel were up to 93% , and cross impact energy at -40 t was 156 -240 J.关键词：Grade E Hull Plate;Ca Treatment;Mechanical Properties2|0|0更新时间：2026-01-21
- 摘要：The 0Crl8Ni9 clean stainless steel is produced by pretreated hot metal - 75 t K-OBM-S - VOD - LF flow sheet. During LF refining for steel 0Cr18Ni9 as bottom argon blown stirring power decreased from 20 ~40 W/t to 13 ~21 W/t with feeding available Ca-Si wire according to Ca/Al≈0.1, the oxygen content and Al2O3content in steel decreased respectively to less than 30 x 10-6and 5 x 10-6and the metallographic examination results showed that total amount of inclusions in slab of steel 0Crl8Ni9 decreased by 40% , the inclusions with size ≥20μm decreased to less than 5%.关键词：LF Refining;Clean Stainless Steel 0Cr18Ni9;Process Optimization3|0|0更新时间：2026-01-21
- 摘要：The compound,size,amount and distrbution of non-metallic inclusion in grade A hull plate steel (0. 16C,0.21Si,0.50Mn,0.011P,0.027S)produced by 30 t LD converter -ladle argon stiring- 150 mm×1050 mm slab concasting flowsheet have been analyzed and studied by electrolytic extraction analysis and scanning electron micro scope(SEM).Results showed that the inclusion in grade A hull plate stcel included silicate,alumina-silicate,sulphide and alumina-silicate-sulphide compound inclusion. The secondary oxidation of liquid steel and inclusion in steel from refractory materials counteract the metallurgical effect of argon blowing to remove inclusion in steel therefore to strengthen the ability of tundish removing inclusions could decrease large size inclusions in steel.关键词：转炉-钢包吹氩-连铸流程;A级船板钢;非水溶液电解;非金属夹杂物2|0|0更新时间：2026-01-21
- 摘要：The Φ160 mm non-quenched-tempered steel S38MnSiV(0.38~0.45C,0.55~0.75Si,1.40～1.55Mn, 0.08～0. 15V,0.020~0.050S,≤0.025P) has been developed by 30t EBT EAF-40tLF+VD-3. 16tingot-800/ 650×4 mill flow sheet. Examination results showed that he oxygen content in finished products was (8～13)×10-6nitrogen content(128～186)×10-6and hydrogen content(0.4~1.2)×10-6the structure and mechanical properties of Φ110 mm bar forged by Φ160 mm rolled products of steel S38MnSiV all met the requirement of standard; and the mean value bending fatigue limit of crankshafts made of this steel was3633.3 N ·m with safety factor 1.771.关键词：Non-Quenched-Tempered Steel S38MnSiV;High Strength and Toughness;Mechanical Properties2|0|0更新时间：2026-01-21
- 摘要：The effect of quenching and tempering temperature of Φ21 mm finished products rolled by 160 mm×160 mm concasting billet of spring steel 60Si2CrVAT quenched at 890~930 ℃ and tempered at 400～440 ℃ on structure and mechanical properties of steel has been tested. Results showed that the tensile strengh of tempered spring steel 60Si2CrVAT quenched at 910 ℃ was higher than that quenched at 890 ℃ and 930 ℃,and with increasing tempering tem perature the tensile strength of steel quenched at different temperature decreased. The structure morphology of tensile frac ture was analyzed.关键词：High Strength Spring Steel 60Si2CrVAT;Heat Treatment;Mechanical Properties8|0|0更新时间：2026-01-21
- 摘要：The 180 mm ×1200 mm slab of atmospheric corrosion-resisting steel 09CuPTiRE(≤0. 12C,0.06~ 0. 12P,≤0.020S,0.25～0.50Cu,≤0.03Ti,0.01～0.04RE)is produced by 80 t converter-ladle argon stirring-vertical-bending slab caster process. With using improved process measures such as controlling Cu/Ti≤20,P content ≤ 0. 11%,RE content 0.01%~0.03%, using special mold powder for steel 09CuPTiRE,mold liquid level fluctuation ≤10 mm and decreasing secondary cooling water rate,the occured rate of longitudinal crack of steel 09CuPTiRE decreased from original 15% to 0.5%.关键词：Atmospheric Corrosion-Resisting Steel 09CuPTiRE;Concasting Slab;Longitudinal Crack;Improved Process2|0|0更新时间：2026-01-21
- 摘要：The effect of titanium content on mechanical properties of 14～20 mm hot rolled plate of Q345A steel (0.08~0. 10C,1.19～1.46Mn,0.017～0.029Nb,0.02～0.08Ti) has been studied. Results showed that as Ti=0.02%, the strength of steel plate was not obvious change,as Ti content was0.02～0.04%,with increasing Ti content the strength of steel plate increased,and as Ti≥0.04%,with increasing Ti content the strength of steel plate decreased. With controlling Ti content within0.02%~0.04% in Nb-Ti microalloying Q345A steel for heavy truck plate, the optimum combined strength and plasticity shall be got.关键词：Nb-Ti Microalloying;Q345A Steel Plate;Titanium Content;Mechanical Properties2|0|0更新时间：2026-01-21
- 摘要：The Nb-Ti microalloying undersea linepipe steel HSL450S(0.06C,0.40Cr,0. 15Mo,0.02Ti,0.05Nb) has been developed by 90 t EBT arc funace- 100tLF+VD-wire feeding - Φ220 mm CC flow sheet.It was obtained by analyzing 30 heats that [O] was 35.2×10-6and [N] was78.8×10-6.The structure of steel was tempered bainite-pearlite + polygonal ferrite. The mechanical properties of Φ102 mm×14 mm and Φ168.3 mm×8.7 mm tube of steel HSL450S with grain size rating 10～11 met the requirement of standard of for undersea linepipe steel X60 and X65 grade.关键词：EAF-LF+VD;Nb-Ti微合金化;海底管线管钢;开发2|0|0更新时间：2026-01-21
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