In the production process of the spiral welded pipe in Ji'nan, the heating operation is a very important process for the quality of the resolution products, because the primary processing is carried out in the hot state.
The hot air stove used for heating in Ji'nan galvanized pipe is divided into two kinds, which are heating furnace and reheating furnace according to their effect. The former is used to heat the blank from normal temperature to processing temperature. The latter is used to reheat the blank to the necessary processing temperature in the process of processing.
The main purpose of Ji'nan galvanized pipe is circular heating furnace. The furnace has a circular furnace bottom, which can be changed slowly, and the billets are loaded in the direction of the bottom of the furnace from the entrance to a furnace that can be heated and heated to the regular temperature at the outlet of the furnace. The key to this heating operation is to uniformly heat the billet to the temperature suitable for processing.
Because the perforation has a great influence on the quality, that is to say, the temperature of the pipe bending is an important condition to influence the quality, so it is generally necessary to control the temperature of the blank during the perforation processing.
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