渗碳

In order to obtain ideal carbon concentration distribution, new technology of"Attenuating Carburizing"was presented.

采用模拟方法，详细讨论了各种因素对刚玉流动粒子炉渗碳浓度场的影响。

All of the parts made from high quality alloyed steel, and processed through carbonizing and quenching or improving quality.

另部件全部采用优质合金钢制造，并经渗碳淬火或调质处理具有承载能力强及使用寿命长等特点。

Changing microstructure and substructure,microalloying,carbonizing treatment and casting are proposed to solve following problems:low plastic property under room temperature,low oxidation resistance over 850 ℃ temperature and difficult machining.

提出了采用改变显微组织和亚结构、微合金化和渗碳处理、铸造等手段，解决其存在的室温塑性较低、850℃以上抗氧化能力不足和难加工等问题。

The mechanical properties, fatigue characteristics, welding properties, carbonizing characteristics and wear resistance of meta-bainite steel s are showed and discussed.

论述了准贝氏体钢及使用性能的几个问题，如力学性能、疲劳性能、焊接性能、渗碳性能、耐磨性能等。

Through analyzing and testing the process of carbonizing pump barrel ,the relationship between induction hardening parampters,hole size and body hardness was summarized.

通过对渗碳泵筒加工工艺的分析和试验，总结出中频感应淬火工艺参数和工件内孔尺寸、基体硬度之间的对应关系，为泵筒生产时内孔尺寸精珩余量的确定提供了依据。

The results show that the cyanided samples have lower A_1 temperatures, considerablyhigher M_s points and shorter incubation periods in both the pearlitic and bainitic regionsthan the carburized samples.

实验结果指出：氰化试样较渗碳试样具有较低的A_1温度、高得多的M_H点、和过冷奥氏体在珠光体与异茵体区间转变时较短的孕育期。

It was reheated to 780℃ and oil quenched for tempering at low temperature (200℃).

牙轮的材料为20Ni4Mo，热处理工艺为气体渗碳再进行780℃淬火＋低温回火。

Bull gear and pinion gear are mounted in lower casing via bearing seat.

大小齿轮均采用渗碳淬火钢进行制造，并采用硬齿面加工方法加工而成，强度很高。小伞齿轮和大伞齿轮均通过轴承座装入下壳体中，两轴承座法兰下设有调整垫，用于调整齿轮副接触区的位置和齿侧间隙。

Based on this model, the method for calculating the coefficient of carbon transfer for different steels was given.

利用界面反应的第三类边界条件，推导出了单位面积渗碳增重动力学数学模型。

In this thesis,the basic aspects about eddy current testing of Carburized layer depth were studied through theory calculation and experiment analysis.

本文对渗碳层深度的涡流检测问题进行了理论计算和实验分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。