Multielement high-nickel chromium wear-resistant cast iron and its prepn process

A wear-resistant cast iron, high nickel-chromium technology, applied in the field of multi-element high-nickel-chromium alloy wear-resistant cast iron and its preparation technology, can solve the problems of low service life, poor wear resistance, easy breakage, etc., to reduce replacement frequency, improve The effect of the service life

Inactive Publication Date: 2005-12-14
宝钢集团上海梅山有限公司
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AI Technical Summary

Problems solved by technology

Ordinary wear-resistant cast steel has better impact resistance, but its wear-resistant performance is worse than wear-resistant cast iron; ordinary alloy wear-resistant cast iron has poor impact resistance and is easy to break during u

Method used

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Experimental program
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Embodiment Construction

[0010] Yuan

[0011] The modifier is prepared from rare earth, vanadium and titanium in a weight ratio of 1:1:1.

[0012] The smelting and pouring process is as follows: smelting in an induction furnace, converting the ferroalloy, scrap steel, and pig iron into weight according to the chemical composition ratio, and then co-melting to obtain molten iron with chemical composition that meets the requirements. The pouring mold is sand mold, and the pouring temperature is controlled. At 1500°C, the metamorphic treatment adopts the punching bag method, pouring the molded castings, and then performing heat treatment after air cooling. The heat treatment process is to heat to 980°C and keep warm for 2 hours in air cooling.

[0013] The metallographic structure of the obtained multi-component high-nickel-chromium alloy wear-resistant cast iron material is chrysanthemum eutectic carbide + secondary carbide + austenite.

[0014]

[0015] The obtained multi-component...

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PUM

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Abstract

The present invention is multielement high-Ni-Cr wear resistant alloy cast iron and its preparation process. The multielement high-Ni-Cr wear resistant cast iron consists of: C 1.2-3.2 wt%, Cr 12-27 wt%, Mn 0.5-1.5 wt%, Si 0.3-1.5 wt%, Mo 0.2-2.2 wt%, Ni 0.2-2.0 wt%, Cu 0.5-1.2 wt%, S not more than 0.07 wt%, P not more than 0.07 wt% and modifier 0.2-0.5 wt%, except Fe. By means of altering the components of the alloy cast iron, wear resistant alloy cast iron with high antioxidant performance and high wear resisting performance and different operation temperature range, -20 to +300 deg.c, 300 to 700 deg.c, 700 to 900 deg.c, etc may be produced for different uses. Compared with common alloy cast iron, the multielement high-Ni-Cr wear resistant alloy cast iron may produce parts with 1.5-3.5 times longer service life.

Description

1. Technical field [0001] The invention relates to a wear-resistant cast iron and a preparation process thereof, in particular to a multi-component high-nickel-chromium alloy wear-resistant cast iron and a preparation process thereof. 2. Background technology [0002] The existing wear-resistant metal materials used in metallurgy, mining, construction and other industries are mainly ordinary wear-resistant cast steel and ordinary alloy wear-resistant cast iron. Ordinary wear-resistant cast steel has better impact resistance, but its wear resistance is worse than that of wear-resistant cast iron; ordinary alloy wear-resistant cast iron has poor impact resistance and is easy to break during use. Both of these two wear-resistant materials have certain wear resistance at room temperature, but under medium and high temperature conditions, due to the dual effects of oxidation and wear, the service life of the materials is very low. 3. Contents of the invention [0003] The tech...

Claims

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Application Information

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IPC IPC(8): C22C37/08
Inventor 胡恒法裴新华潘留俊穆海玲
Owner 宝钢集团上海梅山有限公司
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