摘要:
A cutting tool insert has a cermet body with a Co and/or Ni binder phase and a coating deposited as monolayer or as multiple and/or alternating layers of carbide, nitride or oxide. The coating has a thickness of 21-50 μm, when the inserts have a flat rake face, without or with simple chipbreakers and a Co binder phase, or has a thickness of 10-50 μm, when the inserts have a rake face land with a width of 100-300 μm with an angle of 10-25° to the rake face and a Co and/or Ni binder phase. The cermet body has more than 50 vol. % Ti-based carbonitride and less than 15 wt % and more than 6 wt % Co and/or Ni binder phase and a hardness of >1650 HV3. The disclosure also relates to the use of the coated cutting tool insert for the machining of cast iron work pieces.
摘要:
A coated cutting tool is composed of one or more layers of refractory compounds of which at least one layer is single-phase α-alumina with a pronounced columnar grain-structure and strong texture in the [300]-direction. The alumina layer is preferably deposited by CVD (Chemical Vapor Deposition) and the preferred microstructure and texture are achieved by adding a second metal halide, and a texture modifying agent, to the reaction gas. When coated cemented carbide cutting tools according to the invention are used in the machining of steel or cast iron, several important improvements compared to prior art have been observed, particularly in the machining of nodular cast iron.
摘要:
In order to obtain long time stability and usefulness for gas sensitive field-effect devices a micro structured surface is obtained below the final conducting layer. The conductive layer in the trenches or grooves will not only be protected to some extent but also they can constitute a conductive net with edges or boundaries that will remain essentially unchanged even if material is continuously lost along the borderline. The structure can be obtained in the layer laying directly below the conductive layer or in deeper lying layers with intermediate layers with even thickness.
摘要:
A medical implant device or component thereof comprising a metal substrate and a coating layer structure provided on the substrate. The coating layer structure comprises an outermost layer of a ceramic material. A bonding structure is deposited between the metal substrate and the coating layer structure. The bonding structure comprises a chromium rich layer, which is deposited onto the metal substrate surface and has a higher concentration of chromium than the metal substrate, as well as a gradient layer having a composition gradient from the chromium rich layer towards the surface of the device providing increasing proportions of a gradient material which has structural correspondence with the layer of the coating layer structure that is most adjacent to the bonding structure.
摘要:
The present invention discloses coated cutting tool inserts particularly useful for turning of nodular cast iron preferably at high speeds, comprising a cemented carbide substrate comprising from about 5 to about 9 wt-% Co and from about 1 to about 5 wt % cubic carbides and balance WC of 86-94 wt-%, and a coating comprising a first layer of TiCxNyOz with equiaxed grains, a layer of TiCxNyOz with a thickness of less than about 10 to about 15 μm with columnar grains, a layer of TiCxNyOz with a thickness of from about 0.1 to about 2 μm and with equiaxed or plate-like grains, a layer of α-Al2O3 with thickness from about 3 to about 8 μm, an outer layer of a multilayered structure of TiN+TiC with TiC being the outermost layer and a total thickness of from about 0.5 to about 2 μm and wherein the outer coating layer has been removed in the edge line and on the rake face so that the α-Al2O3 layer is on top along the cutting edge line and on the rake face and the outer TiC layer is the top layer on the flank face.
摘要翻译:本发明公开了一种特别适用于高速转动球墨铸铁的涂层切削工具刀片,包括硬质合金基体,其包括约5至约9重量%的Co和约1至约5重量%的立方碳化物和余量 WC为86-94重量%,以及包含具有等轴晶粒的TiC x N y O z的第一层的TiC x N y O z层,具有厚度小于约10至约15μm的具有柱状晶粒的TiC x N y O z层, 约0.1至约2μm,并且具有等轴或板状颗粒,厚度为约3至约8μm的α-Al 2 O 3层,TiN + TiC与TiC的多层结构的外层为最外层, 总厚度为约0.5至约2μm,并且其中外涂层已经在边缘线和前刀面上被去除,使得α-Al 2 O 3层沿着切削刃线和前刀面在顶部,并且 外部TiC层是顶部 层在侧面。
摘要:
A system for regulating the fuel-air mixture in a multi-cylinder internal combustion engine. The system utilizes binary sensors to detect relative deviations from stoichiometric combustion, including individual combustion events, and allows for regulation to achieve optimal and similar combustion to take place in all the cylinders.