查询词典 carburization

In the meantime, the two kinds of processes that reduce hardness on thread:induction tempering and localized anti-carburization are analyzed. It is concluded that induction tempering is an effective way to avoid delayed fracture on pitman shaft thread.

同时，对目前普遍采用的感应回火和局部防渗碳保护工艺的特点进行了分析，认为感应回火能同时有效地降低表面和心部硬度，是预防摇臂轴螺纹延迟断裂的有效方法。

Does not fear the fire: The lumber has the carbonization effect, when meets the fire, the outer surface of wood surface will form the carburization zone, its low conductivity may prevent the flame to spread inward effectively, thus guaranteed that the entire syntagma is not destroyed for a long time.

不怕火灾：木材具炭化效应，遇火灾时，木表面会形成炭化层，其低传导性可有效阻止火焰向内蔓延，从而保证整个结构体在很长时间内不受破坏。

Because the fireproof tape is wrapped outside of cable cover, when the fire accident happens, it can form the carburization layer to block oxygen and heat, which stops the burning of cable.

由于自粘性防火包带用于绕包在电缆护套外表面，当火灾发生时，能迅速形成阻氧隔热的炭化层，阻止了电缆的燃烧。

Major gas carburizing for steel parts used, the use of ultra-lining and the international advanced energy-saving vacuum sealed fan, the furnace pressure to increase without any leakage, temperature uniformity, warming fast, insulation, and an atmosphere of carbon potential uniform workpiece carburizing speed, uniform layer, the seriesPit Gas Carburizing Furnace greatly improved the productivity and quality of carburization.

主要供钢制零件气体渗碳用，由于采用超节能炉衬和国际先进的真空密封风机，使炉压提高，无任何漏气，炉温均匀，升温快，保温好，碳势气氛均匀，工件渗碳速度加快，渗层均匀，本系列井式气体渗碳电炉大大提高了生产效率和渗碳质量。

The effects of the spray-drying process of the ammonium paratungstate and the carburization temperature on the formation of the precusor and WC powder were investigated.

采用喷雾干燥-固定床法制备碳化钨粉末，研究了喷雾干燥和碳化反应温度对制备偏钨酸铵前驱体以及碳化钨的影响，前驱体粉末呈现均匀的球状形态，平均粒径为10~20μm，喷雾温度对影响粒径大小和分布影响小；400℃的进口温度下进行喷雾干燥，喷雾粉末仍然保持偏钨酸铵原来的基本组成不发生分解。

The results indicate that the extent of reduction and carburization was intensified by prolonging the reduction duration or by increasing the reduction temperature. The catalyst activity and stability was enhanced with the reduction at 270℃ compared with those reduced at lower temperature (240℃) or unreduced samples.

结果表明，在240℃延长还原时间或将还原温度升高到270℃均有利于催化剂的还原，270℃还原的催化剂的活性和稳定性明显高于未还原和240℃还原的催化剂，催化剂的运行稳定性与催化剂在反应过程中的流失量有密切关系。

And comparison of their most stable surfaces with the body-centered cubic Fe shows that these carbide surfaces have lower surface energies than the most stable (110) surface of body-centered cubic Fe, indicating that the surface thermodynamics favor carburization at Fe surfaces.

另外，与面心立方铁最稳定表面(110)相比，Fe2C、Fe3C及Fe4C晶体最稳定表面具有较低的表面能，表明铁表面碳化在热力学上是有利的。

Ultrafine WC powders were prepared with the mixing of ultrafine WO_3 powders with carbon black by continous direct carburization process.

将WO_3超细粉体与碳黑混合，采用一步还原碳化法制备超细WC粉体。

It is shown that the formation process of iron carbide converted from hematite using H〓-CH〓 mixtures consists of several steps: reduction of iron ore, cracking of methane, and carburization of metallic iron.

试验发现赤铁矿与H〓-CH〓气反应制备碳化铁的过程是分步完成的，第一步是赤铁矿的还原，第二步是甲烷的裂解，然后是金属铁的碳化。

Possible surface carburization may be detected optically in spheroidized materials by observation of surface pearlite or an increased number of carbide spheroids.

通过观察球光体表面或碳化物的增加的数目在球化处理材料方面，在视力上发现可能的表面渗碳。

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。