Why do top watch brands love sapphire watch?
How to determine whether a wrist watch are classified as top brands, you can see if it adopts sapphire mirror and conclusions, sapphire, high hardness, made of the watch and its shock resistance, impermeability and strength is higher than other materials, and it is also the top watches an important factor for the quality of the.
1.What is the sapphire mirror?
Before you answer this question, you should be clear about what sapphire is. The main chemical composition of sapphire is trioxide, which is originally colorless and transparent, but is blue because it contains iron oxide and titanium oxide. If it contains chromium oxide, it is called a ruby because it is red. Now watch sapphire mirror, the installed above are in addition to the 3 oxidation 2 aluminium ferric oxide and titanium oxide impurities, say from chemical, there is no difference between synthetic sapphires and natural crystal, for not to add other elements, so it is colorless transparent without "blue" color. The aluminium oxide is made from pure alumina at high temperature to make the original synthetic sapphire, which is then cut into round pieces by the diamond tool and then polished into a table mirror. Because of the high cost of processing tools, this is one of the reasons for the high cost of sapphire. The technique of synthetic sapphire was invented in the 19th century and has been used on watches since the 1960s, and now the top watch brands are usually made of sapphire.
Both natural sapphire and synthetic sapphire, is one of the hardest material on earth, hardness of Morse magnitude 9, in nature, in diamond, no more hard than it. Notice that what is said here is not in nature, not on earth. Some synthetic silicon-carbon compounds can also be as hard as nine and scratch sapphires. Many buildings and decoration materials also use silicon-carbon compounds, such as artificial stone, etc., so if there is friction in these places, it is possible to leave scratches on the sapphire surface.
2. Some "do not know" about the mirror of the watch:
Does the watch with the organic glass mirror have collection value?
If you want to collect an antique watch, it is likely to be a mirror of plexiglass. But if you want to collect a new watch, choose a sapphire watch. Many collectors prefer the warm surface of the arc mirror. This is because the acrylic sheet is curved, so the case can be made thinner without affecting the movement of the needle. However, organic glass is easy to be scratched, only one year, and there are a lot of tiny scratches on the glass surface.
Is sapphire glass better?
B: yes. It won't be scratched. Sapphire is very hard and is an inevitable choice for top watches, for example, all new Rolex is made of sapphire glass. But, like glass, it is brittle and easy to break. Therefore, the sapphire mirror, once broken, then the resulting maintenance cost will be very expensive, because the clock before replacing the lenses, to ensure that the machine must be carefully checked in left sapphire. In addition, it is a powerful fingerprint collector, the FBI's favorite.
Can I replace the plexiglass with a sapphire watch?
Can't. Because the thickness of the case is different. Normally, the sapphire's mirror is thicker than the glass mirror. Maybe you can find the right size of a sapphire watch, but it will also damage the watch's waterproof properties. In addition, the result is that many vendors will refuse to provide maintenance for your watch.
3. How to identify three types of table glasses?
First, you can tap the mirror and listen carefully. The acrylic mirrors make a plastic sound, while the sound of glass is thicker. Second, it can be judged from the weight Angle, the acrylic mirror is the lightest, the sapphire mirror is the heaviest. The sapphire's thermal conductivity is good, so when you touch it with your hands, there's a cool feeling. As a result of the sapphire mirror is far better than the other two kinds of material of mirror surface is smooth, therefore, if you drop a drop of water on the sapphire mirror, water droplets in the above is not easy to spread, and the other material will be scattered. "The surest way to do this is to do a scratch test," says JohannJorgo, New York technology director at Baume&Mercier. "it's not very practical." If the host allows, you can take a stainless steel knife or a screwdriver to draw on it to see if there is a scratch.