The service life of resin grinding wheel cutting disc depends not only on the production process and usage scenarios, but also on the temperature and humidity conditions and storage methods during storage. An unreasonable storage environment may lead to a decline in the performance of the cutting disc and even cause safety hazards, so it is necessary to understand the influence mechanism of these factors.
The effect of temperature on resin grinding wheel cutting disc is mainly reflected in the performance change of resin binder. Resin binder is an important component of cutting disc, which firmly binds the abrasive. When the storage environment temperature is too high, the resin binder will gradually soften and reduce its holding force on the abrasive. For example, if the cutting disc is stored in an environment above 50℃ for a long time, the activity of the resin molecular chain will increase and the intermolecular force will weaken, making it easier for the abrasive to fall off when the cutting disc is used, which not only affects the cutting efficiency, but also may cause the local wear of the cutting disc to increase and shorten the service life. On the contrary, when the temperature is too low, the resin will become brittle and the toughness will decrease. The cutting disc is prone to cracks or even collapse when impacted by external forces. Generally speaking, the ideal storage temperature of resin grinding wheel cutting disc is between 5℃ - 35℃. Within this range, the resin binder can maintain good physical properties and maintain the stability of the cutting disc.
Humidity is another key influencing factor. Excessive humidity can cause many damages to the cutting disc. When the ambient humidity is high, the cutting disc is easy to absorb moisture, especially the resin binder will undergo hydrolysis due to water absorption. The structure of the hydrolyzed resin binder is destroyed, and the bonding strength is greatly reduced, resulting in a weakened bonding force between the abrasive and the matrix. In addition, moisture will accelerate the oxidation of metal elements on the surface of the cutting disc. For example, abrasives with high iron content are prone to rust in a humid environment, affecting the sharpness and cutting quality of the cutting disc. In a high humidity environment for a long time, the cutting disc may even become moldy, further corroding the cutting disc material. To ensure the performance of the cutting disc, the relative humidity of the storage environment should be controlled between 40% - 65% to avoid the above problems caused by excessive humidity.
Improper storage methods will also have a negative impact on the service life of the resin grinding wheel cutting disc. Vertical storage is the ideal method, which can make the cutting blades evenly stressed and avoid deformation caused by excessive local pressure. The pressure on the edges and center of the cutting blades in a vertical state is relatively balanced, which can effectively prevent bending or warping caused by long-term uneven force. If the cutting blades are stacked horizontally, the weight of the upper cutting blade will be concentrated on the central area of the lower cutting blade. For a long time, it may cause the center of the cutting blade to sag and the edge to warp, which will not only affect the cutting accuracy, but also increase the risk of cracking due to uneven force during use. Moreover, horizontal stacking can easily cause the surfaces of the cutting blades to rub against each other, damaging the coating and abrasive on the surface of the cutting blades.
During storage, attention should also be paid to the contact method between the cutting blades and the ground and walls. The cutting blades should not be in direct contact with the ground, because the ground may be damp, sharp or uneven. Direct contact with the ground not only makes it easy for the cutting blades to get damp, but also may scratch the surface of the cutting blades due to foreign objects on the ground, destroying their structural integrity. Similarly, the cutting blades should not be stored close to the wall, because there may be condensation water or temperature changes on the wall, which can easily cause the cutting blades to get damp locally or have uneven temperatures. The correct way is to place the cutting disc on a dry and flat shelf, keep a certain distance from the ground, and 10-20 cm from the wall to ensure air circulation and reduce the impact of environmental factors on the cutting disc.
For long-term storage of resin grinding wheel cutting disc, regular inspection and maintenance are indispensable. Every once in a while, check whether the appearance of the cutting disc is deformed, cracked, damp, etc. If any problems are found, they should be dealt with in time. For example, a slightly damp cutting disc can be dried naturally in a dry and ventilated environment, but avoid exposure to the sun; for a deformed cutting disc, it should be carefully evaluated whether it can continue to be used and replaced if necessary. At the same time, record the storage time of the cutting disc, follow the "first in, first out" principle, and give priority to the cutting disc with a longer storage time to prevent performance degradation due to long storage.
In addition to temperature and humidity and conventional storage methods, attention should also be paid to the packaging integrity of the cutting disc. The packaging of the cutting disc when it leaves the factory has moisture-proof, dust-proof and protective functions. If the packaging is damaged, it should be replaced or sealed in time. For example, if the plastic packaging film is broken, you can use tape to seal it or replace it with a new packaging bag to prevent the external environmental factors from corroding the cutting disc. In addition, avoid storing the cutting disc in the same space with corrosive substances, such as acid, alkali and other chemical reagents. The volatile gases of these substances may corrode the cutting disc and affect its performance and service life.
Reasonable control of the temperature and humidity of the storage environment and the use of the correct storage method are the key to extending the service life of the resin grinding wheel cutting disc. Through scientific storage management, it can not only ensure that the cutting disc performs at its best when in use, but also reduce safety risks and improve safety and economy in use.
