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Jet electroform method and equipment for manufacturing foamed metal

A foam metal and manufacturing method technology, applied in the direction of electroforming, electrolysis, etc., can solve the problems of difficult control of pore diameter, low porosity of pores and pores, complicated process, etc., achieve a large range of pore diameters, increase the limit current density, and thickness uniform effect

Inactive Publication Date: 2009-08-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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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
  • Jet electroform method and equipment for manufacturing foamed metal

Examples

Experimental program
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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

A metal foam jet electroforming manufacturing method and device thereof, belonging to the technical field of metal material manufacturing, is characterized in that first, the surface-treated cathode plate is placed in an electroforming tank; secondly, the temperature of the electroforming solution is controlled at 20-20 Between 65°C (depending on different situations), and spray it to the cathode plate at a speed of 1.5-7.5m / s through the nozzle connected to the central cavity of the anode rod, and obtain dendrites or sponges on the surface of the cathode plate Shaped metal deposition layer, control the current density at 200-750A / dm2, and control the movement of the nozzle in the vertical direction, horizontal horizontal direction and horizontal longitudinal direction at the same time, so as to form a porous metal foam with the required thickness and shape on the surface of the cathode plate. deposition layer; finally, the obtained metal foam deposition layer can be dried. The invention solves the problem that the existing foam metal manufacturing needs to be realized through an auxiliary medium, and has the advantages of simple method and convenient manufacture.

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 Patents(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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