查询词典 sinter

The mian works are as follows:(1)By coprecipitation technique and coprecipitation- gel technique the nano zirconia powder was produced, factors affecting the properties of nano zirconia powder such as pH and the content of stabilizator are analyzed;(2)By the new pressless sintering process, the nano zirconia ceramic was produced, factors which can affecting the properties of nano zirconia sinter body such as moulding press and the sinter temperature are analyzed;(3)By the microtherm pressless sintering process, the nano copper added functional zirconia ceramic composite was produced, microscopic dimensionality and electric properties of such sinter body and the factors affecting such sinter body are analyzed;(4)By the self-invented "external albumen coating" technique the zirconia powder was successfully coated by carbon in the corresponding sinter body, which can help solve the traditional aggregation problem to some degree;(5)Based on analyze the characteristics in the nano powder sinter process, the "three-ball sinter model" was proposed, for the relationship between the relative density and porosity of sinter body, by mathematical fitting, such model was successfully verified.

本研究比较系统地研究了纳米氧化锆陶瓷的合成与成型机理，特别是讨论了纳米氧化锆陶瓷的稳定性，为防止纳米颗粒在外场作用下的团聚和长大提供了理论基础和实验数据，具体工作有以下几方面：(1)采用共沉淀法和共沉淀-凝胶法制备了纳米氧化锆粉体，并分析了pH值和稳定剂含量对粉体性能的影响；(2)采用新型无压烧结工艺制备了纳米氧化锆陶瓷，并分析了成型压力和烧结温度对烧结体性能的影响；(3)采用低温无压烧结工艺制备出添加纳米铜的功能性纳米氧化锆复合陶瓷，并分析了烧结体的微观尺度和电学性能的变化以及影响因素；(4)通过自创的&鸡蛋清外敷法&在真空镀膜台上对纳米氧化锆粉体进行包敷碳颗粒的表面处理，并采用真空烧结工艺制得相应烧结体，初步开始解决陶瓷烧结过程中团聚长大这一传统难题；(5)通过分析纳米颗粒在制备烧结体过程中的实际特点，提出了&三球烧结数学模型&，通过引入坯体相对密度和孔隙率的相对关系分析并通过自行编写的数学拟合软件，验证了这一数学模型。

Top sintering material preheats for a short time、sinter at lower temperature、cools too fast and has low crystallinity, especially, network SFCA offorms difficultly in the top layer, that results in high ratio of pore, so the strength of top sinter is low. when thickness of sintering material is increased, the ratio of top sinter will be decreased, in its entirety, the strength of sinter will rise.

5烧结矿破碎属脆性断裂，一般在单轴压缩应力下受剪切产生，本文基于低氟烧结矿物质组成，导出了基体抗压强度与烧结矿物质组成的关系式，由此得出，基体抗压强度受磁铁矿影响不大，而受铁酸钙影响较为显著。

The study has shown that MgO has different rules on sinter reducibility at 850℃ and 1220℃, i.e.,it promotes reducibility of sinter at 850℃ and restrains sinter reduction at 1220℃.

研究表明，MgO对烧结产物还原性的影响，在850℃和1220℃显示出不同的规律，低温下抑制铁氧化物的还原，高温下有利于还原性能的改善。

Research show titanomagnetite with fine grain high magnetic coercitive force is mian mineralogy of binding sinter mix,and magnetic force between sinter mix and roughened surface improve to bind sinter mix on the sifting bar.

研究表明：高矫顽力、细粒级的钛磁铁矿是粘结物料的主要矿相，它们与粗糙表面的筛杆之间的磁相互作用使粘结程度日益加重。

This thesis has systematically studies the microstructure of the sinter bearing fluorine of different compositions and in different sintering condition.(1) The main units of the Low Fluorine Sinter are magnetite、hematite、 SFCA、larnite、glass and pore. The cuspidine doesn't form for the low content fluorine, and the fluorine is in glass; Sinter basicity dominates the forming of the larnite and SFCA, when basicity is between 1. 72 and 1. 96, there are more larnites in the binder phase, and when the basicity is biger than 1. 96, there are more SFCA in the binder phase; the hematite appears like magnetite and usually is around pore.

