Is the 7 inch sanding disc torn or polished incorrectly? Your flaps may try to tell you something. Here are some tips to extend the life of the metal flaps for optimum performance.
Correct application – wrong angle
The flaps are designed to work tiltably. The angle depends on your manufacturing and the object being ground, but the general guiding principle is between 5-10 degrees from the plane/horizontal plane. If the angle is too flat, too many 7 sanding disc particles will immediately join the metal, causing the flip disk to wear much faster. If the angle is too large, you will not be able to use enough 7 inch sanding discs. This will result in excessive wear of only a portion of the 7 inch grinding wheel and insufficient sanding.
Adjust the angle. The way to determine if the angle is off is to look at how the 7 inch sanding disc wears. Generally, the surface of the 7 inch cutting disc should be worn in a manner approximately twice the thickness of the 7 inch sanding disc. Therefore, if your flap is 6 mm thick, you should see a 12 mm wide pattern on your face. If the wear pattern is wide, your method is too flat. If the wear pattern is thin, the method is too high.
Excessive force can cause the flaps to overwork and overheat. This will result in faster 7 inch sanding wheel wear and reduced abrasive effectiveness. At the same time, if the pressure used is insufficient, the 7 inch sanding disc will not be able to fully engage the metal, so that the surface cannot be effectively polished. This will result in longer sanding times and further wear.
Listen to your grinder – A consistent tone should be provided when the grinder is working properly. If you hear the grinder tipping and begin to make a low sound, the machine is overworked and too much pressure is applied. If the pitch is high, the 7 inch cutting off disc may bounce along the metal ridge and you will need to apply more pressure.
Consistency is key – try to apply the same pressure to forward and backward. You will naturally exert more pressure than forward. This can make things worse, because you’re overworked and overheated to move the 7 sanding disc forward (the edges turn orange as the particles are glazed), and the 7 inch sanding disc bounces off the metal on the way back. This will be a very inefficient process because no metal is removed every time.
Using the wrong speed (RPM) on the flaps can cause the disc to wear out prematurely, tear and eventually cause death. Choosing the right speed can extend the life of the flaps by 100%. In other words, using the wrong speed may halve the life of the flaps!
Select the appropriate size of the wheel for the tool you are using and follow the manufacturer’s recommendations. The maximum safety RPM marked on the flap should be greater than or equal to the maximum operating RPM of the grinder. You also need to pay attention to the tool speed. A lower power grinder will not be able to operate at the required speed and will not maximize the flaps.