![]() Cemented carbide drawing dies are used in wire drawing industries for drawing of different materials like Mild Steel (M.S), High Carbon (H.C), Stainless Steel (S.S), Brass, Aluminum, etc. All major wire producers use tungsten carbide drawing dies. Carbide grades for drawing dies: WF20,WF30,KG7,CD65O, AF312 We can make suggestions for suitable grades for customers’ usage. Our types of cemented carbide drawing dies: 1. Dies for drawing metal wires 2. Dies for rods. 3. Dies for tubes. 4. Dies for plugs. 5.No-standard drawing dies 6.finished and semi-finished available. Application: Carbide drawing dies ( Carbide dies )application scope is very extensive, mainly used for drawing rods, wire, silk, pipe material, and so on. It is suitable for drawing process steel, copper, Tungsten, molybdenum, and alloy material. #cementedcarbidedies #cementedcarbidedrawingdies #carbidedies
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![]() Tungsten Carbide Bushings are an ideal choice for steel wire and other large-size wire drawing applications. Each of our products is manufactured with expert technology and strict quality measurements. Our standard tungsten carbide dies and tools can be customized to your specifications. We also offer completely custom products based on your engineering drawings/requirements. Dongguan JLS Precision manufactures a vast array of tungsten carbide dies and tools. Although we have a lot of standard products that can be customized to your specifications, we also offer completely custom tooling based on your technical drawings. So, if you do not happen to find the product you are looking for, please contact our sales department to see if we can meet your tooling needs. We are committed to providing competitive and quality tungsten carbide bushings that meet or exceed our customer's requirements. We will meet these levels of quality through a total commitment both in management and our skilled workforce for continuous improvement. Cemented carbides have a relatively good balance of hardness and toughness, and have also abrasion resistance and heat resistance. Therefore, they are widely used in cutting tools, blasting nozzles, drawing or extrusion dies, seal rings, and a variety of wear-resistant structure parts, etc. In general, cemented carbides consist of a hard phase (primarily tungsten carbide WC) and a binder phase (primarily cobalt Co). The friction and wear behaviors of WC/Co cemented carbide tool materials with average WC grain sizes ranging from 0.6 to 2.2 μm were evaluated in ambient air at temperatures up to 600 °C using a ball-on-disk high-temperature tribometer. The friction coefficient and wear rate were measured. The microstructural changes and the wear surface features of the WC/Co cemented carbides were examined by scanning electron microscopy. Results showed that the friction coefficient of WC/Co cemented carbides decreased with the increase of test temperature. All the tested samples showed the highest friction coefficient when sliding at 200 °C, and exhibited the lowest friction coefficient in the case of 600 °C. The wear rate of WC/Co cemented carbides increased with the increase of test temperature. The cemented carbide with the smallest WC grain size showed improved wear resistance at temperature up to 600 °C, which corresponds to its higher value of hardness. The difference of the work surface features of the WC/Co cemented carbide after sliding at different temperatures is related to the chemical transformation during sliding wear tests. Abrasion and grain cracking seemed to be the main wear types at a temperature less than 200 °C, the wear owing to binder removal by plastic deformation and grain pull out were suggested to be the main wear mechanism at an intermediate temperature, while the mechanism of oxidative wear dominated at 600 °C. #tungstencarbidebushings #tungstencarbidedies #carbidedies #hardenedsteelbushings ![]() What is cemented carbide dies? Cemented carbide dies are mold components made from cemented carbide. Ok, what is cemented carbide then? Although cemented carbide already exists for more than 100 years, the material is still not well enough known. The exceptional properties of cemented carbide make it particularly suitable for many wear applications. Cemented carbide also called tungsten carbide or just carbide consists of exceptionally hard tungsten carbide particles in a ductile metallic binder mostly Cobalt (Co) or Nickel (Ni). This hybrid structure gives cemented carbide its unique feature of combining extremely high hardness with very high compressive strength and good toughness. Other properties of cemented carbide are high hot hardness and good corrosion resistance. By varying the carbide grain size and the metal binder composition and content, cemented carbide can be fine-tuned in order to obtain optimized properties like : Wear resistance Corrosion resistance Edge stability Resistance against galling Impact resistance Cemented carbide is a material that is produced by powder metallurgy starting from carbide particles and metal powder. The production process and the purity of the powders are decisive for the final quality of the finished part. Therefore it is very important to make to correct choice