Operation points and safety precautions of pouring

2022-07-27
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Safety precautions for operation points of pouring process in steel plant

5 The ladle shall be hoisted, lifted and lowered according to the corresponding division regulations, and the subsequent command and operation can be carried out only after the gantry hook head is confirmed to be in or out of position safely

7. The special vehicle shall be driven by a specially assigned person; Follow the command; Properly hang and place the gantry; Correctly lift, transport and place the ladle

2. Correctly bake various ladle and materials; Reasonably arrange various ladle for production; It is forbidden to place continuous refining ladle under normal temperature for a long time

3. Carefully check, install, fasten and repair the ladle, carefully check each part, and immediately replace or stop the material if any hidden danger is found

2. After the molten steel is injected, the residual steel slag in the ladle shall be slowly poured into the dry waste ingot mold and slag tank. At this time, all personnel shall stay away from the slag tank

3. Do not overfill the molten steel during tapping. No one is allowed to stand near the ladle or on the opposite side of the tapping trough to avoid burns

4. When the ladle is baked and ignited, the sequence of gas ignition and air valve opening shall be followed; It is forbidden to open the compressed air first, or to open the gas valve for ignition

5. Inspect and maintain various mold lifting lugs regularly and at any time, and repair them in time if hidden dangers are found (the wearing depth of the trunnion shall not be greater than 5% of the original diameter)

8. During the hoisting of extra large objects, one person must be set at the front and back of the crane, and two people shall cooperate and command; No one is allowed to approach or stay or work under the lifted object

7. Frequently check that the edge of the ingot pit is kept in good condition. If the protective plate or wall on the edge of the pit is found to be inclined or damaged, it shall be repaired and replaced in time

1. Regularly and regularly inspect all kinds of cranes and riggings to ensure safety, flexibility and reliability; If any problem is found, it shall be replaced or repaired immediately. It is strictly prohibited to use damaged lifting appliances and riggings

2. When lifting steel ingots, ensure that the lifting slings are fully in place before lifting; When placing the ingot, confirm that the sling is completely separated from the ingot, and then open the crane

4. When placing steel ingots on the electric flat car or transport car, 3. The pre lifting angle of the pendulum: 150 °, it must be placed stably and reasonably. It is strictly prohibited to place two layers of steel ingots on it to avoid injury caused by falling

6. When stacking steel ingots, the two persons must keep the same pace, rise and fall at the same time. The stacking shall be neat and reliable. The height of stacking ingots shall not exceed two layers

7. When self knitting steel wire rope, it shall be spliced in strict accordance with relevant regulations; The spliced steel wire rope shall be placed in a fixed position, and it is strictly prohibited to keep it in a wet or high temperature state due to difficult operation

emergency measures:

1 In case of package leakage or the nozzle cannot be closed, the person in charge on duty shall quickly command the on-site staff to leave the accident site immediately, shift the focus to the setting, command the driving to operate smoothly, keep away from flammable and explosive areas, and properly handle the problem according to the data

2. In case of explosion or fire accident, the fire source and adjacent flammable and explosive sources (power supply, gas and oxygen) must be cut off, and then the fire shall be extinguished. The alarm 119 shall be called immediately and reported to the person in charge of the unit and the superior management department

3. In case of steel escaping from the chassis or intermediate injection pipe, iron foam shall be used for blocking, and thin mud shall not be used to avoid explosion

4. When pouring floating ingot mold, in case of steel running between riser and ingot mold, reduce the injection flow and fill the gap with dry river sand at the same time

5. When the chassis or ingot mold is cracked during pouring, the injected steel flow shall be reduced, and corresponding measures shall be taken according to the size of the crack gap

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