Heat resistant and corrosion resistant vermicular cast iron material and preparation method thereof

A technology of vermicular graphite cast iron and corrosion resistance, which is applied in the field of heat-resistant and corrosion-resistant vermicular graphite cast iron materials and their preparation, can solve the problems affecting the heat resistance, heat and corrosion resistance, and limited toughness of materials, so as to improve the heat resistance and corrosion resistance. Corrosion, low production cost and simple preparation process

Inactive Publication Date: 2011-05-25
金湖中博物联网科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The toughness of these cast irons is still limited, so it also affects the improvement of the material's heat resistance or heat resistance and corrosion resistance.

Method used

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  • Heat resistant and corrosion resistant vermicular cast iron material and preparation method thereof
  • Heat resistant and corrosion resistant vermicular cast iron material and preparation method thereof
  • Heat resistant and corrosion resistant vermicular cast iron material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Composition of compacted graphite iron material matrix:

[0029] Preparation of chrome-plated iron wire and cobalt-plated iron wire: Take the iron wire with a diameter of 1mm and the composition weight percentage: C is 0.05%, Si is 0.2%, Mn is 0.40%, P<0.02%, S<0.025%, and the rest is Fe . Iron wire accounts for 5% of the volume of the material.

[0030] Chromium-plating on the surface of half of the iron wire and cobalt-plating on the other half of the iron wire according to conventional methods; respectively form chrome-plated iron wire and cobalt-plated iron wire, the thickness of the chromium-plated and cobalt-plated layers is 100 μm, and the overall length of the formed chromium-plated iron wire and cobalt-plated iron wire is equivalent;

[0031] According to the conventional method of cleaning ball production, each of the above-mentioned chrome-plated iron wire and cobalt-plated iron wire takes one wire to form a spherical mixed double-wire wire group (two wires...

Embodiment 2

[0035] The matrix composition of vermicular graphite cast iron material is by weight percentage: C is 3.5%, Si is 3.9%, Mn is 0.4%, Dy is 0.7%, Zr is 0.7%, P<0.03%, S <0.025%, and the rest is Fe for batching .

[0036] The weight percentage of iron wire components is: C is 0.07%, 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.

[0037] Chromium-plated on the surface of half of the iron wire, and cobalt-plated on the surface of the other half of the iron wire according to the conventional method; the chrome-plated iron wire and the cobalt-plated iron wire were formed respectively, the thickness of the chrome-plated and cobalt-plated layers were both 500 μm, and the overall length of the two was 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...

Embodiment 3

[0040] The matrix composition of vermicular graphite cast iron material is by weight percentage: C is 3.4%, Si is 3.8%, Mn is 0.13%, Dy is 0.45%, Zr is 0.6%, P<0.03%, S <0.025%, and the rest is Fe.

[0041] The weight percentage of iron wire components is: C is 0.06%, Si is 0.25%, Mn is 0.43%, 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.

[0042] According to the conventional method, half of the iron wire surface is chrome-plated, and the other half of the iron wire surface is cobalt-plated; the chrome-plated iron wire and the cobalt-plated iron wire are respectively formed. 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 diameter is 15cm.

[0043] During the preparation, 0.7% of the molten iron mass 75 ferrosilicon inoculant and 0.5% of the Dy-containing rare earth vermicular agent we...

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Abstract

The invention provides a heat resistant and corrosion resistant vermicular cast iron material and a preparation method thereof. The material has good performances. The preparation method has simple process and low production cost and is suitable for industrial production. The material uses vermicular cast iron as matrix and metal wire balls formed by steel wires are distributed in the matrix, wherein the diameter of the steel wires is 1-2mm, the diameter of the metal wire balls is 10-15cm and the volume percentage of the steel wires to the material of the invention is 5-40%.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a heat-resistant and corrosion-resistant vermicular graphite cast iron material and a preparation method thereof. Background technique [0002] In the field of metal materials, heat-resistant and corrosion-resistant cast iron has been widely valued as a low-cost heat-resistant and corrosion-resistant material. [0003] Application No. CN200810139616.1 discloses a special high-performance compacted graphite cast iron for coke oven protective furnace iron parts, which belongs to the field of compacted graphite cast iron casting. The chemical composition is (weight percent) carbon C 3.5-3.7%, silicon Si 2.2-2.9%, manganese Mn ≤ 0.2%, phosphorus P < 0.08%, sulfur S < 0.04%, chromium Cr 0.4-0.6%, titanium Ti 0.2- 0.3%. Compared with the existing vermicular graphite cast iron, the creep rate is stable between 60% and 80%. The tensile strength reaches 455.6-489MPa, the elongation r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/02C22C47/08C22C49/08C22C49/14C22C37/00C22C111/00C22C121/02
Inventor 王玲赵浩峰许雨蒙
Owner 金湖中博物联网科技有限公司
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