尽管几乎任何电线都可以用来加热，但大多数金属都能有效地导电。这就需要金

Although almost any heating wires can be used, but most of the conductive metal can be effective. This requires formation of a metal thin wire, it should have enough resistance to generate heat. When most metals are heated, they are oxidized rapidly, become brittle when heated in air. However, nichrome wire chromium oxide layer will form a layer, the welding wire is thermally stable in air (typically oxygen barrier) and protect the heating element from further oxidation.

Although almost any wire can be heated, most metals conduct electricity efficiently. This requires the metal to form a thin wire, so there should be enough resistance to generate heat. When most metals are heated, they oxidize quickly and become brittle when heated in the air. However, nickel-chromium alloy wire forms an outer layer of chromium oxide, which heats the wire in the air (usually oxygen-resistant) and protects the heating element from further oxidation.

Although almost any wire can be used for heating, most metals conduct electricity effectively. This requires the metal to form a thin wire, so there should be enough resistance to generate heat. When most metals are heated, they oxidize rapidly and become brittle when heated in air. However, nickel chromium alloy welding wire can form a layer of chromium oxide outer layer, which makes the wire thermally stable (usually oxygen resistant) in the air and protects the heating element from further oxidation.