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Carbide roll (also called tungsten carbide roll ring), is a kind of high hardness, high wear resistance tool composed of tungsten carbide, cobalt and bonding metal materials. Used for rolling nonferrous metal flat wire, stainless steel wire, iron wire, copper wire, nickel, copper tube, aluminum tube, shrinkage tube inner die.
There are a lot of customer feedback that when hard alloy roll in the rolling, there will be cracks, it is not durable, how to avoid this situation?
Zhuzhou Jinxin takes you to solve this problem, in order to prevent the micro-cracks in the rolling groove, first of all, the roller needs to be on the same frame with the same roller diameter of the roller ring diameter difference should be 0, at most not more than + -0.05mm, followed by the recommended normal rolling volume to roll, reach a certain depth (generally controlled in 0.2mm) when the need for grinding.It can be repaired for three times, and the service life after repair remains unchanged.
Excessive rolling leads to the rapid expansion of the depth of micro-cracks and the increase of the risk of broken rolls, which should be prohibited.
The selection range of normal rolling quantity is as follows:
1. Prefinishing mill stand :(3500-4000) tons
1, finishing rolling 1-2 :(1800-2500) tons
2. Finishing rolling 3-4 PCS :(1800-2500) tons
3. Finishing rolling 5-6 PCS :(1500-2000) tons
5, finishing rolling 7-8 :(1500-2000) tons
6, finishing rolling 9-10 :(600-1200) tons
7. Reduction of sizing frame :(600-1200) tons
Our company produces tungsten carbide roller with superior processing performance, stable quality and high processing accuracy.
Any interested items please feel free to contact:
Contact: Julia
Mob:+8618073319589
Wechat:18073319589
Whatsapp/Skype: +8618073319589
E-mail:sales06@jxcarbide.com
A tungsten carbide roller is a roll made of tungsten carbide and cobalt etc. by powder metallurgy method. There are two types of carbide rolls: integral type and combined type. It has excellent performance, stable quality, high precision, good wear resistance, and high impact resistance.
Here is the content list:
l The concept of cemented tungsten carbide roller
l Performance of tungsten carbide roller
With the increasingly fierce competition in the steel product quality and price market, steel companies are constantly updating their equipment technology to improve the rolling speed of mills; At the same time, how to reduce the number of mill downtime and further improve the effective operation rate of mills has become an important issue of concern to steel rolling engineers. The use of roll materials with higher rolling life is one of the important means to achieve this goal.
Tungsten carbide rollers have been commonly used in the production of bars, wire rods, rebar, and seamless steel pipe because of their good wear resistance, high-temperature red hardness, heat fatigue resistance, and high strength, which has greatly improved the effective operating rate of the mill. According to the differences in the working environment of each stand roll, various grades of tungsten carbide roller rings have been developed.
Tungsten carbide rollers have high hardness, and their hardness value changes little with the temperature, the hardness value at 700 ℃ is four times that of high-speed steel; and the modulus of elasticity, compressive strength, flexural strength, thermal conductivity are also higher than tool steel more than 1 times. Because of the high thermal conductivity of carbide rolls, so the heat dissipation effect is good, so the roll surface is at high temperature for a shorter period, so that the rolls with the cooling water of harmful impurities in the high-temperature reaction time are shorter. Therefore, carbide rolls are more resistant to corrosion and hot and cold fatigue than tool steel rolls.
Tungsten carbide rollers are developed based on cemented carbide tools, which is a kind of metal-ceramic tool material prepared by powder metallurgy with refractory metal compounds (WC, TaC, TiC, NBC, etc.) as the matrix and transition group metals (Co, Fe, Ni) as the bonding phase. It has a series of excellent properties such as high hardness, high red-hardness, and high wear resistance. Sometimes a certain amount of nickel, chromium, and other elements are added accordingly to obtain corrosion resistance.
The performance of cemented carbide rolls is related to the content of the bonding phase metal and the size of the matrix phase - tungsten carbide particles. Different binder content and corresponding tungsten carbide particle size form different grades of cemented carbide. Tungsten carbide has been developed as a series of carbide grades for different sorties. tungsten carbide accounts for about 70% to 90% of the total composition mass in carbide, and its average particle size is 0.2 to 14 μm. If the metal binder content is increased or the particle size of tungsten carbide is increased, the hardness of carbide decreases, and the toughness increases. The bending strength of carbide rolls can reach more than 2200 MPa, impact toughness can reach (4-6) × 106 J/m2, and Rockwell hardness HRA is 78-90.
Our official website is https://www.7jinxin.com/. If you are interested in buying a tungsten carbide roller or you are interested in learning about a tungsten carbide roller ring. You can go to our official website to learn more about our company, and you can communicate with us on the website. Our cost-effective products are deeply loved by everyone. We are looking forward to working with you.
