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Zinc alloy blackening treatment liquid for lamps

A blackening treatment, zinc alloy technology, applied in the direction of metal material coating process, etc., can solve the problems of hanging ash or slag, increase production cost, increase the difficulty of cleaning and blackening liquid treatment, etc., and achieve good blackening effect and decorative effect. Excellent performance

Inactive Publication Date: 2015-02-11
WUXI SHITANGWAN IND PARK DEV CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to meet the national sewage discharge standard, surface treatment enterprises must increase investment in the treatment of sewage discharge, which greatly increases the production cost; most of the formulas will produce hanging ash or sediment during the blackening process, which increases the treatment of cleaning and blackening liquid difficulty

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0014] A zinc alloy blackening treatment solution for lamps, the composition of the treatment solution is calculated by weight percentage: oxalic acid 6%, citric acid 9%, 85% phosphoric acid 5%, sodium chloride 8%, trisodium phosphate 2%, over Potassium oxide 14%, sodium pyrophosphate 2.5%, 8-hydroxyquinoline 2.0%, copper sulfate 11%, carotene 1.5%, and the balance is water.

Embodiment 2

[0016] A zinc alloy blackening treatment solution for lamps, the composition of the treatment solution is calculated by weight percentage: 8% oxalic acid, 7% citric acid, 7% 85% phosphoric acid, 6% sodium chloride, 4% trisodium phosphate, over Potassium oxide 12%, sodium pyrophosphate 3.5%, 8-hydroxyquinoline 1.0%, copper sulfate 13%, carotene 0.5%, and the balance is water.

Embodiment 3

[0018] A zinc alloy blackening treatment solution for lamps. The composition of the treatment solution is calculated by weight percentage: 7% oxalic acid, 8% citric acid, 6% 85% phosphoric acid, 7% sodium chloride, 3% trisodium phosphate, and Potassium oxide 13%, sodium pyrophosphate 3.0%, 8-hydroxyquinoline 1.5%, copper sulfate 12%, carotene 1.0%, and the balance is water.

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Abstract

The present invention discloses a zinc alloy blackening treatment liquid for lamps. The treatment liquid comprises, by weight, 6-8% of oxalic acid, 7-9% of citric acid, 5-7% of 85% phosphoric acid, 6-8% of sodium chloride, 2-4% of trisodium phosphate, 12-14% of potassium peroxide, 2.5-3.5% of sodium pyrophosphate, 1.0-2.0% of 8-hydroxyquinoline, 11-13% of copper sulfate, 0.5-1.5% of carotene, and the balance of water.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a zinc alloy blackening treatment liquid for lamps. Background technique [0002] Zinc and zinc alloys are widely used in lamps. In order to beautify the appearance of zinc alloy lamps and meet the requirements of light absorption on the surface of some special devices, it is necessary to treat the surface of zinc alloy to black. [0003] In the current traditional industrial production, most of the formulas used for the blackening of the surface of zinc and zinc alloys contain toxic ingredients such as trivalent chromium, hexavalent chromium, selenium salts, rare metal salts or cyanides, which seriously threaten operators. health and cause serious pollution to the environment. [0004] CN101283117A provides a treatment solution for forming a black trivalent chromium chemical conversion film with a uniform and stable black, glossy appearance and corrosion resistance re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/47
CPCC23C22/47
Inventor 庄进
Owner WUXI SHITANGWAN IND PARK DEV CONSTR
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