E Flute Alloy Steel Corrugating Rolls 1800mm Width , Fuli SF12N Steam Heating Hard Chrome Rolls
| Product name | Corrugating rolls, corrugated roller |
| Material | 50CrMo |
| Application | Single facer, corrugator machine |
| Diameter | 200-600mm |
| Width | 1000-2800mm |
| Flute Profile | A, C, B, E, F, G, N, O |
| Heating Treatment | Intermediate frequency quenching treatment |
| Hardness | ≥HRC58 after heating treatment, harden layer 8-12mm |
| Coating | Tungsten carbide, hard chrome 0.06-0.08mm |
| Corrugator line | BHS, Fosber, BW Paper System, Hsieh Hsu, K&H, JS, Fuli, Wanlian, Taiwan Mingwei, Chinese Mingwei, Meiguang, Dongguang, Dpack, Xinguang, Xieyang, Shengli, Indian machine, etc. |
1. Strict Selection of Alloy Steel Corrugating Rolls Material
Good raw material is an important factor in high quality of corrugating roll. We select the best raw material manufacturer in China. With high strength and toughness, good hardenability, no obvious temper brittleness, 50CrMo alloy steel is specialized material for manufacturing corrugating rolls. Our raw material shell thickness is more than 70mm, the thicker shell can reduce deformation and keep stability during production.
2. High Hardness from Vertical Quenching Process
Intermediate frequency quenching can guarantee both the hardness and harden depth we need. Our harden layer depth can reach to 8-12mm. With harder base material as foundation, the lifetime of our corrugating rolls are greatly extended. After different heat treatment process, the corrugated roller surface becomes more wear-resistant and durable.
Intermediate frequency quenching machine.
3. Strict Test to Keep Improving
Before and after the surface treatment including tungsten carbide plating or hard chrome coating of corrugating rolls, it is needed to check the size, hardness, precision, flute profile, and simulation feeding paper. Special projector is used to check the flute profile and feeding different GSM paper to ensure the performance of corrugating rolls.
Test flute profile with computer and projector.
4. Comparison Between Tungsten Carbide Roller and the General Roller
| Compared Item | Chrome Plated Alloy Steel Corrugating Rolls | Tungsten Carbide Corrugated Roller |
| Flute profile and TUR | Due to the poor wear resistance of chrome-plated corrugated roller, in order to ensure the wear height is not lower than the standards,the tooth profile needs to be designed higher accordingly. | Tungsten carbide corrugated roller has high hardness, excellent wear resistance and low tooth height. Moreover, it will not reduce the compressive strength of the finished products due to the wear on the top of the tooth. A more optimized v-shape tooth can be designed to increase the strength of the cardboard, reduce the amount of the glue applied and save corrugated paper. |
| Thickness of finished board | Using chrome corrugated roller will lead to wear, and the height of the flute will be lower, so the thickness of corrugated board will be decreased. | Tungsten carbide corrugated roller will never wear in theory, and can ensure the finished corrugated board’s durability from high quality production. |
| Service life of corrugated roller | The service life of chrome-plate corrugated roller is generally between 8-10million meters. | The service life of tungsten carbide corrugated roller can reach at least 35 million meters, reducing the number of maintenance and replacement times, saving manpower, material and financial resources. |
| Usability of corrugated roller’s substrate | Because chrome corrugated roller wear resistance is poor, and repair at every time will reduce the corresponding diameter and hardness. Paper rate will be increased accordingly, and the number of repair will be less. | Tungsten carbide roller’s wear resistance is good, and it’s tungsten carbide coating adopts special removing process, so corrugated roller substrate can not be damaged, and corrugated roller can be used for many times with repairing. |
