In industrial production, lâminas de corte play a vital role,especially in the cutting process of paper, plastic film, metal sheets and other materials. Due to high-load working environment and long-term use, blade wear is inevitable. However, understanding the root causes of wear and taking effective maintenance measures can significantly extend the life of your blades, thereby increasing productivity and reducing overall costs.
Reasons for wear of slitting blades
1.Improper match of material hardness to cutting material
Excessive differences in hardness between the blade and the material being cut can lead to increased wear. For example, when a carbide blade is cutting soft materials, the blade edge is prone to wear because the hardness difference is small; while when cutting harder materials, such as metal or thick cardboard, the blade is prone to greater impact, leading to accelerated wear.
2.excessive heat generation
During high-speed cutting, friction between the blade and the material causes heat to build up. Excessive cutting temperature will cause thermal stress on the blade surface, which will lead to thermal fatigue and rapid wear of the blade. Especially when cutting high-strength materials, temperature control is particularly important.
3.Cutting force is too large
During the cutting process, if the load on the blade is too high, especially at inappropriate speeds and feed pressures, the cutting edge of the blade will quickly dull and crack. Excessive cutting force not only increases the wear of the blade, but may also cause the blade to break.
4.Blade material quality issues
The material of the blade has a direct impact on its wear resistance and service life. If the hardness of the blade material is insufficient, or the heat treatment process is improper, the wear resistance and impact resistance of the blade will be greatly reduced, resulting in accelerated wear.
5.Intrusion of external pollutants
During the cutting process, the surface of the blade and the material to be cut may come into contact with some hard contaminants (such as sand, metal chips, etc.). These hard particles will adhere to the blade surface, increasing cutting resistance and accelerating the wear process.
6.The blade is not cleaned or lubricated in time
During the slitting process, if residual cutting material accumulates on the blade surface or is not lubricated on time, the friction coefficient will increase, causing the blade to wear more easily. Additionally, a lack of lubrication can lead to excessive wear of the blades at high temperatures.
How to effectively extend the service life of the slitting blade
1.Choose the right blade material
Choosing the right blade according to the characteristics of the cutting material is the first step to extend the life of the blade. For example, for cutting hard metals and thick plates, choose tungsten steel or carbide blades with high hardness and strong wear resistance, especially in the application of metal slitting blades, which can effectively cope with the impact of high-strength materials; for cutting soft materials or thin films, choose high-speed steel blades. Ensuring that the hardness of the blade matches that of the cutting material can effectively reduce unnecessary wear.
2.Optimize cutting process parameters
Cutting speed and feed rate are key factors affecting blade life. Excessive cutting speed or feed rate can easily increase the load on the blade, leading to increased wear. Therefore, the cutting parameters must be adjusted reasonably according to the characteristics of the material and production requirements to avoid the blade operating in an overloaded state.
3.Improve cutting temperature management
If the heat generated during the cutting process is not dissipated in a timely and effective manner, the blade will be annealed due to high temperature, resulting in a decrease in hardness. You can reduce the cutting temperature by reducing the time the blade is in contact with the material, using coolant, etc., thereby reducing the impact of heat on the blade.
4.Clean and maintain blades regularly
Accumulation of debris and cutting material on the blade surface increases wear, so regular blade cleaning is an essential step. At the same time, ensuring good lubrication of the blade and reducing the friction coefficient can effectively slow down wear. Using the right oil or lubricant during the cutting process is also an effective way to increase the service life of the blade.
5.Regularly check blade sharpness and geometry
The blade will become dull after working for a long time, affecting the cutting effect. Therefore, regularly checking the sharpness of the blade and sharpening or replacing the blade in time are the keys to maintaining cutting quality and extending the life of the blade.
6.Properly store and protect blades
During storage, the blade should avoid direct contact with hard objects to prevent damage to the blade. In addition, the blade should be protected from exposure to moisture to avoid corrosion. When storing, special blade protection boxes or packaging should be used to ensure the safety and sharpness of the blades.
7.Reasonably choose the cutting path of the blade
The design of the cutting path also affects the life of the blade. During the cutting process, avoid the blade entering overly complex or irregular cutting areas, as these areas require the blade to withstand greater uneven pressure, which can easily lead to accelerated wear.
Wear of slitting blades is inevitable, but through reasonable selection of blade materials, optimization of cutting processes, control of cutting temperature, regular blade cleaning and maintenance, and reasonable storage, the service life of the blades can be effectively extended. Not only does this increase productivity, it also significantly reduces the cost of replacing blades. In the fierce market competition, the performance and service life of blades directly affect the production efficiency of the enterprise, so sufficient attention should be paid to the maintenance and management of blades.