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High-performance chrome-free high-boron cast iron composite material and preparation method thereof

A composite material and high-performance technology, applied in the field of steel wear-resistant materials, can solve the problems of high production cost, achieve the effect of improving performance, low cost, and improving distribution form

Inactive Publication Date: 2014-01-22
JIANGSU YINYU MOLD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the current boron-containing wear-resistant alloys are actually developed on the basis of chromium alloys, and they all contain more alloying elements such as chromium, nickel, molybdenum, vanadium, etc., and the production cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The chromium-free high boron cast iron composite material in the present embodiment, its chemical composition is (percentage by weight): C0.43%, B1.1%, Si0.65%, Mn0.56%, Ce0.1%, P0. 04%, S0.04%, the balance is iron and impurities, the hardness is 48HRC, and the impact toughness is 11J.

[0033]For smelting, a 100kg medium frequency induction furnace is used. The batching is carried out according to the content and yield of each element in the raw material. The composition (percentage by weight) of the raw materials used is as follows:

[0034] Ferroboron: B20%, Si0.5%, P0.04%, C0.3%, S0.02%, the balance is iron and unavoidable impurities;

[0035] Pig iron: C3.5%, Si2.5%, Mn2.7%, P0.09%, S0.07%, the balance is iron and unavoidable impurities;

[0036] Steel scrap: C0.3%, Si0.3%, Mn0.4%, P0.06%, S0.02%, the balance is iron and unavoidable impurities;

[0037] Ferromanganese: Mn60%, C2.5%, P0.05%, S0.04%, Si3.5%, the balance is iron and unavoidable impurities;

[003...

Embodiment 2

[0048] The chromium-free high boron cast iron composite material in the present embodiment, its chemical composition is (percentage by weight): C0.56%, B4.2%, Si0.9%, Mn0.8%, Ce0.16%, P0. 08%, S0.05%, the balance is iron and impurities, the hardness and impact toughness are 55HRC and 12J respectively.

[0049] For smelting, a 100kg medium frequency induction furnace is used. The batching is carried out according to the content and yield of each element in the raw material. The composition (percentage by weight) of the raw materials used is as follows:

[0050] Ferroboron: B20%, Si0.5%, P0.04%, C0.3%, S0.04%, the balance is iron and unavoidable impurities;

[0051] Pig iron: C4.2%, Si2.0%, Mn5%, P0.09%, S0.08%, the balance is iron and unavoidable impurities;

[0052] Steel scrap: C0.2%, Si0.3%, Mn0.64%, P0.09%, S0.05%, the balance is iron and unavoidable impurities;

[0053] Ferromanganese: Mn60%, C4.0%, P0.08%, S0.05%, Si3.0%, the balance is iron and unavoidable impurities...

Embodiment 3

[0064] The chromium-free high-boron cast iron composite material in the present embodiment has a chemical composition (percentage by weight): C0.50%, B4%, Si0.9%, Mn0.8%, Ce0.09%, P0.08% , S0.04%, the balance is iron and impurities, the hardness and impact toughness are 60HRC and 10J respectively.

[0065] For smelting, a 100kg medium frequency induction furnace is used. The batching is carried out according to the content and yield of each element in the raw material. The composition (percentage by weight) of the raw materials used is as follows:

[0066] Ferroboron: B21%, Si0.5%, P0.05%, C0.3%, S0.25%, the balance is iron and unavoidable impurities;

[0067] Pig iron: C3.5%, Si2.5%, Mn2.5%, P0.05%, S0.09%, the balance is iron and unavoidable impurities;

[0068] Steel scrap: C0.2%, Si0.4%, Mn0.4%, P0.05%, S0.05%, the balance is iron and unavoidable impurities;

[0069] Ferromanganese: Mn70%, C2.2%, P0.05%, S0.02%, Si3.5%, the balance is iron and unavoidable impurities; ...

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Abstract

The invention discloses a high-performance chrome-free high-boron cast iron composite material and a preparation method thereof, and belongs to the field of steel wear-resistant materials. Alloy comprises chemical components in percentage by weight as follows: 0.43%-0.58% of C, 1.1%-4.6% of B, 0.65%-0.9% of Si, 0.55%-1.1% of Mn, 0.02%-0.21% of Ce, 0.02%-0.05% of S, 0.04%-0.09% of P and the balance of Fe and unavoidable trace impurities, the hardness is 45 HRC-58 HRC, and the impact toughness is 10 J-20 J. The alloy is produced by an electric furnace, smelt, cast and used after thermal treatment; and the alloy doesn't contain chrome and is low in price, good in combination property, low in production cost, simple in process and high in operability.

Description

technical field [0001] The invention relates to the field of iron and steel wear-resistant materials, in particular to a high-performance chromium-free high-boron cast iron composite material and a preparation method thereof. Background technique [0002] Chromium is a common element used to improve the properties of steel materials. In recent years, due to the scarcity of resources and skyrocketing prices, the application of chromium-containing ferro-based casting alloys has become more and more restricted. As an abundant element in the earth's crust, boron has recently been paid attention to its role in iron and steel materials. [0003] In the early 1990s, researchers from the Materials Department of Queensland University in Australia developed iron-chromium-boron alloys by adding some boron to high-chromium alloys. Subsequently, some researchers developed boron-containing chromium-based wear-resistant alloys based on chromium-based alloys, as follows: Chinese invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10C22C33/08
Inventor 黎振华张新房王卫浩陈小妹柴建荣
Owner JIANGSU YINYU MOLD MATERIAL
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