共查询到18条相似文献,搜索用时 171 毫秒
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RH浸入管镁铬质挤压修补料试验研究 总被引:2,自引:1,他引:1
介绍了镁铬质挤压修补料的试验室试验研究情况,分析了各试验因素对试样物理性能的影响关系。通过与奥镁公司生产的挤压修补料物理性能的综合比较,从而优选了性能优良的实用配方。 相似文献
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变频调速以其优良的性能得到广泛的应用。本文主要通过日本安川及三肯变频器在冷料破碎工程改造中的安装、调试、运行,系统介绍了两种变频器的性能,及选型要点。 相似文献
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介绍了大型鱼雷式混铁车用Al_2O_3—SiC—C质振动镘涂抹料STPC—100,喷补料SGL—1的研制和应用情况。结果表明:两个牌号修补料完全适用于宝钢混铁车内衬Al_2O_3—SiC—C砖检修工艺要求,材料施工性能良好。在脱硫条件下,其使用寿命达到和超过了同类进口料的实物水平,为国内大型混铁车使用新材质修补料提供了经验。 相似文献
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以硝基萘为添加剂,考察了转炉热态自流修补料烧结性能的变化。研究发现,加入硝基萘交接班,热态自流修补料的烧损率略有增加,烧结强度明显提高。由此可见,硝基萘对促进热态自流修补料中沥青的碳化起着积极的作用。 相似文献
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本文简要介绍了高炉修补压入料的特性,采用特级矾土、棕刚玉、致密电熔刚玉和磷酸二氢铝为主要原料,加入适当的辅助原料及添加剂,研制出性能指标优良的压入料。 相似文献
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耐火喷涂料属不定形耐火材料,具有独特的成型方法和施工工艺,在工业炉窑上有着广泛的使用价值。本文介绍了两类新型耐火喷涂料的性能,以及它们在热风炉炉壳保护层和热风炉内衬修补上的应用。应用表明,耐火喷涂料的确能提高炉体的密封性、寿命和保温效果。 相似文献
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对内螺纹铜管尺寸优化、铝箔厚度减薄前后的空调热交换器进行了单体性能实验和整机性能实验对比。结果表明优化后的内螺纹铜管、铝箔完全满足空调器性能要求,为节约空调热交换器材料提供了重要依据。 相似文献
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原料7号皮带是新钢公司炼铁生产运输线上的主要皮带。工作中皮带中间位置纵向断裂70余米,经采用Belzona 2000系列材料进行冷补修复,取得良好效果和显著的经济效益。介绍了Belzona 2000系列材料的性能及冷补工艺。 相似文献
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In order to improve performance of semi-metallic friction material,the specimens doped with rare earth(cerous nitrate) were prepared.The effects of rare earth(cerous nitrate) and post heat treatment on properties of friction materials were discussed,and failure mechanism of friction materials was also analyzed.The result showed that the existing of cerous nitrate could stabilize friction coefficient,lower wear rate and increase impact strength,and when the content of the cerous nitrate was 3.0 wt.%,the semi-metallic friction material possessed optimal performances.The different post heat treatments had an influence on the friction coefficient,wear rate and linear thermal expansion coefficient of semi-metallic friction material.The worn surface and fractured surface were observed and analyzed by scanning electronic microscopy(SEM).It was identified that the semi-metallic friction materials doped with cerous nitrate acted abrasive wear and adhesive wear at the low temperature,and abrasive wear,adhesive wear and fatigue wear of materials appeared at the high temperature.The fracture of materials might be the result of matrix cracking interacting with interface separation. 相似文献
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The capability of cooling staves is crucial for a long campaign life of blast furnaces (BF). Transient heat transfer analysis of blast furnace cooling staves made of copper, cast steel, and ductile cast iron are performed. Moreover, the temperature field variations of cooling staves according to different distributions of gas flow temperature are studied. A discussion of cooling staves made of the three different materials is given based on their performance during the transient heat transfer process. The results indicate that copper staves are suited for a long campaign life, as their performance is much better compared to cast steel and ductile cast iron staves especially during unsteady heat transfer. Moreover, the capacity of staves made of cast steel is better than that of ductile cast iron. 相似文献
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蓄热式热交换器的可用能分析 总被引:5,自引:0,他引:5
本文把可用能分析的方法引入到蓄热式热交换器热工特性的研究中,提出的可用能效率综合了传热和流动两方面的因素。研究表明可用能效率比温度效率和热效率能更真实反映蓄热式热交换器的热工行为,并可用于指导蓄热式热交换器的优化设计。 相似文献
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第二类吸收式热泵及其在冶金企业中的应用前景 总被引:1,自引:0,他引:1
第二类热泵可利用中间温度的废热与低温热源之间的热势差,制取热量少但温度高于中温废热的热水或蒸汽。利用第二类热泵,回收冶金企业中产生的低品位余热,用于供暖、物料干燥、产生高品位的热水或蒸汽及物料蒸发等,可为企业带来巨大的经济效益和社会效益。 相似文献