Tungsten carbide is widely used in various industries due to its unique high hardness and strong wear resistance. What are its common applications?
1.Cutting tools
Tungsten carbide can be used as a variety of cutting tools. Because of its high hardness and strong resist compression performance, tungsten carbide is one of the best material choices for cutting tools. The tungsten carbide cutting tools include carbide drill bits, small circular saw blades, carbide rotary burr and so on. As the material of cutting tools is the most widely used field for tungsten carbide.
2. Mining tools
The cemented carbide for mining accounts for about 30% of the total tungsten carbide production. Thanks to the high hardness, strong impact toughness, outstanding bending strength and excellent wear resistance, carbide mining tools are usually applied in geological exploration drill bits, roller cone drills and coal cutters for petroleum and gas fields, engineering excavation road tools, percussion drilling in the building materials industry.
3. Tungsten steel mold material
Under normal circumstances, the proportion used in the manufacturing of various molds accounts for about 8%, which includes carbide drawing dies, cold heading dies, cold punching dies, cold extrusion dies, hot forging dies and drawing mandrels. Usually, the cemented carbide applied for making molds is selected from medium and high cobalt, coarse grain grades.
4. Wear parts
The tungsten carbide wear parts include carbide nozzles, carbide balls, tungsten carbide valve seat & valve sleeves, carbide tire cleats, carbide guide rails and so on.
5. Structural parts
The carbide structural parts include rotating seal ring, lathe head, grinding machine spindle, bearing, etc, which can effectively solve the problems of mechanical seal ring thermal cracks.
Trustworthy Tungsten Carbide Manufacturer - XYMJ
XYMJ has focused on the production and processing of tungsten carbide products for more than 20 years, the products including carbide dies, bushings, valve seats, inserts & cutting tools, carbide rods and bars, carbide plates & strips and other customized tungsten carbide wear parts. It has superb blank forming and precision machining capabilities with high performance and a low-cost advantage. It has a grinding machine for smooth finish, frosted finish, concave finish, and convex finish, which can better satisfy customer's requests.
High performance of tungsten carbide, in addition to high hardness, there are also excellent wear resistance, corrosion resistance, high-temperature resistance, etc and can be used as cutting tools, mining tools, wear parts, etc, which are also the reasons for wide applications in various industries.
Tungsten carbide is an alloy which has the main components of tungsten carbide powder with metal bender. It is widely used for manufacturing high-speed carbide cutting tools for hard, tough materials. The high-performance tungsten carbide has excellent characteristics.
1. High hardness and excellent wear resistance
The hardness of cemented carbide can reach 86 to 93HRA, which is equivalent to 69 to 81HRC. High hardness can be maintained at 900-1000 ℃ with excellent wear resistance. Compared to high-speed steel, the cutting speed can be 4-7 times higher with 5-8 times service life, which can cut hard material with a hardness of 50 HRC.
2.High strength and high elastic modulus
The tungsten carbide has a compressive strength of up to 6000 MPa and an elastic modulus (4 ~ 7) × 105 MPa, which both are higher than high-speed steel. However, its bending strength is low, typically 1000 ~ 3000MPa.
3. Excellent corrosion resistance and oxidation resistance
It is generally resistant to atmospheric, acid, alkali and is not easy to oxidize. There is a wide range of applications in the industries of fluid and chemical, such as various valves used for fluid control including regulating valves, black water valves, lock slag valves, and decompression noise reduction valves, etc.
4.Small linear expansion coefficient
When the tungsten carbide products are working, the shape size the stable
5.The finished products are no longer processed with re-grinding
Due to the high hardness and brittleness, the powder metallurgical formation is no longer cutting or re-grinding, and when the demand is re-processing, it can adopt electric sparks, line cutting, electrolytic grinding and other electric processing or special grinding wheel cutting. It is usually used by a certain specification paper made of cemented carbide, adopting brazing, bonding or mechanical clamping for the blade body or mold.
How To Improve The Performance Of Tungsten Carbide
In order to adapt to the harsh environment under different working conditions, tungsten carbide often needs to be reprocessed to make corresponding changes for the original performance, so what are the methods to change the performance of tungsten carbide?
