Materials Literature
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The austenite dynamic recrystallizing process of VIF melted and forged 625 mm bar of Nb-V-Ti microalloying 0. 37C-1.45Mn non-quenched and tempered steel (/%: 0. 37C, 0. 60Si, 1. 45Mn, 0. 025Nb, 0. 078V, 0.017Ti) with single pass compression, strain rate 0. 1 ~ 10 s-1and reduction by 60% at 950 ~ 1 150 ℃ has been studi…
The in-line examination and statistics on casting process for 220 ~ 320 mm x 1 800 ~ 2 700 mm wide-thick slab of 0.07% ~0,18% C steel have been carried out for one year at steel work to study the effect of process parameters including casting rate (0.65 ~ 1. 2 m/min), liquid superheating extent (13-35 ℃), mold inlet w…
A mathematic model for solidification process of 35 t polygonal ingot of 40CrNiMo steel (/% ： 0.37-0.44C, 0.17-0.34Si, 0.50-0.80Mn, ≤0.035P, ≤0.035S, 0. 60-0.90Cr, 1.25-1.65Ni, 0.15-0.25Mo) has been established by using three-dimensional software Procast to simulate the ingot temperature field and steel shrinkage rate…
Based on turbulent model and VOF model, the numerical simulation and analysis on gas-slag-liquid three- phase flow field in 210 t ladle furnace (LF) during argon blowing have been carried out by using CFD fluid engineering simulation software FLUENT6. 3.26 to get the effect of bottom blowing porous plug position (sing…
The hot compression test on steel 30NiCrMoV12 for high speed train axles (/% : 0.26C, 0.33Si, 0.62Mn, 3.01 Ni, 0.82Cr, 0.56Mo, 0.10V) with strain rate 0.01-10 s-1at 850-1150 ℃ has been carried out by using Gleeble-3500 thermal simulation machine with specimen cutting from 0250 mm forges. The austenite deformation beha…
A mathematical model for supersonic jet oxygen lance with axial calculated length 2 200 mm and diametrical calculated length 800 mm is established by using GAMBIT and the numerical simulation study on characteristics of the supersonic jet oxygen lance has been carried out by using FLUENT software. The supersonic jet c…
Effect of the initial cladding ratio 5.40%-15.53% with 0.45C steel, NM360 abrasion-resistant steel, 310S and 316 stainless steel 5.1-15.2 mm initial cladding plate and Q345 carbon steel 82.7-90.0 mm initial base plate and the total reduction 35%-75% on cladding ratio of clad steel plate hot-rolled at 1150-1000 ℃ has b…
The flow sheet for bearing steel G55SiMoVA for oil drilling tool (/% ： 0.52-0.55C, 0.90-1.l0Si, 0.30-0.50Mn, 0.40-0.60Mo, 0.20-0.30V, ≤0.015P, ≤0.015S) is scrap+60%-70% hot metal-50 t UHP EBT EAF-60 t LF-VD-260 mm x 300 mm CC process. With using foaming slag submerged arc operation in whole period of arc furnace steel…
The effect of annealing temperature (at 760 ~ 880 ℃ for 7 min) and time (at 820 ℃ for 3 ~ 9 min) on grain size, recrystallization rate and texture of 0. 3 mm cold-rolled sheet of oriented silicon steel (/% : 0. 046C, 3.07Si, 0. 09Mn, 0. 029P, 0. 004S, 0. 005Al) has been tested and studied. Results show that with optim…
The compound-slab (/mm) 415 x 1 630 x2 570 for compound-rolling is got by removing the scale of awaiting compound-rolling faces of double (/mm)210 x 1 630 x 2 570 Q345B steel casting slabs, cutting circle welding V and welding together. By vacuum-pumping compound-slab cave, packing and heating to 1 220 ~ 1 260 °C the…
