A method of atomized cold plasma assisted cutting

A cold plasma and plasma technology, which is applied in the field of plasma jet assisted cutting, can solve the problems of surface burns on the workpiece and difficulty in achieving ideal results.

Active Publication Date: 2020-08-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, only using the method described in CN102059350A for cooling and lubrication is difficult to achieve the desired effect, and it is easy to cause burns on the surface of the workpiece

Method used

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  • A method of atomized cold plasma assisted cutting
  • A method of atomized cold plasma assisted cutting
  • A method of atomized cold plasma assisted cutting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 can realize atmospheric pressure atomized cold plasma assisted micro-milling of nickel-based superalloy.

[0037] The bare electrode cold plasma jet generator 1 uses the discharge form of the bare electrode. The atmospheric pressure cool plasma jet generated by this electrode will not cause breakdown discharge between the processed material. The positive pole of 13, that is, the high-voltage output end is connected to the high-voltage tungsten needle electrode, and the low-voltage output end is connected to the low-voltage copper electrode at the nozzle and grounded.

[0038] The working gas source 12 adopts high-purity nitrogen with a purity of 99.999%.

[0039] After the workpiece 6 is fixed on the working platform, the bare electrode cold plasma jet generator 1 is fixed on the Z-axis of the milling cutter, so that the distance between the jet and the workpiece contact area of ​​the cutter is 10mm.

[0040] Open the pressure reducing valve 11, adjust the fl...

Embodiment 2

[0042] Example 2 can realize atmospheric pressure atomized cold plasma assisted grinding.

[0043] The bare electrode cold plasma jet generator 1 uses the discharge form of the bare electrode. The atmospheric pressure cool plasma jet generated by this electrode will not cause breakdown discharge between the processed material. The positive pole of 13, that is, the high-voltage output end is connected to the high-voltage tungsten needle electrode, and the low-voltage output end is connected to the low-voltage copper electrode at the nozzle and grounded.

[0044] The working gas source 12 adopts high-purity nitrogen with a purity of 99.999%.

[0045] After the workpiece 6 is fixed on the working platform, the bare electrode cold plasma jet generator 1 is fixed on the grinding wheel feed shaft, so that the distance between the jet and the tool workpiece contact area is 10 mm.

[0046] Open the pressure reducing valve 11, adjust the flow meter 10 to make the flow rate reach 10L / min...

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Abstract

The invention provides a method for carrying out auxiliary cutting through atomized cold plasmas. A plasma jet generated by a cold plasma generator and an atomized cooling and lubrication medium are injected into a processing area in a mixing manner under the barometric pressure. The atomized cooling and lubrication medium is much easily subjected to phase change compared with a traditional cooling liquid, and high in heat transfer efficiency; and the plasma jet is capable of rapidly changing the surface hydrophilicity of a material, and the liquid-containing plasmas are higher in hydrophilicmodification efficiency, so that the atomized cooling and lubrication medium easily enters a cutting contact area, the cooling and lubrication characteristic of a contact interface of a tool in the cutting area, and a workpiece, is improved, the cutting temperature is greatly lowered, the wear of the tool is reduced, the machining hardening and the surface damage which are brought by the cutting temperature are reduced, and then the quality of the processed surface, and the surface integrity are improved, and the life of the tool is prolonged.

Description

technical field [0001] The invention relates to an atomized cold plasma jet-assisted cutting method, which belongs to the technical field of cutting technology. Background technique [0002] During the cutting process of metal or non-metallic materials, due to the air barrier layer between the workpiece and the tool, the obstruction of the steam layer, and the hydrophobicity of the new surface, it is difficult for the cooling medium to enter the cutting area, resulting in limited cooling and lubrication effect of the cooling medium, especially when processing titanium Hard-to-machine materials such as alloys, nickel-based superalloys, and pure iron will generate a lot of cutting heat and affect the integrity of the machined surface. Therefore, if the cooling medium can be introduced into the deep part of the cutting contact area through a special method, it is expected to improve the cooling and lubrication effect of the cooling medium and improve the integrity of the machin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P13/00H05H1/42
CPCB23P13/00H05H1/42
Inventor 刘新王冠淞刘硕刘吉宇孙晶宋金龙陈发泽
Owner DALIAN UNIV OF TECH
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