Metal eyeglasses have a demerit that they are easy to get rusty, especially when they encounter with water in daily lives. Rusty eyeglasses are not only inaesthetic but also fragile. Therefore, one maybe has to get a change for another pair of glasses in a short time time and time again, which does not worth a continental. Then metal glasses leave a bad impression for people, however, it is stainless steel eyeglasses that subvert this bad impression. Stainless eyeglasses, by their excellent performance, tell people that there are metal glasses that are hardly get rusty. Then what is stainless steel eyeglasses? And how could they make such an achievement? To know stainless steel glasses better, it is necessary to get a general knowledge about stainless steel.
It is a common knowledge that all metals are inclined to have a chemical reaction with the oxygen in the air, as a result, an oxide film would be produced. Unluckily, the ferric oxide generated on ordinary iron or steel would continue to get chemical reactions with oxygen. Consequently, the etched surface expand, and at last numerous pinholes come into being, which result in the fragility of the metal. Therefore, to prevent relative oxidation reaction comes to the key point to keep metals from rust, and film coating should be a good idea. The researchers find that chrome would not have a chemical reaction with oxygen, so chrome becomes one of the basic elements to be coated on ordinary metals to make great progression to the achievement of keeping metals from rust. Besides, nickel, molybdenum, nitrogen and titanium, etc. bear similar function to chrome, so they are always applied in the production of stainless steels as well.
Therefore, when stainless steel meet with eyeglasses, stainless eyeglasses are able to eliminate the possibilities to get fragile, not to mention rusty. On the other hand, stainless eyeglasses could always keep brilliant, endowing the wearers, both men and women vigor and spiritedness. This is the reason why stainless eyeglasses would be so widely sought-after by eyeglass wearers from all walks of lives, ranging from students to celebrities.
In spit of the merits brought by stainless eyeglasses, they are usually highly cost, for the workpiece programme is rather complex. There are even so countries, which do not have a comprehensive and mature technology to produce stainless eyeglasses.
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