钢化

The property of no film, micro-arc oxidation film and chromate film influenced the corrosion of joint samples which was analyzed in same corrosive conditions by calculate the corrosion effects and observe macro-photograph micro-photograph. The corrosive regularity influenced by corrosive condition factors and the corrosion resistance of different thickness of micro-arc oxidation film also be compared.

采用减重法计算连接腐蚀效应并观察试样表面的腐蚀宏观及微观形貌，对比分析了无表面处理、铬化处理及微弧氧化处理在相同盐雾腐蚀条件下对减小镁合金-钢连接腐蚀作用的差异性以及盐雾腐蚀条件参数对镁合金-钢连接腐蚀的影响规律。

If titanium content is less than 30ppm and nitrogen content is less than 60ppm, the inclusion precipitated below temperature of solidus has little effect on the property owing to refine grain.

将钢中的钛含量降到30ppm以下，氮含量降到60ppm，其氮化钛的析出温度降到固相线以下，析出的夹杂尺寸很小，对钢的性能影响较小，甚至有益，因为它能细化晶粒。

After several practical problems are resolved,the relation between contents of S,Si and Al has been disclosed.The ratio of Ca to Alin in steel is 1.26∶1 after calcium treatment,the nozzle clogging does not happen and the consumption of calcium is reduced.The recovery factor fluctuation of boron are 64% and ±5×10-6, respectively.

通过硼微合金化若干工艺问题的解决和工艺优化，明确了钢水硫含量、增硅、铝控制之间的内在关系；使SPHC钢成分合格的同时，实现硼收得率达到64%，硼的质量分数波动±5×10-6；钙处理达到钢水中w∶w为1.26∶1时，确保水口浇注顺利，同时节省钙线用量。

The microstructure and mechanical properties of the testing steels have also been studied contrastively.

实验室试制了低碳Nb、V微合金化含硼冷镦钢，并对试验钢的组织和性能进行了对比研究。

On the other hand, the creep fatigue interaction tends to embrittle the steel, which depends on the original toughness value of the steel.

此外，低合金Cr-Mo-V钢经蠕变一疲劳交互作用后有脆化倾向，其脆性程度取决于钢的原始韧性值。

As final heat-treatment, normalizing can fine the grains, uniform the organization, reduce the ferrite in hypoeutectoid steel, increase pearlite and also fine the grains, so the strength, hardness and also toughness to be increased.

作为最终热处理，正火可以细化晶粒，使组织均匀化，减少亚共析钢中铁素体含量，使珠光体含量增多并细化，从而提高钢的强度、硬度和韧性。

Through comparing and analyzing the metallurgical effects, proper addition quantity of the modifier was 80 kg per heat. The experiment results showed that the modifier smelted the slag fast and reduced the oxidizability of the top-slag rapidly. Comparing with the original process, the average content of aluminum in the steel was increased by 0.06%, desulphurization ratio was increased by 89.25% and TFe was reduced by 0.6%, then stabilizing the production of aluminum containing steel.

试验中用改质剂代替原工艺中的精炼剂（Q235C钢种），通过对改质剂不同加入量的冶金效果进行对比分析，确定的改质剂加入量为每炉80 kg，试验表明，改质剂化渣快，能迅速降低顶渣的氧化性，与原工艺相比，钢中平均铝含量提高0.06%，脱硫率提高89.25%，渣中全铁降低0.6%，稳定了含铝钢的生产。

The method is to make steel work in safety term during toughening gradually.

通过对上述曲线的分析，得到了避免钢高温脆裂的方法，该方法就是使钢在逐渐韧化的安全期内服役。

For example, use the diamond grinding tool to process the hard alloy as well as the ceramics, the agate, the optical glass, the semiconducting material, the stone material, the concretes and so on nonmetallic material and the non-ferrous metal and so on; use the cubic boron nitride grinding tool to Process the tool steel, the molding tool steel, the stainless steel, the heat-resisting alloy and so on, especially to processes high vanadium high-speed steel, may obtain satisfied processing effect.

例如，用金刚石磨具加工硬质合金以及陶瓷、玛瑙、光学玻璃、半导体材料、石材、混凝土等非金属材料和有色金属等；用立方氮化硼磨具加工工具钢、模具钢、不锈钢、耐热合金等，特别是加工高钒高速钢等黑色金属，均可获得满意的加工效果。

Meanwhile, wire-feeding velocity of the core wire was confirmed through applying numerical calculation, which was verified with actual wire-feeding velocity used in production.

从传热传质理论出发研究喂线球化处理过程中芯线钢带在铁水中的溶解过程，充分考虑了铁水温度、含碳量和镁合金芯剂状态对钢带溶解的影响，给出相应的数学模型，采用数值计算的方法确定了芯线的喂线速度，并用生产中实际应用的喂线速度进行了验证，结果表明，计算结果与实际喂线速度基本吻合。

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