, 2014 坩埚炼铅法是中国传统炼铅技术中一种特别的冶炼方法,即在坩埚中用铁从硫化铅中还原出铅。本文梳理有关坩埚炼铅的文献资料,详细介绍该技术的冶炼过程,包括炉子的建造、坩埚的制作、配料、冶炼操作和金银的提取。另外,对近年来发现的两处古代坩埚炼铅遗址出土的坩埚和炉渣进行科学检测,以复原当时的技术。并与蒸馏法炼锌、坩埚炼铁等中国传统坩埚冶炼技术作比较 ...
刘思然 +3 more
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In-situ observations of grain refinement by TiN particles in the simulated coarse-grained heat-affected zone of a high-strength low-alloy steel [PDF]
, 2016 The effect of grain refinement by TiN particles in the simulated coarse-grained heat-affected zone of a high-strength low-alloy steel was investigated by means of analytical characterization techniques such as in-situ microscopy and electron back ...
LI Guang-qiang +2 more
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Effect of Rare Earth Content on Microstructure and Corrosion Resistance of HRB400 Steel [PDF]
The steel rebar with low cost and excellent corrosion resistance were prepared by adding trace lanthanum （La） and cerium （Ce） rare earth elements. The effect of rare earth addition on the microstructure and corrosion resistance of corrosion resistant ...
Chen Hao, Sun Yibin, Xie Qingmin, Liu Xiaolong, Zhang Cunshuai, Peng Zhixian, Cheng Zhaoyang, Liu Jing
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Influence of key parameters in steelmaking progress on the inclusion defects of rolled IF steel sheet [PDF]
, 2017 Aiming at the steelmaking process of IF steel in Han-Steel, the relationship between key parameters and the defects of the rolled sheet was investigated, and the correlation among the parameters was also analyzed through the logic regression analysis ...
BAO Yan-ping +6 more
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Effect Mechanism of Curling Temperature on the Toughness of Titanium Microalloyed High-strength Steel GCL700 [PDF]
The effect of curling temperature on the mechanical properties of Ti microalloyed high-strength steels was investigated using electron backscatter diffraction， transmission electron microscopy， scanning electron microscopy and mechanical experiments.The ...
Wang Yi, Che Zhichao, Chen Yufeng, Yang Shufeng, Zhang Junfen, Xue Qihe, Li Jingshe
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In-situ observation of MnS effect on the tensile strength anisotropy of non-quenched and tempered steel [PDF]
, 2016 In-situ observation of the behavior of MnS inclusions in non-quenched and tempered steel with a sulfur mass fraction of 0.065% was performed during tensile tests by using a laser confocal scanning microscope (LCSM) to investigate the effects of the ...
LI Meng-long +4 more
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A method for characterizing the flow fluid in a multi-strand tundish [PDF]
, 2016 The residence time distribution(RTD) obtained from a pulse tracer experiment is always used for characterizing the flow fluid in tundishes. However,it is not suit to multi-strand or asymmetric tundishes because of negative volume or deviations calculated
CUI Heng, LI Dong-xia
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Characteristics of the as-cast high-carbon microalloyed continuous casting bloom steel for expansion-break connecting rods [PDF]
, 2022 Expansion-break connecting rods are high-end products for automotive precision transmission. They need to have high strength, high toughness, and brittle cleavage fracture characteristics during cracking processing.
Hai-yan TANG +6 more
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Zhongguo shiyan zhenduanxue, 2011 脊髓缺血性损伤在临床中较为常见,治疗花费高,预后差,给个人和社会带来巨大的经济负担,良好的动物模型是实验研究的基础[1-2],既往多采用经腹手术夹闭主动脉的方法建立缺血模型[3],操作复杂、动物损伤大。我们尝试采用DSA引导下栓塞相应节段腰动脉的方法建立脊髓缺血损伤模型 ...
秦治刚 +6 more
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野生动物学报, 2006 中国林蛙,又名哈士蟆,油蛤蟆、田鸡,与猴头,熊掌、飞龙并称“四大山珍”。在动物分类上,隶属两栖纲、无尾目、蛙科、蛙属。其体态匀称,头部扁宽,呈三角形。皮肤较光滑,背部及体侧有小疣粒,背部、体侧及四肢为土灰褐色,冬眠期及产卵期体色为黑褐色,夹杂黑斑,背部有明显的 ...
范秀娟, 郭玉民
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