What impact will excessively worn doctor blade have on paper machines? How can we effectively prevent it?
Doctor Blade is widely used in industry, especially in paper making, printing and coating industries. In the paper making industry, doctor blade is used as equipment for cleaning and adjusting the surface quality of paper in paper machine. Cleaning the Sundries on the roller is the primary function of the doctor blade. Depending on their materials and uses, doctor blade can be used to meet various needs in paper making production.
With long term use, the doctor blade attached to the roller surface will also affect production. As the doctor blade wears, the contact area between the tip of the blade and the roller surface increases. Even if the loading pressure is unchanged, the pressure area transmitted to the roller will decrease due to the increase in the contact area of the doctor blade, resulting in a decrease in the roller's dehydration capacity and surface cleanliness, and a tendency to break paper, which affects the operation of the paper machine.
If this worn doctor blade is continued to be used and the loading pressure is increased to improve the cleaning effect, the blade will be deformed under pressure, presenting a bird's beak shape, resulting in uneven cleaning of the roller surface and even damage to the roller surface. If the paper sheet is peeled off, the paper sheet passing under the knife may cause the roller to be entangled.
How to Effectively Prevent Excessive Wear of The Doctor Blade？
It is recommended to select appropriate doctor blade, loading angles and loading pressures for different roller surfaces. Different processes have different angles and pressures for doctor blade. The blades should be adjusted according to the production requirements of the paper machine to ensure that they are in the best operating state.
Regularly check the wear of the scraper system and doctor blade.
Do not continue to use excessively worn doctor blade by increasing the loading pressure. Once the doctor blade is overused and cracks appear, it needs to be replaced in time to avoid production equipment.
The wet doctor blade needs to pay attention to the spray lubrication in time.
As a professional doctor blade supplier, Sun Hong can customize and provide corresponding solutions according to the different needs of customers. Sun Hong's doctor blade series: Carbon Fiber, Glass Fiber, Phosphor Bronze, Stainless Steel, HDPE, Carbon Steel, Coating Doctor Blade, etc. Through innovation and professional technology, we help customers' production processes, improve production efficiency, reduce resource utilization, and assist customers in achieving production goals.
