Application and characteristics of water sandpaper

Water sandpaper is mainly used for grinding and polishing of automobiles, furniture, leather, home appliance shells, and mechanical parts. It has the characteristics of wet grinding, high surface finish of workpieces, and no dust pollution during operation. Sandpaper also plays a big role in model making, such as eliminating the water gate on the dart, polishing the notch of the parts cut on the runner, and sometimes fine sandpaper is used to remove the gloss of paint, remove the oxide layer of metal parts, and restore the original metallic luster of metal parts. Polishing with oily water sandpaper can make wooden models present a soft luster.
The unit of sandpaper is the number of particles per unit length of inch (Cw, usually called "grain size" or "grade"). Therefore, 500Cw and 800Cw refer to the number of particles arranged in one inch length. The larger the value, the finer the sandpaper. Gloves should be worn when operating coarse sandpaper to avoid leaving small cuts on fingers. 2000# water sandpaper is used to polish car paint scratches. The steps are as follows: Soak the sandpaper in water and gently polish the scratches. At this time, the scratches will lose their luster. Then use a polisher to restore them and finally wax them.
Water sandpaper principle
Generally, after grinding n grains of sand on the surface of an object, the possibility of each small piece being worn away is 2^n, and each possibility is the same. Because after the friction of one grain of sand, each small piece of the object is worn away by half on average, after the friction of one grain of sand, each small piece of the object is worn away by half on average, after the friction of one grain of sand, each small piece of the object is worn away by half on average. With the friction of n grains of sand, each small piece is worn away by n/2 parts on average. From the perspective of possibility, it can be calculated that each small piece is most likely to be worn away by about n/2 parts. For example, when n=10, the possibility of each small piece being worn away by 4 to 6 parts is 672/1024. When n=10000, the probability that each small block is worn 4900 to 5100 pieces is about 84%, and the probability that each small block is worn 4800 to 5200 pieces is about 99.54%.
Since there are many sand grains on a piece of sandpaper, every time a sand grain rubs the surface of an object, each small block of the object is rubbed by many sand grains. After many frictions, the value of n is large, and each small block is actually very small. The difference in friction force is a few grains of sand, which can be ignored. Therefore, coarse sandpaper can polish objects.
The role of water sandpaper
The magical use of water sandpaper in daily life-grinding comb teeth with 200, 400, and 600 mesh water sandpaper can make the comb teeth blunt; car beauty.
Advantages of water sandpaper
Grinding efficiency is increased by 30%-50%6
p Long life, low heat generation during grinding.
d High strength and tear resistance.
Good anti-clogging effect. After
Prevent sandpaper from fading and affecting the surface quality of the workpiece.