Tungsten Carbide Corrugating Roll
Tungsten Carbide Corrugating Roll
1. The hardness and the anti-friction performance are only second to diamond.
- The lifetime is 3-5 times longer than that of chrome plated corrugating rolls.
- The change time and cost are decreased by 65-80% (including the stop and change expenses )
- More times of refurbishment can be done (instead of replacement)
- Reduce the expense of corrugating cardboard per square meters
- Avoid depreciation of related parts caused by concave abrasion of corrugating rolls (such as glue roll, doctor roll and pressure roll etc.)
2. Consistent quality of corrugating cardboard
With the excellent anti-friction, the flute height loss is between 0.06-0.08mm once a time in use. Meanwhile, the corrugation pattern won’t distort and the amount of glue won’t increase with the abrasion of corrugation top. Therefore, it minimizes the amount of waste during cardboard production and ensures uniform quality of corrugating cardboard.
3. Reduce the raw material cost of corrugating cardboard
- Due to its characteristic of super anti-friction, tungsten carbide corrugating rolls minimize the flute height loss, reducing more than 1% paper consumption than that of chrome corrugating rolls.
- The less abrasion of corrugation top can reduce the paste consumption cost by 20-50% and maintain the uniform thickness of paste layer.
- Avoid the quality limitation of common cardboard, and decrease the wastage loss by 30-50%.
The technical specifications of super anti-friction carbonized tungsten coating corrugating rolls
1. Special 48CrMo alloy steel fine forged pieces for corrugating roll
2. The hardness of base unit from medium-frequency quenching>HRC55
3. The thickness of anti-frictional carbonized tungsten coating is between 0.06mm and 0.08mm
4. The micro hardness of carbonized tungsten coating >HV1250-1400
5. Combined hardness >75MPa
6. Visible metallographic porosity<0.1
7. Optimized design for economical corrugation pattern
8. High-speed roller precision
- Gear teeth height limits of deviations≤0.025mm
- Addendum circle runout tolerance≤0.025
- Gear teeth width limits of deviations≤0.03mm
- Tooth profile limits of deviations±0.02mm
- Gear lateral face countershaft parallelism≤0.03mm
- Tip cylinder element linear≤0.02mm
- Gear teeth division limits of deviations±20″
- Concave roll height limits of deviations is ±5% of the height
9. Fine grinding and polishing gear surface, roughness Ra≤1.6um
The advanced technology of Super anti-friction carbonized tungsten coating corrugating roll
1. The most advanced equipment in the world
We introduce the most advanced thermal spray system JP8000 HP/HVOF, which is called the perfect “next generation” from American Praxair TAFA company, equipped with type 8100 CORONA air/fuel manage system which has closed-loop control by PC. It has high-precision control system to assure flame performance and coating repeatability, therefore unique coating quality is realized.
2. Apply the modern high-tech coating material
The cobalt-coated tungsten carbide (WC-Co) powder special for corrugating rolls, made by top suppliers in the world
3. The advanced professional thermal spray technology
We endeavour to achieve higher hardness, density and anti-friction properties for our cobalt-coated tungsten carbide coating.
4. The advanced polishing technology
The coating is polished by diamond, forming a smoother surface coating with a small frictional coefficient.
The combination of the latest high anti-friction cobalt-coated tungsten carbide coating technology and the most advanced corrugating roll technology gives corrugating rolls a better overall performance for high-speed operation. The super anti-friction carbonized tungsten coating corrugating roll will be applied more widely and make a great contribution to Chinese corrugating carton industry.