渗碳作用

The effect of rare-earth element on carburization of 20MnTiB steel has been studied.

本文对稀土在20MnTiB钢渗碳过程中的作用进行了探讨。

By analysis of the cracking products, the effects of the coking-inhibitors on the cracking reaction and the cementite phenomenon of the metal were investigated.

结合燃料裂解产物的分析结果，考察了结焦抑制剂对吸热型碳氢燃料裂解反应历程的影响，以及抑制剂对金属挂片上结焦渗碳现象的缓解作用。

While the contents of the dusulfurration flyash of the fourth fields is less than 20%, the desulfuration flyash of this plant can be as the materials mixed in M5 cement mortar. Because of the loose, large specific surface and having more remainders of unburnt coal, the flyash can be used as sorbent to dealing with the penetrating fluid.

由于粉煤灰在燃烧以后，表面疏松多孔，比表面积很大，有一定的吸附性能，同时粉煤灰中还含有一定量的未燃尽碳，其作用相当于平时用作吸附剂的活性碳，这也使粉煤灰具有很强的吸附性，所以本文设计了粉煤灰处理垃圾渗滤液的实验。

According to the microalloying and strengthening and toughening principles of steel,a theoretical calculation method and optimum alloying design to determine titanium content in carbonizing steel were proposed.

根据钢铁材料的微合金化原理和强韧化原理，对广泛使用的含钛渗碳钢的钛含量进行了理论计算分析和优化设计，结果表明，适当降低钛含量，不影响其在渗碳过程中阻止奥氏体晶粒长大的作用，但可有效地减少或消除含钛渗碳钢中的液析氮化钛，从而提高钢材的力学性能。

Used for steel products for carburized effect of carbon compounds called carburizing agent.

用来对钢制品进行渗碳作用的含碳混合物称为渗碳剂。

The S entering into pellet with concentrate is pyrite, with coal powder are iron sulfide, sulphate and organic sulphur, when reducing, S existing in pyrite, iron sulfide and organic sulfur come into gas phase, then been absorbed by fresh Fe and liberate out of pellet, combined with CaO existing in outside of the pellet to form CaS finally, sulphate will remain in DRI.

当还原温度高于在铁碳相图中的最低液相线温度1147~1153℃时，渗碳作用导致DRI外壳熔化，这层致密的熔融外壳起到热态直接还原铁的防氧化作用。低于这个温度将有助于还原和脱硫。

Every tube on the furnace cover has three water cooled jackets which can make the water in the tube rapidly cooled. The role of muffle tank is to maintain the furnace pressure and and ensure the carburizing to work well, it is made of heat-resistant steel,.Carburizing electric furnace is equipped with cooling barrels.It is used to store the parts after treatment, sand sealed grooved are fixed on the barrel covers .

炉盖上的三个管子都有水冷套，以便进入三个管子中的气体快速冷却，马弗罐的作用是维护炉压，保证渗碳的正常进行，它由耐热钢制成，渗碳电炉配有冷却桶，用来存放处理后的零件，捅盖处设有砂封槽。

Lid on the three setsof water-cooled tubes have to enter the three tubes of gas rapid cooling,the role of muffle tank furnace pressure is to safeguard and ensure the normal carburizing,itmade fromheat-resistant steel,seepage carbon electric furnace equi-pped with cooling barrels were used to store the treated p-arts are also provided,sand covered up the closure groove.

炉盖上的三个管子都有水冷套，以便进入三个管子中的气体快速冷却，马弗罐的作用是维护炉压，保证渗碳的正常进行，它由耐热钢制成，渗碳电炉配有冷却桶，用来存放处理后的零件，捅盖处设有砂封槽。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。