of cemented carbide for each application. JLS will use its year-long experience in carbide properties and applications to advise you in the right choice for your application. Properties of Cemented Carbide Hardness: up to 2200 HV30 (tool steel Compressive strength: up to 8500 MPa (higher than any steel) Transverse Rupture Strength: up to 4600 MPa (force needed to break carbide in three-point bending test) Corrosion resistance: very high when the correct binder metal is chosen Examples of cemented carbide applications Abrasive Wear Because of the very high hardness and corrosion resistance, carbide has exceptional resistance against dry and wet abrasion resistance. Some applications are: seats for ball, gate and trim valves pump plungers and mechanical seal rings oil and gas drilling tools, wear parts for tunnel boring wastewater and solid waste treatment Cutting The compressive strength and toughness make cemented carbide the preferred material to cut all types of material. Applications: Wood chipping Knives for metal scrap Hardened steel bushings for expanded metal punches for perforated metal Guillotine shears Rotary knives, slitter knives Bending, rolling, extrusion The high hardness of the carbide grains increases the galling resistance. Applications: Cold and hot rolling rolls for wire Tools for bending and forming presses Aluminum extrusion dies Shredding, grinding and mixing Cemented carbide is exceptionally suitable for shredding, grinding and mixing of different materials. Shredders for metal, plastic, wood, paper, cardboard, cellulose, … Hammer mills Wet and dry grinding mills Impact mills for metal and mineral powders #hardenedsteelbushings #tungstencarbidedies #cementedcarbidedies ![]() Tungsten carbide is one of the hardest and most wear-resistant materials available. It is often used for die components in high volume manufacturing situations. It is also used for machine parts that come in contact with very abrasive materials. Tungsten carbide is a combination of tungsten carbide powder and a binder metal, such as cobalt or nickel, which holds the tungsten carbide powder together. By adjusting the percentage of binder metal, tungsten carbide components can be made very wear-resistant but brittle or very durable but not as wear-resistant. Very smooth, polished finishes can be produced on tungsten carbide components ( carbide dies, hardened steel bushings, carbide punch ) which improves wear resistance of the component and aids significantly in metal forming applications. Cemented carbides used in press die are alloys of tungsten carbide (WC) and cobalt (Co). The main constituent of the material is tungsten carbide, and cobalt has the role of a binder (adhesive material). The amount of cobalt is in the range of 5 to 25%. The hardness of cemented carbide decreases as the number of cobalt increases. This material has been stipulated into the types of V10, V20, V30, V40, V50, and V60 in the standard 019 of the Japan Cemented Carbide Tool Manufacturer's Association. V10 has about 5% cobalt, V30 has about 12%, and V60 about 25%. The hardness is 89 HRA or more in the case of V10, 87 HRA or more in the case of V30, and 78 HRA or more in the case of V60. By the way, 85 HRA is converted to 67 HRC. Apart from the amount of cobalt, the hardness is also related to the size of WC particles. The hardness increases as the particle size become smaller. The particle size of ordinary cemented carbide is about 2.5 to 1.5 μm. Ultrafine particles have diameters in the range of 0.7 to 0.5 μm. When the material has ultrafine particles, it is possible to enhance the properties of both wear resistance and brittleness. Cemented carbide is a hard material but is also brittle. The material property is selected considering the balance between hardness and brittleness according to the intended application. V30 and V40 are about the standard for the press dies. In the case of blanking dies and punches, V30 is used for punches, and V40 is used for dies. For bending and drawing, a slightly harder V30 and V20 are used giving priority to wear resistance. A softer V50 and V60 are used in compression forming in order to prevent breakage. Even if the selection of the material is appropriate, if the surface roughness is bad, it may not be possible to satisfy the expected life even in the case of cemented carbide. Reducing the surface roughness by lapping is a very frequently used countermeasure in the case of cutting blades. However, when machining copper, nickel, and pure iron, the wear of cemented carbide may be fast. The reason for this is that the affinity between the cobalt present in cemented carbide and copper or nickel causes the wearing of the cemented carbide to progress faster. Although cemented carbide appears to be hard and versatile, caution should be exercised because it may not meet the expectations depending on how it is used. Although the standards of the Japan Cemented Carbide Tool Manufacturer's Association were used for the above explanations, the code used can be different for different manufacturers. Use the standards of JCCMA to compare and select the appropriate material. #tungstencarbidecomponents #carbidedies #carbidebushings ![]() JLS precision produces high quality, close