Collection! Aluminum and aluminum alloy casting!-SINO EQUIPMENT & REFRACTORY （JIANGSU）CO., LTD.

Collection! Aluminum and aluminum alloy casting!

Release time:

2024-02-23

The use of intermediate alloys is an effective way to add high melting point and refractory metals in alloy production, but in the preparation of intermediate alloys and some specific environmental conditions, the direct melting of high melting point metals is inevitable.

The operation steps and essentials for the addition and melting of metal silicon blocks and electrolytic copper plates in liquid primary aluminum (or alloy melt) are as follows: (for the melting of other high melting points and refractory metals, the corresponding parameters can be adjusted, refer to the following steps)

1. Set the output (generally set at 80% of the capacity of the smelting furnace) and calculate the quantity of melt and metal added into the furnace (due to the easy burning of metal silicon, the actual yield of 98% is considered in the calculation);

2. To be added metal refinement:

⑴ Artificial crushing of metal silicon blocks: use a hand hammer to break the large blocks to a particle size of 30-40mm, not too fine, and try to make the particles uniform;

⑵ Mechanical cutting of electrolytic copper plate: use a plate shearing machine to cut the cathode copper plate into small pieces of about 80 × 160mm.

3. The measurement of particles (or blocks) into the furnace (the quantity into the furnace should be slightly lower than the calculated quantity into the furnace, and the metal blocks must be uniform

laying on the bottom of the smelting furnace);

4. Liquid primary aluminum (or alloy melt) into the furnace (the furnace should be quickly, the melt must be completely immersed in all metal blocks), record the accurate number of furnace;

5. According to the number of melt into the furnace, calculate the supplementary metal block into the furnace;

6. Adjust the furnace temperature (adjust the melt temperature to 950 ℃ when melting silicon; Melting copper at 800 ℃) and keep the temperature (adjustment and heat preservation for 35 minutes in total);

7. Stir the melt (the stirring should be rapid and thorough, and the metal blocks should be concentrated into piles after stirring);

8. Repeat the process of temperature control, heat preservation and stirring (the same essentials);

9. Sampling and analyzing the content of molten metal in the melt. If the melting is completed, the next operation can be carried out. Otherwise, the process of temperature adjustment and heat preservation and stirring shall be repeated until the added metal is completely melted;

10. After the final stirring, the melt temperature is adjusted (the molten silicon is adjusted to 780 ℃ and the molten copper is 720 ℃), and then the casting is started.

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