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Alloy steel and method for manufacturing same

An alloy steel and a manufacturing method technology, applied in the field of metallurgy, can solve the problems of affecting the properties of the alloy, chromium is easily oxidized, etc., and achieve the effects of light alloy weight, low cost, and good alloy performance.

Inactive Publication Date: 2013-02-20
王恒傲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of nickel, molybdenum and other elements is usually high, and chromium as an alloying element can make the alloy obtain high performance at a low price, but chromium is easily oxidized, which will affect the performance of the alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An alloy steel, including by mass: 10 parts of iron powder and alloy powder. The particle size of the iron powder is 25 μm.

[0015] The alloy powder includes 10 parts of electrolytic copper powder, 2 parts of graphite powder, 2 parts of paraffin wax lubricant, 4 parts of chromium powder, 1 part of nickel powder, 2 parts of molybdenum powder, 2 parts of zirconium powder and 2 parts of aluminum powder in terms of mass , the particle size of the above-mentioned powders is 100 μm.

[0016] The manufacture method of described alloy steel:

[0017] Step 1: mix the 10 parts of iron powder and alloy powder evenly.

[0018] The second step: the mixed powder in the previous step is pressed in a mold at 200MPa and sintered at 100°C.

[0019] Step 3: Temper in air at 100°C for 1h.

Embodiment 2

[0021] An alloy steel comprising, by mass: 20 parts of iron powder and alloy powder. The particle size of the iron powder is 30 μm.

[0022] The alloy powder includes 20 parts of electrolytic copper powder, 8 parts of graphite powder, 7 parts of paraffin wax lubricant, 6 parts of chromium powder, 2 parts of nickel powder, 6 parts of molybdenum powder, 9 parts of zirconium powder and 3 parts of aluminum powder in terms of mass , the particle size of the above-mentioned powders is 200 μm.

[0023] The manufacture method of described alloy steel:

[0024] Step 1: Mix the 20 parts of iron powder and alloy powder evenly.

[0025] The second step: the mixed powder in the previous step is pressed in a mold at 600MPa and sintered at 200°C.

[0026] Step 3: Temper in air at 150°C for 3h.

Embodiment 3

[0028] An alloy steel, including by mass: 15 parts of iron powder and alloy powder. The particle size of the iron powder is 35 μm.

[0029] The alloy powder includes 15 parts of electrolytic copper powder, 6 parts of graphite powder, 5 parts of paraffin wax lubricant, 5 parts of chromium powder, 1.5 parts of nickel powder, 4 parts of molybdenum powder, 5 parts of zirconium powder and 2.5 parts of aluminum powder in terms of mass , the particle size of the above-mentioned powders are all 150 μm.

[0030] The manufacture method of described alloy steel:

[0031] Step 1: Mix the 15 parts of iron powder and alloy powder evenly.

[0032] The second step: the mixed powder in the previous step is pressed in the mold at 300MPa, and sintered at 150°C.

[0033] Step 3: Temper in air at 125°C for 2 hours.

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Abstract

Disclosed are alloy steel and a method for manufacturing the same. The alloy steel comprises, by mass, from 10 to 20 parts of iron powder and alloy powder. The particle size of the iron powder is smaller than 50 micrometers. The alloy powder comprises, by mass, from 10 to 20 parts of electrolytic copper powder, from 2 to 8 parts of graphite powder, from 2 to 7 parts of paraffin lubricants, from 4 to 6 parts of chromium powder, from 1 to 2 parts of nickel powder, from 2 to 6 parts of molybdenum powder, from 2 to 9 parts of zirconium powder and from 2 to 3 parts of aluminum powder, and particle sizes of the electrolytic copper powder, the graphite powder, the chromium powder, the nickel powder, the molybdenum powder, the zirconium powder and the aluminum powder range from 100 micrometers to 200 micrometers. The method for manufacturing the alloy steel includes steps of firstly, uniformly mixing from 10 to 20 parts of the iron powder and the alloy powder; secondly, pressing mixed powder obtained in the first step in a mold at the pressure ranging from 200MPa to 600MPa and sintering the mixed powder at the temperature ranging from 100 DEG C to 200 DEG C; and thirdly, tempering a product obtained in the second step in air at the temperature ranging from 100 DEG C to 150 DEG C for 1 to 3 hours. The alloy steel is low in production cost, high in strength, and good in alloy performance. Besides, chromium elements replace partial nickel, and accordingly the alloy steel is light.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, in particular to an alloy steel and a preparation method thereof. Background technique [0002] With the development of industries such as automobiles, machinery, and electronic appliances, alloy steel materials have also been more and more widely used. However, the price of nickel, molybdenum and other elements is usually high, and chromium as an alloying element can make the alloy obtain high performance at a low price, but chromium is easily oxidized, which will affect the performance of the alloy. Contents of the invention [0003] One object of the present invention is to provide a formulation of alloy steel, and another object of the present invention is to provide a preparation method of said alloy steel. [0004] The technical solutions adopted are: [0005] An alloy steel comprising, by mass: 10-20 parts of iron powder and alloy powder. The particle size of the iron powder is les...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/56C22C38/50C22C33/02
Inventor 王恒傲
Owner 王恒傲