Apoyo
Transición de correas de tela a correas de acero
Los usuarios de cintas transportadoras se han sentido cómodos con las cintas transportadoras basadas en carcasas textiles durante muchos años, y a menudo las han preferido a las cintas basadas en cables de acero por diversas razones, entre ellas:
| 1 | Mature technology |
| 2 | A large supplier base of fabric belts kept prices down and deliveries quick |
| 3 | Comfort in splicing |
These reasons meant that users often chose fabric belts for high rated conveyor belts, though a steel cord belt would have done the job better.As steel cord belts have also matured as a technology, and with capacity addition, belt operators need not fear price or delivery reliability as a reason to stay with fabric belts. Forech can study your existing fabric belt, design a steel cord belt to replace it, and manufacture the replacement design.
Advantages of Steel Cord Belt over Textile
Longer Life, Simpler Maintenance.
- Life can be 40% or higher than for a textile belt
- Less installation downtime per operating hour
- Far fewer joint failures leads to less downtime for joint repair
- Eliminate the danger of fabric plies separating from textile
The Benefits of Lower Elongation.
- The elongation of steel cord belts is 0.3% compared to 4% in NN belts
- Design your conveyor with a smaller take-up length
- Reduce energy losses from slippage over the pulley
- Run your conveyor at a faster speed
The Benefits of Improved Troughing.
- A steel cord belt can trough more easily than a textile belt
- Increase your throughput with the same width, or reduce the belt width to keep throughput the same
| Troughing Angle (of side carrying rollers) | Minimum Troughablity (f/B) | Steel Cord improvement | ||
| Textile Belt | Steel Cord Belt | |||
| 20° | 0,05 | 0,08 | 60% | |
| 25° | 0,07 | 0,10 | 43% | |
| 30° | 0,09 | 0,12 | 33% | |
| 35° | 0,11 | 0,14 | 27% | |
| 40° | 0,14 | 0,16 | 14% | |
| 45° | 0,17 | 0,18 | 6% |
Los beneficios de una calificación más baja
- Las correas de cordón de acero requieren un factor de seguridad de 6,67, mientras que las correas textiles requieren un factor de seguridad de 10.
- Esto significa que puedes usar una correa de cordón de acero de menor capacidad para reemplazar una correa de tela.
- El diámetro mínimo necesario de la polea reduce
- El consumo de energía se reduce
- El peso del cinturón reduce
Otras ventajas técnicas
| Parameter | Steel Cord vs Textile Belt Ratio | Implication of Using a Steel Cord Alternative |
| Elongation | 01:16 | Lower take up length |
| Warp Flexibility | 1.6:1 | Smaller pulley diameter |
| Adhesion (of cover rubber to steel bonding layer vs cover rubber to fabric) | 2.7:1 | Longer life, lower failures and downtime |
| Troughability | 2.25:1 | Higher throughput |
| Joint Efficiency | 3.3:1 | Fewer breakdowns and unplanned downtime |
| Flexi Fatigue Resistance | 04:01 | Slower dynamic deterioration, longer life |
| Impact Energy Absorption | 03:01 | Better resistance to shock loads, fewer breakdowns, longer life |
Lower Thickness, Lower Weight
- The steel cord replacement for a fabric belt will weigh less and have a lower thickness
- This can be true even when the steel cord replacement needs slightly thicker cover rubber
- The lower thickness and weight in turn lead to lower power consumption
- Improved throughput with lower power consumption: the conversion helps you on both sides of the ratio
- The higher the rating, the better the steel cord advantage
| Fabric Belt | Thickness | Weight / sq mtr | Equivalent Steel cord belt | Thickness | Weight / sq mtr | Improvement in Thickness | Improvement in Weight |
| 1250/4 5+3 | 13,9 | 20,6 | ST800 6+4 | 13,6 | 20,7 | 2% | -1% |
| 1250/5 5+3 | 15,4 | 21 | ST800 6+4 | 13,6 | 20,7 | 12% | 2% |
| 1400/4 5+3 | 15,6 | 21,8 | ST1000 6+4 | 13,6 | 21,4 | 13% | 2% |
| 1600/4 5+3 | 16,4 | 23 | ST1250 6+4 | 13,6 | 22 | 17% | 4% |
| 1600/5 5+3 | 17,5 | 22,9 | ST1250 6+4 | 13,6 | 22 | 22% | 4% |
| 1800/4 5+3 | 18,2 | 23,9 | ST1250 6+4 | 13,6 | 22 | 25% | 8% |
| 2000/4 5+3 | 20,8 | 25,3 | ST1400 6+4 | 14,5 | 23,4 | 30% | 8% |
| 2000/5 5+3 | 19,5 | 25,9 | ST1400 6+4 | 14,5 | 23,4 | 26% | 10% |
| 2000/6 5+3 | 20,6 | 27 | ST1400 6+4 | 14,5 | 23,4 | 30% | 14% |
| 2500/5 5+3 | 24 | 28,7 | ST1600 7+5 | 17 | 24,8 | 29% | 14% |
| 2500/6 5+3 | 24,8 | 30,6 | ST1600 7+5 | 17 | 24,8 | 31% | 19% |
The Price Advantage
- The price advantage of steel cord belt over textile belt will vary depending on global raw material costs for textiles and steel
- In general, starting from ratings of 1400/4 and going higher, a steel cord belt will be cheaper
- In some market conditions, even 1250/4 belts can be replaced more cheaply with an alternative ST800 belt