钢

The results show that these semi-high speed steels can be hardened remarkably by secondary hardening to meet the hardness requirements of cold rolling. The secondary hardness of the tested steels is increased with the contents of alloying elements such as Mo, V, Si and changed with quenching temperature to show two peaks.

研究结果表明，新型半高速钢有显著的二次硬化效应，能满足冷轧工作辊的硬度要求；随Mo、V和Si等合金元素含量升高钢的二次硬度升高，随淬火温度升高钢的二次硬度出现两次峰值。

Discover the 3Cr23Ni8Mn3MoN organizes of indoor temperature after passing by the heat temperature , the mechanics function of the heat temperature bottom and the anti-corrosion the function is better than the 4Crl4Nil4W2Mo and 5Cr21Mn9Ni4N.

研究发现3Cr23Ni8Mn3MoN钢经热处理处理后的显微组织、常温及高温下的力学性能和钢的抗燃气腐蚀性能均优于4Cr14Ni14W2Mo及5Cr21Mn9Ni4N钢，能较好地满足排气阀的性能要求。

Yantai Hyde construction machinery factory occupies 60,000 square meters, construction area of 40,000 square meters, with 5,000 square meters of modern production of steel structure of the workshop, a CNC cutting, Auto Group legislature, automatic welding and alignment, such as ultrasonic testing Composed of special steel structure production lines, with the domestic industry with a unique large-scale surface treatment equipment Shotblast machine and its supporting mechanical processing workshops, casting, casting workshop, the tower crane workshop, digging bucket shop, pull the plant and paint shop And so on.

烟台海德建筑工程机械厂占地60000平方米，建筑面积40000余平方米，拥有5000平方米的现代化生产钢结构的车间，采用数控切割，自动组立，自动焊接及校直，超声波检测等组成的专用钢结构生产线，拥有国内同行业中独特的大型表面处理设备抛丸机及与其配套的机械加工车间，铸造、铸钢车间、塔机车间、挖斗车间、扳金车间及喷漆车间等。

An important development is calcium-deoxidized steels, in which oxide flakes of calcium silicates are formed.

脱氧钙钢一个重要的发展是脱氧钙钢，在脱氧钙钢中矽酸钙盐中的氧化物片的形成。

Reducing afterblowing and using the carburant with low nitrogen content are important measure. The kinetics of nitrogen removal from liquid steel under vacuum with reaction between carbon and oxygen was studied on the multi-function induction furnace. The following conclusions were obtained by experiments: The nitrogen removal was obtained by the nitrogen transfer through the liquid steel diffusion layer at 67Pa and 110Pa pressure, and by the gas-liquid surface chemical reaction at 2000P.

结果表明：真空度对脱氮机理有影响，67Pa～110Pa时脱氮为一级反应，2000Pa时脱氮为二级反应，1340Pa时为混合控制；即使在。1％的条件下，碳氧反应亦可显著提高脱氮速度常数促进深脱氮，在RH内通过加强碳氧反应来提高脱氮率理论上是可行的；当钢液内存在内生或外来固态粒子时，有利于钢液中CO及N〓气泡的形成及排除，这时气泡内p〓≈0，有可能使钢液中氮含量低干与系统真空度平衡的氮含量。

If there was too much cerium segregated on the grain boundaries, it will considerably decrease the impact toughness of the steels.

钢中的铈碳化物对钢的韧性和塑性都有改善作用，对钢的屈服点没有发现显著的影响。

The Company under the two pillars of industry: the production of flat steel main rolling mill, two series of square steel, model range, different models can be set rolling; galvanizing plant is divided into: cold plating,; main varieties of flat iron, round bar, angle iron, channel steel, wire rod, hot galvanized flat steel, and galvanized external processing business.

本公司下属两大支柱产业：轧钢厂主要生产扁钢、方钢两大系列，型号齐全，异型号可订轧；镀锌厂分为：冷镀、热镀；主要品种扁铁、圆钢、角铁、槽钢、盘条、热镀锌扁钢等，并对外加工镀锌业务。

Creep properties of BB503 steel, STE355 steel and SM41CN steel are studied by creep test. With the creep test data the surplus-life prediction of BOF shell has been completed by using"θ-Concept Project"method.

对宝钢自产BB503钢、STE355钢以及2#转炉现役炉壳SM41CN钢的蠕变特性进行了试验研究，在对蠕变数据外推的基础上，使用"θ—Concept"法对宝钢2#转炉现役炉壳的残余寿命进行了预测分析。

As one of the first manufacturers of bearing steel ring in China, the company is mainly engaged in such products as bearing steel ring for cotton spinning, nut, retaining ring, cotter pin, closing ring and flat pad etc.

经试验证明，"衰退钢领"内跑道的几何形态无显著变化，表面具备足够硬度，精抛光后（钢领可达到▽10-▽11级），上车使用效果非常好，可连续抛光使用能达到钢领使用寿命3-5年以上。

So, using magnesia and calcia crucible in VIF respectively, the experiments on deep deoxidation by carbon and the phenomenon of oxygen contamination from crucible materials in the molten steel under some temperature and vacuity and oxygen content of the molten steel were made and it were found that properly low melting temperature and vacuity helped to lighten and even avoid oxygen contamination from crucible material and the refining effect of final oxygen content of 5×10-4% in the molten steel was achieved using calcia crucible with better resistance to thermal shock under higher vacuity.

为此，分别采用MgO炉衬与CaO炉衬，在真空感应炉中对钢液用碳进行深脱氧和炉衬供氧现象实验研究，发现：(1)在适当低的熔炼温度和真空度下，可以减轻甚至避免炉衬热分解向钢液供氧；(2)采用热稳定性优越的CaO炉衬，在较高的真空度下可达到钢液最终全氧含量低于5×10-4%的精炼效果。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了