1. Improve the quality of raw materials
Improve the purity of raw materials
High-strength, high-impact toughness alloys have high requirements for the purity of raw materials, while continuous cutting tool with low impact load but high machining accuracy, have low requirements for raw material purity.
Control the particle size and distribution of raw materials
It should avoid excessively large particles in the carbide or cobalt powder raw materials, and prevent the tungsten carbide from forming coarse carbide grains and cobalt pools during sintering.
At the same time, the size and composition of the particle materials should be controlled to meet the needs of different products. For example, carbide cutting tools should adopt tungsten carbide powder with a fisher particle size of less than 2 microns, wear-resistant tools should use tungsten carbide powder with a particle size of 2-3 microns, and mining tools should adopt tungsten carbide powder with the particle size of larger than 3 microns.
2. Improve the structure of the tungsten carbide
3. Improve or select new hard phase and binder phase
The performance of tungsten carbide is affected by the composition and structure of the hard phase and the binder phase. Generally speaking, when the content of the hard phase is high and the grains are finer, the hardness is high and the wear resistance is good, with poor impact resistance. Improving the hard phase and the binder phase is one method to change the performance.
4. Surface hardening treatment
To solve the contradiction between wear resistance and toughness, hardness & strength of tungsten carbide, surface hardening treatment can be adopted.
The coating is physically or chemically depositing a layer of TiC or TiN on the surface of the cemented carbide to increase the wear resistance. The most rapid development at present is the coated tungsten carbide.
5. Add elements or compounds
6. Heat treatment
For more useful knowledge, please visit the article page of high performance tungsten carbide
Here, we'll introduce the common problems that occur in the solvent-free composite and the effective solutions. Adopting the solutions can greatly improve the work efficiency of the solventless laminator.
Knife Line
The main reason is that the coating units are not cleaned up. At this point, the coating unit should be downtown, or the transfer roller is changed, and the blanket is eliminated.Poor Drying Of Adhesive
1. The adhesive is not configured in accordance with the correct matching requirements.
2. The adhesive has not been working.
3. Mixed glue contains moisture content or a large amount of ethyl acetate.
Composite Membrane Bubble
1. Since the material is not smooth and the ink particles are thick, the glue coating is insufficient. It should use high-quality materials or increase coating.
2. CO2 generated in curing cannot form in a film which has a good barrier property, mainly due to the use of a single-component solventless. So it should use a two-component adhesive.
3. The surface wettability is poor. It should increase the surface wetting tension of the material and improve the wettability of the adhesive.
4. Transfer roller is attached with foreign matter or scars and should be scrapped with bamboo pieces.
Poor Adhesion
1. The adhesive coating is too much, and the Internal curing of adhesive is slow.
2. When using a single-component adhesive, the humidification moisture content is insufficient.
3. The amount of coating is too small and the infiltration of the surface is incomplete.
4. Poor solubility of the ink and the adhesive, such as using polyamide ink.
Here, we give a detailed analysis of the undesirable phenomenon in the solventless composite and solventless laminating machine, such as the uniform winding, poor coating effect, etc and how to solve the problems.
Poor Coating Performance
1. The pressure of the transfer roller is not enough.
2. Mechanical brake adjustment error of transfer roller.
3. The coating roller is not clean well.
4. The poor finish of the glue pressure roller, the transfer roller, or the composite roller.
Poor Coating Performance Of Thin Film Edge
1. The adhesive close to the baffle does not replace for a long time, as long as it often swings the spray nozzle to maintain the adhesive fresh.
2. The coated pressure roller of the composite roller has glue or other impurities.
Uneven Section Of Rewinding
1. The glue amount is too large.
2. The cooling performance of the back film roll which is from the composite roller, is poor.
3. Tension is not suitable.
4. The flatness of the squeeze roll in the rewinding is poor.
5. The glue coating amount in the left and right sides of the film is too large and it is best to control the difference within 0.2g.
6. The paper core is not aligned with the film.White Spot
1. Low glue coating
There is not enough adhesive to penetrate into ink. At this time, it appears as a small and uniform spot in the entire composite film. The solutions are to appropriately increase the amount of glue and adjust the composite temperature and composite pressure.
