What Are The Common Reasons For The "Strike" Of The Glasses Frame?
"I don't know why, my glasses have not been worn for long, the leg of the mirror suddenly broke off. How can the quality be so bad? How can I do this?"I believe that everyone who wears glasses will have such doubts: what are the common reasons for the "strike" of the glasses frame?
The following professional optician listed three common reasons, hoping to answer your doubts.
The first is the break.
Frame fracture is generally caused by external force, the hardness and toughness of different materials frame have essential differences, which have little relationship with its price.
If the external force exceeds the limit of the material fracture occurs, such as a horn frame material, this kind of material made of buffalo horn is very expensive, but this kind of material toughness is very poor, ten percent can be broken, slightly than ordinary plastic frame is solid, do you still think that "your frames easy broken?"
In fact, most metal frames are not broken, but produce "metal fatigue", that is, under the action of continuous and cyclic forces, materials or components gradually produce local permanent cumulative damage, and finally crack or suddenly complete fracture process.
Professor Remind everyone: when we pick and wear glasses, it is recommended that both hands hold the hinge position, to avoid a single hand caused by a certain part of the frame is unbalanced external force for a long time, so as to produce "metal fatigue" and fracture.
In addition, once the glasses are out of shape, do not start their own adjustment, so easy to cause metal fatigue and break. Correct APPROACH, it is to get professional hospital or glasses shop, by the master with special tools for targeted adjustment.
The second common cause of frame damage is dessoldering;
Welding, also known as burning welding in the eyeglass factory, is to weld the wound mirror ring, middle beam, mirror leg, pipe, clip, hinge, etc. according to the requirements of the drawing.
Dessoldering usually occurs for two reasons:
Backward welding process, and patients take improper wear. Once dewelding occurs, part of the material can be welded again, but after welding will destroy the electroplating, affecting the appearance.
Third: frame decolorization:
Decolorization is also a common reason that bothers people wearing glasses, which affects the appearance and may cause skin allergy. The reasons for decolorization vary with the material of the lens frame:
1. Plastic mirror frame
The decolorization problem has a direct relationship with the material itself of the frame. Injection frame, color mostly depends on surface printing or dyeing, so easy to decolorize. It usually occurs when the pigmented layer falls off due to uneven heat, or is scratched by sharp objects.
2. Metal frame
The decolorization problem is related to the electroplating process. The electroplating of the glasses frame is an electrochemical process as well as a REDOX process. The glasses frame with a good electroplating process will have a more stable coloring layer and better color persistence.
Finally, remind everyone: the price and material of each frame, the correct use method of the wearer and other factors will affect the wearing comfort and use time of the frame, only the correct wear and care of the glasses, can wear clear, comfortable and long-term.
