Introduction: In the early 1980s, titanium spectacle frames first appeared in the United States and Japan. It has been more than 40 years since then. Titanium spectacle frames appeared in China about 20 years later than Japan, but now they are 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 glasses. Therefore, China currently has more than 300 million pairs of glasses, and it is estimated that titanium glasses will reach 10 million billion pairs.
In the early 1980s, titanium spectacle frames first appeared in the United States and Japan. It has been more than 40 years since then. Titanium spectacle frames appeared in China about 20 years later than Japan, but now they are 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 glasses. Therefore, China currently has more than 300 million pairs of glasses, and it is estimated that titanium glasses will reach 10 million billion pairs.
Why are there so many titanium glasses? Mainly because titanium and titanium alloys have irreplaceable excellent properties. Its main advantages are: high specific strength, light weight and toughness. The density of titanium is 4.51g/cm3, 57% of that of steel, less than twice that of aluminum, but its tensile strength is three times that of aluminum. Among the metal materials, titanium alloy has the largest specific strength, which is 29MPa/cm3/g, which is 3.5 times that of stainless steel, 1.3 times that of aluminum alloy, and 1.7 times that of magnesium alloy; strong corrosion resistance, titanium and titanium alloy have a thin layer The solid oxide film has strong corrosion resistance, and has strong corrosion resistance to chemical substances and various domestic pollutants, as well as human sweat.
The structure of the spectacle frame is composed of 6 parts: spectacle frame, temple, pince-in frame, hinge, bending angle piece and pince-pin plate.
glasses frames
Titanium spectacle frames are prepared by cold-drawn or cold-rolled wire. The spectacle frame has a strong ornamental value. Therefore, there are various styles of spectacle frames, and its processing and manufacturing is a relatively fine technique.
The outline of the lens is a rectangular oval, ensuring its prototype is the primary task of the spectacle frame. The outline of each pair of spectacle frames should be highly consistent, and the error between each batch of products should be within the range specified by the standard. The bending performance of the spectacle frame material is especially homogeneous.Homogeneity has strict requirements. Generally, 3D CNC bending machine tools are used to automatically process mirror frames.
The bending angle piece of the lens is also a key part. When installing the lens, loosen the small screw slowly, and then tighten the small screw after fixing the lens. The spot welding machine is used for brazing, and the electrodes are located above and below the weldment, and are protected by argon arc to prevent oxidation.
glasses legs
The temples are parts that hang on the ears. They are elastic and should not be deformed when wearing them. They should fit the face very well, not loose or tight. They should be fine-tuned, and the surface is beautiful and elegant. The preparation process is die forging, stamping, polishing, bending, welding hinge (folding), and cutting.
Die forging is a process in which the cross section of the wire is changed in the length direction of the wire to make it conform to the designed section of the sample block. It uses a multi-head die forging machine or a computer numerical control (CNC) continuous die forging process; stamping is the use of upper and lower dies. The forged semi-finished products are punched with the designed pattern on the temples on the punching machine; polishing is to brighten the surface of the temples on the automatic polishing machine; the bending process is to braze the bending angle piece to the joint part of the mirror frame on the small punching machine , to connect the mirror frame and the temples; the cutting and separation process is to allow the temples and hinges (folding) to be folded freely, they must be separated first, and this separation work is carried out on a special milling machine.
The clip nose frame is a part that connects two frames. It is punched and machined by wire on the die. Both ends should match the curvature of the frame, and then spot welded. The material is required to have sufficient strength and not easily deformed when worn. ;Hinge (folding) is a key part to ensure the folding of the temple, spot welding on the temple or the frame, requiring high machinability and wear resistance of the material; Bending angle piece is a small part, precision cutting Machined, using the same material as the hinge; the nose plate is the part that supports the frame to be clamped on the nose, and can be made of titanium with good tensile processing performance and bending performance.
Titanium alloy is the best material for making frames. The titanium wires used in frames include pure titanium, titanium-nickel alloy and beta titanium alloy. Japan's Fukui Prefecture is one of Japan's titanium frames and one of the world's titanium frame manufacturing centers. 90% of the titanium frames made in Japan come from the county. Japan began to develop titanium-nickel alloy frames in 1981, and it was put on the market in 1986. The frame has an elegant softness and is very popular among users. Even if a lot of force is applied to deform it, it will return to its original state as long as the external force is removed. A comfortable and considerate feeling, it will not feel oppressive when worn, and it is loved by people (especially teenagers). Even if it is deformed by collision, it will not be damaged.
