Basic Info.
Type
Cu (Copper/Copper-Alloy Welding Electrode)
Welding Core Type
Carbon Structural Steel
Electrode Coating Type
Titanium
Slag Characteristic
Acidic
Function
Surfacing Electrode, Hardfacing Electrode
Applciation
Wear Resistance and Cutting
Material 1
Copper and Tungsten Carbide, Tungsten Carbide and
Welding Current
50-240asition
Particle Size
1~3 3~5 4~6 5~7 8~10mm
Product Description
Tungsten Carbide Composite Rods
Length 300mm scrap size 4.8~6.4mm tungsten carbide composite rod for hardfacingtungsten carbide composite rod for hardfacing it is made of by sintering tungsten carbide scrap and elastic matrix alloy,Outer layer of the special flux and coloring is marking scrap grade,the composition of sintering tungsten carbide scrap is mainly CO and WC,The hardness is HRA 89~91,tire body matal is Ni and copper alloy,strength can up to 690MPa, hardness HB≥160.Tungsten carbide composite rod for hardfacing usage: it is mainly used for surfacing welding the oil, mining, coal mining, geology, construction and other industries in some serious wear and tear or artifacts of both cutting.Such as: milling shoes, grinding, centralizer, reamer, drill pipe joints, hydraulic cutter, scraper, plough planer knives, core bit, piling drill, twist drill, etc.Tungsten carbide composite rod for hardfacing size and grade: there are eight grades according the size of tungsten carbide scrapgrade | size (mm) | scrap size (mm) | color |
YD-9.5 | 9.5 | 9.5~6.5 | dark green |
YD-8 | 8.0 | 8.0~6.5 | dark blue |
YD-6.5 | 6.5 | 6.5~5.0 | red |
YD-5 | 5.0 | 5.0~3.0 | yellow |
YD-3 | 3.0 | 3.0~2.0 | pink |
YD-10mesh | 10mesh | 10~18mesh | light green |
YD-18mesh | 18mesh | 18~30mesh | light green |
YD-30mesh | 30mesh | 30~50mesh | light yellow |
overlaying process of tungsten carbide composite rod for hardfacing
The oxyacetylene butt, the operating process is as follows:
(1) clean up the workpiece, make the welding workpieces surface with metallic luster.
(2) the flat position of welding, therefore can use the appropriate clamping fixture for control of surfacing layer thickness, thick piece of available.
(3) with a neutral flame preheating, flame core not contact surface, the distance to 25 mm is advisable.
(4) carbide surfacing welding layer.With YD type electrode surfacing, the use of neutral flame (can be slightly carbonizing flame) tip is steady on the workpiece surface movement, the flame of the alloy electrode heating (be careful not to make flame cone tip contact alloy particles), tire body in the electrode alloy melt, carbide particles are also falling.Before the tire body of molten metal solidification, the particles arrange, can use left hand of the alloy electrode fingers, or another person holding a base electrode or pull rod on graphite rod in a quick stir particles, making them evenly aligned neatly.Surfacing layer thickness control according to the requirements of design.
(5) after the workpiece welding, where no ventilation, slow cooling, cannot quench, conditional usable asbestos blanket cover.
(6) the workpiece after cooling to room temperature, if necessary, grinding surface surfacing to required size and shape.
(7) clean up the workpiece, remove all
zhu zhou huijin composite rods' quality can be compared with Germany's, with the advantages:
1. High quality anvil hard alloy material, rounded & angular particles
2. Average perviousness
3. Fusible, easy to welding
Carbide production
The productionprocess of powder-metallurgical products basically includes the four steps of powder preparation, forming, sintering andfinishing.
Tungsten carbide production The 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 under inert atmosphere at high temperatures. The production parameters are decisive for the WC grain size in the sintered carbide.
Powder preparation The tungsten carbide is intensely mixed with the binder metal cobalt, nickel or iron, various grain growth inhibitors and materials, which promote compaction, by wet grinding so that a homogeneous suspension is created. Afterwards, the suspension is dried in a spray tower to produce a granulate with good flow characteristics. This granulate represents the basis for all forming processes.
Metal forming The objective of the forming process is to obtain a near net shape sample. Pressing is normally carried out at room temperature with pressures reaching up to several tons per square centimetre. There are several ways of pressing blanks: During isostatic cold pressing the powder is filled into an elastic flexible hose and pressed into a compacted form through high liquid pressure. The powder blocks which are produced in this way can then be processed mechanically. All common machining methods like milling, cutting, drilling or turning may be applied. In uniaxial pressing the pressing tool consists of a die and an upper and a lower punch. The carbide powder is filled into the die 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 bar or cylindrical rod, with or without axial hole(s). A plasticiser is added to the powder. The resulting paste is pressed through an extrusion nozzle. Before sintering, the plasticiser must be evaporated in special drying furnaces. Metal Injection Moulding (MIM) is a process used to produce more complex forms which cannot be produced by direct pressing. The paste preparation is similar to the extrusion process.
Sintering process The sintering process converts the blank into a homogeneous and dense carbide with a high level of hardness. The material is 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 % during this process.
Finishing In order to achieve the final requirements of surface finish, tolerances, etc. carbide parts can be subjected to a series of finishing processes such as grinding, spark erosion and coating.
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Zhuzhou Huijin Cemented carbide Co., Ltd is located in Zhuzhou City, Hunan Province, China, where is the largest tungsten carbide producing area in China. Our main pr-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.
Address:
Guihua Group, Guihua Village, Mingzhao Township, Hetang District, Zhuzhou City, Hunan Province
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Auto, Motorcycle Parts & Accessories, Industrial Equipment & Components, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware
Management System Certification:
ISO 9000
Company Introduction:
Zhuzhou Huijin Cemented Carbide Co. Ltd is located in the hometown of Tungsten carbide, Zhuzhou city, Hunan Province, the largest tungsten carbide producing area in China.
Our company have our own Lab for inspection, advanced production equipment, excellent technical R&D team. We have production line from mold workshop, design, production and deep processing. More than 20000 sets molds stock for production. Large stock for standard products, such like carbide rods, carbide strips, and carbide plates. In this way, our products are 100% quality guaranteed and delivery fast.
Our main products including:
Range 1, Customized products and precision processing products.
Range 2, Tungsten carbide die cores for Cold heading dies, drawing dies, nail mold.
Range 3, Tungsten Carbide cutting tools (Inserts, shims, end mill, drills, wood and stone working tools, tungsten carbide saw blade, saw tips, carbide disc cutter, percussive drill tip.
Range 4, Tungsten carbide Mineral tool (TBM cutter, button, coal drilling bits, drill bits).
Range 5, Carbide rods, carbide strips (STB blanks), carbide plates.
Range 6, Carbide nozzle, carbide mechanical seal ring, bushing, balls & seats.
Range 7, High density products
With stable products quality, professional service, competitive prices, our customers range over 50 countries and regions. You are welcome to contact us anytime for all carbide solutions.
Inquire now and receive a reply within 24 hours!
Trust us, we are your best choice!