Heat-resisting vermicular graphite cast iron material and preparation method thereof
A vermicular graphite cast iron and heat-resistant technology, applied in the field of heat-resistant vermicular graphite cast iron materials and their preparation, can solve the problems of affecting the heat resistance performance and poor toughness of cast iron, achieving low production cost, improving heat resistance, and facilitating industrial production. Effect
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Embodiment 1
[0029] Preparation of chrome-plated iron wire and nickel-plated iron wire:
[0030] Take the iron wire with a diameter of 1mm and composition weight percentage: C is 0.08%, Si is 0.2%, Mn is 0.35%, P<0.02%, S<0.025%, and the rest is Fe. The volume percentage of the control iron wire in the material is 5%.
[0031] According to the conventional method, the surface of half of the iron wire is plated with chrome, and the surface of the other half of the iron wire is plated with nickel; the chrome-plated iron wire and the nickel-plated iron wire are formed respectively; the thickness of the coating is 100 μm; the overall length of the two coated iron wires is equivalent.
[0032] According to the conventional method of cleaning ball production, each of the above-mentioned chrome-plated iron wire and nickel-plated iron wire takes one wire to form a spherical mixed double-wire wire group (two wires are formed at the same time to form a double-wire wire group, and the forming can be ...
Embodiment 2
[0036] The weight percentage of the matrix composition of vermicular graphite cast iron material: C is 3.6%, Si is 3.5%, Mn is 0.4%, Dy is 0.7%, Gd is 0.7%, P<0.03%, S <0.025%, and the rest is Fe .
[0037] The weight percentage of iron wire components is: C is 0.1%, Si is 0.3%, Mn is 0.45%, P<0.02%, S<0.025%, and the rest is Fe. The wire diameter is 2mm. Iron wire accounts for 40% of the volume of the material.
[0038] The surface of half of the iron wire is plated with chromium, and the surface of the other half of the iron wire is nickel-plated according to a conventional method; respectively, chrome-plated iron wire and nickel-plated iron wire are formed; the thickness of the nickel-plated and chrome-plated layers is 500 μm. The overall length of the two coated wires is equivalent. The conventional method that cleaning ball is produced makes the double-wire wire group that two kinds of metal wires of band plating mix, and the wire group diameter is 10cm.
[0039] Duri...
Embodiment 3
[0041] The weight percentage of the matrix composition of vermicular graphite cast iron material: C is 3.4%, Si is 3.4%, Mn is 0.15%, Dy is 0.5%, Gd is 0.5%, P<0.03%, S <0.025%, and the rest is Fe .
[0042] The weight percentage of iron wire components is: C is 0.09%, Si is 0.25%, Mn is 0.4%, P<0.02%, S<0.025%, and the rest is Fe. The wire diameter is 1.5mm. Iron wire accounts for 20% of the volume of the material.
[0043] According to the conventional method, the surface of half of the above-mentioned iron wire is plated with chrome, and the surface of the other half of the iron wire is plated with nickel; respectively, chrome-plated iron wire and nickel-plated iron wire are formed; the thickness of the nickel-plated and chrome-plated layers is 200 μm. The overall length of the two coated wires is equivalent. The conventional method that cleaning ball is produced makes the two-wire metal wire group that two kinds of metal wires of band plating mix, and the wire group dia...
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