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Electrochemical additive manufacturing method with measuring feedback, and apparatus thereof

A technology of electrochemical machining and chemical reaction, applied in electrochemical manufacturing, electrochemical method for additive manufacturing, namely three-dimensional printing field, can solve the problem of difficult to control dimensional accuracy and so on

Inactive Publication Date: 2015-05-06
WUXI HUAZHEN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the invention is to overcome the existing problem that the dimensional accuracy is difficult to control in the electrochemical machining process

Method used

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  • Electrochemical additive manufacturing method with measuring feedback, and apparatus thereof

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Embodiment 1

[0012] The electrochemical method is used for subtractive manufacturing, and 80% saturated sodium chloride solution is used as the working medium. The material of the working electrode is an insoluble titanium electrode coated with iridium dioxide on the surface, and the working electrode is a slender cylinder with a diameter of 3 mm. The workpiece is tungsten steel, because of its high hardness, it is not suitable for surface engraving and milling by traditional machining methods. Connect the workpiece to the positive pole of the controller, and the working electrode to the negative pole of the controller. The workpiece and the working electrode are immersed in the working medium at the same time, and the working medium is installed in the working container and circulated through the pump to dissipate heat in the working container and the radiator to avoid overheating. A baseline operating current density of 10,000 amperes per square meter was used. Superimpose the AC curre...

Embodiment 2

[0014] The electrochemical method is used for additive manufacturing, and the bright nickel electroplating solution is used as the working solution. The material of the working electrode is an insoluble titanium electrode coated with iridium dioxide on the surface, and the working electrode is a slender cylinder with a diameter of 3 mm. The base material of the workpiece is a nickel plate. Connect the workpiece substrate to the negative pole of the controller, and the working electrode to the positive pole of the controller. The workpiece substrate and the working electrode are immersed in the working fluid at the same time, and the working fluid is contained in the working container and circulated through the pump to dissipate heat in the working container and the radiator to avoid overheating. A baseline operating current density of 1000 amperes per square meter was used. Superimpose the AC current with a frequency of 3000 Hz and an amplitude of 1 / 100 of the working curren...

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Abstract

The invention discloses an electrochemical manufacturing method with measuring feedback, and an apparatus for realizing the method, and especially relates to the field of additive manufacturing, that is three dimensional printing. In the invention, a part with required profile dimension and component is generated in an electrochemical dissolution or electrochemical deposition mode, the method includes a manufacturing process and a measuring process which are arranged in a repeated cyclic staggered mode, the manufacturing process adopts direct-current or one-way repeated pulse heavy current to dissolve or deposit a material, and the measuring process adopts alternating current undercurrent to measure impedance in order to determine a distance between an electrode and a workpiece. A measurement result is calculated through a microprocessor, and is used to determine the current power preset in the manufacturing process or the work feeding speed and distance.

Description

technical field [0001] The invention relates to the field of electrochemical manufacturing, in particular to the field of additive manufacturing, that is, three-dimensional printing, using electrochemical methods. Background technique [0002] The additive manufacturing method, that is, three-dimensional printing, is easy to connect with computer-aided design, and is suitable for small batch manufacturing of parts with complex inner and outer surface shapes. The electrochemical manufacturing method is suitable for processing high-hardness, high-toughness or refractory metals in subtractive manufacturing, and suitable for depositing metals with large differences in melting point or density that are difficult to directly form alloys in additive manufacturing. Electrochemical additive manufacturing is suitable for obtaining functional materials with special composition, and can obtain good surface quality with the cooperation of agents such as brighteners. However, the traditi...

Claims

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Application Information

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IPC IPC(8): C25D1/00C25D5/08
CPCC25D1/003
Inventor 谷涛沈绍典
Owner WUXI HUAZHEN NEW ENERGY TECH
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