Tungsten carbide products used as wear-resistant parts include nozzle, guide rail, plunger, tire anti-slip nail, shovel snowboard, sweeping shovel, rotary seal ring, grinding mandrel, various pump parts, valve parts, seals, etc.

Carbide wear parts can be widely used as the carbide roller, precision molding & optical molds, stamping molds, drawings, seal ring, piston, bearing journal, and surface hardening welding, spray materials, etc.

How To Improve The Wear Resistance Of Carbide Wear Parts

The wear performance of the tungsten carbide is affected by the use of the environment and alloy performance. The wear resistance is mainly determined by the microstructure and chemical composition. The main structural parameters of the cemented carbide are that grain size and bonding phase content. The wear resistance is also affected by the added elements such as barium.

In industrial production, much important mechanical equipment and their mechanical parts are in harsh conditions, such as high speed, high temperature, high pressure, over-serving, etc., therefore, the damages of mechanical components occur frequently due to wear, corrosion, oxidation, which mostly are caused from the surface. The surface protective measures are used to delay and control the damage, which has become an effective method for solving the wear of mechanical parts. Therefore, various surface abrasion techniques for mechanical parts are adopted, such as plating, thermos, carburizing, nitriding, permeable metals, thermal spraying, surfacing, coating, pasting the hardening layer, high energy beam, etc. The rare earth has been successfully applied in the carbide wear part. When the strength and the impact toughness increase by more than 10%, the wear resistance of the carbide wear parts also has been improved.

Manufacturer Of High Precision Carbide Wear Parts – XYMJ

XYMJ has been committed to providing high-performance carbide products for mechanical industrial production. XYMJ relies on high production technology, professional production equipment, more than 20 years of experience, providing customer high-precision custom carbide wear parts on the basis of the drawings selecting superior materials to maximize the use requirements of customers for carbide wear parts.

XYMJ offers custom parts based on customer’s drawings, producing precision cemented carbide wear parts, using integral carbide materials, half-machined blank, internal threads, direct molding during the blank semi-processing. Surface fine milling can effectively control the dimensional precision machining into finished products.

The high hardness and excellent wear resistance are the basic requirements. According to the special production process of carbide parts, XYMJ adopts the professional vacuum low-pressure sintering process. When the blank is sintered into shape, the internal thread is semi-precision molding, which is convenient for subsequent finishing threaded dimensional accuracy. This is very powerful for tungsten carbide blank sintering and precisely controls the dimensional accuracy of the carbide wear parts.

The requirements for the production and processing of high-precision wear parts are strict and high, which need strong technical support and rich practical experiences with advanced equipment. XYMJ focuses on every detail of production and process, providing customized carbide wear parts, manufacturing according to high-precision applications of customers.

The superior performance of wear-resistant and corrosion make the carbide wear parts are popular in a wide range of industries. XYMJ, specializes in high precision processing and production for carbide wear parts, customized service available.

Wear-resistant components made by tungsten carbide as raw materials can be referred to as carbide wear parts, which have high hardness, strong wear resistance, wide industrial applications. Excellent wear resistance and high hardness make tungsten carbide wear parts suitable for manufacturing mechanical parts and drawing die featuring high-temperature resistance, friction resistance, corrosion-resistant.

What Is The Relationship Between The Hardness And Wear Resistance For Tungsten Carbide

Wear resistance refers to the ability to resist friction, and the tungsten carbide, which is a very widely used material, has high wear resistance. What is the relationship between the hardness and wear resistance for tungsten carbide?

In general, the higher the hardness is, the better the wear resistance. The smaller the particles of the tungsten steel has, the higher the hardness, the better wear resistance. The wear resistance of the cemented carbide is related to the contained proportion of titanium carbide, cobalt carbide. It will be higher hardness and better wear resistance, with more titanium carbide and less cobalt.

The tungsten carbide can reach 86 ~ 93hra at normal temperature, which is equivalent to 69 to 81HRC. High hardness can be maintained at 900 to 1000 ° C with excellent wear resistance. The cemented carbide has been made by a series of refractory metal carbides such as WC, TiC, NBC, and Vc with a powder metallurgical method as a binder. Compared with the superhard material, it has high toughness. Compared to high-speed steel, it has high hardness and wears resistance.

Hardness is an important performance indicator for measuring metal materials, which is the ability of a material to resist elastic deformation, plastic deformation and damage. If other factors have not been considered, the relationship between hardness and wear resistance is that the higher the hardness, the better the wear resistance. Relatively, the same material has different surface treatments, and the hardness is proportional to wear resistance.

