Results 71 to 80 of about 712,370 (141)
Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel
Teshugang, 2011 The behavior of austenite grain growth of Nb-bearing spring steel 60Si2MnNb (%: 0. 57C, 1. 60Si, 0. 76Mn, 0. 34Cr, 0. 022Nb) during heating at 950 ~ 1 250℃.
姜超 +5 more
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A Study on Behavior of Oxide Inclusions in Bearing Steel GCrl5 at Refining End of a 60t LF
Teshugang, 2018 With the deoxidation by adding ferroaluminium and ferrosilicon in EAF tapping and the LF initial refining slag (/%:27.39~37.34 Al2O338.42~38.68 CaO，14.20~18.38 SiO28.50~10.72 MgO，0.82~0.89 FeO，0.27~0.33 MnO，0.69~0.74 S，0.66~0.75TiO2（CaO）/（SiO2）=2.09~2.72,
沈万林, 张志成, 罗小燕
doaj
Production Practice of 85 〜95 t Ingot of Steel S34MnV for Marine Crank
Teshugang, 2013 The production flow sheet of steel S34MnV for marine crank is 100 t Consteel arc furnace-LF-VD + VC (vacuum casting) -ingot process. The observation and analysis on samples of defect region of steel S34MnV ingot are carried out by using scanning electron
庞宗旭, 林腾昌, 朱荣, 王成杰
doaj
Water Model Test of 58t Tundish with Channel Filter for Two Strands Slab Casting and Application
Teshugang, 2018 The effect of channel filter on fluid field of liquid in a 58t tundish has been studied by using geometric similarity 0.29 : 1 water model to test liquid flow by both control flow devices- turbulence controller + retaining wall + dam and turbulence ...
钟巍 +4 more
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, 2007 本发明涉及一种有机-无机杂化类水滑石负载杂多酸盐催化剂的制备方法及其在液相烯烃的过氧化氢环氧化反应中的应用。催化剂的制备方法是先合成层间为长链有机酸根阴离子的有机-无机杂化类水滑石，用水重新分散成浆后，取适量浆液与“三明治”型杂多酸盐进行阴离子交换，杂多酸盐的量是类水滑石阴离子交换容量的0.1～2倍，离子交换反应的条件是在N2保护下于50～100℃搅拌5～120分钟，经过滤、洗涤、干燥，即得有机-无机杂化类水滑石负载的杂多酸盐催化剂。将该催化剂用于液相烯烃的过氧化氢环氧化反应，具有高的催化活性和选择性 ...
刘 鹏, 李 灿
core
Effect of Dynamic Soft Reduction in Casting on Porosity and Inclusions in Heavy Rail of Steel U75V
Teshugang, 2009 6 Soft reduction stands are installed at each strand of 6 strands caster for 280 mm×380 mm bloom. The soft reduction in height of bloom is ≤8 mm wih reduction rate≤1.5mm/m.Results showed that with suitable process conditions and using ...
李峰 +5 more
doaj
Effect of Adding AlzO3Nano-powder on Mechanical Properties and Inclusions of Hollow Steel 55SiMnMo
Teshugang, 2008 The mechanical properties and inclusions of hollow steel 55SiMnMo added 0.018% 120 nm Al2O3nano- powder in earlier stage of reduction penod and 0.002% nano-powder during ingot casting have been studied. Results
王国承 +4 more
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本发明公开了一种提高镁在III-V族氮化物中掺杂效率的方法，该方法是在镁掺杂的p型III-V族氮化物的表面蒸镀一层2nm至10nm的碲，然后在N2气氛下退火，并用酸性液体洗掉蒸镀在p型III-V族氮化物上的碲。利用本发明，使镁在III-V族氮化物中的掺杂效率大大的提高，增加了p型III ...
纪攀峰, 朱峰, 李京波
core
, 2007 分不同地区和作物,对黄土高原小杂粮生产情况进行了系统研究,表明小杂粮在黄土高原旱作农区粮食生产中居重要地位。山西省小杂粮播种面积最大,甘肃省次之,宁夏回族自治区播种面积虽不及陕西省,但所占粮食播种面积的比重却较高。在不同小杂粮作物中,以马铃薯分布面积最大,谷子次之,其后依次是荞麦、绿豆,其他作物则分布相对较少。同时对小杂粮分布最为集中的黄土高原水土流失区主要小杂粮作物区域分布进行了研究,将该区分为3个区,10个亚区,评述了各区主要小杂粮生产和分布特点 ...
王立祥 +4 more
core
Practice of Steel 18CrNiMo7-6 Bloom by Process of 120 t BOF-LF-RH-410 mm x 530 mm Continuous Casting
Teshugang, 2019 The steel grade 18CrNiMo7-6 with diameter of Φ115 ~250 nun round from process route of hot metal + scrap-120 t BOF-RH- 410 mm x530 mm continuous casting-bloom heating by walking forward heating fumace-750 rolling¬annealing. Its chemical composition is (/%
李博鹏 +6 more
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