Why doesn't your stone shine?

In recent years, stone care choking hair is really fast, in the field of polishing is also constantly making progress, but sometimes whether feel in the polishing link "no matter what materials are not bright" when it?Be not the reason of material actually, however a few are easy to be ignored small detail, say the principle that judges stone material brightness below.

Principle of photometric measurement

What is luminosity?Luminosity is the rate at which a beam of light passes through, and that's how a photometer works;The light source is activated and a beam of light is emitted. The pass rate after the reflection of the finish is the reading of the light meter.

Does dust affect polishing?

As we all know, the renovation process is broken and repaired, such as shear grinding, coarse grinding, fine grinding, protection and crystallization. In many cases, the failure of polishing may be caused by the problems left by grinding.

What kind of dust will there be in grinding and polishing?

1, sand, dust: if it is dry grinding construction site dust is generally large, dust will fall on the ground, or from the outside brought in the sand and so on.

2, sole: the material brought into the sole is very destructive, such as sand, and many are small stone particles, but because the Mohs hardness is about 7.5, diamond Mohs hardness is only 10.If these substances into the room, after the foot will form scratches, some buildings, hotels will put some "sticky dust mat" at the door is to reduce the sole of the dust scratches the ground.

Abrasives that fall off during grinding

Peeling abrasives: If the ground is not cleaned by a high-power pumping machine during rough grinding, the ground is likely to leave a variety of easy-to-read abrasive particle residues, which are easy to cause scratches when polishing.

Influence of dust and abrasive on polishing:

Generally speaking, the particle diameter of smoke dust particles in the air is equivalent to the diameter of 300# grinding particles.A large amount of dust, coupled with loose grinding blocks, can cause the following problems during polishing:

For example, when some crystalline powder needs to be polished to 3000#, if the ground is not cleaned or abrasive particles left during grinding, the ground that has been ground to 1000# above will be destroyed by dust particles of 1000# in these regions.

Destroy the particle size: for example, our crystal machine is running at 175, or 200. When polishing, the grinding plate will rotate with the agent and these small particles.That means one small particle, 175 or 200 scratches a minute.Seemingly small, in fact, the ground can be scratched out of recognition.Carefully observe the ground after grinding, in fact, no matter what food materials will generally have more or less scratches.Only some stone can not be seen, such as light stone.But in some black, dark stone, any scratch is very obvious, we always feel that black stone white is the reason

Jump, grinding

There are two cases of jump here, one is not in order to increase the number of the grinding disc step by step.For example, if you directly grind 500# after 150#, the 300# in the middle is omitted, which will not only affect the later polishing effect, for example, if 300# is omitted for dark granite, it will also cause the problem that the color cannot be restored.In the second case, the jump film refers to the renovation film when cutting the mouth in the early stage, and the water grinding film is used for fine grinding, so that the scratches left by the cutting mouth can not be eliminated, which will cause the late polishing is not bright.

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