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Low temperature and low foam electroplating degreasing additive agent

An additive and low-temperature technology, which is applied in the field of chemical cleaning and degreasing of metal materials, can solve problems such as unknown composition, increased material operating costs, and severe foam, and achieves low production costs, less foam, and high production efficiency.

Active Publication Date: 2011-04-20
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the newly-built 2# tinning and TFS unit has greatly improved the energy consumption of the alkaline cleaning process, the main additive (SNN-25) in the alkaline cleaning solution is mainly imported from Japan, and its composition is unknown. Material running costs, and in use, foam is pretty bad

Method used

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  • Low temperature and low foam electroplating degreasing additive agent
  • Low temperature and low foam electroplating degreasing additive agent
  • Low temperature and low foam electroplating degreasing additive agent

Examples

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] According to the present invention, 7 kinds of additives with different mass percentages of chemical components were produced, and comparative tests were carried out respectively. The specific formulations thereof are shown in Table 1.

[0026]

[0027] The chemical component mass percent of each additive in the embodiment of the present invention 1-7 in table 1

[0028] Table 2 shows the measurement results of the comparison test between the degreasing low-temperature low-foaming additive and the common degreasing agent in Examples 1-7 of the present invention.

[0029]

[0030]

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PUM

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Abstract

The invention discloses a low temperature and low foam electroplating degreasing additive agent, which comprises, by mass percentage, 20-30% of potassium boric, 30-40% of potassium tripolyphosphate, 5-15% of polyoxyethylene alkyl ether, 5-15% of hydroxylamine sulfate, and 0-10% of water. The invention overcomes the disadvantages that processing temperature is too high and foam generated is too much in the conventional pretreatment process of electroplating. The additive agent in the invention has a low processing temperature and excellent degreasing effect. Foam generated is little and disappears fast. Therefore, the additive agent is especially suitable for automatic spray pre-treatment, and is an ideal degreasing agent in the electroplate industry.

Description

technical field [0001] The invention relates to the surface treatment technology of metal materials in the metallurgical industry, in particular to the technology of cleaning and degreasing metal materials by chemical methods other than electrolysis. Background technique [0002] Degreasing and degreasing is one of the most important processes in the current electroplating industry treatment process. The degreasing effect of metal surface directly affects the quality of electroplating. The Coating and Plating Branch of Baosteel Cold Rolled Sheet Plant currently has two tin-plating lines and one chrome-plating line. Among them, the 1# tinning line is a technology introduced from the United States in 1989, and the domestic degreasing agent is currently used. Alkaline cleaning process conditions are: sodium hydroxide 15~40g / L, temperature 70~85℃, current density 20±10A / dm 2 , the highest unit speed 250m / min. From the point of view of usage, the cleaning effect is greatly af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/14C25D5/34
Inventor 周庚瑞黄久贵矫大鹏
Owner BAOSHAN IRON & STEEL CO LTD
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