Alloy ingot containing magnesium cerium and preparation method

[0023] in figure 2 , image 3 Medium: A method for preparing an alloy ingot containing magnesium and cerium, which mainly includes the following steps:

[0024] Step ①, ingredients:

[0025] A magnesium-cerium-containing alloy ingot. The alloying elements are proportioned according to weight percentages: aluminum 20% to 25%, silicon 0.2% to 0.3%, magnesium 1.1% to 1.9%, rare earth cerium 0.5% to 0.6%, The balance is zinc;

[0026] Step ②, smelting:

[0027] Put the proportioned metal into the smelting furnace, heat it up to 650 degrees, combine magnetic stirring and manual stirring to make the components uniformly alloyed to avoid aluminum segregation, remove the scum from the inner surface of the furnace, and then sample at the furnace mouth , Laboratory tests whether the ingredients are uniform;

[0028] Step ③, pouring: the pouring time should not be too fast, otherwise it is easy to produce bubbles, slag inclusions, and cracks. The pouring is 3 minutes. After pouring, the surface slag is removed again for 1-2 minutes and the skin is quickly rubbed;

[0029] The movable zinc chute is used for pouring; the movable zinc chute includes a tank shell 101; the upper end of the tank shell 101 is provided with a shoulder groove 102, and the inner wall of the bottom is provided with a number of movable zinc chutes that cooperate with the through holes 2 The disassembled column 103; the arc transition section 104 is provided between the shoulder groove 102 and the groove shell 101; the pouring space of the magnesium-cerium alloy ingot is formed between the groove shell 101 and the column 103; The draft angle of the side wall of the trough shell 101 is opposite to that of the side wall of the column 103; the upper surface of the column 103 is flush with the upper surface of the trough shell 101, which is convenient for forming the magnesium-cerium alloy ingot; , The said shoulder groove 102, in the pouring, is similar to the role of the pouring riser, not only is conducive to the formation of magnesium-cerium-containing alloy ingots, reducing defects, but also cooperates with the arc transition section 104 to facilitate demolding; After the said column 103 is formed with the magnesium-cerium-containing alloy ingot, it is demolded together with the magnesium-cerium-containing alloy ingot, and then separated from the magnesium-cerium-containing alloy ingot. The column 103 can not only be reused, but also is beneficial to the magnesium-cerium-containing alloy ingot. Forming and demoulding of alloy ingots.

[0030] Step ④, post-molding treatment; when the alloy liquid is poured into the movable zinc chute for 25-30 minutes, observe that the upper surface has been completely solidified and formed, then demold, and check whether the magnesium-cerium alloy ingot has burrs during the mold ejection process , Flash, shrinkage, crack, shrinkage, scum.

[0031] The addition of rare earth cerium element further improves the surface hardness and conductivity of the product without affecting the corrosiveness of the coating, so that it has better scratch resistance, and the scope of use extends to the field of home appliances.

[0032] The first embodiment:

[0033] A preparation method of magnesium-cerium-containing alloy ingots mainly includes the following steps:

[0034] Step ①, ingredients:

[0035] An alloy ingot containing magnesium and cerium. The alloying elements are proportioned according to weight percentages: aluminum 20%, silicon 0.2%, magnesium 1.1%, rare earth cerium 0.5%, and the balance is zinc;

[0036] Step ②, smelting:

[0037] Put the proportioned metal into the smelting furnace, heat it up to 650 degrees, combine magnetic stirring and manual stirring to make the components uniformly alloyed to avoid aluminum segregation, remove the scum from the inner surface of the furnace, and then sample at the furnace mouth , Laboratory tests whether the ingredients are uniform;

[0038] Step ③, pouring: use a movable zinc chute for pouring; the pouring time should not be too fast, otherwise it is easy to produce bubbles, slag inclusions, and cracks. The pouring takes 3 minutes. After pouring, the surface slag is removed and the skin is quickly rubbed after 1 minute;

[0039] Step ④, post-molding treatment; when the alloy liquid is poured into the movable zinc chute for 25 minutes, observe that the upper surface has been completely solidified and formed, and then demold, and check whether the magnesium-cerium-containing alloy ingot has burrs or fly Edges, shrinkage holes, cracks, shrinkage porosity, scum.

[0040] Scratch load test is adopted. The sapphire test needle with a tip radius of 0.05mm is perpendicular to the test part, adjusted to a load of 0.0196N-0.196N, and the test part is moved 20mm. Afterwards, visually observe whether the test part is scratched, and scratches will occur. The smallest scratch load in the test is the actual scratch load of the test. After testing, the hardness of the magnesium-cerium-containing alloy ingot is between 135HV-155HV.

[0041] The second embodiment:

[0042] A preparation method of magnesium-cerium-containing alloy ingots mainly includes the following steps:

[0043] Step ①, ingredients:

[0044] A magnesium-cerium-containing alloy ingot. The alloying elements are proportioned according to weight percentages: 22% aluminum, 0.22% silicon, 1.3% magnesium, 0.52% rare earth cerium, and the balance is zinc;

[0045] Step ②, smelting:

[0046] Put the proportioned metal into the smelting furnace, heat it up to 650 degrees, combine magnetic stirring and manual stirring to make the components uniformly alloyed to avoid aluminum segregation, remove the scum from the inner surface of the furnace, and then sample at the furnace mouth , Laboratory tests whether the ingredients are uniform;

[0047] Step ③, pouring: use a movable zinc chute for pouring; the pouring time should not be too fast, otherwise it is easy to produce bubbles, slag inclusions, and cracks. The pouring takes 3 minutes. After pouring, the surface slag is removed and the skin is quickly rubbed after 1 minute;

[0048] Step ④, post-molding treatment; when the alloy liquid is poured into the movable zinc chute for 25 minutes, observe that the upper surface has been completely solidified and formed, and then demold, and check whether the magnesium-cerium-containing alloy ingot has burrs or fly Edges, shrinkage holes, cracks, shrinkage porosity, scum.

[0049] Scratch load test is adopted. The sapphire test needle with a tip radius of 0.05mm is perpendicular to the test part, adjusted to a load of 0.0196N-0.196N, and the test part is moved 20mm. Afterwards, visually observe whether the test part is scratched, and scratches will occur. The smallest scratch load in the test is the actual scratch load of the test. After testing, the hardness of the magnesium-cerium-containing alloy ingot is between 135HV-155HV.