Polishing agent, method and system for polishing inner runner of nickel base alloy workpiece

A nickel-based alloy, inner flow channel technology, applied in the field of chemical polishing, can solve problems such as difficult to control polishing effect, poor polishing effect, inability to polish inner flow channel, etc., achieve good chemical polishing effect, improve surface finish, save polishing reagents Effect

Active Publication Date: 2017-12-12
飞而康快速制造科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional mechanical polishing method cannot polish the inner runner, chemical polishing is one of the better inner runner polishing methods
The traditional chemical polishing method generally adopts immersion polishing, which completely immerses the workpiece in the chemical test solution. The system is relatively simple, but the polishing effect is not easy to control
The surface roughness of the original workpiece has a great influence on the chemical polishing effect. The d

Method used

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  • Polishing agent, method and system for polishing inner runner of nickel base alloy workpiece
  • Polishing agent, method and system for polishing inner runner of nickel base alloy workpiece
  • Polishing agent, method and system for polishing inner runner of nickel base alloy workpiece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The 3D printed HastlloyX nickel-based alloy workpiece used in this embodiment has a linear inner flow channel, and the original surface roughness of the inner flow channel after forming is Ra12.5-25.

[0061] Phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid and distilled water are uniformly mixed according to the molar ratio of 16:12:16:51:239 to obtain a mixed solution.

[0062] Add ferric chloride hexahydrate and sulfosalicylic acid into the mixed solution, completely dissolve and stir evenly to obtain a polishing reagent. The molar ratio of ferric chloride hexahydrate to phosphoric acid is 3.7:16, and the molar ratio of sulfosalicylic acid to phosphoric acid is 0.4:16.

[0063] The polishing reagent is heated to 40°C, and then sent into the inner flow channel to polish the inner flow channel. The polishing reagent is in a flowing state in the inner channel, the flow rate is 700ml / min, and the polishing time is 1min.

[0064] The polishing agent is...

Embodiment 2

[0070] The 3D printed IN718 nickel-based alloy workpiece used in this embodiment has an L-shaped inner flow channel, and its surface roughness is Ra12.5-25.

[0071] Phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid and distilled water are uniformly mixed in a molar ratio of 17:8:17:47:250 to obtain a mixed solution.

[0072] Add ferric chloride hexahydrate and sulfosalicylic acid into the mixed solution, completely dissolve and stir evenly to obtain a polishing reagent. The molar ratio of ferric chloride hexahydrate to phosphoric acid is 4:17, and the molar ratio of sulfosalicylic acid to phosphoric acid is 0.8:17.

[0073] The polishing reagent is heated to 60°C, and then sent into the inner flow channel to polish the inner flow channel. The polishing reagent is in a flowing state in the inner flow channel, the flow rate is 400ml / min, and the polishing time is 3min.

[0074] The polishing agent is discharged and the workpiece is cleaned.

[0075] The surf...

Embodiment 3

[0080] The 3D printed IN625 nickel-based alloy workpiece used in this embodiment has an S-like inner flow channel, and its surface roughness is Ra12.5-25.

[0081] Phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid and distilled water are uniformly mixed according to the molar ratio of 22:12:19:42.5:194 to obtain a mixed solution.

[0082] Add ferric chloride hexahydrate and sulfosalicylic acid into the mixed solution, completely dissolve and stir evenly to obtain a polishing reagent. The molar ratio of ferric chloride hexahydrate to phosphoric acid is 4.4:22, and the molar ratio of sulfosalicylic acid to phosphoric acid is 0.8:22.

[0083] The polishing reagent is heated to 50°C, and then sent into the inner flow channel to polish the inner flow channel. The polishing reagent keeps flowing in the inner channel, the flow rate is 600ml / min, and the polishing time is 2min.

[0084] The polishing agent is discharged and the workpiece is cleaned.

[0085] After ...

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Abstract

The invention discloses a polishing agent, method and system for polishing an inner runner of a 3D-printed nickel base alloy workpiece. The method comprises the following steps that the polishing agent containing phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid, ferric chloride hexahydrate and sulfosalicylic acid is prepared; the polishing agent is heated to 40-60 DEG C and then conveyed into the inner runner of the workpiece and keeps flowing at a certain speed so that the inner runner can be polished; and the polishing agent is discharged, and the workpiece is washed. Through the polishing agent, method and system for polishing the inner runner of the 3D-printed nickel base alloy workpiece, the surface smoothness of the inner runner of the 3D-printed nickel base alloy workpiece can be effectively improved, so that the inner runner becomes uniform and smooth; and compared with traditional polishing methods for the inner runner of the 3D-printed nickel base alloy workpiece, the polishing agent, the method and the system are better in polishing effect, more convenient and quicker.

Description

technical field [0001] The present invention relates to the chemical polishing of the inner flow channel of a 3D printed nickel-based alloy workpiece, in particular to a method for chemically polishing the inner flow channel of a 3D printed nickel-based alloy workpiece, and a method for chemically polishing a 3D printed nickel-based alloy workpiece A system of inner runners and a polishing reagent for chemically polishing the inner runners of 3D printed nickel-based alloy workpieces. Background technique [0002] Nickel-based alloy materials are widely used in chemical machinery, aerospace, ships and other fields due to their good comprehensive properties, high strength at high temperatures, and good oxidation and corrosion resistance. 3D printing is an emerging manufacturing process that can shape many structures that cannot be achieved by traditional machining. Among them, the application of 3D printed nickel-based alloy workpieces with complex inner runners in the aerosp...

Claims

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Application Information

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IPC IPC(8): C23F3/06
Inventor 宋子玲
Owner 飞而康快速制造科技有限责任公司
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