The hot tinning
The hot tinning is a method of steel's coating by immersion in a bath of molten tin (250 ° C) after degreasing, acid pickling and fluxing
A spin cycle of tined parts is practiced just after bath in order not to "trap" the tin in the hollow parts and ensure uniform thickness. The parts are cooled in several successive tanks and then dried by passing through a heat tunnel or vibrators full of corn cobs.
This method "old" deposits a coating less regular than the process of electroplating but has many advantages.
The tin coating on the finished product is thicker and it helps protect the edges and any welds. He brazes the various assemblies which strengthens, ensures sealing, and gives a beautiful glossy
The tin was known in ancient times around the world. Objects in bronze (an alloy of copper and tin) have been dated to 5000 BC.
Tin is a silver gray metal, malleable, density of about 7.3. The major world reserves are in Malaysia.
The tin resists corrosion by sea water and fresh water, but can be attacked by strong acids. It is popular because it is a good electrical conductor and an excellent filler metal for brazing but also for its brilliance and qualities of food compatibility. Tins are in "white iron" that is to say steel with very low carbon content then coated with tin.