What is the difference between heating wire and resistance?
The heating wire is a resistance wire, but it has a high melting point, good heat resistance, fast heating, and is used as a heating wire. But not all resistors can make heating wires. Nichrome resistance wire can.
Iron-chromium aluminum, nickel-chromium electric heating alloy its oxidation resistance is generally strong, but because the furnace contains a variety of gases, such as air, carbon atmosphere, sulfur atmosphere and hydrogen, nitrogen atmosphere, etc., these gases have a certain impact on the components in high temperature use, although a variety of electric alloys are oxidation treatment before leaving the factory, but in transportation, winding, installation and other links will cause component damage to a certain extent, and reduce the service life.
In order to prolong the service life, customers are required to carry out pre-oxidation treatment before use, the method is to heat the installed electric alloy element in dry air to 100-200 degrees lower than the maximum allowable use temperature of the alloy, keep warm for 5-10 hours, and then cool it slowly with the furnace.
