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Cleaning agent for metal surface, preparation method and method for cleaning metal surface

A metal surface and cleaning agent technology, applied in the field of metal surface treatment, can solve the problems of large environmental pollution and complex cleaning process, and achieve the effect of simplifying the process flow, improving environmental protection performance, reducing waste liquid treatment and water consumption

Active Publication Date: 2020-03-20
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complicates the cleaning process; at the same time, it is usually necessary to use chromium-containing compounds, nitric acid, hydrofluoric acid, etc. in rust removers, resulting in greater environmental pollution

Method used

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  • Cleaning agent for metal surface, preparation method and method for cleaning metal surface
  • Cleaning agent for metal surface, preparation method and method for cleaning metal surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0024] 1. Preparation of metal surface cleaning agent: add surfactant, emulsifier, complexing agent, sodium bicarbonate and ferrate into deionized water. The metal surface cleaners A1-A7 were obtained according to the ancestral tomb ratio in Table 1, and the specific dosage of each group is shown in Table 1.

[0025] 2. Put a 2×2cm magnesium alloy sample (brand AZ91D) into the cleaning agent in step (1) for cleaning to obtain a cleaned magnesium alloy sample. The cleaning temperature is 40°C, and the cleaning time is 5 minutes.

Embodiment 8

[0027] 1. Put a 2×2cm aluminum alloy sample (brand 6061) into the cleaning agent A1 obtained in Example 1 for cleaning, and obtain a cleaned aluminum alloy sample. The cleaning temperature is 60°C and the cleaning time is 5 minutes.

[0028] Table 1

[0029]

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PUM

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Abstract

The invention relates to a metal surface cleaning agent. The cleaning agent is an aqueous solution containing surfactants, emulsifiers, complexing agents, carbonate and ferrate. The invention also provides a preparation method of the metal surface cleaning agent, and a method for cleaning metal substrate with the cleaning agent. The cleaning agent provided by the invention can be used for removing oil and rust simultaneously, so that the processing steps are reduced. Moreover, corrosion to the metal surface is avoided while removing the rust from the substrate surface.

Description

Technical field [0001] The invention relates to metal surface treatment technology, in particular to a metal surface cleaning agent and a preparation method thereof, and a metal surface cleaning method. Background technique [0002] When metal materials are used in various fields, it is often necessary to change their surface conditions to improve their corrosion resistance, wear resistance, weldability, decoration and other properties. The simplest and most effective method is to plate a layer of metal or alloy with the required properties on the substrate by electrochemical methods, namely electroplating and electroless plating. However, in the process of processing, various types of grease, mineral oil, fiber, sand, dust, hand sweat, fingerprints, and even oxidized rust of the metal are usually left on the metal surface. These dirts are usually difficult to see with the naked eye, but they often affect the plating effect of electroplating or electroless plating, such as: ①The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G5/06
CPCC23G5/06
Inventor 韦家亮
Owner BYD CO LTD
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