Operating Regulations for Continuous Resistance Furnace

Operating Regulations for Continuous Resistance Furnace

1. The operator must understand the following points:

 

A. The structure and performance of the electric furnace and its auxiliary equipment.

 

B. The layout of power distribution system and control system and the location of safety devices.

 

C. Operating technology and safety operating procedures.

 

2. Preparatory work check before operation

 

A. Whether the power supply of the equipment is normal, whether there is a phase failure, short circuit or bare wire, etc.

 

B. Check whether the connection of the grounding device is in good condition.

 

C. Check whether the heating element is damaged, whether the contact of each connection is good, whether there is any contact with the furnace body and the cover.

 

D. Check whether the temperature control system is abnormal.

 

E. Check whether the furnace door rises and falls, and the trolley enters and exits normally.

 

3. Workpieces with corrosive, volatile and explosive gases are strictly prohibited from entering the furnace for processing, so as not to affect the service life of heating elements and refractory materials and cause explosions.

 

4. The electric furnace must not run over temperature, otherwise the service life of the equipment will be shortened.

 

5. The workpieces are evenly stacked, and the distance from the heating element should be about 100-150mm.

 

6. Workpieces with too much oxide need to be removed before entering the furnace, and they can be brushed off with a wire brush.

 

7. Brutal operation is strictly prohibited, and the workpiece should be handled with care to avoid impact.

 

8. When the electric furnace is in use, the operator shall not leave the post without authorization, and must pay attention to whether the working condition of the electric furnace is normal at any time.

 

9. When the electric furnace is loading and unloading workpieces, the heating element power supply must be cut off first to ensure the safety of the operators.

 

10. Oxide in the furnace (including under the electric furnace wire) should be cleaned frequently, at least once a week or once every five furnaces. Compressed air can be blown under the furnace floor.

 

11. After the resistance wire is used, it must not be bumped or bent to avoid breaking.

 

12. The electric furnace motor needs to be checked regularly, add lubricating oil, etc., pay attention to the safety of use.

 

13. Regularly check the use of heating elements. The heating element must not be bent or collided after short-term use. If it is not severely corroded and broken, the same material as the electric furnace wire (or the electric furnace wire itself) can be used as the welding rod, and acetylene gas is used for heating and welding. The welding rod is made of 50% white cloud powder. If the heating element is severely corroded and cannot be used, It should be replaced separately.

 

14. Regularly check the deviation of the instrument and thermocouple to prevent the incorrect temperature measurement caused by the error of the instrument and thermocouple and affect the product quality.

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