Tungsten carbide rotary burrs are mainly composed of hard phase tungsten carbide and bonded phase cobalt, which is also known as tungsten carbide burr bits, mold milling cutters, etc. It is mainly used with a high-speed electric grinder and wind tools. Since its machining hardness can reach above HRA85, it is thus well suited to most materials, such as common cast iron, cast steel, copper, aluminum, marble, alloy steel, carbon steel, and other metal or non-metal materials. The working principle is that the tungsten carbide rotary burrs are clamped on a high-speed rotating tool and the cutting effect is achieved by the pressure and feed rate to which it is subjected. Tungsten carbide burr bits have excellent cutting performance and long life has a wide range of applications, such as for the finishing of metal mold cavities; For castings, forgings, weldments of the existence of the flying edge, burr, weld cleaning; Chamfering of a variety of mechanical parts, grooves, and keyway processing; Pipes, runners, parts of the inner hole surface cleaning and grinding; A variety of metal or non-metallic materials, such as engraving.
Here is the content list:
l Classification of tungsten carbide rotary burrs
l How to improve the performance of tungsten carbide rotary burrs
l Advantages of tungsten carbide rotary burrs
According to their head shape tungsten carbide rotary burrs can be divided into cylindrical (A), cylindrical head shape (C), round head arch shape (F), round ball shape (D), round head torch shape (H), 90° conical shape (K), 60° conical shape (J), 38° conical shape (M), arc disc shape (T), inverted cone (N), conical round head (L), conical tip (M), waist drum shape (B), oval shape (E), The tapered head (L), tapered tip (M), waist drum (B), oval (E), a curved arrow (G), conical flat head (S), cylindrical arc half-head (W), etc. The commonly used tungsten carbide rotary burrs grades are YG6, YG8, and YG10X.
To further improve the cutting performance and extend the service life of our tungsten carbide rotary burrs, we analyze them from their cutting and forming principles. Generally speaking, the tooth back of a tungsten carbide rotary burrs is composed of a straight line or curve: a straight line tooth back is easy to process, but the strength of its teeth is weak; The strength and processing difficulty of folded line tooth back is increased; The production difficulty of the curved tooth back is higher, but it can ensure the strength is basically equal in any cross-section point. Therefore, we need to study a tooth back that can be easily produced based on ensuring the strength of the tooth. Secondly, when the hardness and strength of the teeth meet the requirements, it is also necessary to pay attention to the tooth spacing. The size of the tooth spacing also plays a very critical role, its spacing is too large, the corresponding cutting performance and processing efficiency are reduced; If its spacing is too small, it can not ensure rapid chip removal, resulting in blockage of the cutter teeth, affecting the processing effect of the rotary file. The whole milling process can be divided into three stages, namely the initial wear stage, normal wear stage, and sharp wear stage. In each different stage the reasonable selection of tooth angle (front angle, back angle, main deviation angle, vice deviation angle, and edge inclination angle), can reduce the cutting force and cutting heat brought about by the wear, in the same cutting conditions, give full play to the cutting performance, improve the overall efficiency and machining accuracy. In general, for the rotary file material and rotary file edge teeth to improve, the material should have high hardness, high strength, high wear resistance, and good impact resistance and can still ensure excellent cutting performance under high-temperature conditions, but also facilitate processing; And the tolerance accuracy of the edge teeth to be accurate enough, the surface roughness to meet the established requirements. In addition, the new carbide staggered teeth have the characteristics of a short chip, smooth and high finish, and easy to operate, which can effectively improve the machining efficiency and machining accuracy of tungsten carbide rotary burrs.
Tungsten carbide rotary burrs are extremely versatile and are used in mold processing and manufacturing. Chamfering, rounding, and groove processing of mechanical parts, cleaning up the flying edges, burrs, and welds of the cast, forged, and welded parts; pipe, impeller runner finishing processing, metal and non-metallic materials (bone, jade, stone) arts and crafts carving.
Tungsten carbide rotary burrs is an indispensable advanced tool for pincers and mold makers, which is characterized by replacing small grinding wheels with handles and no dust pollution, with a service life equivalent to several hundred small grinding wheels with handles, and a processing efficiency increased by more than 5 times, grinding various metal and non-metal materials with hardness below HRC70, with a grinding surface roughness up to RAl.6, easy to grasp, simple to use, safe and reliable, greatly reducing the heavy It is easy to grasp, simple to use, safe and reliable, and greatly reduces the heavy manual labor and production costs.
In general, tungsten carbide rotary burrs are the company's main product. For consumers, tungsten carbide burr bits are effective. The company will be more committed to producing more and better tungsten carbide rotary burrs for consumers. if you are interested in the business of tungsten carbide rotary burrs, you can go to our website for consultation, our website is https://www.7jinxin.com/.
