Failure Research for the Water cooling System of ABB High Voltage Inverter;
ABB高压变频器水冷系统特殊故障的研究
The tests included: water cooling manual arc welding cracking test with oblique Y-groove and water cooling submerged arc welding test using welding wire WQ-1 developed by the Technology Center of WISCO and sintered flux CHF101.
根据杭州湾大桥工程的要求 ,对武钢二热轧厂首批生产的 2 0mm厚管桩用钢Q345C -Hq进行了水冷焊接试验研究。
The results showed that the bainite structure can be obtained by water cooling (90℃/s), its properties, special impact value can be remarkably improved.
对这种不含B的微合金钢 ,经水冷( 90℃ /s)可得到贝氏体组织 ,显著提高钢的力学性能 ,特别是冲击性能。
Discussion on the Special Topics of Water-cooling Hydro-generators and the Selection of Cooling Methods for Three Gorges Hydro-generators;
水冷水轮发电机特殊问题及三峡水轮发电机冷却方式选择
The water-cooling two-stroke gasoline engine oil was developed from base oil made by sour crude,no peculiar smell kerosene,PIB with low molecular weight and some domestic additives including pour point depressant,antirust agent,antioxidant,antiwear agent and ashless dispersant,etc.
以中国石化茂名分公司生产的含硫原油基础油、无异味煤油和PIB为基础油组分,加入国产降凝剂、防锈剂、抗氧剂、抗磨剂和无灰分散剂研制出的水冷二冲程油具有较好的润滑性能和清净性能,达到TC-WⅡ规格要求。
In order to get the different effect on steel ingot inner structure while using ultrasonic vibration under various conditions, the experiments compare with and without ultrasonic vibration on the water-cooling solidified paraffin ingot under different casting temperature and time, and gets a better ingot inner structure under a comparative lower temperature (<62 ℃) while the yield is reduced.
为了探索不同条件下使用超声振动对改善钢坯凝固组织结构的作用,试验对不同浇注温度、时间下有无超声振动的水冷凝固石蜡铸坯进行了对比研究,得到较低温度(62℃以下)时超声冷却对改善铸坯内部结构有很好的效果,但减小了收得率;浇注温度为72℃时,超声作用更多体现在搅拌石蜡液芯上,提高了铸坯的收得率,作用时间长时(20min)可以改善铸坯内部结构。
The casting process of water-cooled copper metal mould for ductile iron camshaft is presented.
介绍了球铁凸轮轴水冷铜金属型铸造工艺,为了满足球铁凸轮轴的要求(QT700-2,铁素体≤50%),适当加入合金元素Cu、Sn,其中Cu控制在1。
This paper introduced some specialties of shell-tube-styled water-cooled condensers in marine air-conditioners, especially analyzed the differences of this kind of conducer from that on land in such aspects as the material of heat exchange tube, design structure, rot proof technics and the effect of incrustation, etc.
介绍船用空调装置中壳管式水冷冷凝器的特点,着重分析了其冷凝器在换热管材质、设计结构、防腐工艺、水垢的影响等方面与一般陆用空调冷凝器的区别。
Operations and maintenances of water-cooled generators are introduced in this paper.
从设计和运行的角度对大型水轮发电机采用空冷和水冷的方式进行了比较和探讨，并简要介绍了国内几家水内冷机组的运行和维护情况。
It introduce the structure and principle of the mixed air cooled and water cooled door frame applying the cooling door frame can save energy ideally.
介绍了风冷兼水冷混合型冷却门框结构和原理 ,通过实际应用 ,取得了理想节能效果 ,证明了混合型冷却门框的实用