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Leizhan provides a versatile range of paper machine doctor blades designed to meet the diverse needs of different machine positions and process requirements in the paper manufacturing industry. Our commitment to continuous testing and development ensures that each blade delivers exceptional reliability and quality. The doctor blades are categorized into three ranges based on their functionality: the Economy range for high-quality performance at competitive prices, the Durability range for extended blade life, and the Performance range, which features advanced characteristics such as low friction, high heat resistance, and superior cleaning capabilities.
Optimized Wear Resistance: Our blades undergo a triple tempering process, enhancing wear resistance and ensuring a longer service life with consistently clean cuts for tissue paper and toilet rolls.
Precision Engineering: Each blade is crafted with precise heat treatment, providing excellent cutting longevity, high intensity, and minimal thermal deformation. Unwanted residual stress is carefully eliminated to maintain blade integrity.
Superior Cutting Performance: The blades feature a two-sided compound bevel with optimized geometry, polished for minimal friction, ensuring smooth and efficient operation across various applications.
Customizable Functionality: The doctor blades are available in ranges tailored to specific operational needs, offering everything from cost-effective solutions to blades with advanced performance features for demanding environments.
| Problem | Reason | Measure |
Uneven wear, frequent blade replacement | 1. The surface of the 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 the middle or edge of the 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 a gasket at the back of the blade if necessary 2. Replace the old and sunken blad |
Excessive wear at one end of the blade | The displacement of the blade is not parallel to the axia direction of the roller or dryer | Add gasket, if necessary, move bearing and bracket to adjust scraper parallel to the axial direction |
The blade is worn evenly but the end face is rough | 1. There is a deposit on the surface of the roller or dryer 2. The pressure of the blade is too high 3. The material of the blade is too hard | 1. Use an abrasive blade when necessary 2. Reduce the pressure 3. Use a slightly soft blade |
Excessive wear in the sheet area | The sheet leaves sediment on the roller or dryer | 1. Use an abrasive blade when necessany 2. Trim the edge of the blade freguently 3. Use a blade with a slotted end to prevent excessive pressure on both ends of the roller or dryer |
Excessive wear out of sheet area | The sheet lubricates the roller or dryer | Use a blade with a 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 a 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 |
Payment:
30% T/T in advance, 70% after inspection and before dispatch.
Shipping:
We offer various shipping options including SEA, AIR, RAILWAY, EXPRESS, and more. Rest assured, we will find the most suitable method to deliver your order.
MOQ:
You can order as little as one piece of our high-quality products.
Delivery Time:
Within 30 days after receive advance payment.
Packing:
Standard worth of sea shipping.
We guarantee that all our package are strong and resistant to make sure the safe transportation!