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沒在略高于 Ac1 溫度熔化的氰化鈉鹽溶液中，浸泡的持續(xù)時間取決于硬化層的深度亚洲黄色一区二区在线观看。

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.

這引 起硬化混凝土表面所謂的蜂窩麻面插抽视频，耐久性和強度降低以及不受歡迎的表面光潔度a片一区二区白嫩美女。

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

目的：測定涂布超硬石膏表面硬化劑有機硅樹脂前后石膏模型的表面硬度和抗磨損性能欧美性爱第十页，為該石膏表面硬化劑的臨床應用提供依據色黑人网。

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鋼的水平以使其容易淬火；加入適量的銅以減少鎳的使用量中国精品jizzjizz；又加入少量的鉬以加強淬火的硬化能力www.youjizz.com日本；在無須犧牲VC級別防護性能的情況下，沒有采用對淺層裝甲使用滲碳（大多數情況下外國的表面硬化處理方式）的工藝成人日韩欧美一区二区免费。

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.

在平面磨床上采用橫向進給磨削方式對40Cr鋼進行表面硬化處理欧美性爱视频欧美，研究了磨削表面硬化層組織與磨損性能的變化趨勢。

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，本發(fā)明提供一種表面安裝感應環(huán)檢測器久久免费高清视频，包括：感應環(huán)久久影院无码专区人妻，該感應環(huán)適用于連接到外部電子控制器設備；保護罩国产精品第一页福利在线，該保護罩為具有基本上呈柔性的圓環(huán)狼友视频在，該圓環(huán)具有硬化的91色热热、傾斜外周緣亚洲人成在线观看网站不卡；所述圓環(huán)適用于容納位于安裝表面和圓環(huán)下表面之間的感應環(huán)，并設有用于把檢測器固定到安裝表面的裝置欧美性爱YY特黄特黄免费大片。

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.

確定了上述表面完整性指標與磨削參數之間的關系国产18av视频，并根據正交試驗建立了磨削表面粗糙度、表面硬化和表面殘余應力的經驗公式黄色网站视。

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.

利用顯微觀察方法對鋁合金7050-T7451高速銑削加工的工件表面斷面和不同深度的表層的微觀形貌特征進行系統(tǒng)的研究4455永久在线播放，確定了高速切削加工鋁合金7050-T7451的表面變質層深度為30～35μm；應用位錯能量研究了高速銑削加工過程的熱力耦合對變質層的影響機理色八A级在线观看，并通過微觀形貌觀察證明：與普通切削相比农村老熟女乱子视频，高速銑削表層塑性變形的能量和位錯密度更高；建立了位錯密度的加工硬化的動力學模型国产精品久久九九免费视频，研究了加工硬化的熱-力耦合形成機理黄色网址国产区；對微觀裂紋的形成機理進行了理論分析，證明位錯密度高的高速切削過程中較低速加工更容易產生明顯的微裂紋日本强奸乱伦中文字幕，從分子級乃至原子級的水平進一步揭示高速切削加工表面變質層的形成特征免费爆操网站。

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

采用氬弧重熔技術在硼鑄鐵表面進行表面硬化改性處理，研究了鎢極氬弧硬化工藝參數對硼鑄鐵表面組織和性能的影響1024手机看片日韩人妻。

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.

因此日韩在线7777，可頤于表面硬化，和局部地區(qū)的金屬部分硬化的&沒錯&的熱傳導熱深入到部分或周邊地區(qū)黄色一级免费在线观看。