排序方式: 共有31条查询结果,搜索用时 31 毫秒
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XIAN Aiping LI Peiji CHEN Wenxiu WANG Yikang Institute of Metal Research Academia Sinica Shenyang ChinaCHEN Renvi MEI Dongsheng Panzhihua Institute of Iron Steel Research Ministry of Metallurgical Industry Panzhihua China associate professor Institute of Metal Research Academia Sinica Shenyang China 《金属学报(英文版)》1993,6(6):415-419
The determination of dffusible hydrogen in U71Mn heavy rail steel,and hydrogen diffusivityas well as the hydrogen distribution in the cross section of blooms with stack cooling were stu-died.The results showed that,most of the hydrogen in blooms of heavv rail steel is diffusible,the hydrogen diffusivity in U71Mn rail steel blooms at room temperature is(0.85—1.02)×10~(-6)cm~2/s,after stack cooling,the hydrogen content in bloom will decrease greatly which ishelpful to form the flake-free phenomenon in the heavy rail produced by Panzhihua Iron andSteel Company. 相似文献
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FANG Shufang ZHANG Jian Panzhihua Institute of Iron Steel Research Panzhihua China Laboratory of Physics Panzhihua Institute of Iron Steel Research Dukou City Sichuan China 《金属学报(英文版)》1990,3(6):446-448
The precipitation of Ti(V)N(C)in high-carbon steel PD_3 during thermomechanicol treatmentat austenitic temperatures after deformation has been observed.The average size ofTi(V)N(C)particles may reduce with the increase of strain and the decrease ofthermomechanical treatment temperature,and vise versa.The growth of Ti(V)N(C)particlesat 920°C is found to be controlled by the interface reaction between precipitated particles andmatrix. 相似文献
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我国生物柴油产业现状及发展对策 总被引:2,自引:0,他引:2
石油危机、环境污染加速了可再生、环境友好替代能源的发展,生物柴油无疑是其中一个重要热点。作为可再生的生物质液体燃料,生物柴油的开发应用将对社会经济的发展产生巨大的影响。对改善生态环境、提高能源安全、实现可持续发展及调整农业结构、增加农民收入等具有重要意义。目前世界上许多国家正从国家战略的高度大力开发生物柴油技术并推进其产业化进程。就生物柴油的优点、发展生物柴油的意义及我国生物柴油产业研究发展现状进行了综述,并对我国生物柴油产业的发展提出具体建议。 相似文献
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变压器故障的色谱分析及判断 总被引:2,自引:1,他引:1
介绍了判断变压器故障的机理,并对特征气体进行了分析、判断,同时根据色谱分析和直流电阻等试验结果确定故障部位。 相似文献
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LAN Yaozhong Panzhihua Institute of Iron Steel Research Sichuan ChinaZHU Zuze LIU Chunpeng Kunming Institute of Technology Kunming China LAN Yaozhong Panzhihua Institute of Iron Steel Research Dukou Sichuan China 《金属学报(英文版)》1992,5(7):65-67
The process of Luda ilmenite smelting by plasma furnace has been studied by means ofself-designed plasma torch. The prereduced Luda ilmenite was melted satisfactorily in plasmafurnace to produce Ti enriched slag containing 90-98% TiO_2. 相似文献
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研究了钢轨生产线上拉钢系统驱动轴发生的早期断裂。其断口形貌及裂纹扩展花样表明该轴是因变截面部位严重的应力集中而引起旋转弯曲扭转疲劳断裂。增大圆角半径是防止此类断裂的有效方法。 相似文献
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借鉴耐火材料烧结性能的研究方法 ,通过研究连铸保护渣的炭质材料种类 (中超炭黑、半补强炭黑、鳞片石墨、土状石墨和焦炭 )及含量对烧结性能的影响 ,提出了评价保护渣烧结特性的方法和影响渣圈形成的原因。结果发现 :致密化起始温度Tq和致密化速率U可作为衡量渣圈生成的主要指标 ,U高或Tq低的保护渣的烧结倾向大 ,在使用中易结渣圈 ;在保护渣中加入炭质材料 ,可以降低保护渣的U ,从而抑制保护渣的烧结 ;在试验所用的炭质材料中 ,炭黑降U的效果优于石墨 ,其中中超炭黑的效果最好 ,其次为半补强炭黑和鳞片石墨。 相似文献