Titanium metal has good corrosion resistance, similar to platinum (commonly known as platinum), its mechanical properties are excellent, its texture is light, and its unit weight is only 48% of general metal. Therefore, titanium is an ideal spectacle frame material because it has nothing to do with it. It is relatively light, flexible, and corrosion-resistant. However, the production cost of titanium and titanium alloy glasses is relatively high, and there are special high requirements on the process in cutting, stamping, welding and electroplating (for example welding must be done in a vacuum), so the price is relatively expensive.
With the increasing maturity of the research and development of titanium materials and the increasing maturity of processing technology, a variety of titanium-based frames such as pure titanium, B titanium, and memory titanium have appeared on the market. Among them, the purity of the pure titanium frame is required to reach 99.9% (excluding gaskets, screws, stipules and leg sleeves), and its logo is called PURE TITANIUM, or Ti-P for short. However, individual manufacturers have also carried out the above markings on some non-pure titanium or titanium alloy materials driven by their interests. In addition, the majority of consumers have insufficient ability to distinguish pure titanium frames, resulting in the appearance of frames after consumers wear titanium frames. Phenomena such as rust and skin allergies harm the interests of consumers. Here are a few simple methods to identify pure titanium spectacle frames.
1. Weight by hand, usually the specific gravity of the alloy frame is about 8.9g/cm3, and the specific gravity of the pure titanium frame is about 4.5g/cm3. Since the weight of the titanium material is equivalent to half of the alloy frame, it is lighter by hand. This is one of the easiest ways to distinguish between a titanium frame and a non-titanium frame.
2. Observe the welding points of the nose pad stem and the nose pad bucket. The welding of pure titanium material is a vacuum and oxygen-free butt welding. This is one of the effective ways to distinguish between the titanium frame and non-titanium frame.
3. Observe whether there is a gasket at the hinge joint. The pure titanium frame should not make direct contact between titanium and titanium at the hinge part, otherwise, the joints will be wrinkled and the temples will not open and close smoothly. Usually, two thin spacers are embedded in the hinge part of the pure titanium frame to separate the upper and lower hinges. Therefore, checking whether there is a gasket at the hinge is also a good way to identify whether a pure titanium frame.
4. Use a magnet as a magnetic response, loosen the hinge of the frame as much as possible, and use the magnet to attract it in a freely movable state. If the temple is swayed under the attraction of the magnet, it means that the frame is not pure titanium. The frame may be a pure titanium frame.
Grade 9 Titanium Plate titanium sheet Zirconium Sputtering Target Titanium Aluminum Sputtering Target
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