The test steel 1Cr17Mn6Ni5N (/% ： 0. 09 ~ 0.11C, 0.19 ~ 0.29Si, 7.33~7.42Mn, 0.011 -0.015P, 0. 004 ~ 0. 007S, 16. 87 ~ 17. 24Cr, 5. 06 ~5.19Ni, 0. 21 ~0. 40N) is melted by a 10 kg vacuum induction furnace with adding chromium nitride to N-alloying in nitrogen atmosphere. The compression 60% experiment of test steel in…
Test normal A36 steel and containing Ce A36Ce steel for shipbuilding (/% : 0.12-0.13C, 0.21 Si, 0.77-0.79Mn, 0.013-0.015P, 0.003-0.004S, 0.32-0.33Cr, 0.023-0.025Al, 0-0.009Ce) are melted by vacuum induction furnace, cast to 7 kg ingot, forged to 25 mm x 25 mm billet and normalized at 865 °C for 0. 5 h. The corrosion r…
Two heats of steel 21CrMolO (/%: 0. 18G, 0.29 ~0. 30Si, 0. 25 ~0. 27Mn, 0.007 ~0.008P, 0.003S, 2. 40 ~2.42Cr, 0. 35 ~0. 37Mo) are melted by 30 t EAF-LF-VD-7.2 t casting ingot flow sheet. The T-type steel tube with T-type head outside diameter 860 mm, tube body outside diameter 740 mm, wall thickness 60 mm, total lengt…
In recent years, in order to meet the application requirement of specialty steel grades such as ultra fine grain steel, dual phase steel (DP) , transformation induce plasticity steel (TRIP) and interstitial free atom steel (IF) , the ≥150 ℃/s ultra fast cooling technology with high efficiency of heat exchange, tempera…
The cold-rolled non-oriented silicon steel (/%: 0.003C, 2.35Si, 0.22Mn, 0.011P, 0,002S, 0. 36Al, 0.003 0N) is cold-rolled to 0.35 mm sheet from 2. 3 mm hot-rolled plate normalized at 890 °C or 940 for 3 min. The effect of normalizing temperature and annealing process at 800 ~ 920 ℃ for 3 min on high frequency (400 Hz)…
The test interstitial-free steel IF(/% : 0.0036-0.0049C, 0.005-0.007Si, 0.11-0.12Mn, 0.007P, 0.005S, 0.007-0.011Alt, 0.047-0.051Ti, 0.0030N, 0-0.0037Ce) is melted by a 10 kg vacuum induction furnace, and forged to 30 mm x 25 mm billet, finishing forging at 950 ℃ , air cooling. With using Gleeble-1500D thermal simulati…
Test steel CrNi3Si2MoV (/% ： 0.21C, 1.75Si 0.29Mn, 0.006 0P, 0.0007S, 1.03Cr, 2.86Ni, 0.31 Mo, 0.08V) is melted by a 50 kg vacuum induction furnace and forged to φ15 mm bar product. The effect of hot deformation on structure and hardness of test steel CrNi3Si2MoV austenitized at 1 200 ℃, then hot deforming with 10% 〜…
The distribution of magnetic field and Joule heat field of electrode, slag and remelting ingot system during electroslag remelting (ESR) process is obtained by using finite element software ANSYS, and the effect of electrode filling ratio 0. 3 ~ 0. 7 in three-dimension ESR process coupling magnetic field and Joule hea…
The structure and properties of three alloys 0.05C-25Cr-37Ni-0.6Nb(0.6Nb), 0.05C-25Cr-37Ni-0.6Nb-0.6Ti(0.6Nb-0.6Ti) and 0.05C-25Cr-37Ni-l.8Nb( 1.8Nb) melted by 150 kg vacuum induction furnace, rolled to 30 mm plate and solid-solution-treated at 1160-1220 ℃ for 1 h, air cooling have been studied. Results show that as c…
An analysis on the surface crack formation for crankshaft forgings of steel 42CrMo (/%: 0. 43C, 0. 77Mn, 0. 24Si, 0. 014P, 0. 007S, 1. 08Cr, 0.17Mo, 0. 01Cu) with 865 ℃ 1. 5 h oil quenching + 640 ℃ 4 h tempering, water cooling has been carried out. Results show that the surface cracks of crankshaft forgings are quench…