46mm Dia Double Domed Watch Crystal Sapphire Laser Cutting For Watch

Double Dome Sapphire Crystal Watch Lens Glass Laser Cutting Openings

In the watch, the table mirror is a very important part, mainly used to isolate water vapor and dust, in order to protect the hands, dial, movement. But did you know that when the watch was first invented, there was no crystal, it was covered with a cover. Later watchmakers slowly used silicate glass as the watch mirror, and there were also natural crystals used to polish the watch mirror during the same period.

After the 70s, sapphire crystals began to be used in watches. So far, the glass mirror materials used in timepieces are roughly divided into three types: acrylic, general mineral glass, and sapphire crystal glass, each with excellent characteristics. Acrylic mirror has a softer texture and higher plasticity, but it is easier to scratch, but it can also be easily restored by polishing; general mineral glass mirrors are more extensive and very convenient to obtain, and the hardness part is medium; sapphire crystal glass It belongs to the higher-level glass mirrors, which are mostly made of grind-fired crystal powder. Because of their high hardness, they are excellent in scratch resistance and wear resistance. Therefore, they are favored by many high-end watch brands. Many sapphire crystal mirrors are coated with anti-glare multilayer film on both sides to avoid refraction after receiving light. For example, Breitling's double-sided multilayer film sapphire crystal specially treated by Breitling can disperse the light source, especially in the high sky under direct sunlight. , To give full play to the function, so that the wearer can still read clearly under direct sunlight, without being disturbed. This kind of coated lens will cause anti-reflection effect. With less reflected light, natural light transmission is very good, and its light transmission rate can reach 99%.

Artificial sapphire is made of bauxite (alumina) and mixed with oxygen and hydrogen.

During manufacturing, alumina is first decomposed at a high temperature of 1200 degrees, and then the material reaches a melting point of 2050 degrees. After 15 hours, a rod will be formed. It is fired again at a high temperature of 1800 degrees to ensure the stability of the material.

Why US?

1. We’re the rare source manufacturer of color sapphire boule, and the most professional factory of sapphire processing, especially the special watch case.

2. We have our own sapphire grown equipent with CZ and KY method.

3. Professional customized production according to the drawing provided by clients.

4. Precision work of sapphire processing and polishing.

5. Experienced technicians and skilled workers.

FQA

1. Are you a trading company or factory?

We are a professional factory of sapphire products, also a trading company .

2.Can you do customized products?

Yes, we specialized in customized production or OEM work.

CAD,3D drawing are needed.

3.Could you provide samples?

Yes, we could provide samples with a charge, but if you place the order with a quality above 100pcs, the sample charge will be refunded.

4.What’s the delivery time?

It depends on the type of products and the quality.

For watch case, the regular time is around 5-8 weeks for 200pcs according to the difficulty of the processing.

5.How about the payment?

T/T payment is prefered.

6.How about the delivery?

Mostly by air, like DHL, Fedex.