共查询到20条相似文献,搜索用时 187 毫秒
1.
2.
3.
抚顺铝厂科研所继成功地进行62000安自焙槽干法启动后,又于1984年7月在135千安中间下料预焙槽上进行了干法二次启动的尝试并获得成功。此次干法二次启动,装炉方式与以往相同(即先注入铝水,后装填启动槽物料),焙烧历经88小时,采用无效应启动。干法启动的实践说明:1.大型预焙电解槽焙烧阶段,调整各阳极组的 相似文献
4.
介绍了60kA电解槽全系列被迫停槽后的再焙烧启动技术以及焦粉焙烧、干法效应启动、干法无效应启动及二次启动的实践,指出了焙烧启动过程中易出现的问题及处理办法。 相似文献
5.
75kA预焙槽系列焙烧启动实践 总被引:1,自引:0,他引:1
在总结伊犁电解铝厂60kA自焙槽技改成75kA预焙槽系列焙烧启动实践基础上,对采用铝液焙烧启动法与热启动法的分析比较,指出热启动法具有减少焙烧时间,启动速度快且平稳,节电,省物料,操作简单,管理方便,有利于延长寿命等优点。 相似文献
6.
7.
8.
9.
新系列自焙阳极电解槽焙烧启动是一项重要的工作。焙烧质量的优劣直接影响到电解槽以后的运行和使用寿命。铝电解槽的焙烧方法较多,七十年代以前,“铝液焙烧法”只用于大修电解槽和预焙阳极电解槽的焙烧,新系列自焙电解槽的焙烧 相似文献
10.
11.
12.
13.
14.
A. A. Babakov 《Metal Science and Heat Treatment》1967,9(10):764-770
Conclusions Highly alloyed steels and alloys are produced in conformity with GOST or technical specifications in thick and thin sheets, beams and channels, bars, hot-rolled and cold-rolled pipe, and rod. Castings are produced in the specialized plant of the Ministry of Chemical and Petroleum Machine Building.The technology of welding stainless steels and alloys is given in [15] and [16].TsNIIChERMET. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 43–50, October, 1967. 相似文献
15.
模具渗硼工艺及其发展应用 总被引:4,自引:0,他引:4
渗硼是提高模具使用寿命的重要途径,是在金属表面形成高硬度的金属硼化层,显著提高其耐磨性,且具有良好的耐热性和耐蚀性。近年来,随着渗硼工艺逐步改进和完善,已发展了复合渗、多元共渗及低温渗硼工艺,取得了良好的经济效果。 相似文献
16.
17.
A. Yu. Tsivadze G. V. Ionova V. K. Mikhalko 《Protection of Metals and Physical Chemistry of Surfaces》2010,46(2):149-169
The possibility of using unique properties of lanthanides in the nanotechnology is demonstrated. The origination of linear
and nonlinear optical properties of lanthanide compounds with phthalocyanines, porphyrins, naphthalocyanines, and their analogs
in solutions and condensed state and the prospects of obtaining novel materials on their basis are discussed. Based on the
electronic structure and properties of lanthanides and their compounds, namely, optical and magnetic characteristics, electronic
and ionic conductivity, and fluctuating valence, molecular engines are classified. High-speed storage engines or memory storage
engines; photoconversion molecular engines based on Ln(II) and Ln(III); electrochemical molecular engines involving silicate
and phosphate glasses; molecular engines whose operation is based on insulatorsemiconductor, semiconductor-metal, and metal-superconductor
types of conductivity phase transitions; solid electrolyte molecular engines; and miniaturized molecular engines for medical
analysis are distinguished. It is shown that thermodynamically stable nanoparticles of Ln
x
M
y
composition can be formed by d elements of the second halves of the series, i.e., those arranged after M = Mn, Tc, and Re.
Prospects of using lanthanide superconductors in nanotechnology are considered. 相似文献
18.
19.
《稀有金属材料与工程》2006,23(4):23-26
结合近年来现场试验与施工实践,分析研究了中小型镍材(工业纯镍)设备与管道的特点、性能、焊接缺陷与产生原因,以及防止与消除其缺陷、优化制造施焊质量的工艺措施,并总结了若干条注意事项。 相似文献