Colored Sapphire Crystal Watch Case For Large-Size Processing Work

The Kyropoulos method, referred to as KY, was first proposed by Kyropoulos in 1926 and used for crystal growth, and for a long time thereafter, the method was used for the preparation and research of large-size halogen crystals, hydroxides and carbonates. In the 1960s and 1970s, this method was improved by Musatov of the former Soviet Union and applied to the preparation of sapphire monocrystalline. The method grows a single crystal, the appearance is usually pear-shaped, the diameter of the crystal can grow to a size 10 to 30mm smaller than the inside diameter of the pot.

After the crystal has grown and completed the process of disengaging from the crucible, the crystal must be slowly cooled and cooled in the furnace, and the cooling process must be used to anneal the crystal to eliminate the internal stress accumulated by the crystal during the growth period, to avoid the residual internal stress, causing the crystal to crack when cooling due to the release stress. After annealing is complete, turn off the heating voltage and continue to cool, and then remove the sapphire crystals when the temperature in the furnace drops to room temperature to continue the subsequent analysis process.

Sapphire—a material that is almost as hard as diamond—has been used in watches for years as the crystals over the dials (in part due to being extremely scratch-resistant). It’s not the easiest material to work with, due to its extreme toughness. It can be difficult to cut and mold, but boundaries are pushing by cutting blocks of it into unique and fun shapes.Everything from traditional round cases to tonneau, square, and even wildly unexpected shapes that resemble car engines or jets.

The sapphire watch crystal is equipped with a glass made of sapphire, which effectively safeguards the dial and hands against potential shocks. The presence of sapphire crystal in your watch signifies its possession of the highest quality glass available today.

FATURES

1. High mechanical strength: the permeable infrared window material should have sufficient strength to withstand the high-speed movement of the speed pressure load;

2. Good thermal stability: the permeable infrared window material should be able to withstand the temperature shock caused by pneumatic heating and height changes, transmission ratio and refractive index should not change significantly with the change of temperature;

3. Good chemical stability: through infrared window material exposed to air, should be able to prevent the atmospheric salt solution or corrosion gas corrosion, and not easy to moisture;

4. High optical transmission rate, must be able to effectively transmit ultraviolet to medium infrared radiation;

5. Good optical characteristics, small optical scattering and good uniformity of refractive index;
Meets large window requirements.

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.

    ARH Sapphire Co., Ltd is a company engaged in optoelectronic materials, new crystal materials,especially all kinds of sapphrie products,which are widely used in consumer electronics, precision equipment, laser communications, medical, environmental protection, high-end instruments, instrumentation, aerospace, naval ships, weapons and equipment. The most advantage product is our sapphire watch cases, which need percisely processing work.

    The company has the raw material orientation, cutting, shaping,  grinding, chamfering, carved, fine grinding, polishing, cleaning, and a full set of  inspection equipment, as well as related testing equipment. With experienced engineering and technical team, With strong production capacity of non-calibration products, we can research, develop and design solutions according to customer needs.

    The company's products cover a wide range of types, products are sold all over the world. Adhering to the concept of "customer-centered, employee-based, R&D as the core", the company has a goal to become the best supplier of sapphire.