People who have seen marble know that the surface of the stone is very bright, and even some marble can be used as a mirror. Of course, this is a bit exaggerated, but it is undeniable that the brightness of stone can bring the beauty of marble to the extreme. So let’s talk about marble polishing in this article.
The polishing of stone is called “physical polishing”, from low-grade grinding to high grinding, and continuously optimizing the depth of stone surface by grinding step by step, so as to make the marble minerals directly show high gloss, achieving a mirror-like effect.
In contrast, it is “chemical polishing”, and the “stone crystal technology” we usually refer to as a “chemical polishing” method“ The principle of “light out” of stone crystallization technology: the chemical reaction and waxy material filling is produced by the acidic crystallization material and calcium composition on the stone surface to form a bright surface.
● “ Why is the wear resistance of physical polishing better than chemical polishing?
Stone polishing, in fact, is a rough surface treatment smooth process. If we look at the aging and dimming stone surface under the high magnification glass, you will see countless potholes“ Physical polishing “is to grind off the loose, aged, and soft parts of the stone surface, shovel the potholes and hollows flat, and constantly optimize the stone surface, so that the stone surface is smooth and delicate to the high light of the mineral matter directly“ Chemical polishing “is to first react with this layer of pit and depression to form calcium salt, then the calcium salt and wax composition together fill, apply to the stone surface, forming a smooth and bright calcium layer.
The hardness of “physical polishing” is the hardness of stone itself“ Chemical polishing “hardness is a layer of calcium salt and wax composition hardness.
This is like two beautiful women: one is beautiful, the skin is smooth and delicate, the blow can be broken, the other has a big face, and it looks like a lot of powder. This is the same person, the natural beauty that, sweat wipe or beautiful moving. The one that is dusted, a paper towel will show its true appearance.
● “ Physical polishing and chemical polishing, the wear resistance of the two can be imagined!
In practice, the physical gloss of the “physical polishing” grinding plate is 5-10 times that of the crystallizing technology. The maintenance cycle has been greatly prolonged and has satisfactory gloss during the cycle.
At present, “physical polishing technology” has been very mature in China. VD easy grinding and VD surface dry grinding pieces are the best of them. In use, the high light that can not be achieved by crystallization can be obtained.
Key points of “physical polishing”:
Physical polishing is a process of making the surface of stone sufficiently delicate by grinding step by step, which means that to grind out the high gloss of stone physics, enough patience is needed. It is necessary to avoid the number of laps and reduce the number of grinding times. It takes time to achieve good quality. It is especially noted that we should be wary of a polishing method that is very easy to confuse with “physical polishing” — resin filling out the light.
Principle of “resin filling and light out”:
A kind of light resin with very light and soft hardness is mixed in the grinding plate. During the grinding process, the grinding plate and the stone surface have strong friction. The light resin will fall off layer by layer under the action of grinding force and fill the microporous gap on the stone surface with the polishing action of the machine and form a bright resin film on the surface of the stone.
This process of light-emitting, like “physical polishing”, is produced by grinding the light step by step, but in fact, it is similar to the principle of “stone crystal technology”.
● “ Resin fills the defects of “light out”
1. Dim, opaque, dazzling
The resin luster looks gray, faint, and impermeable. There is also a fatal flaw: dazzle. Dazzle is derived from a resin pattern formed by molding resin during the grinding process, which has a great influence on the perception.
2. Poor weather resistance
The luster formed by resin is easy to decay. Just like the water evaporates, it’s gone. Indoor, in the absence of people, trample in the case of two or three months of loss of light; In the outdoor environment, no one tramples on the ground and loses light completely for up to January.
3. Wear-resistant
The light resin itself is very soft (if hard, it will not be rubbed down by stone), and where can the film be hard?
The Mohr hardness of human nails is about 5, and the hardness of light resin is between 3 and 5, which is much softer than that of human nails. People’s sand and dust on the sole of shoes can easily wear this layer of film, and wear it. In summary: Although the brightness is still available, it will not last long.
Although there are many ways to polish stone, we should know the advantages and disadvantages of various ways. Only by knowing these methods can we use marble more reasonably and bring out all kinds of fine properties of marble. OK, this article is written here. Welcome to send me an email at sales@sntstone.com, share more stone stories.
