High-aluminum high-temperature-resistant nodular cast iron containing Mo and Cr elements as well as preparation method of high-aluminum high-temperature-resistant nodular cast iron
A technology of nodular cast iron and high temperature resistance, which is applied in the field of alloy materials, can solve the problems of low mechanical properties and poor thermal shock resistance, and achieve good thermal shock performance, good casting molding performance, and good comprehensive mechanical properties.
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Embodiment 1
[0018] A high-aluminum high-temperature-resistant ductile iron with molybdenum-chromium elements, the weight percentage of each component is: C 1.0%, Si 3.0%, Al19.5%, Mo 1.0%, Cr 0.5%, Cu 1.5%, impurity element Mg≦0.06 %, impurity element S≦0.06%, impurity element P≦0.15%, impurity element Mn≦0.7%, and the rest is Fe. Its concrete preparation method is as follows:
[0019] a. Ingredients and melting, configure the alloy according to the above target ingredients, add 150 kg of cast iron and 90 kg of scrap steel into an intermediate frequency induction furnace with a standard capacity of 500 kg, and after the metal is melted, add industrial ferrosilicon, industrial ferromolybdenum, chromium The iron and copper wires reach the above design composition, and add industrial pure aluminum ingots through the bell jar pressing method. During the smelting process of ingredients, considering that about 5% of C will be burned, Si will be increased in the subsequent inoculation process, a...
Embodiment 2
[0024] A high-aluminum high-temperature-resistant ductile iron with molybdenum-chromium elements, the weight percentage of each component is: C 3.0%, Si 0.15%, Al26%, Mo 0.3%, Cr 2.5%, Cu 0.3%, impurity element Mg≦0.06%, Impurity element S≦0.06%, impurity element P≦0.15%, impurity element Mn≦0.7%, and the rest is Fe. Its concrete preparation method is as follows:
[0025] a. Batching and melting, configure the alloy according to the above target ingredients, add 150 kg of cast iron and 60 kg of scrap steel into an intermediate frequency induction furnace with a standard capacity of 500 kg, and after the metal is melted, add industrial ferrosilicon, industrial ferromolybdenum, and chromium The iron and copper wires reach the above design composition, and add industrial pure aluminum ingots through the bell jar pressing method. During the smelting process of ingredients, considering that about 5% of C will be burned, Si will be increased in the subsequent inoculation process, an...
Embodiment 3
[0030] A high-aluminum high-temperature-resistant ductile iron with molybdenum-chromium elements, the weight percentage of each component is: C 2.0%, Si 1.6%, Al22%, Mo 3.0%, Cr 1.5%, Cu 1.0%, impurity element Mg≦0.06%, Impurity element S≦0.06%, impurity element P≦0.15%, impurity element Mn≦0.7%, and the rest is Fe. Its concrete preparation method is as follows:
[0031] a. Batching and melting, configure the alloy according to the above target ingredients, add 150 kg of cast iron and 60 kg of scrap steel into an intermediate frequency induction furnace with a standard capacity of 500 kg, and after the metal is melted, add industrial ferrosilicon, industrial ferromolybdenum, and chromium The iron and copper wires reach the above design composition, and add industrial pure aluminum ingots through the bell jar pressing method. During the smelting process of ingredients, considering that about 5% of C will be burned, Si will be increased in the subsequent inoculation process, and...
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