Zhuzhou Huijin Cemented Carbide Co., Ltd.  

Product Name: Bulk Stock Tungsten Carbide Rods for End Mill and Drills Model NO.: OD 0.5~50 Application: metal Cutting Machine, metal Processing Machinery Parts, metal Engraving Machinery, Drilling Machinery Material: Tungsten Carbide Customized: Non-Customized Certification: ISO9001 Condition: New Raw Material: Tungsten Carbide Grain Size: 0.8, 0.6, 0.5, 0.4 Type: Unground Rods Trademark: zzhuijin Transport Package: Cartons or Wooden Cases Specification: OD 0.5~50, L 330 /310 Origin: China HS Code: 8209002900 Product Description Tungsten carbide rods are used for the production of drill bits, end mills, cutter, reamers, carving knife, anti-vibration tool holder and other products.According to different processing field, such as processing of normal alloy steel, gray cast iron, stainless steel and heat-resistant alloy materials; finishing and processing of aluminum alloy, titanium alloy; processing of hardened steel, aluminum alloy, carbide rod should choose different grade. Stability and high technology ensure the high quality of our products. With its unique properties, carbide rod is widely used in high-speed railway, aerospace, electronic components and machinery.ISOCodeCo%DensityHardnessTransverseRuptureHV30HRAK106%14.8g/cm³1930N/mm²94.04100MPa6%14.9g/cm³1700N/mm²92.43000MPa6%14.93g/cm³1500N/mm²91.02600MPaK10-K208%14.6g/cm³1900N/mm²93.74200MPa8%14.8g/cm³1500N/mm²91.03800MPaK2O-K30(HotSale)10%14.4g/cm³1650N/mm²92.24400MPa10%14.08g/cm³1500N/mm²91.03300~3700MpaK30-K4012%14.1g/cm³1700N/mm²92.5 4100MPaK5015%14.0g/cm³1150N/mm²87.52800MPaApplication:Used in welding/ making the drill bits/ endmills / reamers .automobile special cutters, printed circuit board special cutters, engine special cutters, Horologe processing special cutters, integral vertical milling cutter, graver and etc. Besides, they can bu used for making of cemented carbide stamping head, Core bar and perforation tools.The Specification Range of extruded Grounded Tungsten Carbide Rod :WC Grain size range: 0.3~0.5μ.m; 0.5~0.9μ.m; 1.0~1.3μ.m; 1.4~2.0μ.m.Length range:3mm-600mm; (General Length: 100mm,300mm,320mm,330mm)Diameter Grade: h4(H4), h5(H5), h6(H6), h7(H7), h8(H8), h9(H9), etc.Good grinding machine to ensure the sphencity & the Linearity of rod at higher level standard;Sphericity tolerance range: 0.001mm ~ 0.005mm;Linearity tolerance range: 0.001mm~0.1mm;Surface Roughness can be reached to: RA0.04.(reach a mirror effect surface after fine grinding)Sphericitytolerance&Circularrun-outforGroundedTungstenCarbideRod:DiameterSurfaceRoughnessSphericityCircularrun-out2--6mmRA0.040.001↑0.16.5-10mmRA0.040.001↑0.110.5-14mmRA0.040.002↑0.114.5-20mmRA0.040.004↑0.05>20mmRA0.040.005↑0.03ISO286-2CarbideRoundBarTolerances"hSeries"inMillimeters:Diameterh4h6h9h110-3.0mm0/-0.0030/-0.0060/-0.0250/0.0063.001-6.0mm0/-0.0040/-0.0080/-0.030/0.0086.001-10.0mm0/-0.0040/-0.0090/-0.0360/0.00910.001-18.0mm0/-0.0050/-0.0110/-0.0430/0.01118.001-30.0mm0/-0.0060/-0.0130/-0.0130/0.01330.001-50.0mm0/-0.0070/-0.0160/-0.0520/0.01650.001-60.0mm0/-0.0080/-0.0190/-0.0620/0.019Carbide 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.