Vermicular graphite cast iron glass mold material and mold preparation method
A technology of vermicular graphite cast iron and glass molds, which is applied in the field of vermicular graphite cast iron glass mold materials and mold preparation, can solve the problems of casting stress of large materials, white holes, shrinkage cavities of rough castings, etc., to reduce the amount of matrix, reduce casting stress, The effect of increasing the degree of graphitization
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Embodiment 1
[0037] The material of the vermicular graphite cast iron glass mold is composed of the following chemical elements: carbon 3.9%, silicon 1.5%, manganese 0.15%, phosphorus<0.1%, sulfur<0.03%, magnesium<0.05%, the rest is iron, and other unavoidable The impurity element; The preparation method of described vermicular graphite cast iron glass mold comprises the following steps:
[0038] A. Melting: According to the above chemical composition, add steel scrap and Q10 pig iron to the smelting furnace quantitatively, add the returned material after the scrap steel and pig iron are melted, and control the weight percentage of the returned material in the added pig iron to 30%, and the temperature of the molten iron When it reaches 1450°C, use a silicon carbon meter for process control, mainly to control the silicon content. If the silicon content is within the range, there is no need to adjust it. If it is higher than the upper limit, then add steel scrap for adjustment. Adjustment, ...
Embodiment 2
[0042] The material of the vermicular graphite cast iron glass mold is composed of the following chemical elements: carbon 4.0%, silicon 1.6%, manganese 0.2%, phosphorus<0.1%, sulfur<0.03%, magnesium<0.05%, the rest is iron, and other unavoidable The impurity element; The preparation method of described vermicular graphite cast iron glass mold comprises the following steps:
[0043] A. Melting: According to the above chemical composition, add steel scrap and Q10 pig iron to the smelting furnace quantitatively, add the returned material after the scrap steel and pig iron are melted, and control the weight percentage of the returned material in the added pig iron to 30%, and the temperature of the molten iron When it reaches 1500°C, use a silicon carbon meter for process control, mainly to control the silicon content. If the silicon content is within the range, there is no need to adjust it. If it is higher than the upper limit, add steel scrap for adjustment. If it is lower than...
Embodiment 3
[0047] The material of the vermicular graphite cast iron glass mold is composed of the following chemical elements: carbon 3.8%, silicon 1.4%, manganese 0.1%, phosphorus<0.1%, sulfur<0.03%, magnesium<0.05%, the rest is iron, and other unavoidable The impurity element; The preparation method of described vermicular graphite cast iron glass mold comprises the following steps:
[0048] A. Melting: According to the above chemical composition, add steel scrap and Q10 pig iron to the smelting furnace quantitatively, add the returned material after the scrap steel and pig iron are melted, and control the weight percentage of the returned material in the added pig iron to 30%, and the temperature of the molten iron When it reaches 1450°C, use a silicon carbon meter for process control, mainly to control the silicon content. If the silicon content is within the range, there is no need to adjust it. If it is higher than the upper limit, then add steel scrap for adjustment. Adjustment, a...
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