查询词典 carburized

Hydrogen embrittlement fracture of 20CrMnMo steel center block carburized was analyzed in this paper.

对中心楔块渗碳导致的氢脆断裂现象进行了分析研究。

In this thesis a mathematical model referring to the relationship between the case depth and carbon distribution by using a nonlinear regression. The electromagnetic characteristics in carburized materials were discussed. Results show that inductivity and magnetic inductivity depend on the carbon concentration in carburized layer. A relationship model between the electric, magnetic inductivity and carbon concentration was built.

结合渗碳材料的碳浓度和组织状态对电导率和磁导率的影响规律，建立了渗碳材料电导率和磁导率与碳浓度的关系模型，利用该模型及渗碳层深度和碳浓度分布关系的数学模型，建立了渗碳层深度与渗层电磁性能的关系，为实现对渗碳层深度的无损检测提供了可靠的理论与实验基础。

The Parabola Hypothesis corrected by the authors. The authors have used this method on computer to get the bending fatigue test data of carburized and quenched gears and the fatigue limiting stress distribution. Furthermore, the...

然后对渗碳淬火钢齿轮的弯曲疲劳试验数据用JFKC法进行计算，得到了它的疲劳极限应力分布，并对比其相应的成组试验法测定的疲劳极限应力分布进行了分析和讨论。

Through metallographic examination and microanalysis, it can be observed that at the weld interface of the joints there is a decarbonized layer on the S25C steel side and a carburized layer on the SUS405 steel side.

金相及显微分析可见，在焊接接头的结合界面上，S25C钢一侧存在脱碳层，SUS405钢一侧存在增碳层，这是造成接头组织分布及硬度分布不均匀的主要原因。

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。

The contact fatigue strength was measured after the 20CrNi2Mo and 15CrNi6 steel used asdragging gear on quasi high speed locomotive was carburized and quenched as well as peened,com-pared with that of 20CrMnMo steel.The results shown that the contact fatigue strength limits of thesethree types of steel carburized and quenched essentially same,and the contact fatigue strength Iimit hasbeen increased by 5 porcent after peening,and that the failure appoarances of all contact fatiguespecimen were delamination ...

对20CRrNi2Mo、15CrNi6及20CrMnMo渗碳淬火齿轮及15CrNi6渗碳淬火＋喷丸处理齿轮进行了弯曲疲劳试验，介绍了齿轮试件的设计与加工、试验装置与夹具、试验方法及试验数据的统计处理，试验结果表明，20CrNi2Mo和15CrNi6渗碳淬火齿轮在R＝0.99时的σFlim分别为530MPa和375MPa，与20CrMnMo渗碳淬火齿轮相比，弯曲疲劳强度分别提高80％和27％。15CrNi6经渗碳淬火＋喷丸处理齿轮在R＝0.99时的σFlim为490MPa，比未喷丸处理者提高30％。

It can make carburized layer on titanium alloys by electrospark deposition, and the carburized depth is about 40～50 μm.

用电火花渗碳技术可在钛合金表面形成一层40～50μm厚的渗碳层，分析显示渗碳层中主要是由石墨电极与基体反应生成的TiC相组成。

So people make great efforts to inspect the carburized materials in NDT perfectly. In this thesis, the characteristics of carburized layer and ECT system were studied by numeric simulation and finite element method.

本文运用数值模拟、涡流检测和有限元分析等方法对材料的渗碳层特性及其无损检测问题进行了系统研究，为渗碳层深度的涡流检测及材料表面改性质量的无损评价提供了重要的理论依据。

The microstructure of the carburized layer was studied by optical microscopy and transmission electron microscopy,and the hardness distribution along the depth of carburized ...

利用光学显微镜、透射电镜以及显微硬度计对热处理后19Mn2Cr2NiMoAl钢渗碳层的组织和硬度进行分析研究。

The hardness of carburized and subsequently quenched parts will be dependent on the carbon concentration in carburized case. Based on experimental data, variation of the

根据试验数据建立了马氏体含碳量与硬度的函数关系，预测了圆柱形工件渗碳后的碳浓度布和淬火后的硬度，硬度的预测结果与试验结果相吻合。

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。