tolerance precision ceramic parts, zirconia ceramics punches, precision ceramics pin, ceramic wear parts, tungsten carbide bushings, steel and carbide soldered bushings at prices 10%-20% lower than our competitors. Zirconia ceramics (ZrO2, Zirconia) are new ceramics with excellent physical and chemical properties. They are widely used in industrial production and are important raw materials for refractory materials and high-temperature structural materials. Among various metal oxide ceramic materials, zirconia ceramics have the best thermal stability and thermal insulation properties and are suitable for ceramic coatings and high-temperature resistant products. Zirconium oxide has the lowest thermal conductivity among common ceramics, and its thermal expansion coefficient is close to that of metallic materials. It is an important structural ceramic material. Zirconium oxide has three crystal forms: monoclinic, tetragonal, and cubic, and has a density of 5.65 g.cm3, 5.65 g.cm3, and 5.65 g.cm3, respectively. It can be seen that the higher the temperature, the greater the density. Therefore, at the same quality, the lower the temperature, the larger the volume. ZTC ceramics have three typical structures: 1. The c-ZrO2 phase matrix diffuses the double structure of t-ZrO2, namely PSZ. 2. The fine grains are a completely t-ZrO2 phase, ie TZP. 3. The t-ZrO2 phase is dispersed into other ceramic substrates, such as ZTA, for the toughening phase. Among them, TZP is the material with the highest mechanical properties at room temperature in ZTC materials, and Y-TZP with Y2O3 as a stabilizer in TZP is the most widely used. We understand 100% accuracy, outstanding service, and rapid delivery save our customers time. Through the years we have gained a reputation for providing reliable products with satisfactory customer service. We are the direct factory in China, using tungsten carbide with hardness up to 88-92HRA. Grades such as WF30, WF20, KG7 or specified by customers. The mirror surface is supported. We perform 100% inspection of each product to make sure every piece of products is perfect with flawless surfaces when delivery to customers. #ceramicwearpart #Zirconiaceramicspunch
![]() WC-Co cemented carbide is a conventional tool material. In recent years, with the continuous development of cutting technology, the requirements for the strength, hardness, and wear resistance of tool materials are getting higher and higher. Compared with traditional structural cemented carbides, superfine cemented carbides (WC grain size 0.1-0.6um) have higher strength, hardness and wear resistance, so they are widely used in the tool manufacturing industry. Grinding with a diamond grinding wheel is the main method to produce cemented carbide tools (such as hardened steel bushings, carbide bushings, carbide punches, tungsten carbide bushings). Many studies have shown that grinding surface roughness has an important influence on the cutting performance and service life of cemented carbide dies. Up to now, the grinding research of cemented carbide at home and abroad mostly focuses on the improvement of traditional structure cemented carbide grinding process and surface quality control, while the grinding process of superfine cemented carbide, especially the grinding surface roughness, is rarely studied. Therefore, through grinding experiments, the influence of grinding wheel size and cutting depth on surface roughness of ultra-fine cemented carbide grinding is discussed by means of scanning electron microscopy (SEM) and surface roughness tester, in order to provide the basis for the optimization of grinding process of ultra-fine cemented carbide. Concluding remarks 1 Under the same cutting depth, the grinding surface roughness of superfine cemented carbide increases with the increase of grinding wheel size. The surface roughness is low when grinding with a fine diamond grinding wheel. 2 When grinding with the same size grinding wheel, the surface roughness of ultra-fine cemented carbide grinding increases with the increase of the cutting depth. When the cutting depth increases to a certain value, the grinding surface roughness decreases gradually. 3 The influence of grinding parameters on the surface roughness of ultra-fine cemented carbide grinding can be attributed to the difference of material removal methods during grinding. #tungstencarbidebushings #carbidedies #hardenedsteelbushings ![]() Dongguan JLS Precision Mold Parts Co., Ltd is a leading manufacturer of carbide dies, wire drawing dies for metal stamping companies. Over the 20 years, we have accumulated a wide reputation for manufacturing quality and high-performance draw tooling for hardware, automotive, communication, aerospace, electronics, medical and industrial applications. Our products are considered amongst the best in the world for providing long-lasting, reliable, consistent performance. Our manufacturing experience consists of: Carbide dies, Cutting Dies, tungsten carbide bushings, carbide punch, Carbide Punch Pin, Steel Dies, Steel, and Carbide Soldered Dies, Extrusion Dies, Carbide Punch, Carbide Nozzles, Solid carbide cutting tools Our equipment is designed for this type of manufacturing. We have the following equipment for