How to extend the service life of slitter blades?
How to extend the service life of slitting machine blades? In order to prolong the service life of slitting machine inserts, it is necessary to choose the right type of metalworking fluid and optimize the processing method, especially for difficult materials. High-quality cutting fluids are required to cut difficult materials and the cost of such cutting fluids is relatively expensive. However, difficult materials usually have a negative impact on the service life of alloy saw blades during cutting. Therefore, the right cutting fluid needs to be selected to extend the life of the tool and reduce machining costs. The direct causes of damage to tools are cutting forces and cutting heat. Therefore, no matter which machining method is used, the fundamental purpose is to reduce the cutting edge temperature of the cutting part and the machining area of the part, and to prevent surface hardening and cutting of the machined part. High temperatures increase the heat dissipation area and control the cutting forces.
1, choose a reasonable cutting method For difficult-to-machine materials, choosing a different cutting method may have a great impact on the damage of the cutting fluid. Regardless of which cutting method is chosen, the principle is the same, i.e. to minimize the cutting force and reduce the temperature of the cutting area. The cycloidal cutting method reduces the cutting area and allows the actual cutting angle of the cutting fluid to be smaller, thus extending the heat dissipation time of each tooth of the tool and reducing the cutting temperature. The helical interpolation method allows a relatively uniform cutting volume for each tooth. Avoid cutting force concentrated on several teeth and accelerate the wear, especially at four corners; Large feed cutting method reduces the depth of cut, reduces the amount of feed, and reduces the cutting force. Generate cutting heat during machining and low temperature in the machining area.
2, ensure timely chip break In metal processing, a large amount of cutting heat is usually generated on the cutting chips. If the chip length is controlled to ensure timely chip break, the chip can take away the cutting heat, so the chip is one of the methods to control the cutting temperature. In the machining of difficult-to-machine materials, especially in rough machining, the chips should be broken as much as possible throughout the process, provided that the machining system is rigid. At the same time, use cutting fluids with good sinking properties to sink chips and prevent them from rubbing against the workpiece surface. When mixed with water, it can form a stable and clarified solution. It has strong resistance to microbial decomposition and can maintain its stability under different water hardness conditions. The service life is more than 5 times that of ordinary emulsified oil.