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Method of manufacturing stephanoporate metal honeycomb structure member

A honeycomb structure and porous metal technology, which is applied in the field of metal powder manufacturing powder metallurgy parts, can solve the problems of installation, clamping, cleaning and maintenance troubles, difficulty in adjusting the range of filtration accuracy, and difficulty in manufacturing, etc. The effect of high utilization

Inactive Publication Date: 2008-06-11
SHANGHAI RES INST OF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional porous honeycomb is made of ceramic clay, and its filtration accuracy range is difficult to adjust, especially when a larger filter pore size is required.
At the same time, the ceramic honeycomb is brittle and fragile, and installation, clamping, cleaning and maintenance are troublesome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for preparing a porous metal honeycomb structure. When the alloy powder used in the method is chromium-nickel or chromium-nickel-molybdenum stainless steel, the alloy powder prepared in a weight ratio of 80:20 and a water-based binder are placed in the Pre-mix in the mixer for 30 minutes, then knead on the mixer for 100-120 minutes to make a dough, put it into the extrusion die, and extrude under the extrusion force of <100MPa. Drying and vacuum sintering at a temperature of 1200-1350°C can make a porous metal honeycomb structure; the weight formula of the binder is 10% polyvinyl alcohol, 20% carboxymethyl cellulose, 4% glycerin, Ethanol 3%, water 63%.

Embodiment 2

[0017] A method for preparing a porous metal honeycomb structure. When the alloy powder used in the method is tin bronze, 6-6-3 bronze, or iron-copper, the alloy powder prepared in a weight ratio of 60:40 and water-based adhesive The binder is pre-mixed in the mixer for 30 minutes, and then kneaded on the mixer for 100-120 minutes to make a dough, put it into the extrusion die, and extrude under the extrusion force of <100MPa. Drying at a temperature of 750-850°C and sintering in a protective atmosphere of ammonia decomposition at a temperature of 750-850°C can make a porous metal honeycomb structure; the weight formula of the binder is 15% polyvinyl alcohol, carboxymethyl fiber Vegetable 15%, glycerin 6%, ethanol 0.5%, water 63.5%.

Embodiment 3

[0019] A method for preparing a porous metal honeycomb structure. When the alloy powder used in the method is an iron-chromium-aluminum heat-resistant alloy, the alloy powder prepared in a weight ratio of 90:10 and a water-based binder are mixed in a mixer Pre-mixed for 30 minutes, then kneaded on a mixer for 100-120 minutes to make a dough, put it into an extrusion die, and extrude it under an extrusion force of 2 (dew point-60 ℃) atmosphere sintering, can make porous metal honeycomb structure; The weight formula of described binding agent is polyvinyl alcohol 5%, carboxymethyl cellulose 25%, glycerin 1%, ethanol 5% %, water 64%.

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PUM

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Abstract

The invention relates to a process for preparing metal honeycomb structural components with multi holes. The process adopts a powder metallurgic method and comprises adding binding agent into metal powder or alloy powder, squeezing powder after mixing evenly, sintering pressed compacts in vacuum or protecting environment after drying and removing the binding agent, and thereby the metal honeycomb structural components with multi holes can be prepared. Compared with the prior art, the invention is characterized in that procedures are simple, material utilizing rate is high, technological processes are short, cost is low, mass productions are easy and the like.

Description

technical field [0001] The invention relates to the field of methods for manufacturing powder metallurgy parts using metal powders. It is mainly suitable for the manufacture of porous metal honeycomb structural parts of chromium-nickel, chromium-nickel-molybdenum stainless steel; tin bronze; 6-6-3 bronze; iron-chromium-aluminum heat-resistant alloy; iron-copper and other materials. It is especially suitable for the manufacture of porous metal honeycomb structural parts for sewage treatment, dust collection, exhaust gas purification, casting mold exhaust, etc. Background technique [0002] The current metal honeycomb manufacturing is to use metal foil or wire made by melting and rolling, and use the method of rolling foil or winding ribbon to make a structure similar to honeycomb. After welding layer by layer cross nodes, it is fixed and then put into a metal sleeve. In-pipe process method. The method has complex process, many procedures, expensive equipment and high produc...

Claims

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Application Information

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IPC IPC(8): B22F3/16C22C1/04C22C1/08
Inventor 仲守亮张德明丁达荣
Owner SHANGHAI RES INST OF MATERIAL
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