Alloy steel

A technology of alloy steel and finished products, applied in the field of alloy steel, can solve the problems of short service life, increased production cost, limited wear resistance, etc., and achieve the effects of low production cost, improved plasticity and good wear resistance

Inactive Publication Date: 2005-11-09
陈章华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary chromium molybdenum steel has limited wear resistance and short service life, resulting in increased production costs
High chromium cast iron has good wear resistance, but high cost and poor toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of alloy steel, the chemical composition of its finished product includes carbon, silicon, manganese, chromium, molybdenum, nickel, aluminum, sulfur, phosphorus, and the weight percentage of its composition is: carbon 0.33%, silicon 0.3%, manganese 0.6%, Chromium 4.0%, molybdenum 0.1%, nickel 0.1%, aluminum 0.08%, sulfur ≤ 0.03%, phosphorus ≤ 0.035%, the balance is iron and residues.

[0028] The present invention is realized by following production method:

[0029] (1) Weighing and preparing materials

[0030] ① Scrap iron, scrap steel or A3 steel or low carbon steel.

[0031] (2) Melting

[0032] a. Furnace bottom charging. Add 13kg of slaked lime per ton of charge, and high-carbon ferromanganese with a carbon content of less than 6.9% and a maximum phosphorus content of 0.1%. The amount of high-carbon ferromanganese depends on the type of waste material or recycled material. 5kg-10kg;

[0033] b. Add steel scrap or return material;

[0034] c. When the r...

Embodiment 2

[0043] Alloy steel, the chemical composition of its finished product includes carbon, silicon, manganese, chromium, molybdenum, nickel, aluminum, sulfur, phosphorus, and the weight percentage of its composition is: carbon 0.42%, silicon 0.9%, manganese 1.2%, chromium 5.6 %, molybdenum 0.1%-0.6%, nickel 0.6%, aluminum 0.2%, sulfur ≤ 0.03%, phosphorus ≤ 0.035%, and the balance is iron and residues.

[0044] The present invention is realized by following production method:

[0045] (1) Weighing and preparing materials

[0046] Scrap iron, scrap steel or A 3 steel or mild steel.

[0047] (2) Melting

[0048] a. Furnace bottom charging. Add 13kg of hydrated lime per ton of charge, and high-carbon ferromanganese with a carbon content of less than 6.9% and a maximum phosphorus content of 0.1%. 5kg-10kg;

[0049] b. Add steel scrap or return material;

[0050] c. When the returned materials are all melted and in a molten state, take samples for analysis;

[0051] d. When the e...

Embodiment 3

[0059] Alloy steel, the chemical composition of its finished product includes carbon, silicon, manganese, chromium, molybdenum, nickel, aluminum, sulfur, phosphorus, and the weight percentage of its composition is: carbon 0.375%, silicon 0.6%, manganese 0.9%, chromium 5.1 %, molybdenum 0.35%, nickel 0.35%, aluminum 0.14%, sulfur ≤ 0.03%, phosphorus ≤ 0.035%, and the balance is iron and residues.

[0060] The present invention is realized by following production method:

[0061] (1) Weighing and preparing materials

[0062] Ferroalloy: ferromanganese containing more than 80% manganese and less than 0.08% carbon or ferrosilicon containing more than 75% silicon or ferrochrome containing more than 60% chromium and less than 0.25% carbon;

[0063] (2) Melting

[0064] a. Furnace bottom charging. Add 13kg of slaked lime per ton of charge, and high-carbon ferromanganese with a carbon content of less than 6.9% and a maximum phosphorus content of 0.1%. The amount of high-carbon ferr...

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PUM

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Abstract

An alloy steel with high toughness and antiwear performance for the rolling roller, impacting hammer, etc contains C (0.33-0.42 wt.%), Si (0.3-0.9), Mn (0.6-1.2), CR (4-5.6) and Fe (rest).

Description

technical field [0001] The invention relates to an alloy steel which can be widely used in metallurgy and iron and steel industries such as rolls, blow bars in mines and cement industries and other mechanical materials, especially relates to a kind of scrap steel as the main raw material, adding appropriate alloys, improving the crystal structure, Wear-resistant alloy steel. Background technique [0002] In the prior art, the wear materials widely used in metallurgy, iron and steel industry, mining, cement industry, pulverizer and other mechanical parts are mostly ordinary chromium-molybdenum steel, vanadium steel or high-chromium cast iron, such as rolls in metallurgy and iron and steel industries , The blow bar in the mine and cement industry, the hammer body on the pulverizer and other main parts of the machine are the same. However, ordinary chrome-molybdenum steel has limited wear resistance and short service life, resulting in increased production costs. High chromiu...

Claims

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Application Information

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IPC IPC(8): C22C38/18
Inventor 陈章华
Owner 陈章华
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