How to Identify Pure Titanium Spectacle Frames?
Titanium is widely used in the glasses industry because it is not easy to deform, fade and has strong stability. The spectacle frame made of titanium can highlight noble taste and elegant temperament. Spectacle frames made of titanium can be divided into pure titanium, titanium alloy and β There are three kinds of titanium glasses frames. Today, we mainly want to know about titanium alloy spectacle frames and how to identify pure titanium spectacle frames.
Characteristics of titanium alloy spectacle frame
Titanium alloy glasses frame has the advantages of low density, high strength, good mechanical properties and strong corrosion resistance. The spectacle frame made of is very light in texture and is not easy to be corroded by moisture.
However, due to the poor process performance of titanium alloy, cutting is very difficult, so the spectacle frame made of titanium alloy absorbs more chemical impurities such as hydrogen, oxygen, nitrogen and carbon.
The anti-wear performance of titanium alloy is poor and the production process is complex. Therefore, each time this material is used to make spectacle frames, the cost is relatively high and the workmanship is relatively complex. Therefore, the price is much more expensive than that of ordinary spectacle frames.
The glasses frame made of titanium alloy has very strong firmness and is not easy to fall off or damage the skin because its density is much lower than that of ordinary glasses frame.
Difference between pure titanium spectacle frame and titanium alloy spectacle frame
Titanium alloy glasses frame is slightly heavier than pure titanium glasses frame, but these two are high-quality materials, so it feels more comfortable from the appearance.
The glasses frame made of pure titanium will not contact with oxygen in vacuum during welding; The welding of titanium alloy spectacle frames (called spot welding) produces traces like "slope", which is one of the most effective methods to distinguish the two spectacle frames.
Pure titanium spectacle frame is at the hinge and will not be in direct contact with titanium; The titanium alloy spectacle frame will directly contact titanium, which is easy to cause wrinkling at the joint and poor opening and closing of the mirror legs.
The specific gravity of pure titanium is generally 4.5, while that of titanium alloy is 8.9, which is equivalent to half of that of titanium alloy. Therefore, the glasses frame made by hand is relatively light, which is the simplest way to distinguish the two kinds of glasses frames.
Pure titanium spectacle frames are mainly made of 99% high-purity titanium, without other materials; The mirror ring of titanium alloy glasses frame is mainly titanium alloy, which makes the firmness of glasses better.
How to identify pure titanium spectacle frame
The first method to identify pure titanium spectacle frames is the hand feeling measurement method
The second way to identify pure titanium spectacle frames is to observe whether there is a gasket at the hinge joint?
The third method to identify pure titanium spectacle frame is to observe the welding point of nasal bracket stem and nasal bracket box
The fourth way to identify pure titanium glasses frame is to use magnet for magnetic reaction.
Generally speaking, the pure titanium frame is marked on the mirror leg or lens with 100% titanium or puretitanium; Beta titanium or β Titanium logo is written slightly differently by different manufacturers.
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Mike Opticals
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