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Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode

A technology of dispersant and working fluid, which is applied in the field of EDM small hole machining technology for making fluid and copper/nickel electrodes, can solve the problems of rising processing costs, reduce processing quality, improve processing speed, depth-to-diameter ratio, and price. low cost effect

Inactive Publication Date: 2014-10-22
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the electromagnetic vibration or ultrasonic vibration method, it is often necessary to add additional devices, resulting in an increase in processing costs.

Method used

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  • Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode
  • Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode
  • Electric spark small hole machining technology achieved through dispersing agent working solution and brass/nickel electrode

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0050] The new technology will be described in further detail below in combination with experiments and specific implementation methods.

[0051] This test was carried out on D703F small hole EDM machine tool, using positive polarity machining (the workpiece and tool electrode were respectively connected to the positive and negative poles of the pulse power supply), supplemented by high-pressure (3.5MPa) working fluid to cool and remove chips, and the rotation speed of the tool electrode was 120r / min. The workpiece is stainless steel (1Cr18Ni9Ti), the thickness of the workpiece is 80mm, the tool electrode is a porous brass tubular electrode with a diameter of φ2mm and a Cu / Ni porous composite electrode with a diameter of φ2.02mm. After the working fluid medium is pressurized by the water pump, it acts on the hollow rotating tubular electrode, and is sprayed out at a high speed at the working end of the electrode to wash away the electrolytic corrosion products generated by the...

Embodiment approach 2

[0089] 1) Development of water-based dispersant working fluid

[0090] Water-based dispersant working fluid, its formula is shown in Table 7, and Table 8 is the performance of the dispersant used:

[0091] Table 7 Formula of working solution

[0092]

[0093] Table 8 T-225 Dispersant Properties

[0094]

[0095]

[0096] The specifications of T-225 dispersant are as follows:

[0097] Brand: Taihe 55719-33-0 Place of Origin: Zaozhuang, Shandong

[0098] Main ingredients: maleic anhydride, acrylic acid, hydroxypropyl acrylate

[0099] Dispersant working solution preparation process: first prepare a 35L plastic bucket and a 1L measuring cylinder; add 25L of tap water to the plastic bucket, use the measuring cylinder to take 1.0L of T-225 dispersant and pour it into the plastic bucket, and use a plastic stick or Stir with a rubber rod for 5 minutes. After fully fused, place it at room temperature for use; T-225 dispersant can well disperse small solid particles that a...

Embodiment approach 3

[0124] 1) Development of water-based dispersant working fluid

[0125] Water-based dispersant working fluid, its formula is shown in Table 11, and Table 12 is the performance of the dispersant used:

[0126] The formula of table 11 working solution

[0127]

[0128] Table 12T-225 dispersant properties

[0129]

[0130]

[0131] The specifications of T-225 dispersant are as follows:

[0132] Brand: Taihe 55719-33-0 Place of Origin: Zaozhuang, Shandong

[0133] Main ingredients: maleic anhydride, acrylic acid, hydroxypropyl acrylate

[0134] Dispersant working solution preparation process: first prepare a 30L plastic bucket and a 1L measuring cylinder; add 23L of tap water to the plastic bucket, use the measuring cylinder to take 0.75L of T-225 dispersant and pour it into the plastic bucket, use a plastic stick or Stir with a rubber rod for 5 minutes. After fully fused, place it at room temperature for use; T-225 dispersant can well disperse small solid particles th...

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Abstract

The invention provides an electric spark small hole machining technology achieved through a dispersing agent working solution and a brass / nickel electrode and belongs to the field of non-traditional machining of an advanced manufacturing technology. The technology is characterized in that the water-based working solution and the brass / nickel composite electrode are used for conducting electric spark small hole machining, no improvement on an electric spark small hole machining lathe is needed, it is only required that the outer surface of the water-based dispersing agent working solution is used and the surface of a brass tubular electrode is electroplated with a layer of metal nickel with the melting point higher than that of an internal base material, and therefore the composite electrode is formed; the electroplating technology is mature, a core raw material of the working solution is low in cost, preparation is simple and practical, the technology is economical and easy to achieve, the speed, the depth-to-diameter ratio and the quality for electric spark small hole machining can be improved to a great extent through small investment, and the relative loss rate of a tool is reduced. The electric spark small hole machining speed and the depth-to-diameter ratio are improved, the electrode loss of the tool is reduced, the machining quality is improved, and the technology is wide in application prospect and high in popularization value.

Description

technical field [0001] The invention discloses an EDM small hole machining process using a dispersant working liquid and a copper / nickel electrode, which belongs to the special processing field of advanced manufacturing technology, and specifically relates to a dispersant working liquid and a copper / nickel compound using tap water plus a dispersant The technology of electric discharge small hole machining with electrodes, the invention not only improves the processing speed and depth-to-diameter ratio of electric discharge small hole machining, but also reduces tool electrode loss, improves processing quality, and has broad application prospects and promotion value. Background technique [0002] Since the advent of EDM technology in the 1940s, it has become a relatively mature technology through continuous development and progress. It is widely used in civil, national defense and other fields, and has an irreplaceable position and role in the modern manufacturing industry. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H9/14B23H1/08
Inventor 曹明让安海亮郭红桥潘鹏山杨胜强
Owner TAIYUAN UNIV OF TECH
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