However, the material with the best wear resistance doesn’t surely have a high hardness. For example, the hardness of cast iron which is the common wear-resistant material is not high.

Production Process Of Carbide Wear Parts

When the carbide wear parts are made, the particle size of the selected raw material powder is between 1 and 2 microns with high purity. The raw material is an ingredient according to the specified composition, and the alcohol or other medium is added to the wet ball mill for wet grinding, so that they are mixed, pulverized, dried, and sieved to add a type of molding agents such as wax or glue. Then they are dried for the mixture. The mixture granulates, the mold is heated to approaching the bonding metal melting point (1300 to 1500 ° C), and the hardened phase forms a eutectic alloy with the bonded metal.

After cooling, the hardening phase is distributed in the grid composed of bonded metal, close to each other, forming a strong whole. The hardness of the carbide wear parts depends on the content of the hardening phase and the particle size of the grain, that is, the higher the hardening phase content, the finer the grains, the higher the hardness. The toughness of the wear parts is determined by the bond metal, the higher the bond metal content, the greater the bending strength.

Applications Of Carbide Wear Parts

The tungsten carbide wear parts have a series of excellent performance, good wear resistance, high strength and toughness, heat resistance, corrosion resistance, etc., especially their high hardness and excellent wear resistance, providing powerful product support and excellent performance for industrial production, helping improve production efficiency and extend the service life of the equipment.

Applications

1.Suitable for making cast iron rolls and high-nickel-chromium rolls to repair molded knives.

2. Used for making unloading plates, stamping die, convex mold, electronic level molding, and other stamping dies.

3. In the pump, compressor and mixer, the tungsten carbide seal is applied as a mechanical sealing surface.

4. Carbide wear parts can be used on the metal ring in the spinning and weaving industry, which is to prevent rumors and displacement of phenantomers from rotating at high speeds and allows the machine to operate smoothly.

For more useful information, please visit the article page of what is carbide wear parts.

For a high-accuracy web guide system, not only you should consider the ability of web guiding, but also consider the characteristics of the coil and its movement on the machine.

The Web Offsets Which Affect The Accuracy Of Web Guide System.

Driver limits

The driver has a limit in the web guide system. All web guide systems can correct the position offset within a certain range, and this range should less than the drive limit. Most drivers have a limit of +/-75 mm. If the enter position of the web is shifted by more than 75 mm, the system will be stopped because of the movement to the limit position, and the positional offset for the portion of more than 75 mm cannot be corrected.

Instant position offset

When the lateral position offset occurs in a short period of time, this offset is known as an instant position offset which is usually occurred because the shorter length of the web is r or the high-speed web. It may also be caused by materials, machines, or process changes, for example, due to the unmembacted web switching bonding. Because this positional offset is immediate, the lateral speed of this positional offset is infinite, which is called the most challenging positional offset and the web guide system is impossible to have an infinite tracking speed. In order to improve the efficiency of the web guiding, the instant offset.

The offset of the steady-state

The offset of the steady-state is usually caused by the deviation between the web and the reel, the reel and the flat gas shaft, the discharge rack and the subsequent process centerline. Further, during the transmission process, the offset of the steady-state is also occurred due to the non-parallel guide roller, the uneven diameter guide roller, or the external force, such as the airflow. There’s not a horizontal moving speed in the offset of the steady-state. Therefore, as long as the driving limit of the actuator driver is larger than the distance of the coil offset of the steady-state, this type of offset does not affect the accuracy of the web guide system.

Web

In addition to the offset of instant position and steady-state, the web also produces progressive lateral position offset, which may be caused by various reasons, such as the non-neat or inclined side of the coil, the movement of the loose roller, the sliding or sticky milling of the web in the roller, the work conditions of the machine or process for example that the tension, speed, lubrication, or temperature change will interfere with the mechanism of the coil transmission.

Web guide system itself

The web guide system may also cause the web offset. If the control loop is not adjusted well and the blind zone of the probe is too large, or the driver is loose, then the web guide system will cause the offset of the web. There are several important indicators for web guide system installation, which include calibration width, winding angle, the position of the swing center and the direction of swing.

Conditions & Features The Web Guide System Should Satisfy For The Highest Accuracy

Usually, the precision of 0.3 mm can meet most of the applications, which is also the accuracy that most of the web guide system can achieve with general settings. But to achieve 0.1 mm or higher accuracy, coil, web guide machine, and equipment must meet some requirements.

