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Question:

why could aluminum pot be repaired by knocking the aluminum sheet into the pot but not being bonded by glue?

why could aluminum pot be repaired by knocking the aluminum sheet into the pot but not being bonded by glue?

Answer:

the oxidation rate of aluminum's surface is very quick, so we cann't use the method of tin welding, and the cost of argon arc welding is very high,so aluminum pot's repair usually uses riveting. aluminum has low hardness and good ductility, so it can be repaired by tightly knocking, without the bonding of glue. general glue will decomposed in open fire, if we bond pot by glue, the pot after repair won't be able to endure high temperature.

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