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Cast iron with high strength, high temperature resistance and corrosion resistance and method for preparing same

A manufacturing method and high-temperature-resistant technology, which is applied in the field of special cast iron, can solve problems such as the inability to simultaneously meet the requirements of high-strength, high-temperature resistance, and corrosion resistance of cast iron, and single performance.

Inactive Publication Date: 2013-05-01
WUHU JINMAO FLUID TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional special cast iron has single performance and cannot meet the requirements of cast iron for high strength, high temperature resistance and corrosion resistance at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A. The charge is configured according to the parts by weight. The charge includes: 35 parts of Z14# pig iron, 30 parts of HT250 recycle charge, 20 parts of steel scrap, 3.0 parts of ferrochrome alloy, 0.7 part of ferromolybdenum alloy, 1.5 parts of pure copper, and 6 parts of aluminum ingot; Configure 0.5 parts of inoculant;

[0032] B. Smelting and smelting process:

[0033] First spread a layer of Z14# pig iron on the bottom of the electric furnace, subject to covering the bottom of the furnace, then start the furnace at 40% power, increase the power of the electric furnace to 90% after 5 minutes, and continuously add the remaining Z14# pig iron, and HT250 furnace charge, scrap steel, pure copper, ferromolybdenum alloy and ferrochrome alloy, add aluminum ingot to melt after all the above charge materials are melted. After all the furnace materials are melted, adjust the element composition, and then heat up to 1450°C to release from the furnace;

[0034] C. Inocu...

Embodiment 2

[0038] A. The charge is configured according to the parts by weight, and the charge includes: the charge includes: 40 parts of Z14# pig iron, 35 parts of HT250 recycle charge, 25 parts of scrap steel, 3.2 parts of ferrochrome alloy, 0.77 part of ferromolybdenum alloy, 1.65 parts of pure copper, 7.1 parts of aluminum ingot; Configure 0.6 parts of inoculant by parts by weight;

[0039] B. Smelting and smelting process:

[0040] First spread a layer of Z14# pig iron on the bottom of the electric furnace, subject to covering the bottom of the furnace, then start the furnace at 40% power, increase the power of the electric furnace to 90% after 5 minutes, and continuously add the remaining Z14# pig iron, and HT250 furnace charge, scrap steel, pure copper, ferromolybdenum alloy and ferrochrome alloy, add aluminum ingot to melt after all the above charge materials are melted. After all the furnace materials are melted, adjust the elemental composition, and then heat up to 1470°C to...

Embodiment 3

[0045] A. The charge is configured according to the parts by weight. The charge includes: 45 parts of Z14# pig iron, 40 parts of HT250 recycle charge, 30 parts of steel scrap, 3.5 parts of ferrochrome alloy, 0.8 part of ferromolybdenum alloy, 1.8 parts of pure copper, and 8 parts of aluminum ingot; Configure 0.7 inoculants;

[0046] B. Smelting and smelting process:

[0047] First spread a layer of Z14# pig iron on the bottom of the electric furnace, subject to covering the bottom of the furnace, then start the furnace at 40% power, increase the power of the electric furnace to 90% after 10 minutes, and continuously add the remaining Z14# pig iron, and HT250 furnace charge, scrap steel, pure copper, ferromolybdenum alloy and ferrochrome alloy, add aluminum ingot to melt after all the above charge materials are melted. After all the furnace materials are melted, adjust the element composition, and then raise the temperature to 1480°C to release from the furnace;

[0048] C....

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Abstract

The invention discloses cast iron with high strength, high temperature resistance and corrosion resistance, which is made from the following ingredients in percentage by weight: 2.7-2.9% of C, 1.5-1.8% of Si, 0.6-0.8% of Mn, 4.0-6.0% of Al, 1.5-1.8% of Cu, 0.4-0.5% of Mo, 1.0-2.0% of Cr and the rest percent of Fe, wherein the content of P is less than or equal to 0.05% and the content of S is less than or equal to 0.05%. With the adoption of the technical scheme, the cast iron has high strength and meanwhile has excellent high temperature resistance and corrosion resistance. The invention further discloses a method for preparing the cast iron.

Description

technical field [0001] The invention relates to a special cast iron, in particular to a high-strength, high-temperature, corrosion-resistant cast iron; the invention also relates to a manufacturing method of the cast iron. Background technique [0002] At present, special cast irons are more and more widely used, and the special cast irons include high-strength, high-temperature-resistant, corrosion-resistant cast irons and other cast irons. However, the traditional special cast iron has single performance and cannot meet the requirements of high strength, high temperature resistance and corrosion resistance of cast iron at the same time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-strength high-temperature-resistant and corrosion-resistant cast iron with high temperature and corrosion resistance and high strength; the further technical problem to be solved by the present invention is to provide a meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C22C37/06C22C33/08
Inventor 孙述全吴明金
Owner WUHU JINMAO FLUID TECH CO LTD