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

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...

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 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 material is very low