Laser-reinforced electrodeposition rapid-prototyping processing apparatus and method

A forming processing and laser strengthening technology, applied in the direction of electroforming, electrolysis process, etc., can solve the problems of adding templates for preparation and installation, metal parts with complex structures, and low precision of formed parts, so as to improve quality and performance, and highly selectivity , The effect of accelerating the charge transfer speed

Inactive Publication Date: 2014-02-19
TONGLING UNIV
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Problems solved by technology

Nanjing University of Aeronautics and Astronautics applied spray electrodeposition technology to the field of rapid prototyping technology, and proposed a selective electrodeposition process (CN00133282.1). During the forming process, the nozzle used as the anode sprays the high-speed flowing electrodeposition solution onto the surface of the cathode , the metal ions in the electrodeposition solution are continuously deposited under the action of an external electric field, and a layer of the part can be selectively deposited in a specific area by controlling the scanning motion of the nozzle, and a three-dimensional entity can be produced by layer-by-layer deposition superposition Prototype parts; spray electrodeposition adopts a special liquid phase mass transfer method, which increases the deposition rate by dozens or even hundreds of times, but due to the influence of jet localization, the precision of formed parts is not high
Zhejiang Sci-tech University organically combined electrochemical deposition technology, rapid prototyping technology and numerical control technology, and proposed the rapid prototyping technology of numerical control selective electrodeposition deposition, which can directly form and manufacture metal parts. Coupled with the limitation of the electrodeposition speed itself, the forming speed is slow
Patent CN200710025121.1 proposes a method of directly man

Method used

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  • Laser-reinforced electrodeposition rapid-prototyping processing apparatus and method
  • Laser-reinforced electrodeposition rapid-prototyping processing apparatus and method

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Embodiment 1

[0024] Such as figure 1 As shown, this embodiment includes a laser generating mechanism, an anode seat 6, an anode 7, a cathode, a power supply 10, a three-dimensional mobile platform, a working platform 11, a deposition tank 15, a constant temperature liquid storage mechanism and a controller 13; the anode 7 and the laser The generating mechanism is connected, the anode 7 is located in the anode seat 6, the deposition tank 15 is provided with an electrodeposition solution 19, the cathode is a deposition substrate 16, and the deposition substrate 16 is immersed in the electrodeposition solution 19 in the deposition tank 15, and the power supply 10 is respectively Connect the cathode and the anode 7; the three-dimensional mobile platform includes an X-axis mobile platform 17, a Y-axis mobile platform 18 and a Z-axis mobile platform 12, and one end of the working platform 11 is connected to the cathode, and the other end is connected to the Z-axis mobile platform 12, The X-axis mo...

Embodiment 2

[0037] This embodiment adopts laser-enhanced electrodeposition to rapidly form Cu metal parts on the graphite surface, and the specific steps are as follows:

[0038] (1) First, the computer 14 performs three-dimensional modeling of the metal parts to be processed, and generates STL files, and then divides the three-dimensional solid model in STL format into many small thin layers through layering software, and generates according to the two-dimensional data of each thin layer section scan path;

[0039] (2) Preparation of electrodeposition solution 19: copper sulfate (CuSO 4 ·5H 2 O) 50g·L -1 , sulfuric acid (H 2 SO 4 ) 50g·L -1 , wetting agent (C 12 h 25 SO 4 Na) 0.1~0.2g·L -1 , brightener (saccharin) 1~3g·L -1 , the pH value is kept at 4±0.1, and the temperature of the electrodeposition solution 19 is kept at about 45°C; the graphite deposition substrate 16 is subjected to surface treatments such as polishing, degreasing, passivation, washing, and drying;

[0040...

Embodiment 3

[0043] This embodiment adopts laser-strengthened electrodeposition to rapidly form Ni-Mn alloy parts on the surface of 1Cr18Ni9Ti stainless steel, and the specific steps are as follows:

[0044] (1) First, the computer 14 performs three-dimensional modeling of the metal parts to be processed, and generates STL files, and then divides the three-dimensional solid model in STL format into many small thin layers through layering software, and generates according to the two-dimensional data of each thin layer section scan path;

[0045] (2) Preparation of electrodeposition solution 19: nickel sulfamate (Ni(NH 2 SO 3 ) 2 4H 2 O) 430~600g·L -1 , manganese sulfamate (Mn(NH 2 SO 3 ) 2 4H 2 O) 12~28g·L -1 , nickel chloride (NiCl 2 ·6H 2 O) 15~25g·L -1 , boric acid (H 3 BO 3 ) 30~35g·L -1 , wetting agent (C 12 h 25 SO 4 Na) 0.1~0.2g·L -1 , brightener (saccharin) 1~3g·L -1 , the pH value is kept at 4±0.1, and the temperature of the electrodeposition solution 19 is kept...

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Abstract

The invention discloses a laser-reinforced electrodeposition rapid-prototyping processing apparatus and a laser-reinforced electrodeposition rapid-prototyping processing method. The apparatus comprises a laser generation mechanism, an anode, an anode seat, a cathode, a power supply, a three dimensional mobile platform, a working platform, a deposition groove, a constant temperature liquid storage mechanism and a controller. Laser radiation leads to rise of temperature at an electrodeposition solution/cathode boundary zone, decrease of activation energy and overpotential of an electrode reaction and acceleration of a charge transfer speed; laser heating results in generation of a great temperature gradient in the surface area of the cathode, which lead to micro-stirring of an electrodeposition solution in the area, so one the one hand, the thickness of a diffusion layer on an electrode surface is decreased, and on the other hand, convection of the solution occurs, mass transfer process is accelerated, consumed ions in the diffusion layer are supplemented in time, the speed of electrodeposition is accelerated, and a laser reinforced electrodeposition speed is substantially increased, thereby realizing high speed deposition. The method provided by the invention has the advantages of a fast deposition speed, high prototyping precision, no need for shielding and capacity of directly and rapidly manufacturing a precise metal part with a complex shape, a compact and uniform structure and good mechanical properties.

Description

technical field [0001] The invention relates to a rapid prototyping processing technology, in particular to a laser-enhanced electrodeposition rapid prototyping processing device and method. Background technique [0002] Rapid prototyping technology (Rapid Prototyping, RP) starts from the CAD geometric model of the part, and through the software layered discrete and numerical control forming system, the material is piled up with a laser beam or other methods to form a solid part. Because it converts complex three-dimensional manufacturing into a series of two-dimensional manufacturing superpositions, it can generate almost arbitrarily complex parts without molds and tools, which greatly improves production efficiency and manufacturing flexibility. Since RP technology does not produce waste and cause environmental pollution in the process of manufacturing products, it is also a green manufacturing technology. [0003] With the development and application of new materials, es...

Claims

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Application Information

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IPC IPC(8): C25D1/00C25D5/00
Inventor 王东生田宗军周杏花朱坤锋季燕沈理达
Owner TONGLING UNIV
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