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2022-08-21
A watch is composed of many parts, each of which plays an important role, including watch accessories and structure, case accessories and structure, and structure and materials of hands and straps. Today, let's talk about watch accessories so you can learn all the details when looking for a watch factory.
Watch glass: According to the material, it can be divided into plastic mirrors, white glass, blue glass, and sapphire glass. According to the structure, it is divided into flat glass, single bridge glass, and double bridge glass.
(1) Most factories usually use hard white glass, if there is no special request from customers.
(2) The glass beveled edge is divided into a smooth edge and a sand edge. Generally below 10ATM, glazing and sanding are used. The above ATM waterproofing requires the use of top and bottom double right edges. The size of the light edge follows the blueprint requirements.
(3) The glass assembly structure is the first order of viscose and beer.
(4) Viscose structure, generally waterproof up to 3-5ATM. Commonly used in horn shells and deformed shells. Certified watches must be airtight and can withstand 3 atmospheres of pressure. Waterproof watch letter mark: cover the back cover, WATERRESISTANT, usually waterproof rating, 10 ATM is calculated according to daily life waterproof. There are several ways to identify: a. water depth, such as 30M, b. pressure: write 3ATM or 3BAR. Deep sea diving pressure gauge visible from 600 meters. The case of the deep dive watch is very thick, mostly titanium, and the glass is also very thick.
(5) Glue structure, only the glass position will leave glue marks. To compensate for this deficiency, the bottom edge of the glass will be edged and printed. The unilateral width of the plated edge is generally 65-70C. In principle, the color of the plated edge should be the color of the plated back shell.
(6) The structural diameter of Type I glass is 50° larger than the housing opening (both sides).
(7) Viscose structure, the glass size is 100C larger than the shell mouth (both sides).
(8) Glass hardness: Normal glass hardness is 5 to 6 degrees on the Morse scale. Sapphire has a Mohs hardness of 9, second only to diamonds with a hardness of 10. Therefore, sapphire glass is not easy to wear and has a smooth surface. Of course, the cost will be higher.
(9) According to the material, is divided into PP, PE material, TEFLON material, HYTREL material, ZYTEL material, etc.
The function of the back cover of the case is to fix the movement, dustproof, waterproof, and so on. Generally made of stainless steel. The reverse side may corrode letters and patterns, which are divided into suction bottom, rice bottom, tooth bottom, screw bottom, etc. according to different assembly methods.
(1) The wave bottom is generally suitable for round shells with waterproof requirements up to 3-5ATM.
(2) Rice bottom is suitable for square rice husk and irregular rice husk. Waterproof requirement up to 3ATM.
(3) Tooth bottom: the difference between beer bottom and solid bottom. Waterproof requirements are above 10-20ATM.
(4) The threaded base is waterproof 10-20ATM.
The material of the inner cover of the watch is generally rubber. The outer diameter of the inner surface = the inner diameter of the wire hole. Note that the diagonal corner of the inner cover of the square case is 30-50°C smaller than the case hole. To design the tooth base structure, the box line hole needs a gong cover rice pit at the 9H position, and the inner cover also needs a corresponding convex rice position. Its function is to fix the inner cover and the hole when the bottom cover is assembled and rotated to keep the inner cover in place, and the general design of the inner cover compression: is 20-25C.
Blued steel hands are often used in luxury watches. Watch hands come in many shapes, but they all have a name and tradition known as the famous Breguet hands. Sports watch pointers are generally stick-shaped while flying or military pointers are mostly sword-shaped.
Strap materials are widely used and are basically divided into metal and leather. The precious metal is 18K gold and the best leather is the crocodile. Tungsten steel, rubber, ceramics, silk fabrics, etc. are also very common. The strap is an important part of the watch, and the value ratio is not low. The shape and color of the strap should match the watch.
2F, Building A, Shimei Industrial Park, Dalang Town, Longhua District, Shenzhen, China
Benefits and Considerations of Custom Mechanical Watches 
