Abrasion resistant and high-hardness high chromium cast iron and production process thereof

A high chromium cast iron, production process technology, applied in the field of metal casting, can solve the problems of poor wear resistance, short service life, unstable quality, etc., to improve tensile properties, increase microhardness and wear resistance, The effect of improving cutting performance

Inactive Publication Date: 2017-09-05
安徽巨泰机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As far as the production process of high chromium cast iron is concerned, on the premise of increasing the hardness, reducing the internal stress of the casting as much as possible and increasing the anti-wear performance are undoubtedly very beneficial to prolonging the life of the casting and improving the efficiency of the casting. The research on the production process of chromium cast iron must

Method used

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  • Abrasion resistant and high-hardness high chromium cast iron and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A wear-resistant, high-hardness, high-chromium cast iron, containing the following components in weight percentage: C 2.68%, Cr 29.5%, Si 1.8%, Mn 0.4%, Mo 0.42%, Cu 0.8%, Ni 0.32%, V 0.15 %, Al 0.6%, Nb 0.3%, Bi0.1%, and the rest are iron and other unavoidable impurities.

[0027] The production process of the above-mentioned wear-resistant high-hardness high-chromium cast iron comprises the following steps:

[0028] (1) Add steel scrap, recarburizer, ferrochromium, ferronickel, ferromanganese, ferromolybdenum, ferrosilicon, ferromanganese, metal aluminum and niobium vanadium alloy into the hearth of the smelting furnace, heat up to 1450°C for melting, when the raw material After complete melting, raise the temperature to 1490°C, firstly add ferromanganese with 2.8% mass of molten iron for primary deoxidation, then add ferrosilicon with 2% mass of molten iron for secondary deoxidation, and finally add metal aluminum with 1.5% mass of molten iron for third deoxidation, ...

Embodiment 2

[0033] A wear-resistant, high-hardness, high-chromium cast iron, containing the following components in weight percentage: C 4.13%, Cr 34.5%, Si 2.1%, Mn 0.6%, Mo 0.66%, Cu 1.3%, Ni 0.43%, V 0.24 %, Al 1.1%, Nb 0.41%, Bi0.12%, and the rest are iron and other unavoidable impurities.

[0034] The production process of the above-mentioned wear-resistant high-hardness high-chromium cast iron comprises the following steps:

[0035] (1) Add steel scrap, recarburizer, ferrochromium, ferronickel, ferromanganese, ferromolybdenum, ferrosilicon, ferromanganese, metal aluminum and niobium vanadium alloy into the hearth of the smelting furnace, heat up to 1440°C for melting, when raw materials After complete melting, raise the temperature to 1480°C, firstly add ferromanganese with 2.8% mass of molten iron for primary deoxidation, then add ferrosilicon with 2% mass of molten iron for secondary deoxidation, and finally add metal aluminum with 1.5% mass of molten iron for third deoxidation, a...

Embodiment 3

[0040] A wear-resistant, high-hardness, high-chromium cast iron, containing the following components in weight percentage: C 2.52%, Cr 25.5%, Si 1.5%, Mn 0.2%, Mo 0.3%, Cu 0.8%, Ni 0.25%, V 0.13 %, Al 0.4%, Nb 0.28%, Bi0.08%, and the rest are iron and other unavoidable impurities.

[0041] The production process of the above-mentioned wear-resistant high-hardness high-chromium cast iron comprises the following steps:

[0042] (1) Add steel scrap, recarburizer, ferrochromium, ferronickel, ferromanganese, ferromolybdenum, ferrosilicon, ferromanganese, metal aluminum and niobium vanadium alloy into the hearth of the smelting furnace, heat up to 1460°C for melting, and use as raw material After complete melting, heat up to 1500°C, first add ferromanganese with 2.8% mass of molten iron for primary deoxidation, then add ferrosilicon with 2% mass of molten iron for secondary deoxidation, and finally add metal aluminum with 1.5% mass of molten iron for third deoxidation, end After de...

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Abstract

The invention provides a wear-resistant high-hardness high-chromium cast iron and a production process thereof, which relate to the field of metal casting and contain the following components in weight percentage: C 2.52-4.87%, Cr 25.5-35%, Si 1.5-2.5% , Mn 0.2‑0.8%, Mo 0.3‑0.8%, Cu 0.8‑1.5%, Ni 0.25‑0.48%, V 0.13‑0.28%, Al 0.4‑1.2%, Nb 0.28‑0.46%, Bi 0.08‑0.14%, and others For iron and other unavoidable impurities, the high-chromium cast iron can be obtained after the raw materials are melted, deoxidized three times, modified by a Re-Al-Bi-Mg compound modifier, inoculated with a rare earth inoculant, cast, quenched and tempered, The high chromium cast iron produced by the invention has the advantages of good wear resistance, high hardness, macroscopic hardness, high bending strength and impact toughness, and easy processing.

Description

technical field [0001] The invention relates to the field of metal casting, in particular to a wear-resistant high-hardness high-chromium cast iron and a production process thereof. Background technique [0002] High chromium cast iron is the abbreviation of high chromium white wear-resistant cast iron. It has much higher wear resistance than alloy steel, and much higher toughness and strength than ordinary white cast iron. At the same time, it also has good high temperature resistance and corrosion resistance, combined with convenient production and moderate cost. Known as one of the most excellent anti-abrasive wear materials in contemporary times. [0003] As far as the production process of high chromium cast iron is concerned, on the premise of increasing the hardness, reducing the internal stress of the casting as much as possible and increasing the anti-wear performance are undoubtedly very beneficial to prolonging the life of the casting and improving the efficiency...

Claims

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Application Information

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IPC IPC(8): C22C37/10C22C38/08C22C33/10C21D5/04C21D1/18
CPCC22C37/10C21D1/18C21D5/04C22C33/10C22C38/08
Inventor 卫正所
Owner 安徽巨泰机械制造有限公司
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