In the early 1980s, titanium eyeglass frames first appeared in the United States and Japan, which is more than 40 years ago. Titanium eyeglass frames appeared in China about 20 years later than in Japan, but they are now quite popular.
In 2021, there will be about 250 million elderly people over the age of 60 who need to wear glasses, and about 50 million people in other age groups who need to wear glasses. Therefore, China currently has more than 300 million pairs of glasses, and it is estimated that there are 100 million pairs of titanium glasses.
Why are there so many titanium glasses? It's primarily because titanium and its alloys possess irreplaceable properties. Their key advantages include high specific strength, light weight, and toughness. Titanium has a density of 4.51 g/cm³, 57% that of steel and less than twice that of aluminum, while its tensile strength is three times that of aluminum. Among commonly used metals, titanium alloys possess the highest specific strength, at 29 MPa/cm³/g, which is 3.5 times that of stainless steel, 1.3 times that of aluminum alloys, and 1.7 times that of magnesium alloys. They also possess strong corrosion resistance. Titanium and its alloys possess a thin, solid oxide film that is highly resistant to chemicals, various household pollutants, and even human sweat.
The structure of an eyeglass frame consists of six components: the frame, temples, nosepiece, hinge, gusset, and nosepiece.
Eyeglass Frames
Titanium eyeglass frames are made from cold-drawn or cold-rolled wire. Their visual appeal is highly valued, resulting in a wide variety of styles. Their manufacturing requires a highly refined craft.
The lens profile is rectangular-oval, so ensuring the original shape is paramount. Each pair of frames must be highly consistent, and the tolerances between batches must be within the specified standard. Stringent requirements are placed on the bending properties of the frame material, particularly its homogeneity. Frames are typically automatically processed using 3D CNC bending machines.
The lens's corner bend is also a critical component. When inserting the lens, loosen the small screws gently. Once the lens is secure, tighten the screws again. Brazing is performed using a spot welder, with electrodes positioned above and below the weldment. Argon arc protection is used to prevent oxidation.
Eyeglass Temples
Eyeglass temples are flexible components that hang from the ear. They must not deform during wear and must fit snugly, neither too loose nor too tight. Fine adjustments are required, resulting in an aesthetically pleasing surface. The preparation process includes die forging, stamping, polishing, bending, welding hinges (folding), and cutting.
The nose clip, which connects the two frames, is made by stamping and cutting wire into a die. The ends are designed to match the curvature of the frame and then spot-welded. The material must be strong enough to resist deformation during wear. The hinge (hinge) is a key component that ensures the temples fold. Spot-welded to the temples or frames, it requires high machinability and wear resistance. The gusset is a small component, precision-machined from the same material as the hinge. The nose plate, which supports the frame against the nose, can be made of titanium, which has excellent tensile and bending properties.
Titanium alloy is the optimal material for eyeglass frames. Titanium wire used in frames comes from pure titanium, titanium-nickel alloy, and beta-titanium alloy. Fukui Prefecture, Japan, is one of the manufacturing centers for titanium frames in Japan and globally, producing 90% of all titanium frames manufactured in Japan. Japan began developing titanium-nickel alloy frames in 1981 and put them on the market in 1986. The frames have an elegant and soft feel and are deeply loved by users. Even if they are deformed by a great force, they will return to their original shape as soon as the external force is removed. They have a comfortable and considerate feel and will not make people feel depressed when wearing them. They are loved by people (especially teenagers). Even if they are deformed by collisions, they will not break.
If you are seeking for titanium materials such as titanium plates, bars, tubes, wires and titanium CNC machined parts, BAOJI RELIAB METAL is your one-stop supplier. We supplying the high quality titanium products with fast delivery, and 24-hours sales and after-sales services.
Contact us as below information:
Baoji Reliab Metal Materials Co.,Ltd
Tel: +86-917-8883215
Sales Department 1: +8613092900605 (Mr.Gary)
Sales Department 2: +8613092913521(Ms. Sophia)
Address: No.35 Baoti Rd, Weibin District, Baoji, China
