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A kind of aluminum alloy automatic polishing liquid based on phosphoric acid system

A technology of aluminum alloy and polishing fluid, which is applied in the field of polishing agents, can solve problems such as limited light output speed, plastic discoloration, and different colors, and achieve the effect of increasing light output speed and preventing uneven corrosion

Active Publication Date: 2019-09-20
深圳市鑫鸿达清洗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are some problems in these patents: first, these patent solutions contain a certain proportion of sulfuric acid, which will inevitably cause plastic discoloration; There are problems such as flushing, marks, and discoloration on the surface

Method used

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  • A kind of aluminum alloy automatic polishing liquid based on phosphoric acid system
  • A kind of aluminum alloy automatic polishing liquid based on phosphoric acid system
  • A kind of aluminum alloy automatic polishing liquid based on phosphoric acid system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 85% industrial phosphoric acid: 1200g / L; corrosion inhibitor: 1g / L; brightener: 2g / L copper sulfate, 3g / L sodium polydisulfide dipropane sulfonate;

[0039] The polishing process is shown in Table 1. The cleaning tank is the anode tank sulfuric acid potion used twice, combined with the RTS202C product of Xinhongda Company, the tank liquid has a long life and good cleaning effect; the alkali etching tank is composed of sodium hydroxide and sodium gluconate, and sodium gluconate can effectively complex some Metal ions to avoid the formation of some insoluble solids in the bath; the polished workpiece is 6061 aluminum alloy.

[0040] Table 1. Polishing process flow

[0041]

[0042]

Embodiment 2

[0044] 85% industrial phosphoric acid: 1200g / L; corrosion inhibitor: 3g / L; brightener: 3g / L copper sulfate, 3g / L sodium polydisulfide dipropane sulfonate;

[0045] The polishing process is shown in Table 1, and the polished workpiece is 6061 aluminum alloy

Embodiment 3

[0047] 85% industrial phosphoric acid: 1200g / L; corrosion inhibitor: 1g / L; brightener: 3g / L copper sulfate, 6g / L 3,3′-dithiodipropanol

[0048] The polishing process is shown in Table 1, and the polished workpiece is 6061 aluminum alloy

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Abstract

The invention discloses an automatic aluminum alloy polishing solution based on a phosphoric acid system. The automatic aluminum alloy polishing solution is composed of phosphoric acid, a controlled release agent and a brightening agent in a matching manner. The weight ratio of the controlled release agent to the brightening agent is 1:1-20. The preferable weight ratio of the controlled release agent to the brightening agent is 1:1-10. The automatic aluminum alloy polishing solution is used for solving the problems that a plastic part of an integrally-formed aluminum plastic workpiece discolors due to two phosphoric acid-sulfuric acid acidification polishing systems, and due to the fact that an existing automatic pure phosphoric acid polishing system is limited in bright dipping speed and uneven in corrosion, hard spots, marks, different colors and the like are caused, and the superior polishing performance is achieved.

Description

technical field [0001] The invention relates to a polishing agent, in particular to an automatic polishing liquid for an aluminum alloy based on a phosphoric acid system. Background technique [0002] Aluminum alloy has good processing performance, light weight, rich anode color, and is more and more widely used in the field of 3C shells; chemical polishing has high operating temperature and fast reaction speed. The length of time varies, often resulting in uneven surface corrosion, resulting in problems such as marks, flushing, pitting, and discoloration, affecting product quality, greatly reducing the yield of a production, and increasing production costs sharply. [0003] The new aluminum-plastic integral molding technology is being used more and more in the field of mobile phones and tablets. PBT, PPS, PPSU, PEI, PET, PC, ABS and corresponding compatible materials are widely used. These plastics are often not resistant to high-temperature sulfuric acid corrosion; tradit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F3/03
Inventor 郭晓军张益良
Owner 深圳市鑫鸿达清洗技术有限公司