What Causes Negative Pressure in Hot-Dip Galvanizing Annealing Furnaces?
Author: Robby
Hot-dip galvanizing annealing furnace negative pressure phenomenon is mainly due to the furnace pressure is lower than the outside atmospheric pressure, resulting in air flow from the outside of the furnace into the furnace, so that the furnace pressure becomes negative. This situation will affect the normal operation of the annealing furnace, and even damage the equipment and affect product quality.
Hot dip galvanizing annealing furnace negative pressure phenomenon is mainly caused by the following reasons:
Gas supply device problems: gas supply device such as mixing station, nitrogen dilution piping and other problems, resulting in insufficient gas supply, furnace pressure drop.
Exhaust device problems: exhaust devices such as the discharge valve in the low pressure is not closed in time, resulting in air constantly into the furnace, so that the furnace pressure becomes negative.
Fan problems: fan speed or control problems, resulting in the furnace pressure can not be effectively maintained.
In order to solve the problem of negative pressure in hot-dip galvanizing annealing furnaces, the following countermeasures can be taken:
Check the gas supply device: Ensure that the gas supply device is operating normally and supplying sufficient gas to avoid negative pressure problems caused by insufficient gas supply.
Adjust the exhaust device: Ensure that the pressure can be replenished in a timely manner when the pressure is low by increasing the automatic control of the fan speed to reduce the entry of air into the furnace.
Maintain the fan system: check and maintain the fan system regularly to ensure its normal operation and avoid negative pressure caused by fan problems.