Why Are Titanium Frames More Expensive Than Other Frames?
People who have worn glasses have encountered a variety of troubles, such as: frame on the bridge of the nose often slide, movement is easy to fall off, and so on, how to choose glasses has become a knowledge, here to introduce to you.
1. Metal material
Its characteristics are: strong, light, beautiful, novel style, variety.
The material of the metal mirror frame is made of some kind of metal material or alloy, with copper alloy as the base material, and then the surface treatment is processed, often gilded, or plated with rhodium or palladium or titanium.Then there are the more recent pure titanium frames, as well as those made of memory alloys.
Metal frames are basically equipped with a nose rest, and the nose rest can be moved to accommodate a variety of nose shapes.The end of the mirror foot is often covered with plastic cover, which is not only beautiful, but also plays a role in protecting the mirror foot and skin.
2. Metal frames
Its advantage is fixed firmly to the lens, not easy to fall off.But the weight of the glasses is slightly increased compared to other frame types.Full frame glasses give people a sense of calm.The frame can keep out the thickness of the lens very well, suitable for people with medium and high degree
3. Half frame
A very fine nylon thread is used as part of the frame edge. The lens is ground flat by special grinding to the lower edge. There is a narrow groove in the lower edge, so that the nylon thread is embedded in the groove to form a bottomless frame.Half frame glasses have no frame on the lower part, so our vision becomes wider when looking down, unlike full-frame glasses, where the view is blocked by the lower half of the frame.The weight of the missing half frame will be lighter than that of the full frame frame, but the firmness will also be lower than that of the full frame.
As the name suggests, rimless glasses are lenses that are not fixed by the lens frame, but are fixed by the lens leg through screws, which greatly reduces the weight of the lens frame, and can greatly reduce the impact of the glasses on the appearance.Frameless glasses are lighter and more chic than ordinary frames, but the overall stability of frameless glasses is not good, and it is easy to deform. All the external forces on the glasses are concentrated on the fixing screws, and the lens is easy to be damaged.
However, compared with other metal, plate or plastic frames, titanium metal frames are more expensive.Titanium, which is not a rare metal, ranks fourth only to aluminum, iron and magnesium in reserves, and is 16 times the amount of copper, nickel, lead and zinc combined on earth.It is logical that a scarce resource should have a higher price. With such a large supply of titanium, why should titanium frames be more expensive than other frames?
So it's not hard to understand why titanium is used in glasses, and why it's so expensive