Conditions of the web guide system and coils should satisfy

1. The input of the web offset is a type offset of the steady-state.

2. The input of the web offset ranges within the driver limit.

3. Prouch, rebound, or probe of the connector is small enough.

4. The initial push power of the driver is large enough.

Features of the web guide system should satisfy

1. Inverse second of 40 seconds

2. The maximum lateral positional offset is less than 4 mm / second, at the speed of 25 meters/minute and the lateral offset angle is less than 6 degrees.

3. The frequency of any coil rack or the horizontal cycle is less than 6.4 Hz.

Large system gain, the quick response speed of the driver, the smallest loose connection & drivers rebounded, will do a great favor for the high-precise web guide system.

High accurate web guiding system will help greatly improve productivity and reduce production waste. As a web guide system manufacturer, the question you will be asked commonly is that what is the accuracy of your web guiding? The answer always will be doubted, because the definition of the accuracy of the web guide systemvaries for different people. Before learning the accuracy of the web guiding system, there’s a simple question that why the web guide system is required?

Why web guide system Is required?

The edges or center lines of the process of coating, printing, compounding, dividing, and winding, otherwise, the transverse dislocation of the coil will cause the waste or even downtime. This is why the web guide system is required. It is the technique which will always coil side is neat and consistent. Usually, the tracking method of the web guide includes three types of edge, center and line.

What determines the accuracy of web guide system

The accuracy of the web guide is determined by three factors: the deviation of the invasive web, the accuracy of the web guide system, the installation accuracy of the system. Further, the unique features of the coiling are that the deviation of the invasive web, the lateral movement or swing size of the coil, which are important factors in determining the accuracy of the web guide.

The definition of the accuracy of web guide system

The web guide machine is typically upstream of a critical process, and the closer the process is, thus the maximum reduction in position deviation errors when entering the critical process. As a manufacturer of web guiding, need to follow the edge, center, or line position of the coil just from the probe. So it is recommended that installing the machine in the location closest to the key process.

For more professional knowledge, please visit the article page of The accuracy of web guide system.

With high hardness, excellent wear resistance & corrosion resistance, tungsten carbide has a high performance in the high-tech manufacturing field which has a strict requirement of quality, stability and reliability.

Characteristics of tungsten carbide

1. High hardness and wear resistance. Generally, between HRA86 ~ 93, decreases with an increase in cobalt.

2. Thermohardening. Under the temperature of 500°C is basically unchanged and there is still a high hardness at 1000°C.

3. High anti-bending strength. The bending strength at normal temperature is between 90 and 150 MPa and the higher the cobalt, the higher the anti-bending strength.

4. More stable chemical properties. Carbide material has acid-resistance, alkali-resistant, and even significantly oxidation even at high temperatures.

5. High thermal conductivity. Cemented carbide has higher thermal conductivity than that of high-speed steel, which increases with the increase of cobalt.

6. The coefficient of thermal expansion is relatively small. It is lower than high-speed steel, carbon steel and copper, and increases with the increase in cobalt.

The manufacturing method of tungsten carbide

The production of the cemented carbide is to mix tungsten carbide and cobalt in a certain proportion, pressurize into various shapes, and then semi-sintered. The sintering temperature is 1300-1500°C.

When manufacturing cemented carbide, the selected raw material powder has a particle size between 1 and 2 microns, and the purity is very high. The raw materials are mixed according to the specified composition ratio, and the medium is added into the wet ball mill to wet-grind them for making them fully mixed and crushed. After drying and sieving, the forming agent is added, and then the mixture is dried and sieved. Then, when the mixture is granulated and pressed, and heated to close to the melting point of the binder metal (1300-1500°C), the hardened phase and the binder metal will form a eutectic alloy. After cooling, a solid whole is formed. The hardness of cemented carbide depends on the hardened phase content and grain size, that is, the higher the hardened phase content and the finer the grains, the greater the hardness. The toughness of cemented carbide is determined by the bond metal. The higher the content of the bond metal, the greater the bending strength.

Hardness test of tungsten carbide

The cemented carbide is a metal, which can reflect the difference in mechanical properties in chemical components, tissue structures, and heat-treatment process. Therefore, the hardness test is widely used in the inspection of carbide properties, which can supervise the correctness of the heat treatment process and the research of new materials. The hardness detection of tungsten carbide mainly uses a Rockwalk hardness tester to test HRA hardness values. The test has a strong shape and dimensional adaptability of the test piece with high efficiency.

For more professional knwoledge, please visit the introduction page of tungsten carbide knowledge.

