Jet electroform method and equipment for manufacturing foamed metal

A foam metal and manufacturing method technology, applied in electroforming, electrolysis process and other directions, can solve the problems of difficult control of pore size, complicated process, low porosity of pores and pores, etc., and achieve a large pore size range, uniform thickness, and improve limiting current density. Effect

Inactive Publication Date: 2007-12-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the existing metal foam manufacturing methods all need to rely on auxiliary medium materials, resulting in complex processes, low porosity between holes, and difficult control of pore diameters, and to invent a method that directly utilizes spray electric Method and device for manufacturing metal foam based on deposition principle

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  • Jet electroform method and equipment for manufacturing foamed metal

Examples

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Effect test

Embodiment 1

[0040] Stainless steel (1Cr18Ni9Ti) is selected as the cathode plate, and the surface of the plate is sequentially polished, degreased, passivated, washed with water, and dried, and then uniformly deposited on the surface to the expected thickness by spray electrodeposition process.

[0041] Electroforming solution preparation formula (take the preparation of 1000 grams of electroforming solution as an example):

[0042] 250 grams of copper sulfate, 50 grams of sulfuric acid, 1 gram of saccharin (brightener), and the balance of 699 grams is deionized distilled water.

[0043] Metal electrodeposition forming process:

[0044] The shape of the nozzle is long strip, the specification is 1×20mm (depending on the specific situation), the injection speed of the electroforming solution is v=7.5m / s, and the cathode current density is J=250A / dm 2 . During the deposition process, the pH value of the electroforming solution is controlled to be 4, the temperature of the electroforming s...

Embodiment 2

[0048] Stainless steel (1Cr18Ni9Ti) is selected as the cathode plate, and the surface of the plate is sequentially polished, degreased, passivated, washed with water, and dried, and then uniformly deposited on the surface to the expected thickness by spray electrodeposition process.

[0049] Electroforming solution preparation formula (take the preparation of 1000 grams of electroforming solution as an example):

[0050] 250 grams of copper sulfate, 55 grams of sulfuric acid, 1 gram of saccharin (brightener), 0.05 grams of sodium lauryl sulfate (wetting agent), and the balance is 693.95 grams of deionized distilled water.

[0051] Metal electrodeposition forming process:

[0052] The shape of the nozzle is long strip, the specification is 1×20mm (depending on the specific situation), the injection speed of the electroforming solution is v=1.5m / s, and the cathode current density is J=200A / dm 2 . During the deposition process, the pH value of the electroforming solution is con...

Embodiment 3

[0056] Stainless steel (1Cr18Ni9Ti) is selected as the cathode plate, and the surface of the plate is sequentially polished, degreased, passivated, washed with water, and dried, and then uniformly deposited on the surface to the expected thickness by spray electrodeposition process.

[0057] Electroforming solution preparation formula (take the preparation of 1000 grams of electroforming solution as an example):

[0058] 250 grams of copper sulfate, 60 grams of sulfuric acid, 10 grams of thiourea (brightener), NH 4 Cl (buffering agent) 40 grams, sodium lauryl sulfate (wetting agent) 0.2 grams, the balance is 639.8 grams of deionized distilled water.

[0059] Metal electrodeposition forming process:

[0060] The shape of the nozzle is long, the specification is 1×20mm (depending on the specific situation), the injection speed of the electroforming solution is v=7.5m / s, and the cathode current density is J=750A / dm 2 . During the deposition process, the pH value of the electro...

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Abstract

This invention discloses method and apparatus for producing electroplated foam metal by spraying. The method comprises: placing surface-treated cathode plate into an electroforming tank, controlling the temperature of the electroforming solution at 20-65 deg.C, spraying via the spray nozzle connected with the central chamber of the anode bar to the cathode plate at a rate of 1.5-7.5 m / s to obtain a branch-like or sponge-like metal deposition layer, controlling the current density at 200-750 A / dm2, controlling the movement of the spray nozzle along the vertical direction, the horizontal lateral direction and horizontal longitudinal direction to form a porous foam metal deposition layer with required thickness and shape, and drying the foam metal deposition layer. The method has such advantages as no need for auxiliary medium, simple process and convenient production.

Description

technical field [0001] The invention relates to a metal foam manufacturing method and equipment, in particular to a metal foam manufacturing method and equipment without adding any auxiliary medium, in particular to a metal foam spray electroforming manufacturing method and its device. Background technique [0002] As we all know, metal foam is a new type of engineering material, which has a three-dimensional network structure, high porosity (40-98%, vol), and large specific surface area. Generally speaking, metal foam materials have the following characteristics: light weight, common Good permeability, strong energy absorption, low thermal conductivity, good electromagnetic shielding. The existing more than a dozen metal foam preparation methods can be roughly divided into the following four categories: liquid phase method, solid phase method, gas phase method, and electrodeposition method. The basic idea of ​​the liquid phase method is to form a porous metal material by b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/08
Inventor 黄因慧田宗军陈劲松沈理达刘志东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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