ಹೇಗೆ ಮಾಡುತ್ತದೆ ಪ್ರವೇಶ ಕರಗುವ ಕುಲುಮೆ make steel?

The first is the preparation for steelmaking in the induction melting furnace:

1. ಉಕ್ಕಿನ ತಯಾರಿಕೆಗಾಗಿ ತಯಾರಿ ಮಾಡುವಾಗ, ಪ್ರಾಥಮಿಕ ತಪಾಸಣೆ ಕೆಲಸವನ್ನು ನಿರ್ಲಕ್ಷಿಸಬಾರದು. ಫರ್ನೇಸ್ ಲೈನಿಂಗ್ನ ಸ್ಥಿತಿಯನ್ನು ನೀವು ಮೊದಲು ಅರ್ಥಮಾಡಿಕೊಳ್ಳಬೇಕು, ಉತ್ಪಾದನಾ ಉಪಕರಣಗಳು ಪೂರ್ಣಗೊಂಡಿವೆಯೇ ಮತ್ತು ಇಂಡಕ್ಷನ್ ಕರಗುವ ಕುಲುಮೆಯ ಫಲಕವು ಸಾಮಾನ್ಯವಾಗಿದೆಯೇ.

2. ಪ್ರತಿ ಎರಡು ಕುಲುಮೆಯ ನೆಲೆಗಳು ಒಂದು ಸೆಟ್ ಆಗಿದ್ದು, ಫೆರೋಸಿಲಿಕಾನ್, ಮಧ್ಯಮ ಮ್ಯಾಂಗನೀಸ್, ಸಿಂಥೆಟಿಕ್ ಸ್ಲ್ಯಾಗ್, ಶಾಖ ಸಂರಕ್ಷಣಾ ಏಜೆಂಟ್ ಮುಂತಾದ ಅಗತ್ಯ ಉತ್ಪನ್ನಗಳನ್ನು ಸ್ಥಳದಲ್ಲಿ ತಯಾರಿಸಬೇಕು ಮತ್ತು ಕುಲುಮೆಯ ಮಧ್ಯದಲ್ಲಿ ಇಡಬೇಕು.

3. ಉಕ್ಕಿನ ವಸ್ತುವು ಸ್ಥಳದಲ್ಲಿರಬೇಕು ಮತ್ತು ಉಕ್ಕಿನ ವಸ್ತುವನ್ನು ಸಂಪೂರ್ಣವಾಗಿ ತಯಾರಿಸದಿದ್ದರೆ ಕುಲುಮೆಯನ್ನು ಪ್ರಾರಂಭಿಸಲಾಗುವುದಿಲ್ಲ.

4. ಇಂಡಕ್ಷನ್ ಕರಗುವ ಕುಲುಮೆಯ ನಿರೋಧನ ರಬ್ಬರ್ ಹಾಸಿಗೆಗೆ ಗಮನ ಕೊಡಿ, ಮತ್ತು ಯಾವುದೇ ಅಂತರವನ್ನು ಬಿಡಲು ಕಟ್ಟುನಿಟ್ಟಾಗಿ ನಿಷೇಧಿಸಲಾಗಿದೆ.

The second is the attention when the induction melting furnace steelmaking enters the production stage:

1. ಹೊಸ ಫರ್ನೇಸ್ ಲೈನಿಂಗ್ ಅನ್ನು ಹೊಸ ಫರ್ನೇಸ್ ಬೇಕಿಂಗ್ ಪ್ರಕ್ರಿಯೆಯ ಅವಶ್ಯಕತೆಗಳಿಗೆ ಅನುಗುಣವಾಗಿ ಕಟ್ಟುನಿಟ್ಟಾಗಿ ಬೇಯಿಸಲಾಗುತ್ತದೆ, ಮತ್ತು ಬೇಕಿಂಗ್ ಸಮಯವು 2 ಗಂಟೆಗಳಿಗಿಂತ ಹೆಚ್ಚಿರಬೇಕು.

2. First add a small suction cup to the furnace to protect the furnace lining. It is not allowed to directly add large pieces of material into the empty furnace, and then turn on the electricity. At this time, the furnace front worker should add the small materials scattered around the furnace into the furnace in time, and it is strictly forbidden to drop it. The stove top and silicon steel sheet punch are only allowed to be used during the oven, and are not allowed to be used during the rest of the time.

3. The disk hoist lifts the material onto the stove from the stockyard, and the front workers sort the scrap steel. The sorted flammable and explosive materials are directly placed in the special collection box and registered and confirmed by the stove security.

4. The special collection box for flammable and explosive materials is placed between the two sets of furnace bases, and no one can move it at will.

5. The feeding in front of the furnace is mainly manual feeding. After the stove scrap is carefully sorted, the length of the material is less than 400mm, and the material that has been carefully selected by the furnace manager can be added by the suction cup. The driving commander is the small of each furnace seat. Furnace master, if other people command the driving suction cup to feed, the driving operator is not allowed to feed.

6. The feeding amount of the suction cup should be controlled. After adding, the scrap steel is not allowed to exceed the surface of the furnace mouth of the induction melting furnace. The scrap steel scattered around the furnace mouth should be cleaned up with suction cups. During the feeding process, the surrounding area of ​​the induction melting furnace must be kept clean to prevent the scrap steel from falling and causing ignition of the induction coil or cable joint.