grinding carbide; Middle-Speed EDM Machine 2 EDM Cutting Machine 2 CNC Lathe 2 Surface Grinding Machine 6 Internal Grinding Machine 2 Centerless Grinding Machine 3 Punch Grinding Machine 9 Typed-15 Desktop Lathe 2 Typed-15 Desktop Lathe 1 We are involved in providing the quality carbide dies needed to keep your operations running smoothly. We implement our specialty polishing process into all of our automotive toolings to ensure that your tooling has the lifespan that you require. We would be happy to work with you to find a solution to your production needs with carbide dies. #carbidedies #tungstencarbidedies #cementedcarbidedies #tungstencarbidebushings ![]() JLS precision produces quality, tight tolerance tungsten carbide bushings, carbide dies, steel, and carbide soldered bushings at prices 10%-20% lower than our competitors. We understand 100% accuracy, outstanding service, and rapid delivery save our customers time. Through the years we have gained a reputation for providing reliable products with satisfactory customer service. We are the direct factory in China, using tungsten carbide with hardness up to 88-92HRA. Grades such as WF30, WF20, KG7, WF15, KG3, or specified by customers. The mirror surface is supported. We perform 100% inspection of each product to make sure every piece of products is perfect with flawless surfaces when delivering to customers. Cemented carbide as a tool material has been increasingly used for cutting tools, wear-resistant tools, impact-resistant tools, and other products with special purposes. Cemented carbide was first used in stretching mold area and has gone through cast-iron mold, alloy steel mold, diamond dies, cemented carbide dies, tungsten carbide bushings, polycrystalline module die, and other developmental stages. With the property of high wear resistance, good polishing performance, low friction coefficient, etc., cemented carbide drawing die has been a substitute for steel mold which is used to stretching steel and non-ferrous metal. Cemented carbide was first invented by Bavarians to make wire drawing dies. In other words, wire drawing die is the direct incentive of the appearance of cemented carbide. In the 1950s, the cemented carbide industry grew up in China. Since then, cemented carbide drawing die has been gradually gaining popularity in China. Currently, WC-Co cemented carbide is widely used in China, Japan, Sweden, Italy, etc. In some other counties, rare metal carbides (such as TiC, TaC, NBC, etc.) are added into cemented carbide drawing dies and its manufacturing process is also certainly different. In China, the Cobalt content in cemented carbide drawing die is basically the same as that in the Soviet Union. The traditional grade for cemented carbide drawing dies in China is almost YG8, rarely YG15 and YG6X. Later, in order to obtain better wearing resistance, the Cobalt content has to be decreased. While with the decreasing of the Cobalt content, the impact toughness and flexural strength of the cemented carbide drawing die will dramatically decline. In recent years, the Cobalt content adopted in the cemented carbide drawing die area in China is the same as that in Sweden Sandvik Umparg which is the leader of the cemented carbide industry in the world. At the same time, researchers are trying to improve the performance of cemented carbide by adding rare metal carbides. For example, researchers in Tianjin Cemented Carbide Research Institute add 1% TaC into cemented carbide drawing dies to inhibit grain growth and refine grain size in the sintering process. As a result, the service life of this kind of drawing dies is greatly longer than the general grade YG8. In Shanghai Material Factory, the Cobalt content is declined to 6% and a few TaC are added into cemented carbide drawing dies in the sintering process so that the production volume is two times that of general grade when stretching A3 steel, YIF steel, copper, etc。 #wiredrawingdies #carbidedies #hardenedsteelbushings #tungstencarbidebushings ![]() Dongguan JLS Precision Mold Parts Co., Ltd has been devoted to the processing of precision carbide components for more than 20 years. Our product scope covers precision carbide punch, carbide dies, carbide nozzles, ejector pin, stamping mold, motor connector stamping mold, etc. Tungsten Carbide Mold Components We always listen to customers’ requirements and our tungsten mold components are made to customers’ specifications. we import super hard, ISO9001 certified tungsten carbide raw material, equipped with advanced facilities, ensuring extremely close tolerances (up to 0.001mm), excellent toughness, and excellent wear&corrosion resistance. It is our commitment to make your tool long-lasting and no added costs. The increased life of wear parts can offer greater productivity and efficiency through improved performance and reduced downtime. How Tungsten Carbide Came to Be? Since the late 1800’s when a French chemist, Henri Moissan, first synthesized it, tungsten carbide has been known as one of the hardest substances in existence, approaching diamond in this respect. In fact, he was seeking to produce man-made diamonds, but WC was the result. Since large solid pieces could not be produced, cast compositions containing