The multi-piece saw machine has simple operation, high processing efficiency, and the discharge standard is more and more popular with wood processing plants. However, the multi-piece saw often has the phenomenon of burning deformation in daily use, especially in some new processing plants. Burning not only increases the use cost of the saw teeth, but also directly reduces the productivity by changing the saw teeth frequently, Now let's understand the five reasons and solutions for the burning of woodworking multi-piece saws!
Reasons for the burning of multiple saws in woodworking:
1. The cooling chip of the saw tooth itself is not discharged well:
The burn mark of the sawtooth will occur in a flash. When sawtooth is cut at high speed, the strength of saw plate will continue to decrease with the increase of temperature. At this time, if the chip discharge is poor or the heat dissipation is poor, it is easy to generate a large amount of friction heat. In the vicious cycle, when the temperature is higher than the heat-resistant temperature of the saw plate itself, the sawtooth will be sintered instantaneously.
A. Select the equipment with cooling device (water cooling or air cooling) to reduce the tooth temperature of the teeth, and ensure the smooth operation of the cooling device through regular inspection;
B. In order to discharge the heat dissipation chips of the blade itself well, reduce the friction between the saw plate and the cutting material, and reduce the friction heat, you can choose to purchase the saw blade with the heat dissipation hole or the blade;
2. Thin sawtooth or poor sawing treatment;
Because the wood is hard or thick, and the sawing is too thin, which exceeds the limit of the sawing board, the sawing resistance is too large during sawing, and it will be forced and deformed quickly; The saw plate is not strong enough due to insufficient treatment, and cannot bear the cutting resistance that should be suffered during sawing, and is deformed due to stress.
A. When purchasing saw blades, the supplier is required to meet its own processing conditions (cutting material, cutting thickness, plate thickness, equipment structure, saw blade speed and supply speed);
B. Understand the supplier's production and quality management system c. Purchase saw blades from professional manufacturers
3. The sawtooth installation is not standard or the equipment accuracy is poor;
Due to the incomplete installation of the sawtooth or the poor accuracy of the equipment, the sawtooth runout is too large or there is a non-vertical sawtooth angle between the sawtooth and the cutting material, the friction of the sawtooth increases rapidly, and the saw plate is thermally deformed;
A. Select a flat washer with appropriate size to make each saw tooth and washer perpendicular to the main shaft;
B. Ensure that the main shaft runs well without dislocation and wear;
C. Ensure that each feed axis is in the same horizontal plane;
D. Ensure the balance of conveyor chain and sawtooth;
4. Sawtooth grinding is not timely or the grinding method is not standard;
The sawtooth becomes blunt due to not grinding or not grinding in time, the cutting resistance increases, the friction between the sawtooth and the cutting material increases, and the saw plate is deformed due to heating, resulting in the deformation of the burning piece;
The saw blade shall be polished timely according to the wear of the blade head, and the blade grinding equipment with strong professionalism and high precision shall be used to polish the saw blade according to the original angle (it can be provided according to the original angle);
5. Improper operation of woodworking multi-piece saw or abnormality in production
If the feed speed is too fast, the friction heat will rise rapidly; Due to the improper placement of wood during supply, the saw board is impacted by the side and the friction becomes larger; When the following abnormalities are encountered in production, the sawtooth will encounter scars, and it is easy to produce bright materials and other solutions:
A. Adjust the feed speed according to the shape of the wood;
B. Train operators to standardize the operation level;
C. Remove the scars and large elbows immediately before cutting.
The above introduction is the analysis of five reasons and solutions for the burning of woodworking multi-piece saws. For more information, please feel free to contact us!