保温

Many batcher drip nozzles are installed at the bottom of holding furnace. The molten metal drips to the cooling water box which is mounted under the holding furnace through the batcher drip nozzle. The dwell time of granulated metal is 10~18 seconds in the cooling water box.

在保温炉底部，安装多个定量器滴嘴，保温炉内的金属液流经定量器滴嘴后，滴入保温炉下方的冷却箱内，金属颗粒在冷却水中停留10~18s。

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Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

Simulation results verify that insulated board can effectively protect the heat from transferring into the foundations, and the frozen table is always around the lower bottom of the boards; the position of the frozen table with insulated boards is higher than that of without; the embank- ment formation has a better effect on the center of embankment, the shoulder and toe of the roads than others; after consideration of the construction effect, the best lay out of the insulated boards is higher than the position of natural ground surface to 0.3-0.6 m; this formation of the embankments is the right effective constructer to be used in the permafrost on the Qinghai-Tibet railway.

通过数值模拟可知：保温板能够有效地阻止热量由路基面向下传入地基中，使0℃等温线始终在保温板底层；复合路基多年冻土上限的位置要比无保温板时的高；该结构形式对路基中心、路肩和坡脚下的多年冻土上限抬升的综合效果更好；考虑施工条件后，复合路基在保温板铺设距离天然地面之上0.3~0.6 m对于路基稳定性最为有利；该路基结构形式为青藏铁路多年冻土区路基的理想结构形式，有利于克服全球变暖的影响。

But in the middle and lower reaches of Chang-Jiang river,because it is not very cold in winter,the research indicates the insulated inner wall can improve the comfortableness of the human body in the room with intermitting heating .

大多数观点认为外墙外保温要比内保温好，这表现在墙体保护、防止外墙内壁面结露以及少占用室内空间，但在长江中下游地区，由于冬季室外温度并不是非常寒冷，在间歇供热条件下，研究显示外墙内保温要比外保温可以提高人体热舒适性。

The properties of carbonized corn straw using as thermal insulating agent for liquid metal were investigated.

针对金属液用保温剂碳化稻壳价格不断上涨和保温效果有待进一步提高的现状，以开发新型、质优价廉保温剂为目的，考察了碳化秸秆的理化性能以及作为金属液保温剂的使用性能。

Shell by welding steel plate and steel form,the box EAF li-ning material from the ultra-light 0.6g/cm3 energy-saving insulating refractory brick building,dissecting home sili-cate insulation fiber carpet,furnace lining aluminum shelland filling between the layers expansion Insulation powder insulation,electriccomponents using high alloy products 0Cr27Al7Mo2 deviation from the system.

外壳由钢板和型钢焊接而成，箱式电炉炉衬材料由超轻质0.6g/cm3节能耐火保温砖砌筑，夹层置硅酸铝纤维毡保温，炉壳与炉衬硅酸铝夹层之间填充膨胀保温粉保温，电热元件采用高合金制品0Cr27Al7Mo2绕制而成。

Float ore work mortar is a superior crack resistance and to a certain flexibility, is designed to vacuum glass ball of beads perlite insulation mortar design, is conducive to raising and protecting the ball vacuum glass of beads perlite insulation mortar comprehensive performance is vacuum-perlite insulation glass beads of mortar than with supporting materials, and is particularly important in the whole insulation system, thin scraping thickness is batter, generally no more than 2 mm.

抹面抗裂砂浆是具有优异的抗裂和一定柔性，是专为真空球珍珠岩玻化微珠保温砂浆设计的，有利于提高和保护真空球珍珠岩玻化微珠保温砂浆的综合性能，是真空球珍珠岩玻化微珠保温砂浆比配的配套材料，在整个保温系统中尤为重要，刮抹厚度以薄为宜，一般不超过2mm。

Float ore work mortar is a superior crack resistance and to a certain flexibility,is designed to vacuum glass ball of beads perlite insulation mortar design, is conducive to raising and protecting the ball vacuum glass of beads perlite insulation mortar comprehensive performance is vacuum-perlite insulation glass beads of mortar than with supporting materials, and is particularly importantin the whole insulation system, thin scraping thickness is batter, generally no more than 2 mm.

抹面抗裂砂浆是具有优异的抗裂和一定柔性，是专为真空球珍珠岩玻化微珠保温砂浆设计的，有利于提高和保护真空球珍珠岩玻化微珠保温砂浆的综合性能，是真空球珍珠岩玻化微珠保温砂浆比配的配套材料，在整个保温系统中尤为重要，刮抹厚度以薄为宜，一般不超过2mm。

There are two types of materials, blocks and plates, and it could use different prescriptions and processing to make load-bearing wall block, non-loading bearing wall block and insulation block, plates include insulation roof plate, insulation floor plate and insulation wall plate.

该设备制作加气混凝土，是一种新型的建筑材料，主要有砌块和板材两类，可利用不同配方、工艺制作承重墙砌块、非承重墙砌块和保温砌块，板材分为屋面保温板、保温楼板和保温墙板。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。