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Additive manufacturing metal surface polishing and grinding method

An additive manufacturing and metal surface technology, applied in the field of additive manufacturing metal surface polishing and grinding, can solve problems such as poor operating conditions, long processing time, and reduced workpiece accuracy, and achieve simplified processing procedures, high processing speed, and reduced costs. Effect

Inactive Publication Date: 2017-02-01
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still technical difficulties in laser polishing technology: that is, the influence of different metal alloy powders on the surface roughness of additively manufactured metal products has not been considered for additively manufactured metal materials; An effective oxidation prevention and control mechanism; for additively manufactured metal products with internal structures, no effective laser polishing process method has been studied
At the same time, laser polishing has limitations such as long processing time, poor operating conditions, subsequent processing, and high cost.
Chinese patent document CN201410315813.X discloses a method for multiple laser polishing and strengthening on the surface of metal parts for additive manufacturing, but the utilization rate of the laser polishing method is low, the cost is high, and it is easy to reduce the accuracy of the workpiece

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, take 2 / 3 volume of distilled water in a 1L tank, dissolve 3500g of triethanolamine and 4000g of potassium carbonate in turn, and after all the reagents in the tank are dissolved, pour 1500g of sodium chloride into the tank under rapid stirring until completely mixed Evenly, finally add water to 1L to obtain electrolyte; put the additively manufactured Ti-6Al-4V parts into the prepared solution, use the additively manufactured Ti-6Al-4V as the anode, and graphite as the cathode. After the voltage rises to 350V, the Additively manufactured Ti-6Al-4V parts are placed in the solution and treated for 3 to 5 minutes to achieve surface polishing and grinding, and the surface roughness is in the range of 10 to 500 nanometers.

Embodiment 2

[0026] First, take 2 / 3 volume of deionized water in a 1L tank, dissolve 3000g glycerin and 5000g sodium carbonate in turn, after all the reagents in the tank are dissolved, pour 1000g potassium chloride into the tank under rapid stirring until Completely mix evenly, and finally add water to 1L to obtain an electrolyte; put the additively manufactured W60Ni40 pieces into the prepared solution, use the additively manufactured W60Ni40 as the anode, and graphite as the cathode. After the voltage rises to 380V, put the additively manufactured W60Ni40 pieces into the The solution is treated for 3 to 5 minutes to realize surface polishing and grinding, and the surface roughness is in the range of 10 to 500 nanometers.

Embodiment 3

[0028] First, take 2 / 3 of distilled water in a 1.5L tank, dissolve 3500g triethanolamine and 4x000g sodium carbonate in turn, after all the reagents in the tank are dissolved, pour 1000g sodium chloride into the tank solution under rapid stirring until completely mixed Evenly, finally add water to 1.5L to get the electrolyte; put the additively manufactured 316L stainless steel parts into the prepared solution, use the additively manufactured 316L as the anode, graphite as the cathode, and put the additively manufactured 316L parts into the The solution is treated for 3 to 5 minutes to realize surface polishing and grinding, and the surface roughness is in the range of 10 to 500 nanometers.

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PUM

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Abstract

The invention discloses an additive manufacturing metal surface polishing and grinding method. The method includes the following steps that S1, an electrolyte solution is prepared, specifically, all the following components including, by mass, 40%-50% of carbonate, 20%-40% of carbonaceous organic material, 10%-15% of halide and 10%-15% of water are mixed, and a mixed electrolyte solution is obtained; and S2, additive manufacturing metal micro-arc discharge is performed, specifically, an additive manufacturing metal workpiece is put in the prepared electrolyte solution at the room temperature, additive manufacturing metal serves as an anode, graphite serves as a cathode, the additive manufacturing metal workpiece is put in the solution to be treated for 3-5 minutes under working voltage, and metal surface polishing and grinding are achieved. The additive manufacturing metal surface polishing and grinding method is high in treatment speed and short in treatment time, the surface bio-compatibility is high, residual materials can be fast removed, and moreover, the surface properties are not affected.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to a metal surface polishing and grinding method for additive manufacturing. Background technique [0002] Metal polishing can make the surface of the workpiece smoother and brighter. Commonly used polishing processes include mechanical polishing, ultrasonic polishing, ion beam polishing, and chemical polishing. Laser polishing is a new type of non-contact metal surface treatment process that can overcome the shortcomings of mechanical and electrochemical polishing. However, there are still technical difficulties in laser polishing technology: that is, the influence of different metal alloy powders on the surface roughness of additively manufactured metal products has not been considered for additively manufactured metal materials; An effective oxidation prevention and control mechanism; for additively manufactured metal products with internal structures, no e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/16
CPCC25F3/16C25F3/22C25F3/24C25F3/26
Inventor 蒋永锋包晔峰杨可陈秉岩
Owner HOHAI UNIV CHANGZHOU
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