2021-03-24
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 them 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.
What Are The Commonly Used Carbide Wear Parts
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.
Summary
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.