为此，本文对不同组成、不同烧结条件的烧结矿样品进行了系统的显微分析和研究，其主要内容包括：(1)构成低氟烧结矿的主要组元有磁铁矿、赤铁矿、铁酸钙、硅酸二钙、玻璃体和气孔，由于含氟量的降低，枪晶石等含氟矿物并未形成，氟分布在后期凝固的玻璃体中，其中硅酸二钙和铁酸钙受碱度影响较大，硅酸二钙在碱度为1.72～1.96范围内形成较多，铁酸钙在碱度大于1.96含量增多，赤铁矿呈磁铁矿假象，多分布在气孔周围，各组元的生成顺序为：磁铁矿—硅酸二钙—铁酸钙—玻璃体。

Temperature field in the sinter process of magnetic ferrite was numerically simulated by using finite element method. Temperature distribution of workpiece during the sinter process is concluded, where it indicates different sinter stage and different diathermanous mode. Also critical temperature is gained, it differentiates between low temperature stage mainly with convection and high temperature stage mainly with radiation.

利用有限元分析法对永磁铁氧体材料烧结过程温度场进行了数值模拟研究，得出铁氧体磁瓦在烧结过程的不同传热方式下、不同烧结阶段的温度分布规律，得出了烧结过程对流传热为主的低温阶段与辐射传热为主的高温阶段的分界温度。

The results show that insufflating 10～20mL MgCI2 Solution of 1.0 %～3.5% concentrations to 500g sinter can reduce the RDI of the sinter observably and have no influence on RI, and the integrative best effect of MgCI2 Solution is that the concentration is 2.5%, the amount of insufflations is 10mL and the RDI of the sinter is reduced from 36% to 4.4%.

结果表明：每500g烧结矿喷洒10～20mL浓度为1.0%～3.5%的MgCI2溶液，能显著降低烧结矿的RDI，且还原度不受影响，以500g烧结矿喷洒浓度为2.5%的MgCI2溶液10mL综合效果最佳，可使烧结矿的RDI从36%降至4.4%。

The hybrid pelletized sinter process can greatly decrease energy consumption and adapt to the agglomeration of iron ore fines. The hybrid pelletized sinter has the macrostructure and the physical properties similar to sinter and the good metallurgical properties similar to pellet.

混合球团烧结工艺可以大幅度地降低能耗并能适应细磨铁精矿的造块、成品块矿具有烧结矿的宏观结构和物理性能，同时保持了球团矿良好的各项冶金性能。

The preventive measures for the harmful defects of alkali metals are as follows: 1, reducing the alkali metals content in the raw materials; 2, increasing the MgO content of the sinter , decreasing the basicity of slag , decreasing the Si content of the pig iron, increasing relative slag volume; 3 , introducing prereduced ore pellets or partly reducted sinter; 4increasing the ability of coke resisting alkali metals; 5, using refractories that have the ability of resisting corrasion of alkali metals; 6 , cleaning the blast furnace periodically. The above recommendations are necessary for decreasing the circulation and accumulation of alkali metals effectively in blast furnace, reducing the harmful influence of alkali metals on blast furnace, increasing the smelting intensity, decreasing the coke rate, improving the gas permeability.

基于碱金属对高炉冶炼的上述危害，本文结合湘钢高炉的实际生产情况，通过理论分析、计算以及其他钢厂防治碱害的经验，提出防治高炉碱害的措施：1、减少入炉原、燃料的碱金属含量；2、提高烧结矿中的MgO含量、降低炉渣碱度、降低生铁含硅量、适当增加渣量；3、采用预还原的金属化球团或部分还原的烧结矿；4、提高焦炭的抗碱能力；5采用抗碱侵蚀的耐火材料；6、周期性性洗炉，以有效地减少碱金属在高炉内的循环富集，降低碱金属对高炉的危害，提高高炉的冶炼强度，降低焦比，改善高炉透气性。

Through the research, we found that the appropriate readjustment India ore and the Yangchun ore allocated proportion, uses the iron material match level 4 to carry on sinter under the unchanged iron material and craft condition, produces the much calcium ferrite and fayalite, obtains the melting corrosion structure and the granular structure as primarily sinter which may enhance the strength.

凡在烧结时能产生较多的液相，冷却时不是形成结晶较差的玻璃质，而是形成充分结晶的针状或树枝状、棒状铁酸钙；磁铁矿不是以块状孤立存在，而是被粘结相交织固结成熔蚀结构、粒状结构或共晶结构；气孔较少，且分布均匀；粒度较细；组织结构均匀的烧结矿均能提高质量。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。