Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof

A tool electrode and composite material technology, which is applied in the direction of electrode manufacturing, electric processing equipment, manufacturing tools, etc., can solve the problems of the processed workpiece’s molding quality to be improved and poor electrical corrosion resistance, so as to increase wettability and improve electrical resistance. Corrosion, the effect of electrode material densification

Active Publication Date: 2014-06-25
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these studies are still in the preliminary stage. Although the tool electrodes produced have been improved and some progress has been made, they are still poor in electrical corrosion resistance, and the molding quality of the processed workpiece still needs to be improved.

Method used

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  • Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof
  • Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof
  • Composite material tool electrode for electrolytic deposition and electric spark and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Composite material tool electrodes were prepared according to the following steps in turn:

[0046] (1) Equipped with an electroless plating solution: 14 parts by mass of copper sulfate pentahydrate, 25 parts by mass of formaldehyde and 10 parts by mass of sodium hydroxide were dissolved in 1000 parts by mass of water, and mixed uniformly to prepare an electroless plating solution;

[0047] (2) SiC particle removal treatment: Wash small SiC particles with a particle size of 7 microns and large SiC particles with a particle size of 15 microns with deionized water, and put the washed SiC particles into hydrofluoric acid with a concentration of 30% Immerse in the solution for 10 minutes, then wash with distilled water and dry;

[0048] (3) Pickling of SiC particles: Put the SiC particles treated in step (2) into 90% HNO 3 solution, make HNO 3 The solution was immersed in SiC particles, and boiled at normal pressure for 10 minutes, then filtered and washed with distilled ...

Embodiment 2

[0065] The difference between this embodiment and Embodiment 1 lies in the following steps:

[0066] (1) In the step of preparing the electroless plating solution: the amount of raw materials is 15 parts by mass of copper sulfate pentahydrate, 28 parts by mass of formaldehyde and 11 parts by mass of sodium hydroxide dissolved in 1000 parts by mass of water;

[0067] (2) In the SiC particle removal treatment step: the particle size of the small SiC particles is 5 microns, the particle size of the large particles is 12 microns, and the immersion time in the hydrofluoric acid solution is 15 minutes;

[0068] (4) In the activation step of SiC particles: the stirring time of SiC particles in the activation solution is 6 minutes;

[0069] (5) TiB 2 In the particle removal treatment step: the particle size of the small SiC particles is 5 microns, the particle size of the large particles is 12 microns, and the immersion time in the hydrofluoric acid solution is 15 minutes;

[0070] ...

Embodiment 3

[0078] The difference between this embodiment and Embodiment 1 lies in the following steps:

[0079] (1) In the step of preparing the electroless plating solution: the amount of raw materials is 16 parts by mass of copper sulfate pentahydrate, 32 parts by mass of formaldehyde and 12 parts by mass of sodium hydroxide dissolved in 1000 parts by mass of water;

[0080] (2) In the SiC particle removal treatment step: the particle size of the small SiC particles is 3 microns, the particle size of the large particles is 8 microns, and the immersion time in the hydrofluoric acid solution is 20 minutes;

[0081] (4) In the activation step of SiC particles: the stirring time of SiC particles in the activation solution is 7 minutes;

[0082] (5) TiB 2 In the particle removal treatment step: the particle size of the small SiC particles is 3 microns, the particle size of the large particles is 8 microns, and the immersion time in the hydrofluoric acid solution is 20 minutes;

[0083] (7) ...

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Abstract

The invention discloses a composite material tool electrode for electrolytic deposition and electric spark and a preparation method of the composite material tool electrode, and belongs to the technical field of electrical discharge machining of electric spark. The composite material tool electrode for electrolytic deposition and electric spark is characterized by comprising, by weight, 16-18% of SiC particles, 14-16% of TiB2 particles, and the balance copper as a base body, and the SiC particles and the TiB2 particles are embedded in the base body. Due to the fact that the SiC particles and the TiB2 particles are added to the copper base body, compared with the method that only the SiC particles are added in the initial research stage, on the premise of not changing the total adding amount, the specific heat capacity of the tool electrode is improved by 10%, the coefficient of thermal expansion is lowered by 3%, the hardness is improved by 5%, and therefore the loss of the electrode under same electrical discharge machining parameters is lowered by 7%, and the roughness of a machined surface is lowered by 2%.

Description

technical field [0001] The invention belongs to the technical field of electric discharge machining, and in particular relates to a composite material tool electrode for electrodeposition electric discharge and a preparation method thereof. Background technique [0002] EDM is a special processing method that utilizes the pulsed spark discharge between two electrodes immersed in the working fluid to generate a large amount of heat energy to flame, evaporate and throw off the electrode material. Due to the incomparable superiority of other processing methods in processing special performance materials, complex structures and micro parts, EDM technology has been promoted and applied in recent years. In the process of EDM, the electrode material that is melted, gasified, and exploded not only removes the material of the workpiece, but also removes the material of the tool electrode, which inevitably produces a tool electrode. The loss of the tool electrode is directly mapped t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/04B23H1/06
Inventor 李丽戴春爽朱翠雯李志永
Owner SHANDONG UNIV OF TECH
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