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Iron-based powder metallurgical material and preparation method thereof

An iron-based powder metallurgy and raw material technology, applied in the field of metallurgy, can solve the problems of easy fracture and high surface hardness, and achieve the effects of improving toughness, improving bonding strength, and enhancing sintering stability

Inactive Publication Date: 2018-09-21
张庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear amount obtained on the MM-1000 friction and wear testing machine is between 0.006-0.0094, but its surface hardness is relatively high and it is easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An iron-based powder metallurgy material, which is composed of the following raw materials in weight percentage:

[0018] Aluminum isopropoxide 10%, dithiosalicylic acid 1%, didecyldimethyl ammonium bromide 2%, hydroxyethyl cellulose 1%, fatty acid polyethylene glycol ester 0.1%, lead powder 2-4 %, Cr10%, nickel powder 1%, triethanolamine 0.4%, zinc powder 2%, calcium phosphate 1%, and the rest is iron.

[0019] A method for preparing an iron-based powder metallurgy material, comprising the following steps:

[0020] (1) Take hydroxyethyl cellulose, add it to dimethylformamide which is 7 times its weight, stir evenly, increase the temperature to 50°C, keep stirring for 10 minutes, add fatty acid polyethylene glycol ester, and stir to room temperature , to obtain fiber dispersion;

[0021] (2) Mix didecyldimethylammonium bromide and aluminum isopropoxide, add it to deionized water 13 times the weight of the mixture, stir and react for 3 hours to obtain a sol dispersion;...

Embodiment 2

[0027] An iron-based powder metallurgy material, which is composed of the following raw materials in weight percentage:

[0028] Aluminum isopropoxide 14%, dithiosalicylic acid 2%, didecyldimethyl ammonium bromide 4%, hydroxyethyl cellulose 4%, fatty acid polyethylene glycol ester 0.4%, lead powder 2-4 %, Cr11%, nickel powder 2%, triethanolamine 1%, zinc powder 3%, calcium phosphate 2%, and the rest is iron.

[0029] A method for preparing an iron-based powder metallurgy material, comprising the following steps:

[0030] (1) Take hydroxyethyl cellulose, add it to dimethylformamide that is 10 times its weight, stir evenly, raise the temperature to 60°C, keep stirring for 20 minutes, add fatty acid polyethylene glycol ester, and stir to room temperature , to obtain fiber dispersion;

[0031] (2) Mix didecyldimethylammonium bromide and aluminum isopropoxide, add it to deionized water 13 times the weight of the mixture, stir and react for 4 hours to obtain a sol dispersion;

[...

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PUM

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Abstract

The invention discloses an iron-based powder metallurgical material. The iron-based powder metallurgical material is prepared from the following raw materials in percentage by weight: 10-14% of aluminum isopropoxide, 1-2% of dithio-salicylic acid, 2-4% of bidecyl dimethyl ammonium bromide, 1-4% of hydroxyethyl cellulose, 0.1-0.4% of fatty acid polyethylene glycol ester, 2-4% of lead powder, 10-11%of Cr, 1-2% of nickel powder, 0.4-1% of triethanolamine, 2-3% of zinc powder, 1-2% of calcium phosphate and the balance of iron. According to the iron-based powder metallurgical material disclosed bythe invention, hydroxyethyl cellulose is taken as the raw material and is dispersed into dimethyl formamide, and aluminum isopropoxide is taken as a precursor and is hydrolyzed to obtain fiber sol which can effectively improve bonding strength of the raw materials, strengthens sintering stability, and can improve toughness.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to an iron-based powder metallurgy material and a preparation method thereof. Background technique [0002] The existing domestic iron-based powder metallurgy friction material CN200710106016.0 is mainly used in the braking of aircraft, engineering vehicles and artillery with medium and high speed and medium specific pressure. CN200720153895.8 is mainly used in a certain type of crawler excavator clutch, and the invention is a structure and production process of a friction plate, which does not include the iron-based powder metallurgy friction material formula and its preparation process. Patent CN200710160660.6 discloses a composition and friction material for preparing iron-based powder metallurgy friction, the main components of which are iron, copper, manganese, silicon carbide, silicon dioxide, aluminum oxide, boron carbide, sulfurous acid Iron and graphite, characterized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/08C22C47/14C22C101/00C22C121/00
Inventor 不公告发明人
Owner 张庆
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