渗碳

The mathematical model of gas carburization is mathematical description of all kinds of physical and chemical phenomena in the process of carburization.

气体渗碳数学模型是渗碳过程中各种物理、化学现象的数学描述。

Based on this result, and combined with mathematical models for describing the quenching process, the temperature, microstructure and stress field in quenching process were simulated by the FDM, the variation of microstructure and stress in quenching process was analyzed, and effect of the carburization on them was also analyzed.

基于渗碳模拟结果，根据描述淬火过程的数学模型，利用有限元法对试样淬火过程的温度场、组织场及应力场进行了数值模拟，分析了淬火过程中组织和内应力变化，及渗碳过程对淬火过程组织及应力变化的影响。

It has also been studied that the influence of the cementite formation in catalyst Pt-Fe/C,as it is heated. In the end,the adsorptive oxygen on catalyst surface has been evaluated.

本文对铂铁合金催化剂中形成渗碳体的情况亦做了初步研究，分析了渗碳体的形成对催化剂性质的影响。

The furnace gas is applied with the ideal gas state equation.

为了改善大型渗碳炉的均匀性，本文应用数值计算方法研究圆筒形井式渗碳炉炉膛内的流动传热过程，假设炉内流场满足定常、不可压缩轴对称条件，炉内气体可以应用理想气体状态方程。

According to the heat treatment process of gear ring,as well as on account of the finite element mathematical model for carburizing process,the carbon potential numerical simulation of carburizing process for gear ring has been performed.

根据齿圈的热处理工艺，基于渗碳过程的有限元数学模型，对齿圈的变碳势渗碳过程进行了数值模拟。

Carburizer is a nonlinear system with time variation and distributed parameters and it is difficult to describe its characteristics by precise mathematic model.

文章摘要：渗碳炉是一个非线性、时变和分布参数的系统，用精确的数学模型表示其特性较为困难，将带有自整定功能的模糊控制算法引入传统的渗碳炉温度控制系统。

At the same time the carburized layer depth is predicted by the virtue of the relationship model forementioned.

在建立工件渗碳层深度和涡流检测信号之间关系的基础上，对渗碳层深度进行了模拟计算。

Carbonitriding, sometimes known as dry cyaniding or nicarbing, is a case-hardening process in which the steel is held at a temperture above the critical range in a gaseous atmosphere from which it absorbs carbon and nitrogen.

碳氮共渗碳氮共渗，有时称为干氰化或nicarbing ，就是一个例子硬化过程中，钢铁是在温度高于临界各种气体的气氛它吸收碳和氮。

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。

Science and Technology, Nanjing 210094, JiangsuAbstract : The carbon gradient of carburized case of parts can be predicted by using the finite difference method.

摘 要：零件渗碳后渗层的碳浓度分布可以用有限差分法预测，而碳浓度的高低决定了工件淬火后的硬度。

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。