Safe operating rules for casting aluminium rods

1. Preparation before casting

1, before work to wear work clothes, wear a protective mask, so as to avoid high temperature burns.

2. Check the dryness of the flow trough and the integrity of the casting plate.

3. Clean the crystallizer, dry the water of the ingot head, heat the flow trough and diverter to 300°C to 400°C, so as to avoid the explosion of aluminum liquid when it encounters water or low temperature, and ensure that the water eye is smooth.

4, before casting, first supply cooling water, check whether the crystallizer dripping water and water plug water, if there is water, prove that the crystallizer is not installed, to reinstall. If there is water plug water, to clean up before casting.

5. Check the graphite ring and apply lubricating oil.

6, check the normal position of the ingot head, and use compressed air to blow the water in the ingot head, and introduce the ingot head into the mold.

7, before casting, the aluminum rod tilt frame should be raised to the mold position to prevent aluminum leakage during casting to hang the tilt frame, such as when the casting is found to be serious aluminum hanging, should immediately stop casting.

8. Open the water valve, start the pump, and determine the normal water pressure before casting.

Two, casting

1, open the furnace boiling water, release the aluminum liquid, after the filter, into the mold, when the aluminum liquid reaches 80% of the thermal cap, open the water valve into the casting pan, close the water valve, adjust the water pressure to 0.2Mpa or more, while opening the casting machine to start casting.

2, the casting process should pay attention to the stability of the control temperature, the smooth liquid level and the uniform metal flow.

3, casting at any time to observe the surface quality of the casting rod, when can not meet the internal control standards, the use of plug plug, on the mold, stop the casting.

4, it is strictly prohibited to install iron plates at the bottom of the ingot and under the lifting platform. Because the aluminum leakage in the casting is blocked by the iron plate, it is accumulated to a certain aluminum liquid, and it will have serious consequences when it encounters cold water.

5, after the aluminum liquid is filled with the flow trough, two technical workers lift the gate at the same time, and help to catch the aluminum liquid, so that the aluminum liquid is filled with each diverter in a short time, such as the diverter plate filled with aluminum liquid time is too long, it will cause the crystallizer to the aluminum liquid in the front has condensed, and the back has not condensed, resulting in aluminum leakage when falling.

6, precision aluminum die casting manufacturers talk about the mold leakage of aluminum in the casting, should be plugged in time with anti-leakage plug head, in the normal casting, workers can not leave the job.

7. When the casting begins to fall, if the number of aluminum leakage crystallizer roots is too much, the smelting furnace should be plugged in time to put aluminum water, and the aluminum liquid in the discharge groove should avoid the danger of too much aluminum leakage.

8, in the normal casting, aluminum liquid should be controlled at 70% height, not too full, such as aluminum liquid is too full, in case of sudden power failure trip, aluminum liquid will overflow on the shunt plate, causing danger.

9, at the beginning of the casting, the operator should pay special attention to the problem is to lift the gate aluminum liquid down to about 1 meter cast aluminum rod.

10, when the casting rod reaches the specified length, first plug the smelting furnace aluminum inlet, let the flow trough and flow tray aluminum liquid flow, close the casting machine, shut off the water.