磨损层

A new concept that the roll surface can be hardened proportionally according to its abrasion curve by using laser treatment technique was put forward.

提出了一种利用激光表面处理技术对辊面按磨损程度进行等比例强化的概念，即在获得轧辊准确磨损规律的基础上，针对不同部位调整激光工艺参数，在辊面形成合理的淬硬层搭配，达到轧辊表面磨损均匀化、提高轧辊综合使用寿命和降低辊耗的目的。

Cermet cladding material is a new kind of composite material with high wear resistance, it is especially suitable to manufacture parts under wear condition.

金属陶瓷硬质覆层材料是一种具有高耐磨损性能的新型层状复合材料，尤其适应于耐磨损零件的制造。

The friction performances of carbon face were investigated with an inertia friction tester. The torque curve of carbon face was ideal, the coefficient of static friction was lower than that of dynamic in 0.28 MPa, the friction coefficient of static and dynamic decreased with the braking pressure increasing. To the fiber face, the coefficient of dynamic friction of carbon face was more stable in cycle braking process, the wear rate was lower, and it was efficient to protect the couple plate not to be worn.

结果表明：碳质层的摩擦力矩在制动初期上升较快，中间过渡区平稳，尾部翘起较小；在制动压力小于0.28 MPa时静摩擦系数小于动摩擦系数，且动、静摩擦系数均随制动压力增加而减小；相对纤维层而言，采用碳质层摩擦时摩擦力矩曲线形态更好，连续制动时摩擦系数波动较小，磨损率低且能够有效保护偶件，是1种静/动摩擦系数比较低且适用于高载荷工况条件下使用的摩擦材料。

In addition, there is delamination removal at weak interface due to decarburization.

普通涂层的磨损机制为微切削；纳米涂层在轻载(10 N)下，以塑性变形为主要磨损机制，随载荷增加至30 N，纳米WC粒子不能起到阻抗陶瓷球对磨副的磨削作用，而是随粘结相一起被去除，同时由于纳米涂层脱碳导致的层间结合薄弱，在滑动磨损中易发生成片剥落，耐磨性大幅下降。

The structure shown in the figure : The governing body received direct or roller drying cylinder, as the main components of the rotation; After finishing the outside of the sphere, Bottom Cover and soak spherical carbon graphite seal ring joint seal reliable seal friction deputy, Sealing ring in the spherical shell of its annular space sliding, in addition to oil-free bearings and with the close cooperation of Shell, Rotating connector so that the free support, and therefore do not require a high level of accuracy installed; Spherical seal ring wear, Spring means of pressure at any time in advance to receive compensation, compensation for the shell slowly moved backward, accessible through the tube outside the inscription on the line to observe the seals wear; When steam, Oil flows through the media or other spherical sealing ring and oil-free bearings, the formation of thin liquid film, sealing and lubrication, thereby reducing friction and wear, extending the service life.

其结构如图所示：外管体直接接到辊子或烘筒上，为主要的旋转部件；经过精加工的外管本球面、底盖和浸泡碳石墨球面密封环共同组成密封可靠的动密封磨擦副，球面密封环在其壳体内的环形空间中滑动，加之无油轴承与壳体的密切配合，使旋转接头自由支撑，故对装机精度要求不高；球面密封环磨损后，借助于弹簧的预压力随时得到补偿，补偿时壳体缓缓向后移动，并可通过外管体上的刻线观察到密封件的磨损程度；当蒸汽、油或其它介质流经球面密封环和无油轴承时，形成一层很薄的液膜，提供密封和润滑，从而减轻了摩擦和磨损，延长了使用寿命。

The adhesion wear of the coatings is somewhat different from the sintered or cast materials, which could be explained in terms of interlamellar cracking and flaking off of lamellae.

涂层的粘着磨损显示出不同于块体材料的粘着磨损的特点，表现为粘着力引起涂层层间裂纹扩展和层状颗粒剥离。

Sulfide layer was made on the surface of high speed steel (W6Mo5Cr4V2) by means of low temperature ion sulfurization. The tribological properties of the sulfide layer under dry sliding were investigated on an MM 200 friction and wear test rig. An atomic force microscope and a scanning electron microscope equipped with an energy dispersive spectrometer attachment were adopted to analyze the morphologies and compositions of the original and worn surfaces of the sulfide layer. The phase structure of the sulfide layer was determined by X ray diffraction.

采用低温离子渗硫工艺在 W6 Mo5 Cr4 V2高速钢表面制备了硫化物固体润滑层，在 MM- 2 0 0型摩擦磨损试验机上对渗硫层的摩擦学性能进行了干摩擦试验研究，用原子力显微镜及扫描电子显微镜和 X射线光电子能谱分析渗层表面、截面、磨面的形貌及成分，用 X射线衍射仪分析了渗硫层相结构。

The chemical corrosive wear mechanism of electroless Ni-P coating under unlubricated wear was studied by test and theory and the possibility of as an anti-chemical corrosive wear coating on drill pipe was probed into.

从实验和理论两方面研究了化学镀Ni-P合金在无润滑磨损条件下的化学腐蚀磨损机理，探讨了化学镀Ni-P合金作为钻杆耐腐蚀磨损功能性镀层的可行性。

The microstructure, phases composition and microhardness of the coating were analyzed and measured by SEM, XRD and microhardness testers respectively, and the friction and wear properties of the specimens sliding against Al2O3 ceramic in a ball-on-discmode and under unlubricated condition were investigated.

中文摘要：采用粉末包埋法在P110钢表面制备渗铬层；借助扫描电子显微镜、X射线衍射仪和显微硬度计，对渗铬层的显微组织、相组成和显微硬度进行了分析和表征，并通过无润滑条件下的球－盘式摩擦磨损试验研究了渗铬处理对其摩擦磨损性能的影响。

The abrasion and scuffing behaviour of Ni-base spray-welded coating containing WC by oxygen-acetylene was studied and compared with those of boride layer using a MM200 wear tester.

利用MM200型磨损试验机研究了氧-乙炔焰镍基碳化钨喷熔层的磨粒磨损和抗咬合特性，并与硼化物层进行了比较。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。