钢化

For the sake of solving the problem of great rotary inertia and forged steel rockerarms bad wear-resisting property in the engine of Xia Li cars with modelTJ370Q TJ376Q, we utilize the assembly theory of creative engineeringmethodology to respectively make the aluminum alloy materials and siliconnitride engineering ceramics as base stock of rocker arm and cabochon glut. Inthis way, the goodness of these two kinds of materials are fully strengthened. Forthe new rocker arms, their comprehensive property are enhanced and the cost ofmanufacture is lower than before.

为了解决夏利轿车发动机TJ370Q和TJ376Q中所装配的锻钢镀硬铬气门摇臂所存在的转动惯量大、圆弧面耐磨性差的问题，项目研制中运用创造性方法学中的"组合"原理，有针对性地选用铝合金和氮化硅陶瓷这两种具有不同性能特点的材料分别作为摇臂基体和工作圆弧面镶块，充分发挥两种材料各自不同的性能优势，从而达到提高产品综合性能，降低制造成本的目的。

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。

For 0.7%Cu steel, aging at 450℃ for 90 minutes, a great deal of Nb particles precipitated in matrix, and aging at 650℃ for 90minute, these precipitates started to coarsen.

含铜为0.74％的试验钢在450℃90分钟时效时，有大量细小的Nb粒子析出，在650℃90分钟时效时，粒子发生粗化。

Mainly use in the cold-roll strip steel, wire rod, tray-pipe, high alloy bow wave booster compressor casting, exhaust pipe, thin steel plate, copper, aluminum and so on colored and so on metal plate, belt, alloy accessory, chain bar, welding wire, standard piece, silicon steel plate, tool, spheroidizing

主要用于冷轧带钢、盘元、盘管、高合金涡流增压机铸件、排气管、薄板、铜、铝等有色金属板、带、合金零件、链条、焊丝、标准件、硅钢片、工具、球化退火、机械等行业的退火处理。

The heat treatment method integrating isothermal annealing,quench hot and double tempering was made on the cold-work die steel XW-42 for its strengthening and toughening .

采用等温退火+高温淬火+二次回火工艺对冷作模具钢XW-42进行强韧化处理，提高了模具强度、塑性及韧性，此工艺应用于某型号表尺座的成形，模具使用寿命由原来的2400件提高到7300件，极大地降低了生产成本。

Time are tested under different kinds of stress for nitrided and un-nitrided specimens made from 35CrMo steel. The testing time ranges from 70 to 80 hours. The following equations are regressed from the tested curves: Un-nitrided specimens:〓 Nitrided specimens:〓 The above equations are consistent with the first stage theory for creep.

为此本文通过实验，测试了35CrMo钢渗氮和未渗氮两种试样在500℃时不同应力情况下的应变随时间的变化曲线，实验时间为70-80小时，将测得的曲线回归出以下方程：未渗氮样品：〓渗氮样品：〓以上方程符合蠕变的第一阶段陈化理论公式。

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。

Before melte steel, crucible best in furnace to heat red.

化钢之前坩埚最好放在茂福炉内加热至红。

The company has a large number of engineers engaged in die-casting industry, designers; Inc. After years of efforts to develop and practice a series of magnesium alloy crucible, crucible, gooseneck, steel bell, radio Tsui body, shot Tsui Tau, dosing pumps and protection of magnesium alloy gas sulfur hexafluoride, covering agents,¤agent.

公司拥有大批从事压铸行业的高级工程师、设计师；公司经过多年的努力和实践开发出系列镁合金熔炉、坩埚、鹅颈、钢铃、射咀身、射咀头、定量泵及镁合金保护气六氟化硫、覆盖剂、脱膜剂等。

The steel structure of plamsholding dagoba for Famen Temple is constructed with steel Q345GTC. The construction period is necessity through the winter, even from ovember of 2007 to February of 2008. Negative temperature of environment exerts direct influence to welding quality. If the droping speed of temperature is quick, the metal will be brittle, also, the possibility of crack produced at weld is increased.

摘要］ 法门寺合十舍利塔钢骨结构工程钢骨采用Q345GJC钢，施工经过冬季阶段（2007年11月～2008年2月），由于冬季施工的负温环境会使焊接质量受到直接影响，降温速度加快使焊缝金属脆化，增加裂纹产生的可能性，控制不好会造成焊接质量的下降甚至造成安全隐患。

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