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Abnormal causes of reduction furnace mainly include the following points
Release time:
Sep 11,2024
Electrical faults: the electrical system may have short circuits, broken circuits, poor contact and other problems that prevent the reduction furnace from working properly. These problems require regular inspection of electrical connections to maintain good contact and avoid failures caused by dust and corrosion.
Inaccurate temperature control: Temperature is one of the most important parameters. If there is a problem of inaccurate temperature control, it may be due to damaged thermocouples, out-of-alignment temperature control meters, or malfunctioning heating elements. Need to check whether the thermocouple is intact, if necessary, replacement; calibration of temperature control instrument; check whether the heating element is damaged, there is a need to replace 1.
Furnace atmosphere is not stable: the gas composition of the furnace is critical to product quality. An unstable atmosphere may be due to problems with the gas supply system, such as a failed flow meter, pressure regulator, or an unstable gas supply. Regular inspection and maintenance of the gas supply system is required to ensure that all meters are working properly and to check the stability of the gas supply.
Poor sealing of the furnace body: Poor sealing will lead to leakage of atmosphere in the furnace, affecting product quality and energy consumption. The sealing of the furnace door and body should be checked regularly and worn seals should be replaced.
Material conveying problems: conveyor belts or rollers in the reduction furnace may have problems such as stagnation and runaway. Regular inspection of the drive system is required to lubricate the chain and gears, and to adjust the tension and alignment of the conveyor belt.
Heating element damage: Heating elements may deteriorate and fracture when working at high temperatures for long periods of time. You need to regularly check the integrity of the heating element, for the damaged part of the timely replacement.
Problems with the gas system: internal leakage due to poor opening and closing of gas valves, poor connection between instrumentation and piping, resulting in gas leakage and risk of gas explosion. Gas system operation over-temperature, over-pressure, equipment damage, safety valves, explosion-proof membrane and other safety accessories failure, damage to the leakage, fire, explosion when open flame risk of accidents. Oxygen content in the gas is not detected, or the detection is not timely and accurate, when the oxygen content in the gas exceeds the specified value, an explosive mixture is formed, which will trigger a chemical explosion when it meets an ignition source or a high temperature object. Fixed gas alarms should be set up in the gas area to detect gas leaks and deal with them in time. Otherwise, once the gas leakage occurs, it can not be detected in time, and the gas stagnates and gathers in the restricted space, and the gas explosion will occur at any time when it meets the ignition source.
Operational violations or errors: operators in the gas operation of operational violations or errors, such as pipeline purging is not complete, lead gas is not operated in accordance with the provisions of the replacement is not complete, open the valve in the wrong order, operational errors caused by the formation of compressed air pipeline negative pressure inhalation of gas, etc., the formation of explosive gas mixtures, there is a risk of gas explosion and gas poisoning 2. Gas explosion and gas poisoning.
In order to ensure the stable operation of the reduction furnace, it is recommended to make a detailed maintenance plan, including daily inspection, regular maintenance and preventive replacement of wearing parts.
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