Clear Transparent Sapphire Single Crystal Materials For Watchcases
Back Glass Crown
Description:
Sapphire commonly known as corundum, the main component is Al2O3,
is a common simple coordination type oxide crystal. Sapphires in
nature show different colors due to the presence of some impurity
ions, such as sapphire containing titanium ions (Ti3+) and iron
ions (Fe3+) will show blue, containing chromium ions (Cr3+) will
show red, and when containing nickel ions (Ni3+), it will make the
crystal yellow. Pure alumina crystal is colorless and transparent,
because of its unique crystal structure, excellent mechanical
properties, optical properties and chemical stability, can be
applied to the high temperature environment of 2000 ° C, so it is
widely used in infrared military devices, satellite space
technology, high-intensity laser window materials and
semiconductor, large-scale integrated circuit substrate materials.
Processing:
Sapphire crystal hardness of up to 9, the world's only hardness of
10 diamonds more than it, so it is not afraid of scratching,
because of the high hardness so it is very brittle, easy to break
or fragmentation, so it can not use the traditional drilling or
stamping processing, can only rely on the five-axis CNC drilling
and fossilization of the round flat grinding head, according to the
design drawing slowly to grind out the line, shape. Drill tens of
thousands of speed per minute high-speed rotation, the shape,
lines, holes, etc., slowly grind out layer by layer. Even
screw holes , tiny eye all grinding by out ! Abrasive
wear rate is extremely high in the process of production, the
average abrasive after grinding out 20 to 30 holes, it must be
replaced, and whenever the diamond grinding head wear, the accuracy
rate will follow the deterioration, personnel must follow the
adjustment at any time during the production, so the yield of parts
production, the general sapphire mirror as high as 90%, As for
complex special-shaped cases such as MB&F, it is only 50%.The
last step is the grinding and polishing of the parts, this step is
also the most important, if you are not careful to wear the crack
on the failure, usually there will be manual monitoring the
processing process at any time to ensure that there will be no
accidents.
Parameters:
| Material | Sapphire Watchcases |
| Color | Red Blue Transparent |
| Size | Customized |
| Shape | Round Cube Irregular |
| Origin | China |
| Usage | Watch Glass |
| Hardness | 9.0 Mohs |
| Surface | Well Polished |
| Style | Luxury Watches |
| Classification | Accessories |
| Backglass | Custom |
| Case | Custom |
| Crown | Custom |
| Method | Mold |
| Market | Swiss Orient |
| Movements | ETA Orient |
| Synthetic | No natural |
| Waterproof | Yes |
| Wear-resisting | Yes |
| High temperature | Withstand |
Applications:
There are many methods for the growth of artificial sapphire
crystal, and the current mainstream methods mainly include bubble
growth method, heat exchange method, and lifting method. The
crystal grown by the heat exchange method can reach 430 mm in
diameter and weigh more than 150 kg, which is at the leading level
in all sapphire growth methods, and sapphire crystals with a
diameter of 500 mm are also being studied. In recent years, with
the national attention to the promotion and application of LED
lighting technology and the gradual deepening of people's awareness
of this advanced environmental protection material, the rapid
development of sapphire industry, large size, high-quality sapphire
crystal research and production has gradually become one of the
most dynamic new materials industry.
Related product:
FAQ:
Q: What is the Brand Name of the Sapphire Watchcases?
A: The Brand Name of the Sapphire Watchcases is ZMSH.
Q: What is the Certification of the Sapphire Watchcases?
A: The Certification of the Sapphire Watchcases is ROHS.
Q: Where is the Place of Origin of the Sapphire Watchcases?
A: The Place of Origin of the Sapphire Watchcases is CHINA.
Q: What is the MOQ of the Sapphire Watchcases at one time?
A: The MOQ of the Sapphire Watchcases is 1pc at one time.