Tungsten carbide powder for manufacturing tungsten carbide mold is in high demand in many industries in China. To meet the demand as well as the quality requirements, the technology of tungsten carbide powder for manufacturing tungsten carbide mold has been continuously improved by external forces, as well as the quality characteristics of the material itself. Because the carbide stamping dies in the working process of sliding fit parts and frequent impact parts are subjected to wear and tear for a long time and affect the quality of the die, the raw material tungsten carbide powder has high hardness, strength, wear-resistance, and corrosion resistance, which is a very important factor to improve the quality of the die. Tungsten carbide mold design should ensure that the mold parts have sufficient strength and stiffness, and the selected material tungsten carbide powder with high hardness and other characteristics can meet the customer's requirements for product quality. After the corners of the carbide parts made of this raw material are designed to be rounded and filtered, it can avoid stress concentration, and for the parts made: concave die, cavity and part of convex die and core have the role of protection in the structure. This improves to a large extent the technical content and high-quality stability of the manufactured products.
Here is the content list:
l Tungsten carbide mold uses.
l Classification of tungsten carbide molds
1、A large number of high-speed cutting tools, furnace structure materials, jet engine parts, metal-ceramic materials, resistance heating elements, etc.
2、The carbide dies used in the manufacture of cutting tools, wear-resistant parts, copper, cobalt, bismuth, and other metals melting crucible, and the wear-resistant semiconductor film.
3、The carbide dies are Used as super-hard cutting tool material al, wear-resistant material. It can form a solid solution with many carbides. WC-TiC-Co cemented carbide tools have been widely used. It can also be used as a modified additive of NBC-C and TaC-C ternary system carbides, which can reduce the sintering temperature and maintain excellent performance, and can be used as an aerospace material.
4、Tungsten carbide powder is synthesized by using tungsten anhydride and graphite in a reducing atmosphere at a high temperature of 1400-1600℃. Then by hot pressing sintering or hot isostatic sintering can be produced dense ceramic products.
To facilitate the selection of tungsten carbide mold materials, the molds are usually divided into three categories: Cold work molds, hot work molds, and cavity molds according to the working conditions.
(1) Cold work mold: According to the process characteristics, the cold-work dies can be divided into two categories: Cold punching dies and cold deformation dies. Cold cutting dies mainly include various thin plate cold cutting dies and thick plate cold cutting dies; Cold deformation dies mainly include various cold extrusion dies, cold upsetting dies, cold drawing dies and cold bending dies, etc.
(2) Hot work die: Hot work die can be divided into three categories: Hot punching die, hot deformation die, and die-casting die. Hot punching dies to include a variety of hot cutting edge die and hot cutting material dyings; Hot deformation dies including a variety of hammer forging dying, press forging die, and hot extrusion dies; Die-casting dies including a variety of aluminum alloy die-casting die, copper alloy die-casting die and ferrous metal die-casting die.
(3) Cavity mold: According to the different forming materials, cavity molds can be divided into plastic molds, rubber molds, ceramic molds, glass molds powder metallurgy molds, and so on.
Our official website is https://www.7jinxin.com/. If you are interested in buying a tungsten carbide mold or you are interested in learning about carbide dies. You can go to our official website to learn more about our company, and you can communicate with us on the website. Our cost-effective products are deeply loved by everyone. We are looking forward to working with you.
Tungsten copper bar is a combination of tungsten and copper.
The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.
Because of the high eletrical conductivity and low consumption, tungsten copper bars are widely used to make Grid siderod, Lead, Support, Electrode for the Gas discharge lamp.
What are the advantages of non-magnetic alloy mold?
Non-magnetic alloy is not magnetic or with a very weak magnetic carbide materials. For manufacturing magnetic materials forming mold require the use of magnetic material, most is the production of no magnetic steel on the market before, so we all use without magnetic steel mold, but not the performance of the magnetic steel mould is not good, and the hardness is low, service life is not long, according to feedback, no magnetic steel mold after long time use, its deformation of wall faces serious galling, wait for a phenomenon, Thus, the dimensional accuracy and surface quality of magnetic materials are affected.
And now the use of non-magnetic tungsten carbide mold, has excellent performance, such as high wear resistance, corrosion resistance, hardness, gradually replace the non-magnetic steel mold, magnetic hard alloy mold greatly improve the work efficiency.
At present, the manufacturing industry needs high-performance mold products, which can only improve production efficiency and promote economic development, and is also an important means of development. In the oil industry, the high quality of the foundation of peace and stability of the equipment manufacturing industry is to guarantee the safety in production equipment, so for the non-magnetic alloy mould product performance requirements strictly, this also reflected without magnetic hard alloy moulds in the oil industry, aerospace, automobile industry in the areas of application, in the process of the development of these industries play an important role. According to the difference of products, non-magnetic alloy mold products are customized alloy mold products according to special requirements.
