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SUN HONG
Product Description
The doctor blade may seem like a basic piece of paper machinery and doesn't require a large investment, but it plays a crucial role. It helps to maintain the cleanliness of the paper machine rollers and fabrics, prolongs their lifespan, and ensures the paper machine operates normally and produces consistent high-quality paper. In short, it brings about significant benefits.
Production process
Material
If you want to know more please contact us.
Principle
How to Protect Doctor Blade
| Problem | Reason | Measure |
| Uneven wear, frequent blade replacement | 1. The surface of roller or dryer is uneven 2. The doctor holder is damaged or dirty 3. Sediment | 1. Use a softer blade 2. Clean, repair or replace the doctor holder 3. Use abrasive blade |
| Excessive wear on middle or edge of blade | 1. The blade is not installed on the top of the roller 2. The old blade sinks (or leaves) the roller or dryer | 1. Refit or add gasket at the back of blade if necessary 2. Replace the old and sunken blade |
| Excessive wear at one end of blade | The displacement of blade is not parallel to the axial direction of roller or dryer | Add gasket, if necessary, move bearing and bracket to adjust scraper parallel to axial direction |
| The blade is worn evenly, but the end face is rough | 1. There is deposit on the surface of roller or dryer 2. The pressure of blade is too high 3. The material of blade is too hard | 1. Use abrasive blade when necessary 2. Reduce the pressure 3. Use a slightly soft blade |
| Excessive wear in sheet area | The sheet leaves sediment on the roller or dryer | 1. Use abrasive blade when necessary 2. Trim the edge of blade frequently 3. Use blade with slotted end to prevent excessive pressure on both ends of roller or dryer |
| Excessive wear out of sheet area | The sheet lubricates the roller or dryer | Use blade with slotted end |
| Local depression | The blade is damaged, electrostatic (discharge/ electrolysis /heating) | Insulate the blade from the holder or use a non-metallic blade |
| The blade produces burr | 1.The material of the blade is too soft 2. The pressure is too high 3. The angle of the blade is too small | 1. Use a slightly hard scraper 2. Reduce the pressure 3. Adjust the bearing or bracket to increase the angle, and use the instrument to check and correct the angle |
Application
Although the doctor blade seems to be a set of simple paper machine equipment, and the investment is not large, its role is not small at all. It can keep the paper machine rollers and fabrics (forming fabric, press felt, dry fabric, etc.) clean, extend the cleaning cycle and fabric service life of the paper machine, maintain the normal operation of the paper machine and the stability of paper quality, so as to produce huge benefits.
Features
Quality Inspection
Packing & Delivery
With carton box & wooden case by sea or air
Related Products
Circular Knife:Widely used in domestic and foreign single facer or corrugated production line slitting corrugated paper board,and all kinds of slitting machine.
Long Cutting Knife:The paper cutter blade is one of the important parts of the paper cutter, which is widely used in the paper and printing industry. The paper cutter blade is used in papermaking, printing and other industries.
Product Description
The doctor blade may seem like a basic piece of paper machinery and doesn't require a large investment, but it plays a crucial role. It helps to maintain the cleanliness of the paper machine rollers and fabrics, prolongs their lifespan, and ensures the paper machine operates normally and produces consistent high-quality paper. In short, it brings about significant benefits.
Production process
Material
If you want to know more please contact us.
Principle
How to Protect Doctor Blade
| Problem | Reason | Measure |
| Uneven wear, frequent blade replacement | 1. The surface of roller or dryer is uneven 2. The doctor holder is damaged or dirty 3. Sediment | 1. Use a softer blade 2. Clean, repair or replace the doctor holder 3. Use abrasive blade |
| Excessive wear on middle or edge of blade | 1. The blade is not installed on the top of the roller 2. The old blade sinks (or leaves) the roller or dryer | 1. Refit or add gasket at the back of blade if necessary 2. Replace the old and sunken blade |
| Excessive wear at one end of blade | The displacement of blade is not parallel to the axial direction of roller or dryer | Add gasket, if necessary, move bearing and bracket to adjust scraper parallel to axial direction |
| The blade is worn evenly, but the end face is rough | 1. There is deposit on the surface of roller or dryer 2. The pressure of blade is too high 3. The material of blade is too hard | 1. Use abrasive blade when necessary 2. Reduce the pressure 3. Use a slightly soft blade |
| Excessive wear in sheet area | The sheet leaves sediment on the roller or dryer | 1. Use abrasive blade when necessary 2. Trim the edge of blade frequently 3. Use blade with slotted end to prevent excessive pressure on both ends of roller or dryer |
| Excessive wear out of sheet area | The sheet lubricates the roller or dryer | Use blade with slotted end |
| Local depression | The blade is damaged, electrostatic (discharge/ electrolysis /heating) | Insulate the blade from the holder or use a non-metallic blade |
| The blade produces burr | 1.The material of the blade is too soft 2. The pressure is too high 3. The angle of the blade is too small | 1. Use a slightly hard scraper 2. Reduce the pressure 3. Adjust the bearing or bracket to increase the angle, and use the instrument to check and correct the angle |
Application
Although the doctor blade seems to be a set of simple paper machine equipment, and the investment is not large, its role is not small at all. It can keep the paper machine rollers and fabrics (forming fabric, press felt, dry fabric, etc.) clean, extend the cleaning cycle and fabric service life of the paper machine, maintain the normal operation of the paper machine and the stability of paper quality, so as to produce huge benefits.
Features
Quality Inspection
Packing & Delivery
With carton box & wooden case by sea or air
Related Products
Circular Knife:Widely used in domestic and foreign single facer or corrugated production line slitting corrugated paper board,and all kinds of slitting machine.
Long Cutting Knife:The paper cutter blade is one of the important parts of the paper cutter, which is widely used in the paper and printing industry. The paper cutter blade is used in papermaking, printing and other industries.
