A powder pre-layered composite electroforming device

A layered, powder technology, applied in electroforming, electrolysis process, etc., can solve problems such as low efficiency, and achieve the effect of simple process, low preparation cost and dense crystal structure

Active Publication Date: 2018-04-17
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of low efficiency of traditional electroforming technology, the comprehensive composite electroforming technology of the present invention proposes a powder pre-layered composite electroforming device, which can be used for rapid deposition of Cu, Ni, Zn, Cr, Sn, Ag and other metals It can also be used for the rapid deposition of composite materials using these metals and alloys as the matrix

Method used

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  • A powder pre-layered composite electroforming device
  • A powder pre-layered composite electroforming device
  • A powder pre-layered composite electroforming device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The specific steps of using the device of the invention to prepare metal and alloy materials include pretreatment of metal powder, preparation of electrolyte, initial treatment of cathode plate, pre-laying of powder, and electrodeposition forming.

[0032] (1) Pretreatment of metal powder. ①In order to increase the compaction density of the powder, a wider powder particle size range (2μm~50μm) is used, powder particles of different particle sizes are used, and small particle powder is used to fill the gaps between large particles, so as to improve the bulk density and compaction of the powder. Solid density, reduce the amount of metal deposition during electroforming, and increase the forming rate of electroforming; ② In order to improve the surface activity of the powder, the powder is ball milled, and the ball mill is wet milled for 2 hours with ethanol as the ball milling medium; ③ Wetting treatment and removal The method of surface oil pollution is to soak the metal...

Embodiment 2

[0038] In this example:

[0039] The cathode base material is copper sheet, the size is 50mm×50mm×2mm;

[0040] The anode material is a nickel plate with a purity of more than 99.9%, and the shape is 50mm×50mm×5mm. The cathode and anode are parallel and opposed to each other immersed in the electrolyte, and the distance between the cathode and the anode is between 50mm;

[0041] The anode nickel is flat, the cathode copper sheet is also flat, the cathode and anode are kept parallel, and the pre-coated nickel powder is also kept parallel, parallel to the surface of the cathode and anode, and the layers ensure that the electrodeposition rate of the cathode surface is equal, and the deposited layer Uniform thickening;

[0042] The electroforming system uses electric heating tubes for heating, and the temperature control system realizes that the temperature can be adjusted between room temperature and 80°C, and the temperature adjustment accuracy is 0.5°C;

[0043] In this example...

Embodiment 3

[0051] The power supply of the present invention can adopt a pulse power supply to carry out plasma electroforming; the push rod of the powder spreading wheel shaft of the powder spreading device of the present invention and the side wall of the deposition chamber adopt clearance fit, the side wall of the material storage chamber, and the side wall of the deposition chamber Made of glass, the push plate of the powder lifting device of the storage chamber and the cathode lifting device of the deposition chamber are made of heat-resistant plexiglass, the push plate of the powder lifting device of the storage chamber and the side wall of the storage chamber adopt clearance fit, The push plate of the lifting device and the side wall of the deposition chamber adopt a gap fit to prevent the electrolyte from flowing out; The gap fit is used between the holes; the heat-resistant plexiglass material is used to meet the characteristics of high voltage, corrosion of electrolyte and high t...

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Abstract

The invention discloses a powder pre-paving type fast electrodepositing preparation device for metal and alloy and application of the device. Before deposition, powder in a material storage cavity is ejected through a feeding cavity lifting mechanism; a deposition layer is descended to 0.5-2.0 mm of the upper surface of a deposition cavity through a lifting mechanism of the deposition cavity; a feeding shaft wheel drives the metal powder to enter the deposition cavity; and the upper surface of the deposition cavity is uniformly paved with the powder. During electrodepositing, the deposited metal and the pre-paved metal powder are consistent in component, the gaps between pre-paved metal powder particles are filled with the deposited metal, powder paving is conducted again through a powder feeding device after the gaps between the pre-paved metal powder are filled with the deposited metal, and circulating is conducted in this way till electroforming is completed. Due to the fact that the metal powder is pre-paved, the metal deposition amount is decreased; and the relative density of the compacted multi-granularity mixed metal powder can reach 70% or above, therefore, the thickening rate of the metal deposition layer can be increased to 3 times or above, and the deposition layer is compact and uniform.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and in particular relates to a powder pre-layered electrodeposition device and a new method for rapidly preparing nickel and nickel alloys by using the pre-layered electrodeposition device. Background technique [0002] Electroforming technology has the characteristics of good replication performance, low processing cost, and relatively simple processing equipment, and has been widely used in the preparation of nickel and nickel alloys. Composite electroforming is a method of depositing solid particles or fibers into the electroformed layer by adding them to the electrolyte. Regarding composite electroforming, CN201410639432 discloses a corrosion-resistant and wear-resistant metal surface coating and its preparation method, adding silver powder and straw powder to the electrolyte to obtain a composite surface coating; CN201410450868 discloses a carbon nanotube-copper-based compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/00
CPCC25D1/00
Inventor 贺毅强李俊杰杨建明冯立超陈劲松
Owner HUAIHAI INST OF TECH
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