Basic Info.
Application
Household Appliances, Electronic, Hardware, Car, Commodity
Material
Hard Alloy and Steel Bonded Carbide
Processing Method
Punching and Shearing Mould
Process Combination
Composite Mould
Manufacturing Technology
Automation Technology
Mould Material
Tungsten Carbide +Steel Case
Grade
Yg6 Yg8 Yg11 Yg15 Yg20 Yg25
Application 1
Fasteners,Nails,Rivets,Bearings,Auto
Transport Package
Cartons or Wooden Cases
Product Description
Customized Non-standard Cemented Carbide Molds
Key Specifications/Special Features:
Tungsten Carbide Cold Forging Dies
Outside diameter, inner diameter, height are all accurate grinding, tolerance can be +0.01mm.The product has very good concentricity, parallelism, perpendicularity.
Our advantages:
1. Made by virgin raw material. Our production line is imported, the service life time of product is higher by 120%.-
2. Don't crack.
3. HIP (Hot Isostatic Press) sintering ensures the stable microstructure, the service life time is longer, die change is less, can improve the working & production efficiency.
4. We also supply carbide dies with coarse grain size, which has high impact resistance ability and can be used to make big size carbide dies.
The cost is reduced by increasing tool life and productivity is improved.
The defect rate is reduced and quality is improved.
High fracture toughness----------- lower crack occurrence
High strength and hardness-------improved tolerance of colt
Low friction coefficient--------------improved surface roughness
Tungsten carbide grade selection
In the standard tungsten carbide cold heading process, tungsten carbide cold heading die need to withstand greater shock, in order to meet the requirements, you must use the tungsten carbide with a higher amount of cobalt-containing, high strength and good toughness. Such as YG15, YG20, YG20C, YG22C, HJ80.1 (GT55). | Grades | Wc% | Co% | Density | T.R.S | Hardness | Performance & application recommended |
| g/cm3 | MPa | HRA |
| YG11 | 89% | 11% | 14.4 | 2600 | 88.5 | Forming or stamping dies for metal powders and nonmetal powders. |
| YG15 | 85% | 15% | 14 | 2800 | 87.5 | For fabricating drawing dies of steel tubes and rods under high compressibility ratio; punching, stamping, forging tools under large stress. |
| YG20 | 80% | 20% | 13.5 | 3200 | 85.5 | For fabricating of stamping dies for watch parts, spring plates of musical instruments, battery jays, small sized steel balls, screws, screw caps. |
| YG16C | 84% | 16% | 13.9 | 2900 | 85.5 | Impact resistance forging dies. |
| YG18C | 82% | 18% | 13.7 | 3100 | 84.5 | Impact resistance forging dies, hot-press forging dies and rollers. |
| YG20C | 80% | 20% | 13.5 | 3300 | 83 | Dies for wear resistant or impact resistant application. |
| YG22C | 78% | 22% | 13.3 | 3500 | 82.5 | Nut forming dies and high impact resistance forging dies. |
| YG25C | 75% | 25% | 13.1 | 3600 | 82 | Stainless bolt header dies and rollers. |
| HJ80.1 | 75% | 25% | 13.05 | 3800 | 83.2 | It is suitable for screw cap forming dies with high strength (highest impact-resistant forging dies). |
| Name | Brand | Precision |
| Surface Grinding | Taiwan Kent | Precision: ±0.002mm |
| Flatness: 0.003mm |
| Roughness: Ra0.03 |
| Centerless Grinding | Wuxi | Precision: ±0.002mm |
| Roundness: 0.25~2.0um |
| Concentricity: 0.001~0.0015mm |
| Perpendicularity: 0.002mm |
| Roughness: 0.03~0.06 |
| Cylindrical Grinding | Shanghai
Fu Shun Cheng | Precision: ±0.002mm |
| Roundness: 0.25~2.0um |
| Concentricity: 0.001~0.0015mm |
| Perpendicularity :0.002mm |
| Roughness: 0.03~0.06 |
| EDM | GF AgieCharmilles | Precision: ±0.008 |
| Roundness: ±0.005 |
| Roughness: Ra0.5 |
| Wire EDM | GF AgieCharmilles | Roundness: ±0.005 |
| Roughness: Ra0.5 |
The 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 under inert 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 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 formingThe 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 acompacted 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 maybe 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 processThe 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.
FinishingIn 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.
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!
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