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Heat-resisting white cast iron material and preparation method thereof

A white cast iron, heat-resistant technology, applied in the field of metal materials, can solve the problems of material toughness and tensile strength limitation, and achieve the effects of low production cost, good high temperature strengthening and toughening, and good heat resistance.

Inactive Publication Date: 2012-07-04
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

[0003] Although the cast iron uses a lot of rare and precious elements such as Mo, Cr, V, etc., it uses a lot of silicon at the same time, and the toughness and tensile strength of the material are greatly limited.

Method used

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  • Heat-resisting white cast iron material and preparation method thereof
  • Heat-resisting white cast iron material and preparation method thereof
  • Heat-resisting white cast iron material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of chrome-plated high carbon steel wire and nitriding iron wire:

[0031] The composition content is: C is 0.55%, Si is 0.18%, Mn is 0.45%, P<0.02%, S <0.02%, and the rest is high-carbon steel wire of Fe, and the diameter of high-carbon steel wire is 1mm;

[0032] The composition content is: C is 0.04%, Si is 0.2%, Mn is 0.25%, P<0.02%, S <0.025%, and the rest is Fe iron wire with a diameter of 1mm; the overall length of the iron wire and high-carbon steel wire used is equivalent , control the volume percentage of the two metal wires to be 5% of the material.

[0033] The surface of the iron wire is nitrided according to the conventional method, and the thickness of the nitrided layer is 50 microns; the surface of the high-carbon steel wire is chrome-plated according to the conventional method, and the thickness of the chrome-plated layer is 50 microns.

[0034] According to the conventional method of cleaning ball production, the above-mentioned chrome-pla...

Embodiment 2

[0038] White cast iron material matrix composition by weight percentage: C is 2.8%, Si is 2.2%, Mn is 0.7%, Gd is 2%, P<0.08%, S <0.25%, and the rest is Fe for batching;

[0039] The composition weight percentage content of high carbon steel wire is: C is 0.8%, Si is 0.21%, Mn is 0.65%, P<0.02%, S <0.02%, and the rest is Fe. High carbon steel wire diameter 1.5mm;

[0040] The composition weight percentage content of iron wire is: C is 0.06%, Si is 0.3%, Mn is 0.35%, P<0.02%, S<0.025%, and the rest is Fe. Iron wire diameter 1.5mm;

[0041] The iron wire and the high carbon steel wire used in the preparation process have the same overall length, and the volume percentage of the two metal wires in the material is controlled to be 40%.

[0042] The surface of the iron wire is nitrided according to the conventional method, and the thickness of the nitrided layer is 100 microns; the surface of the high-carbon steel wire is chrome-plated according to the conventional method, and th...

Embodiment 3

[0045] The matrix composition of white cast iron material is by weight percentage: C is 2.7%, Si is 1.9%, Mn is 0.6%, Gd is 0.9%, P<0.08%, S<0.25%, and the rest is Fe for batching.

[0046] The composition weight percentage content of high carbon steel wire is: C is 0.57%, Si is 0.19%, Mn is 0.55%, P<0.02%, S <0.02%, and the rest is Fe. High carbon steel wire diameter is 1.5mm

[0047] The composition weight percentage content of the iron wire is: C is 0.05%, Si is 0.25%, Mn is 0.3%, P<0.02%, S<0.025%, the rest is Fe, and the diameter of the iron wire is 2mm;

[0048] In the preparation process, the overall lengths of the iron wire and the high-carbon steel wire used are equivalent, and the volume percentage of the high-carbon steel wire and the iron wire in the material is controlled to be 30%.

[0049] The iron wire surface is nitrided, and the thickness of the nitrided layer is 80 microns; the surface of the high-carbon steel wire is chrome-plated, and the thickness of the...

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Abstract

The invention provides a heat-resisting white cast iron material and a preparation method thereof. The material has good performance, and the preparation method for the material is simple in process and low in production cost, and is suitable for industrial production. The heat-resisting white cast iron material takes white cast iron as a matrix; a metal wire group formed by iron wires and high carbon steel wires is distributed in the matrix; both the diameter of the used iron wires and the diameter of the used high carbon steel wires are 1 to 2 millimeters; the material contains 5 to 40 volume percent of the iron wires and the high carbon steel wires; and the diameter of the metal wire group is 10 to 15 centimeters.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a heat-resistant white cast iron material and a preparation method thereof. Background technique [0002] In the field of metal materials, heat-resistant cast iron has been widely valued as a low-cost heat-resistant material. CN200610163305.X application for a high-temperature ferritic heat-resistant cast iron with improved high-temperature strength and oxidation resistance, including: 2.5-3.8wt% of C, 5.0-7.0wt% of Si, 0.2-0.8wt% of Mn, 0.05wt% or less of P, 0.02wt% or less of S, 0.5-1.2wt% of Mo, 0.1wt% or less of Cr, 0.5wt% or less of V, 0.01-0.1wt% of Cr, 0.05 wt% or less of Sb, and the balance Fe. [0003] Although the cast iron uses a lot of rare and precious elements such as Mo, Cr, V, etc., it uses a lot of silicon at the same time, and the toughness and tensile strength of the material are greatly limited. Contents of the invention [0004] The object of the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/02C22C47/08C22C49/08C22C49/14C22C37/10C22C111/00C22C121/02
Inventor 王玲赵浩峰邱弈婷
Owner 金湖中博物联网科技有限公司
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