On-Line Annealing of Refrigerator ripe and Fuel Transport Tubes

摘要

The object of the heat treatment of welded tubes is the stress relief and recrystallization of steel. There are three processes which may be used to treat low carbon steel products: furnace annealing, continuous annealing (with resistance or gas heating) and induction annealing. Performances that can be obtained from the traditional furnaces are definitely correct; production costs, however, are high if compared with online processes. Continuous furnace annealing requires large and expensive installations! and it is not applicable to the tube manufacturing The induction annealing equipment allows the producers to increase the line speed of their current line while still producing acceptable quality tube.