Is the specific size of the bronze medal?

The size of the bronze medal design is about the following:
40cm ＊ 60cm, 20cm * 30cm, 35cm * 50cm.
The bronze medals are usually awarded to the third place (third place) winner of a competition (such as the Olympic Games such as the Olympic Games). The winners of the second (runner -up) and one (champion) of the competition generally win the silver and gold medals respectively. This approach is said to be created by a Jewish king.
This information:
The production process is roughly:
1. Determine the size
Cut into a square with a four -corner of 90 degrees. The side or welded edges, and the sides are folded and bronze into 90 degrees (the width of the edge is generally 2-3 cm).
2, cleaning surface
The wipe twice with a clean gauze dipped in two toluene or gasoline to remove the surface stains on the surface of the copper skin, it is best to use dyshane. Fan replaces.
Is when using dysfyrene or gasoline, it is strictly forbidden to smoke. After wiping with laundry powder, wipe the dry water with a dry gauze.
3, polishing
The washed copper skin on the sand wheel and polished, and then placed on the cloth wheel to polish until bright. If there is no sand wheel, you can use carbon color instead. The method is to take a straight ruler in the left hand and press it on the copper skin. Take the carbon color with your right hand and rub it back and forth until the surface of the copper skin is smooth and smooth, without a traffo.
4.
5, tape and lettering
This covering the entire bronze medal (including text) with a transparent polyester tape. Rape should be covered and sealed with fish scales. Paste the 2 layer, and then use a sharp knife to carve the text: there is no tape in the text. Care must be careful not to go away.
6, corrosion
The hollow text no longer seal with tape, at this time 30 % of nitric acid is poured on the text. Wear rubber gloves when operating to avoid burns. In practice, you can grasp the concentration of nitric acid. The low concentration time and the low concentration time. After pouring nitric acid, you should touch the text with your hands (wearing gloves) from time to time, feel a certain depth, and then quickly stop corroding nitric acid with water. Then remove the tape and dry the water.
7, polishing
It polish bronze with cloth wheels or carbon colors.
8, paint treatment
This spray transparent paint or paint on the copper skin. The spraying tool can be replaced by a manual sprayer if there is no air compressor. Before spraying, apply diluted diluted or banana oil until the paint fog dissipates. According to customer requirements, apply the text with red or black paint.
9. Drying treatment
Culed a simple drying room. It is best to set the iron skin at the bottom of the store. The iron sheet is about 1 square meter (according to the size of the general copper plate). 2 kilowatt electric stoves or electric heating wires (rooms) are installed with leakage protection devices. Put the bronze medal in the dryer, close the dryer door, and electricity. Bake at 120 ° C for 1 hour, and the paint is strong, and the copper flakes are shining.
Reference Source: Baidu Encyclopedia-Bronze Medal

See how fine your craftsmanship, it is usually 3-5 days.