tungsten carbide were tried but were too brittle and porous for use as an engineered material. Search for a substitute to replace the diamond dies employed in drawing tungsten wire for electric-lamp filaments led the Osram Lamp Works of Berlin to an interesting discovery. Karl Schroeter and Heinrich Baumhauer found that hard carbide, bonded or sintered together with a metal such as cobalt, was not only hard but acquired enough toughness to suggest its use as a cutting tool. Although various carbide manufacturers use different manufacturing processes, the final product is obtained by compacting the powder formulation by some technique and sintering the constituents into a solid mass in which cobalt, or a similar metal, bonds or cement the particles of carbide together. Rigorous control is necessary throughout the manufacturing process since the quality of the final product can be greatly affected by seemingly insignificant factors. The purity, quantity, and particle size of the powdered materials must be closely watched. Mixing, milling, pressing, pre-sintering, and sintering techniques are among the factors influencing the characteristics of the finished material. Carbide should be uniform in structure and grain size, free from porosity, and of maximum density, strength, and hardness. Modifications can be achieved by using various carbides and bonding materials, by varying the proportions of carbide to the cementing matrix, and by regulating the carbide particle size. ![]() For 20 years, Dongguan JLS Precision Mold Parts Co., Ltd serves as the manufacturer of mold components: carbide dies, carbide punches, hardened steel bushings, nozzles, extrusion dies, cutting tools, precision ceramic parts according to drawings. They have advantages of: 20 years of experience; Hardness up to 88-92HRA; Narrow tolerance up to 0.001mm; Mirror Surface is supported; excellent corrosion& wear resistance, flawless finishes; 100% direct factory with export quality; Delivery time within 3-15 working days; Smooth surface by PG optical grinding available; OEM Package without logo supported. Carbide rods mainly from CB-CERATIZIT, Kennametal, Axismateria. Grades such as WF30, WF20, KG7, CD65O, AF312, as the requirements of customers. At the most basic level tungsten carbide (WC – the “W” based on the German-derived term wolfram, another name for the material and also its periodic table symbol) is an alternative for tool steels in many cutting tool applications and has been developed into an engineering material used to resist the harshest environments of corrosion, high temperature, impact, high compressive loads, deformation and severe abrasion. Tungsten carbide competes with advanced ceramics in the wear parts arena, but just as tungsten carbide has not totally displaced tool steels, advanced ceramics can’t replace tungsten carbide. That’s because tungsten carbide exhibits superior toughness given its high hardness, which has enabled it to enjoy tremendous growth as a tooling and engineering material. Tungsten carbide also referred to as cemented carbide, is a composite material manufactured by a process called powder metallurgy. Tungsten carbide powder, generally ranging in proportion between 70%-97% of total weight, is mixed with a binder metal, usually, cobalt or nickel, compacted in a die, and then sintered in a furnace. The term “cemented” refers to the tungsten carbide particles being captured in the metallic binder material and “cemented” together, forming a metallurgical bond between the tungsten carbide particles and the binder (WC-Co), in the sintering process. A Metallurgy Primer If permanent deformation of material at failure is small, the material is considered brittle. If plastic deformation is large, the material is considered ductile. Carbide is classified as a brittle material because it exhibits little or no plastic deformation preceding the initiation of a crack and total failure. Without the presence of the metallic binder, tungsten carbide could be considered a ceramic material, much the same as silicon carbide or aluminum oxide. The definition of ceramic material is the marriage of a metal to a non-metal, for example, silicon (metal) carbide (carbon, nonmetal), aluminum (metal) oxide (oxygen, non-metal), or silicon nitride. A cermet is a composite material composed of ceramic (cer) and metallic (met) materials. It is the addition of the metallic binder, i.e., cobalt or nickel that makes the cemented carbide (WC-Co) a cermet and differentiates it from truly brittle materials, that is, the ceramic family of materials. Cemented carbide is the preferred material for parts that must withstand all forms of wear (including sliding abrasion, erosion, corrosion/wear, and metal-to-metal galling) and exhibit a high degree of toughness. It exhibits high compressive strength, resists deflection, and retains its hardness values at high temperatures, a physical property especially useful in metal-cutting applications. It provides long life in applications where other materials would not last or would fail prematurely. #carbidedies #hardenedsteelbushings #carbidedies #tungstencarbidedies #punchanddie |
AuthorAbby Zhang Archives
August 2021
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