Tokyo Olympics medals peeling
It has been a month since the end of the Tokyo Olympics. Recently, an athlete shared that his gold medal was “skinned” on the Internet. The coating on the area next to the patterned wing had peeled off and the area was expanding. The athlete herself was very surprised by this phenomenon, so she shared it online and asked other people if they had the same experience. Netizens also expressed surprise at this. Some people commented that if you cut out a little bit, you might be able to pick out the chocolate.
Let's see if our medal will peeling?
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I quickly prepared some gold medals which we finished in past years and tested them by wiping down their surface harder; let me see if any peel off after being contacted so aggressively?
The Answer is No, after wiping, our gold medal looks more shiny and golden!
So why did the Tokyo Olympic medals peeling?
On the 25th, the Tokyo Olympic Organizing Committee stated that the peeling part was not gilded, but a coating to prevent small scratches, dents and stains from appearing on the medals, and “does not affect the quality of the medals themselves.”
Let us look at this spalling problem from a professional point of view, which is actually a defect in electroplating quality.
The Tokyo Olympics medals are known as the most environmentally friendly medals. The raw material is waste.
According to the Kyodo News Agency of Japan, the gold medal of the Olympic Games weighs about 556 grams and the silver medal weighs about 550 grams. Here I want to say that the gold medal is not pure gold, but more than 6 grams of gold is plated on top of pure silver. The silver medal is made of pure silver, and the bronze medal is made of 450 grams of brass with a small amount of zinc. The thickness of the gold plated layer is about 0.03 mm, which is very thin. Since the main body is recycled material, the purity is low. The adhesion of the electroplating layer is poor, and the surface of the medal is not cleaned before electroplating, and there may be oil stains or oxides on the surface.
And finally the adhesion of the coating is not firm. It is not surprising that there is peeling.
The Olympic champion was so frustrated when she found her gold medal had fallen off the skin.
As the organizer of the competition, we should make every participant feel happy rather than frustrated for getting a gold medal.
Choose us to make gold medal so that you will be not bothered by such matters.We are the ones who will make sure that your gold medal feels special. Contact Now: [email protected]