Any interested items please feel free to contact:
Contact: Julia
Mob:+8618073319589
Wechat:18073319589
Whatsapp/Skype: +8618073319589
E-mail:sales06@jxcarbide.com
Why is tungsten cobalt carbide studs damaged?
Tungsten-cobalt carbide stud has the advantages of wear resistance and high hardness, but the anti-shear ability is slightly weak. There will also be damage in the process of use, such as fracture or accelerated wear and tear. In the production and operation of the studded-roller, the studded-roller is subjected to severe high stress abrasive wear, shear force damage and long-term fatigue damage. In the operation process, the studded-roller will fracture, peel off and serious wear problems, thus affecting the output and service life of the roller press. The common reasons for the damage of tungsten cobalt carbide stud are summarized here.
1. Applicability and quality of the studs grade. In the selection of cemented carbide brand, the selection must be carried out according to the abrasive properties of the materials in the actual working conditions, and the performance index such as hardness, bending strength and impact toughness must be selected as the most appropriate brand.
2. Abrasive wear. With the repeated operation of the roller press, the cyclic formation and damage of the protective layer of the material cushion cause the wear of the studs particles.
3. Shear force damage. Although the cemented carbide column studs has ultra high wear resistance, but its shear resistance is poor, under the impact of large materials, cemented carbide column stud is bound to fracture, drop Angle, wear and other phenomena, so it is very important to control the size of the material.
The above is the common reasons and solutions for tungsten-cobalt cemented carbide studs damage, hoping to help you reduce the probability of cemented carbide studs damage and improve the service life of cemented carbide studs. High quality carbide studs please choose Zhuzhou Jinxin produced.
Any interested items please feel free to contact:
Contact: Julia
Mob:+8618073319589
Wechat:18073319589
Whatsapp/Skype: +8618073319589
E-mail:sales06@jxcarbide.com
In terms of applications, Tungsten Rods are widely used in military, defense, aerospace, aviation, marine, lighting, automotive, and other fields. When processed into filaments, Tungsten Rods can be used as filaments, support wires, and lead wires; they can also be ground into needles, manufactured into various electrodes, high-speed tools, and sputtering targets. Next, let's take a look at the tungsten alloy rod. Here are some answers.
Here is the content list:
l The diverse production techniques of Tungsten Rods.
l Tungsten Rods are analyzed in terms of their physicochemical properties and production technology respectively.
Tungsten Rods can be produced in a variety of different ways, depending on their chemical composition. For example, tungsten-nickel-iron alloy rods can be produced using either powder metallurgy or injection molding techniques, both of which have their advantages and disadvantages. Powder metallurgy is the process of forming and sintering various types of products from metal powders; it allows for automated mass production and thus, can effectively reduce the resources and energy consumption of production. Injection molding is a technique in which a model of a certain shape is injected by pressure into the mold cavity with a molten colloid to produce the desired product. The tungsten-copper alloy bar is usually manufactured using the copper infusion method, whereby the tungsten powder is first pressed and sintered into a tungsten skeleton with a certain degree of porosity, and then fused with copper elements in a series of operations.
In terms of physicochemical properties, Tungsten Rods combine the characteristics of tungsten and binders, such as high melting point, high density, high hardness, high strength, low coefficient of thermal expansion, and high modulus of elasticity, wear resistance, high-temperature resistance, and good electrical and thermal conductivity. The specific physical and chemical properties of the alloy are also related to the proportion of raw materials. When the binder is metallic copper, the color of the alloy will tend to be more coppery as the copper content increases. As the copper content increases, the melting point, density, and hardness of the alloy will be reduced, while the electrical and thermal conductivity will be better.
In terms of production technology, a tungsten carbide rod with different chemical compositions is produced in different ways. For example, tungsten-nickel-iron alloy rods can be produced using either powder metallurgy or injection molding technology, which refers to the process of forming and sintering various types of products from metal powders as a raw material. Injection molding is a technique in which a model of a certain shape is injected by pressure into the mold cavity with a molten colloid to produce the desired product. Tungsten copper alloy rods are usually manufactured by the copper infusion method, whereby tungsten powder is pressed and sintered to form a tungsten skeleton with a certain degree of porosity, followed by a series of operations such as fusion infusion of copper elements.
If you are interested in Tungsten Rods, you can contact us at https://www.7jinxin.com/, we welcome you and look forward to cooperating with you. Changsha Jingxin Cemented Carbide Co., Ltd. is a blueprint for development, focusing on the development of cemented carbide, and mining machinery the company's main focus is on the development of cemented carbide, and mining machinery, engineering tools, automotive parts, new energy, and leisure sports equipment.