烧结性

The results showed that the composite batcher drip nozzle consisting of ceramics drip nozzle and plug had high strength, excellent toughness, abrasion resistance and corrosion resistance, and long service life. It was not easy to fracture while replacing. The new batcher drip nozzle could increase the productivity of production line and decrease the production cost of metal grains when it was used to cast metal grains.

结果表明，由烧结陶瓷加工而成的滴嘴本体及与滴嘴本体配合的塞子两部分构成的组合式定量器滴嘴，强度高，韧性、耐磨性和耐蚀性好，使用寿命长，更换时不断裂，可提高铸造金属颗粒生产线的作业率，降低金属颗粒加工成本。

Machinability of P/M sintered steels with manganese sulfide and calcium fluoride additives is investigated and analyzed by experiments of sintering and cutting on milling machine.

通过烧结和在铣床上切削加工的实验，研究了添加硫化锰和氟化钙的烧结钢的加工性。

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。

By using both the hydrogen decrepitation and double-alloy processes to avoid soft magnetic Laves phase,we prepared N35AH sintered Nd-Fe-B permanent magnet with ultra-high coercivity,which can be used at temperature up to 240℃.

现在汽车驱动电机、水力风力发电机、压缩机电机、船舶用大功率推进电机等领域对高使用温度烧结Nd-Fe-B磁体的需求日益增长，所以提高烧结材料的耐热性成为当今钕铁硼行业的主要研究方向之一。

As is now well known,foundry coating is consist of 5 kinds of basic components such as carrier material,refractory fillings, defocculaing aent, binding agent and accessorial addition agent. In which the refractory fillings is its main components that it decides the refractoriness,chemical stability, diathermancy of the coating ,simultaneously it influences also the gas permeability,sinter delaminating property of the coating.

众所周知，铸造涂料是由载体，耐火填料，悬浮剂，粘结剂和辅助添加剂五种基本组分组成，其中耐火填料为主要组分，它决定着涂料的耐火度，化学稳定性，绝热性，对涂料的透气性，烧结剥离性也有重要影响。

As is now well known,foundry coating is consist of 5 kinds of basic components such as carrier material,refractory fillings, defocculaing aent, binding agent and accessorial addition agent. In which the refractory fillings is its main components that it decides the refractoriness,chemical stability, diathermancy of the coating , simultaneously it influences also the gas permeability,sinter delaminating property of the coating.

众所周知，铸造涂料是由载体、耐火填料、悬浮剂、粘结剂和辅助添加剂五种基本成份组成，其中耐火填料为主要组分，它决定着涂料的耐火度、化学稳定性、绝热性，对涂料的透气性、烧结剥离性也有重要影响。

Result reveal that can produce surface volatilize the phenomenon in the process of sintering at 650~750oC.

结果显示烧结温约在650~750℃过程中会产生表面挥发现象，而添加少许的SiO2会有抑制挥发效用，且在添加1wt%SiO2时，观察到其微结构有常晶成长效果，由於液相烧结其晶由5μm左右成长到60μm左右，而在电性方面介电常随著SiO2添加上升而下，而品质因子由原的25000提升至48000测频为7GHz。

The results obtained from the mineragraphy analysis of sintering agglomerates indicate that with 0.03%HPL added, the gas holes of agglomerate becomes smaller so that its strengthen can be improved significantly, and the content of calcium ferrite of good reducibility is increased by 8%-10%.

据矿相分析结果表明，添加0.03％HPL后，烧结矿起气孔变小，使烧结矿强度提高1％左右，并使还原性好的铁酸钙含量增加8％～10％，这有利于高炉冶炼。

As a protective atmosphere for sintering iron base materials, dissociated ammonia is a kind of decarburizing atmospheres.

本文通过热力学分析得出：在烧结过程中H_2与石墨难以形成CH_4，但易从Fe_3C中夺取C；分解氨作为烧结铁基材料的保护气氛是一种脱碳性气氛。

The high temperature metallurgical properties of several burdens for Anyang steel were investigated. The results showed that RIof high basicity sinters was better than others, but the RDI(low temperature reduction degradation index) of it was the highest; the RDI and molten dripping property of pellets and lump ores were well, so we can get rational burden structure by combining sinters for blast furnace.

系统分析了安钢炼铁生产中几种常用炉料的高温冶金性能，结果表明，安钢自产高碱度烧结矿具有较好的还原性，但其低温还原粉化率却是最高的；酸性球团矿及块矿则有着较好的低温还原粉化指数及良好的熔滴性能，能够与高碱度烧结矿搭配形成合理的综合炉料结构，满足高炉冶炼要求。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。