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Preparation method of porous metal foil

A porous metal, metal porous technology, applied in other manufacturing equipment/tools, mechanical equipment, turbines, etc., can solve problems such as limited use range

Active Publication Date: 2017-10-27
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned tube-type or plate-type sintered metal porous material filter elements are limited in scope of use due to their shape, structure and accompanying requirements for filter devices and systems.

Method used

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  • Preparation method of porous metal foil

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Experimental program
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preparation example Construction

[0050] The steps of a preparation method (method 1) of the above-mentioned flexible porous metal foil 100 include: (1) configuring the raw material powder constituting its metal porous material into a viscous suspension with a dispersant and a binding agent; (2) ) inject the suspension into the molding cavity of the film-making tooling and make it dry to form a homogeneous membrane; (3) put the membrane into the sintering tooling that conforms to the shape of the membrane and then Constrained sintering is carried out, and the flexible porous metal foil 100 is obtained after sintering and taken out from the sintering tool.

[0051] In the above method, the dispersant can use ethanol, methyl ethyl ketone, toluene and other organic solvents with low surface tension and quick volatilization and easy drying; the binding agent can use PVB, PVA, PVC, polyvinyl alcohol, polyethylene glycol (low molecular wax) ), paraffin, fatty acids, aliphatic amides and esters, etc.

[0052] In the...

Embodiment 1

[0068]The flexible porous metal foil 100 is a rectangular sheet made of Ni-Cu solid solution alloy porous material. The sheet has a thickness H of 10 μm, a length of 160 mm, a width of 125 mm, an average pore diameter of 18.4 μm, and a porosity of 58.37%. The preparation method of the flexible porous metal foil 100 is as follows: First, uniformly mix Ni powder and Cu powder to form raw material powder, wherein the mass of Cu powder is 30% of the mass of the raw material powder, and then use ethanol as a dispersant and PVB as a binder , the mass ratio of PVB and ethanol is 2.5:100 ratio that PVB is added in the ethanol to make PVB solution, after this adds raw material powder in the PVB solution by the ratio of adding raw material powder 25g in every 100ml ethanol, makes raw material powder by stirring Fully disperse evenly to obtain a viscous suspension; secondly, inject the suspension into such as Figure 2~3 In the molding cavity of the shown film-making tooling and make it ...

Embodiment 2

[0070] The flexible porous metal foil 100 is a rectangular sheet made of Ni-Cu solid solution alloy porous material. The sheet has a thickness H of 100 μm, a length of 200 mm, a width of 130 mm, an average pore diameter of 30 μm, and a porosity of 61.68%. The preparation method of the flexible porous metal foil 100 is as follows: First, uniformly mix Ni powder and Cu powder to form raw material powder, wherein the mass of Cu powder is 60% of the mass of the raw material powder, and then use ethanol as a dispersant and PVB as a binder , the mass ratio of PVB and ethanol is the ratio of 4:100 that PVB is added in the ethanol to make PVB solution, then adds raw material powder in the PVB solution by the ratio of adding raw material powder 40g in every 100ml ethanol, makes raw material powder by stirring Fully disperse evenly to obtain a viscous suspension; secondly, inject the suspension into such as Figure 2~3 In the molding cavity of the shown film-making tooling and make it d...

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Abstract

The invention discloses a method for preparing a porous metal foil. The porous metal foil is a thin sheet made of a metal porous material. The steps include: (1) configuring the raw material powder constituting the metal porous material into a viscous suspension; (2) inject the suspension into the molding cavity of the film-making tooling and make it dry to form a homogeneous diaphragm; (3) compress the diaphragm to increase the Packing density of powder particles; (4) Sintering the pressed membrane to obtain a porous metal foil. Since the pressing step increases the packing density of the powder particles in the membrane, the average pore size of the flexible porous metal foil can be made smaller and more uniform; the average pore size of the flexible porous metal foil can be controlled by selecting the pressing pressure.

Description

[0001] The applicant of the present invention submitted an invention patent application with the application number 2014106089803 and the name "flexible porous metal foil and its preparation method" on October 31, 2014. The flexible porous metal foil and its preparation method provided in the specification of the prior application may be technically related to the present application. Since this prior application has not been published on the filing date of this application, the following content of this specification mostly refers to the content of this prior application, so that the public can more comprehensively and clearly understand this flexible document when reading this application document. Porous metal foil and its preparation technology. technical field [0002] The invention relates to a sintered metal porous material and its preparation, in particular to a flexible porous metal foil and a preparation method of the flexible porous metal foil. Background techniqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/22B22F5/00
Inventor 高麟汪涛王韬
Owner CHENGDU INTERMENT TECH