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Malleable wear-resistant alloy cast iron

A wear-resistant alloy and cast iron technology, applied in the field of alloy cast iron, can solve the problems of unsuitable forging processing, poor forging processing performance of gray iron castings, difficult to achieve wear resistance, etc., so as to achieve improved wear resistance and good forging processing performance. Effect

Inactive Publication Date: 2011-09-21
广东扬山联合精密制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when gray cast iron is used to make components that require high wear resistance, it is difficult to meet the wear resistance requirements
Moreover, due to the poor forging performance of gray iron castings, it is not suitable for forging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The malleable wear-resistant alloy cast iron described in this embodiment comprises by weight: 2.4% carbon, 1.5% silicon, 0.4% manganese, 0.2% sulfur, 0.1% phosphorus, 0.05% vanadium, 0.04% Boron, balance iron and impurities.

Embodiment 2

[0015] The malleable wear-resistant alloy cast iron described in this embodiment comprises by weight: 2.8% carbon, 1.1% silicon, 0.6% manganese, 0.15% sulfur, 0.8% phosphorus, 0.2% vanadium, 0.05% Boron, balance iron and impurities.

Embodiment 3

[0017] The malleable wear-resistant alloy cast iron described in this embodiment comprises by weight: 2.6% carbon, 1.3% silicon, 0.5% manganese, 0.15% sulfur, 0.9% phosphorus, 0.1% vanadium, 0.06% Boron, balance iron and impurities.

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PUM

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Abstract

The invention discloses malleable wear-resistant alloy cast iron. The malleable wear-resistant alloy cast iron comprises the following components by weight percent: 2.4-2.8% of carbon, 1.1-1.5% of silicon, 0.4-0.6% of manganese, 0.15-0.2% of sulfur, 0.8-0.1% of phosphorus, 0.05-0.2% of vanadium, 0.04-0.07% boron and the balance of iron and impurities. The malleable wear-resistant alloy cast iron has both forging machinability and wear resistance. Different amounts of boron-containing cementite or ledeburite in the metallographic structure is formed in the cast iron, wherein the micro-hardness of the boron-containing cementite is HV960-1280. The malleable wear-resistant alloy cast iron has a special wear-resistant structure, thus the wear resistance is extremely increased. In addition, after the cast iron is annealed, the forging machinability becomes good.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and specifically refers to an alloy cast iron. Background technique [0002] Alloy cast iron is obtained by adding appropriate amount of alloying elements (such as silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, aluminum, boron, vanadium, tin, etc.) to ordinary cast iron. Alloying elements change the matrix structure of cast iron, so that it has corresponding properties such as heat resistance, wear resistance, corrosion resistance, low temperature resistance or non-magnetic properties. Among them, gray cast iron in alloy cast iron is the most widely used cast iron in the industry due to its low cost, castability and machinability, such as widely used in the manufacture of parts such as engines and home appliances. The composition of the existing gray cast iron is determined by the performance requirements of the parts it manufactures, such as tensile strength, wear perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/10
Inventor 何桂景
Owner 广东扬山联合精密制造股份有限公司