7. It is strictly forbidden to pile a large amount of scrap steel on the platform, and the total amount is controlled within 3 suction cups to reduce the difficulty of scrap sorting.

8. In the event of an explosion, the operator should immediately turn his back to the furnace mouth, and quickly move away from the scene.

9. During the pre-feeding process, the long and large materials must be erected and added to the furnace to melt them into the molten pool as soon as possible. It is strictly forbidden to add them flatly to cause bridging. If the furnace material is found to be bridging, the bridge must be destroyed within 3 minutes. The charge is quickly melted into the molten pool. If the bridge cannot be destroyed within 3 minutes, the power must be cut off or the bridge must be destroyed in the heat preservation state before the power can be sent for normal smelting.

10. For some scrap steel that is overweight and needs more than 2 people to move into the furnace, it is strictly forbidden to throw it into the furnace. A transition should be made on the furnace edge, and then carefully pushed into the furnace.

11. The tubular scrap is added to the furnace, and the upper mouth of the pipe should be in the direction of tapping, and it is not allowed to be in the direction of manned operation.

For the cold steel and short-end continuous casting slabs in the slag ladle and tundish, the molten steel in the induction melting furnace should be added upright after the molten steel reaches more than 2/3, and it is not allowed to hit the furnace lining.

13. When the molten steel in the induction melting furnace reaches more than 70%, take samples for analysis. The samples shall not have defects such as shrinkage holes, and no steel bars shall be inserted into the sample cups. After the chemical composition results of the samples come out, the personnel who prepares the elements shall base on the comprehensive situation of the two furnaces. Determine the amount of alloy added.

14. If the result of chemical analysis in front of the furnace shows that the carbon is high, add some iron oxide nuggets for decarburization; if it shows that the carbon is low, add some pig iron nuggets for recarburization; if the average sulfur of the two furnaces is less than or equal to 0.055%, the rakes will be exhausted during tapping. Oxidized slag, increase the amount of synthetic slag added for desulfurization. At this time, the steel tapping temperature must be appropriately increased. If the average sulfur of the two furnaces is ≥0.055%, the molten steel should be treated in a separate furnace, that is, a part of the high-sulfur molten steel is poured into the ladle Put it into other furnaces, then add some silicon steel sheet punches into the two furnaces for smelting and then tapping. In case of high phosphorus, it can only be processed in a separate furnace.

15. After all the scrap steel in the furnace has been melted, the group in front of the furnace will shake the furnace to pour the slag. After pour the slag, it is strictly forbidden to put wet, oily, painted and tubular scrap into the furnace. Dry and clean materials are in the smelting process. It should be prepared. After the molten steel in the furnace is full, clean the slag again. After cleaning, quickly add the alloy to adjust the composition. The steel can be tapped more than 3 minutes after the alloy is added. The purpose is to make the alloy have a uniform composition in the furnace.

16. Tapping temperature: Upper continuous casting 1650—1690; molten iron about 1450.

17. Measure the temperature of the molten steel in front of the furnace, and control the power transmission curve according to the tapping temperature and tapping time required for continuous casting. It is strictly forbidden to keep the induction melting furnace in the high temperature stage (the holding temperature is controlled below 1600℃)

18. The temperature rises quickly after receiving the notification of continuous casting steel tapping. The heating rate of the induction melting furnace in the full liquid state: about 20℃/min before 20 furnaces; about 30℃/min for 20-40 furnaces; approximately 30℃/min for furnaces above 40 It is 40°C/min. At the same time, note that the higher the temperature in the furnace, the faster the heating rate.

19. ಮೊದಲ ಕುಲುಮೆಯನ್ನು ಟ್ಯಾಪ್ ಮಾಡಿದಾಗ, ಶಾಖ ಸಂರಕ್ಷಣೆಗಾಗಿ 100 ಕೆಜಿ ಸಿಂಥೆಟಿಕ್ ಸ್ಲ್ಯಾಗ್ ಅನ್ನು ಲಡಲ್‌ಗೆ ಸೇರಿಸಲಾಗುತ್ತದೆ, ಮತ್ತು ಎರಡನೇ ಕುಲುಮೆಯನ್ನು ಟ್ಯಾಪ್ ಮಾಡಿದ ನಂತರ, 50 ಕೆಜಿ ಹೊದಿಕೆ ಏಜೆಂಟ್ ಅನ್ನು ಶಾಖ ಸಂರಕ್ಷಣೆಗಾಗಿ ಲಡಲ್‌ಗೆ ಸೇರಿಸಲಾಗುತ್ತದೆ.

20. After the induction melting furnace is finished, check the lining condition carefully, and it is strictly forbidden to pour water into the furnace to cool down; if some parts of the furnace lining are severely corroded, the furnace should be repaired carefully before starting the furnace, and the furnace must be waited in the furnace after repairing. Feeding can only be done after all the water has evaporated. First, add a suction cup silicon steel punch in the furnace, and then add other scraps. The first furnace after repairing the furnace should control the power supply curve, so that the furnace lining has a sintering process to ensure repair For the effect of the furnace, it is strictly forbidden to add large pieces of waste to the furnace immediately after repairing the furnace.

21. During the whole production process, it is strictly prohibited to expose the furnace panel to the outside, and the insulating rubber should be replaced in time if it is damaged.