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Plated zinc passivating liquid

A technology of passivation solution and sulfuric acid, which is applied in the coating process of metal materials, can solve the problems of light color and poor color consistency on the product surface, and achieve the effect of stable color, saturated color and good color consistency

Inactive Publication Date: 2014-02-26
SUZHOU CITY WUZHONG DISTRICT TAIHU LIGHT TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of poor color consistency and light color of the product surface after using the existing passivation solution, the invention provides a new galvanizing passivation solution

Method used

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Examples

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Embodiment Construction

[0008] A kind of galvanizing passivation solution of the present invention, composition comprises water, sulfuric acid, nitric acid and chromic anhydride, this passivation solution composition also contains benzoic acid, acetic acid and potassium sodium tartrate, gets 1000g pure water and adds sulfuric acid to be 4g; Nitric acid 4g; benzoic acid 3g; acetic acid 1.5g; chromic anhydride 8g; potassium sodium tartrate 5g.

[0009] When preparing the passivation solution, first determine the total volume of the prepared passivation solution, and then calculate the weight or volume of each component according to the total volume, add them to the container in turn, and stir evenly.

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PUM

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Abstract

The invention discloses a plated zinc passivating liquid. The composition of the passivating liquid comprises water, sulfuric acid, nitric acid and chromic anhydride, and also comprises benzoic acid, acetic acid and sodium potassium tartrate. In the plated zinc passivating liquid, after benzoic acid, acetic acid and sodium potassium tartrate are added, a film reaction is allowed to be more full, so as to obtain a film layer with stable color luster and saturated colors, therefore, a product passivated by the passivating liquid has good consistency of the surface color luster, and has saturated and bright colors.

Description

technical field [0001] The invention relates to a galvanizing passivation technology, in particular to a galvanizing passivation solution. Background technique [0002] At present, there are many passivation methods for galvanized products, mainly divided into chromic acid passivation and chromium-free passivation, and chromic acid passivation is still the mainstream process in the industry. According to the chromium content of passivation solution, chromic acid passivation can be divided into high chromium passivation, low chromium passivation and ultra-low chromium passivation. When the existing passivation solution is used to passivate the galvanized products, it is difficult to control the color of the products after low chromium passivation and ultra-low chromium passivation, the color consistency is poor, and the visual effect is not good, especially for large surface areas. The performance of the product is more serious; high chromium passivation, low chromium passiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/27
Inventor 管威
Owner SUZHOU CITY WUZHONG DISTRICT TAIHU LIGHT TEXTILE
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