Corrosion-resistant alloy cast iron and preparation method thereof

A corrosion-resistant alloy and cast iron technology, which is applied in the field of cast iron, can solve problems such as unsatisfactory anti-corrosion effects, and achieve the effects of less equipment, reasonable economy, and easy industrialization.

Active Publication Date: 2011-12-07
安徽省鸿申压缩机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the wear or peeling of the anti-corrosion coating, the above-mentioned parts of the reciprocating piston compressor are still subject to corrosion by corrosive gases and fail prematurely, and the anti-corrosion effect is not satisfactory

Method used

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  • Corrosion-resistant alloy cast iron and preparation method thereof
  • Corrosion-resistant alloy cast iron and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing corrosion-resistant alloy cast iron, the method comprising the steps of:

[0030] 1) Preparation of charge: according to the process weight of the corrosion-resistant alloy cast iron poured, weigh 720kg of Z18 newborn iron, 190kg of returned furnace iron, 58.5kg of scrap steel, 4kg of 75% ferrosilicon, 2kg of 65% ferromanganese, and 9kg of 99% electrolytic copper , 9kg of 99% electrolytic nickel, 7.5kg of 99% electrolytic chromium, a total of 1000kg of charge;

[0031] 2) Smelting: Put the prepared newborn iron, returned iron, scrap steel, ferrosilicon, and ferromanganese into the intermediate frequency electric furnace, and make them energized and melted. The melting temperature is 1300°C, and the melting time is 2.5 hours. The temperature is 1450°C. After removing the slag, add electrolytic copper, electrolytic nickel, and electrolytic chromium, and keep the temperature for 18 minutes to complete the smelting;

[0032]3) Inoculation treatment: ...

Embodiment 2

[0037] A method for preparing corrosion-resistant alloy cast iron, the method comprising the steps of:

[0038] 1) Preparation of charge: according to the process weight of the corrosion-resistant alloy cast iron poured, weigh 720kg of Z18 newborn iron, 190kg of returned furnace iron, 50kg of scrap steel, 4kg of 75% ferrosilicon, 2kg of 65% ferromanganese, 12kg of 99% electrolytic copper, 99% electrolytic nickel 12kg, 99% electrolytic chromium 10kg, a total of 1000kg charge;

[0039] 2) Smelting: Put the prepared newborn iron, returned iron, scrap steel, ferrosilicon, and ferromanganese into the intermediate frequency electric furnace, and make them energized and melted. The melting temperature is 1350°C, and the melting time is 2 hours. The temperature is 1500°C. After removing the slag, add electrolytic copper, electrolytic nickel, and electrolytic chromium, and keep warm for 15 minutes to complete the smelting;

[0040] 3) Inoculation treatment: when the amount of molten i...

Embodiment 3

[0045] A method for preparing corrosion-resistant alloy cast iron, the method comprising the steps of:

[0046] 1), preparing charge: according to the process weight of the corrosion-resistant alloy cast iron that needs to be poured, weigh 720kg of Z18 newborn iron, 190kg of returned furnace iron, 67kg of scrap steel, 4kg of 75% ferrosilicon, 2kg of 65% ferromanganese, 6kg of 99% electrolytic copper, 99% electrolytic nickel 6kg, 99% electrolytic chromium 5kg, a total of 1000kg charge;

[0047] 2) Melting: Put the prepared newborn iron, returned iron, scrap steel, ferrosilicon, and ferromanganese into the intermediate frequency electric furnace, and make them energized and melted. The melting temperature is 1250°C, and the melting time is 3 hours. The temperature is 1400°C. After removing the slag, add electrolytic copper, electrolytic nickel, and electrolytic chromium, and keep the temperature for 20 minutes to complete the smelting;

[0048] 3) Inoculation treatment: when th...

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Abstract

The invention relates to corrosion-resistant alloy cast iron and a preparation method thereof. The cast iron comprises the following components in percentage by weight: 2.8-3.2 percent of carbon, 1.6-2.2 percent of silicon, 0.4-0.8 percent of manganese, 0.6-1.2 percent of copper, 0.5-1.0 percent of chromium, 0.6-1.2 percent of nickel, 0.07-0.09 percent of phosphorus, 0.04-0.06 percent of sulfur, and the balance of ferrum. The cast iron preparation method comprises the following steps of preparing furnace charge, smelting, inoculation treating, casting and annealing. According to the invention, the components of the cast iron are economic and reasonable, the corrosion-resistant performance to corrosive gas can be durable; in addition, the preparation method provided by the invention has the advantages of simple process, less used equipment and convenience for industrialized popularization.

Description

technical field [0001] The present invention relates to a kind of cast iron, more specifically, the present invention relates to a kind of corrosion-resistant alloy cast iron, meanwhile, the present invention also relates to a kind of preparation method of said corrosion-resistant alloy cast iron. Background technique [0002] With the rapid development of scientific research, chemical industry, fertilizer, petroleum, medicine, vinylon, gas industry and other fields, various special gases are now widely used, especially compressed corrosive gases (such as: carbon dioxide, sulfur dioxide, fluorine, Chlorine, hydrogen chloride, hydrogen sulfide, etc.) required reciprocating piston compressors and supporting storage, transportation containers, pipelines, etc. are increasingly in demand, so the development of a preparation method for corrosion-resistant alloy cast iron has been mentioned on the agenda. [0003] Monel alloy is a kind of alloy steel made of metal nickel as the bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/08C22C33/08
Inventor 施琰王万军施恩明
Owner 安徽省鸿申压缩机有限公司
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