2. The glue portion, the composite portion of the rollers have a poor surface finish. At this time, it is expressed as partial intermittent repeated spots. It can be judged by measuring the spacing of the two spots to find which rolls have foreign matter and clean up.
3.The tension of substrate film is uneven and wrinkles before entering the composite roller, resulting in poor partial composite performance, and the bubbles will appear, the macroscopic manifestation is a white spot. The solution is to adjust the deflection roller and keep the film neat before entering the composite roller. The tension can be appropriately adjusted or replace film.
4.The pressure of the composite portion of the glue portion is not properly set.
5. The solubility of the ink and adhesive is not good, white spots will occur at no adhesive penetrated ink, and the suitable adhesive or ink should be replaced.
For more information, please visit the article page of the undesirable phenomenon in solventless composite.
Tungsten carbide material has good conductivity, thermal conductivity and corrosion resistance with high density of 16 g/cm3 to 18.5 g/cm3. It has very good mechanical strength, small coefficient of thermal conductivity and elastic coefficient. XYMJ is a professional carbide manufacturer, providing excellent quality custom tungsten carbide parts with advanced equipment and strict quality control, the most competitive price guaranteed.
Tungsten Carbide Roller
Tungsten carbide roller has superior performance, stable quality, high precision, good wear resistance and high impact resistance. Carbide roller has high hardness, which is not affected by environmental or external temperature change, therefore it can be used in an extremely hot or cold environment.
Features
1. Excellent surface mirror finish.
2. High hardness, round HRA 87 or even to HRA91.
3. High wear resistance and corrosion resistance.
4. The service life of tungsten carbide is 50 times longer than common steel tools.
Tungsten Carbide Bush
Tungsten is known for its high melting point and durability. It’s also resistant to corrosion, which is ideal for industrial and manufacturing use. Likewise, bushings made from carbide offer an outstanding shelf life. That means you’ll spend less time switching out worn-down bushings, and more time getting the job done. In terms of stamping dies, carbide bush is widely used. Because of its wear resistance and good surface finish, it does not need to be replaced frequently, which can achieve higher utilization of equipment.
Tungsten Carbide Nozzle
When Inevitable to rough handling and media used for cutting abrasives (glass beads, steel shots, minerals, or cinder), tungsten carbide nozzle has the advantages of being more economical and longer service life. Traditionally, tungsten carbide is the best choice for the material of the nozzles.
They are widely used in surface treatment, sandblasting, painting, electronics, chemical processes and other industries with different applications such as wire straightening, wire guides, and other aspects.
Advantages
1.Sufficient strength and rigidity.
2. Good impact toughness.
3.Abrasion resistance.
4.Corrosion resistance.
5.Long service life.
6. Anti-compression.
7.Excellent thermal shock resistance.
8.Good sealing character.
Tungsten Carbide Valve Seat
As the main material of carbide seat, tungsten carbide has unique properties: long working time, corrosion resistance, and wear resistance. Also, the carbide valve seat can withstand high pressure. It can be widely used for most passenger vehicles, light and heavy-duty trucks, diesel engines and industrial engines. We provide carbide seat, superior quality with advanced equipment and perfect workmanship.
Outstanding Features Of Carbide Valve Seat
1.Corrosion resistance and wear resistance
2.Longer life-time
3.High pressure
4.High precision
5.Excellent endurance to high temperature
Tungsten Carbide Seal Ring
The mechanical seal ring is one of the most important tungsten carbide wear parts. Tungsten carbide seal ring is made with Cobalt (Co) as binder material. Nickel(Ni) Bonded Rings are also provided, widely used as seal faces in pump and seal, compressors, and agitators, suitable in high-speed wire rod finishing block, oil in refineries, fertilizer plants, petrochemical plants, pharmaceutical industries.
XYMJ has more than 20 years of experience in manufacturing mechanical seal rings and metal parts with tight tolerances, ISO certified, OEM available and the excellent wear resistance of TC roll rings bring high pass performance with superior surface finish.