表面硬化的

The part to be case hardened is immersed in a bath of fused sodium cyanide salts at a temperature slightly above the Ac1 range, the duration of soaking depending on the depth of the case.

需表面硬化的零件浸没在略高于 Ac1 温度熔化的氰化钠盐溶液中，浸泡的持续时间取决于硬化层的深度。

This results in what is descriptively known as honeycombing on the surface of the hardened concrete with reduced durability and strength as well as unacceptable surface finish.

这引 起硬化混凝土表面所谓的蜂窝麻面，耐久性和强度降低以及不受欢迎的表面光洁度。

Aim: To evaluate the surface hardness and abrasion resistance of die stone model with the application of a new gypsum surface hardener.

目的：测定涂布超硬石膏表面硬化剂有机硅树脂前后石膏模型的表面硬度和抗磨损性能，为该石膏表面硬化剂的临床应用提供依据。

Surface of plate face was very smooth, unlike rough, pebbly surface of cemented plates, such as U.S.

碳含量被增加到了VC钢的水平以使其容易淬火；加入适量的铜以减少镍的使用量；又加入少量的钼以加强淬火的硬化能力；在无须牺牲VC级别防护性能的情况下，没有采用对浅层装甲使用渗碳（大多数情况下外国的表面硬化处理方式）的工艺。

The surface hardening of 40Cr steel was performed on a surface grinder by transverse feed grinding;the changing trends of microstructure and wear behavior of surface hardened layer were researched.

在平面磨床上采用横向进给磨削方式对40Cr钢进行表面硬化处理，研究了磨削表面硬化层组织与磨损性能的变化趋势。

In a second aspect, this invention provides a surface-mount inductive loop detector including: an inductive loop which is adapted for connection to an external electronic controller device; a protective cover in the form of a substantially inflexible ring having a hardened, bevelled peripheral edge; said ring adapted to accommodate the inductive loop between a mounting surface and a lower surface of the ring and provided with means for fixing the detector to the mounting surface.

在第二方面，本发明提供一种表面安装感应环检测器，包括：感应环，该感应环适用于连接到外部电子控制器设备；保护罩，该保护罩为具有基本上呈柔性的圆环，该圆环具有硬化的、倾斜外周缘；所述圆环适用于容纳位于安装表面和圆环下表面之间的感应环，并设有用于把检测器固定到安装表面的装置。

In the part of grinding surface integrity, the surface integrity of ground superalloy GH4169 such as grinding surface roughness, surface hardening, surface residual stress and metallographical microstructure have been studied.

确定了上述表面完整性指标与磨削参数之间的关系，并根据正交试验建立了磨削表面粗糙度、表面硬化和表面残余应力的经验公式。

The characteristic of machined surface of high speed machining aluminum alloy 7050-T7451 is researched by micrographic experiments and analysis. The formation mechanics of machined metamorphism layer has been analyzed and studied. The dislocation-energy model in machined metamorphism layer was established and applied to explain the micrographic mechanics work-hardening using the thermo-mechanical coupling deformation theory and dislocation theory. The experimental results show that the interaction of high dislocation density effect on hardening is more remarkable than that of thermal stress in high speed machining.

利用显微观察方法对铝合金7050-T7451高速铣削加工的工件表面断面和不同深度的表层的微观形貌特征进行系统的研究，确定了高速切削加工铝合金7050-T7451的表面变质层深度为30～35μm；应用位错能量研究了高速铣削加工过程的热力耦合对变质层的影响机理，并通过微观形貌观察证明：与普通切削相比，高速铣削表层塑性变形的能量和位错密度更高；建立了位错密度的加工硬化的动力学模型，研究了加工硬化的热-力耦合形成机理；对微观裂纹的形成机理进行了理论分析，证明位错密度高的高速切削过程中较低速加工更容易产生明显的微裂纹，从分子级乃至原子级的水平进一步揭示高速切削加工表面变质层的形成特征。

Effect of tungstic electrode argon arc hardening parameters on microstructure and mechanical properties of boron cast iron surface was investigated.

采用氩弧重熔技术在硼铸铁表面进行表面硬化改性处理，研究了钨极氩弧硬化工艺参数对硼铸铁表面组织和性能的影响。

Therefore it can be used for surface hardening and hardening of localised areas of metallic parts by "outrunning" the thermal conduction of heat deeper into the part or to surrounding areas.

因此，可颐于表面硬化，和局部地区的金属部分硬化的&没错&的热传导热深入到部分或周边地区。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失