Lube Oil Purifier Application:

• Marine fuel oil treatment ( diesel, Lube, HFO purification )

• Fuel Oil Process industry

• Lube Oil Processing

• Waste oil industries

• Bio-Diesel / VCO industries

Advantages of Lube Oil Purifier

Powerful, productive and cost-effective

Removes both water and solids in one operation

Effective cleaning of even small particle sizes

Minimal maintenance, enabling more process uptime

Prolongs equipment lifetime

Low total cost of ownership (TCO)

The water is released while the contaminating solids are stored separately. If your processes result in low amounts of solid waste, you can generally remove it manually. Higher waste amounts are automatically cleaned. Yuneng Lube oil purifier can also handle large cleaning volumes and a temporary high influx of water.

A ship has hundreds of machinery and systems which helps in its day to day operations.

Lubrication plays a vital role in the smooth running of this machinery by overcoming and reducing heat, neutralizing acid combustion by-products, preventing scuffing, lessening friction and thereby combating wear and tear between two running surfaces.

The main engine lube oil system on ships ensure lubrication of the main bearings through pumping of lube oil by duplex oil filters, to the crossheads, and guides, piston cooling and bottom end bearings through the swivel jointed pipes in the engine casings.

The engine cylinders have their own lube oil system, which lubricates the surfaces between the cylinder wall and the piston rings through a set of concentric nozzles or quills fitted around the cylinder liner.

There are various properties of lubricating oils to be maintained, such as viscosity, volatility, alkalinity, oiliness, detergents.

It is imperative to maintain the lubricating oil’s properties and to ensure it is in good condition.

Therefore, we need a Lube oil purifier on ships for proper purification of lube oil with minimum throughput or batch purification in case of heavy contamination.

Removes impurities and restores / improves the electrical, chemical and physical properties of transformer insulating oils. This oil is an integral part of most large power transformers.  It serves two major roles, as a cooling agent and as an electrical insulator between internal components. Contamination of this oil compromises the insulating properties and leads to premature failure of the transformer. This contamination can be in the form of water, dissolved gases, or foreign particles. By processing this oil with a vacuum dehydration unit like the Yuneng Transformer Oil Purifier, this contamination can be removed returning the insulating oil to its original specifications.

The system incorporates high vacuum and mechanical filtration to dehydration, degasification and filter contaminated oil. Engineered with functionality and versatility to meet a wide range of applications with features such as: an inlet pump capable of drawing oil from long distances and low elevations, a unique multi-level vacuum chamber design for rapid degasification, a sophisticated heating control scheme to ensure safe and efficient processing of the contaminated oil, and a variable speed outlet pump to return the processed oil to the transformer being serviced. Control, monitoring, and user interaction are accomplished through an industrial grade touchscreen operator interface. All parameters are easily viewed and adjusted through this interface along with viewing of current and historical data.

Here is we have listed some advantages for transformer oil purifier:

Improved insulation properties of the oil and hence the other media like paper/cellulose insulation

Better the insulation of transformer, longer the life of the transformer and lesser the breakdown of the transformer

Longer the life of the transformer asset, good returns on investment of the asset

Lesser breakdowns and failure of the transformer results in uninterrupted power supply

The YUNENG transformer oil purifier can achieve transformer oil thoroughly dehydrated and remove fine toner. Restore transformer oil to return to raw performance. We have a variety of transformer oil purifiers to choose from, for example, a small online on-Load tap changer (OLTC) transformer oil purifier machine, intelligent transformer oil purifier. Each type of oil purifier has its own features, you can choose from in your own needs.

The increasing rating requirements of modern transformers and electrical apparatus results in greater electrical stress in insulating material and fluids. In order to handle these greater stresses, oils are required to have better dielectric strength, and lower residual water content must be maintained. The timely and proper treatment of these insulating fluids will result in the improvement of the properties of the entire insulating system of power transformers. The principal functions of the insulating fluid are to serve as a dielectric material and an effective coolant. To perform these functions, the insulating fluid must have specific necessary qualities at the time of initial impregnation and filling at the factory which must be maintained at the same quality level in field operation if optimum performance is to be assured.

Almost 75 percent of the transformer failures happen due to contaminated and deteriorated oil. It is important to filter the transformer oil. Regular maintenance is of utmost significance as it is a great financial burden to replace or repair the transformer. Ignoring transformer oil filtration can lead to:

Arcing

Overheating, which reduces electrical efficiency as well as the life of the transformer

Corona Discharges

Decrease in insulating strength of the transformer oil, and more.