Zhuzhou Huijin Cemented Carbide Co., Ltd.  

Product Name: Wear Resistance Cemented Carbide Sealing Ring for Industry Sealing Parts Model NO.: R-004 Standard: Standard, Nonstandard Performance: Wear Temperature: High Temperature Mechanical Seal Speed: Ultra-High-Speed Mechanical Seal Pressure: High Pressure Mechanical Seals Structure: Single End Material: Tungsten Carbide Material Density: 14.6-14.95g/cm3 Applciation3: Mechanical Seals Physical Performance: High Strength,Hardness,Wear Material 2: Wc+Co,100% Vingin Material Grade: Yg6, Ys2t, Yg8 Super Size: Od820-ID750-400mm Trademark: zzhuijin Transport Package: Cartons or Wooden Cases Specification: tungsten carbide Origin: China HS Code: 8209002100 Product Description TUNGSTEN CARBIDE SEAL RINGMechanical seal ring are used to seal the clearance between the rotating shaft and the stationary housing in equipment such as pumps and mixers, so that liquid can not leak out through this clearance.Tungsten carbide is the most excellent seal face material in the seal material world.One of main reasons for using Tungsten Carbide is the additional wear resistance that can be achieved in both moving and static parts.This is particular the case in serve service conditions, such as high temperature,and high levels of corrosion and abrasion. It is widely used in Oil Refineries, petrochemical industries, Fertilizer Plants,Petrochemical plants, Pharmaceutical industries.With high strength, toughness, wear and corrosion resistance and excellent heat-conducting property, hard alloy sealing rings provided byZhuzhou huijin carbideare mainly applied in some places with terrible environment.Zhuzhou Huijin carbidedesigns different marks according to different environment; the products can be divided into inlaid hard alloy stationary ring and solid carbide stationary ring according to the structure, such as different types with/without anti-rotating pins. Refer to product catalog for details. The ordinary marks of hard alloy sealing rings produced by the company as follows:GRADEMain Chemical Component(%)Bending Stength(≥N/mm2)Hardness(≥HRA)Density(g/cm3)Linear Bulge ModulusApplication guideWCCONiTicotherYWN694615008914.5-14.95.2Oil,Sewerage,Acid,alkili,Fat,fluidify Hydrocarbon,Strong Alkali With Grain And ETCYWN892816508814.4-14.85.3YWN10901021008714.5-14.95.3YG6946155089.514.7-15.15Oil,Sewerage,soft,Acid,alkili,Fat,fluidify Hydrocarbon,medium With GrainYG892817008914.6-14.95.1YG13871324008813.9-14.26Gas seal of compressorYG15851525008713.9-14.26.3A3088281117008914.0-14.56Oil,Sewerage,soft,Acid,alkili,Fat,fluidify Hydrocarbon,medium With GrainA10782108214908912.0-12.66Kinds of Tungsten Carbide Strure accords with Chinese Standard YS/T40ΦD (mm)Φd (mm)ΦH (mm)10~5002~4001.5~300Also we can produce the carbide sealing rings as your required.Carbide productionThe productionprocess of powder-metallurgical products basically includes the four steps of powder preparation, forming, sintering andfinishing.Tungsten carbide productionThe APT (ammonium para-tungstate) is calcined into tungsten oxide under high te-mperature. Subsequently the oxide is reduced to tungsten metal in a hydrogen atmosphere. The metal powder is then mixed with carbon and carburised underinert atmosphere at high temperatures. The production parameters are decisive for the WC grain size in the sintered carbide.Powder preparationThe tungsten carbide is intensely mixed with the binder metalcobalt, nickel or iron, various grain growth inhibitors and materials,which promote compaction, by wet grinding so that ahomogeneous suspension is created. Afterwards, the suspensionis dried in a spray tower to produce a granulate with goodflow characteristics. This granulate represents the basis for allforming processes.metal formingThe objective of the forming process is to obtain a near netshape sample. Pressing is normally carried out at room temperaturewith pressures reaching up to several tons per squarecentimetre.There are several ways of pressing blanks:During isostatic cold pressing the powder is filled into an elasticflexible hose and pressed into a compacted form throughhigh liquid pressure. The powder blocks which are producedin this way can then be processed mechanically. All commonmachining methods like milling, cutting, drilling or turning maybe applied.In uniaxial pressing the pressing tool consists of a die and anupper and a lower punch. The carbide powder is filled into thedie and then compacted to create the so called green carbide,which is ejected from the pressing die.Extrusion pressing is mainly used to produce rectangular baror cylindrical rod, with or without axial hole(s). A plasticiser isadded to the powder. The resulting paste is pressed throughan extrusion nozzle. Before sintering, the plasticiser must beevaporated in special drying furnaces.metal Injection Moulding (MIM) is a process used to producemore complex forms which cannot be produced by directpressing. The paste preparation is similar to the extrusionprocess.Sintering processThe sintering process converts the blank into a homogeneousand dense carbide with a high level of hardness. The materialis sintered at temperatures between 1,300 and 1,500 °C(liquid phase sintering) and sometimes also at high pressure(up to 100 bar). The volume is reduced by up to 50 % duringthis process.FinishingIn order to achieve the final requirements of surface finish, tolerances,etc. carbide parts can be subjected to a series of finishingprocesses such as grinding, spark erosion and coating.Zhuzhou HuijinCemented carbideCo., Ltd is located in Zhuzhou City, Hunan Province, China, where is the largest tungsten carbide producing area in China.Our mainpr-oducts inclue: Tungsten carbide rods, carbide strips, carbide dies and bushes, tungsten carbide roll rings, carbide disc cutters, carbide end mill cutters, carbidestud and pins, tungsten water jet cutters, precision tools, tungsten carbide grits and powder, welding rods, ceramet inserts, PCD and CBN tools, non-standard and deep-processing products and so on. We also provide very good quality of boron carbide, silicon carbide nozzles.Technology and Quality creates a bright future.Looking forward to your cooperation!Our company gathered the professional staff members for designing, producing and saling. Our workers are well trained and experienced. Our team is honest, positive, keeping promise, working hard and carefully. We sincerely hope we can provide our clients with good quality, moderate price together with professional service. We have advanced equipment, test facilities and professional employees. We strictly carry on ISO9001: 2008 requirements to guarantee the quality.