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Four-function treating liquid for surface of iron or steel

A steel surface and treatment liquid technology, applied in the field of treatment liquid, can solve problems such as low temperature, easy precipitation, unstable product appearance, etc., and achieve the effect of good stability and strong rust removal ability

Inactive Publication Date: 2008-08-20
天津新技术产业园区科茂化学试剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is also the problem of unstable appearance of the product, that is, precipitation is prone to occur after placement, and the low temperature is even worse.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0039] Example 2: Phosphoric acid 70kg, polyvinyl alcohol 0.4kg, zinc oxide 4kg, zinc nitrate 1kg, tartaric acid 2kg, metal cleaning agent 861 2kg, ammonium molybdate 0.4kg, add water.

[0040] The preparation method is as before.

example 3

[0041] Example 3: Phosphoric acid 65kg, polyvinyl alcohol 0.3kg, zinc oxide 3kg, zinc nitrate 0.7kg, tartaric acid 1.8kg, metal cleaning agent 861 1.5kg, ammonium molybdate 0.38kg, add water.

[0042] The preparation method is as before.

[0043] It has been tested as follows:

[0044] Inspection Report

[0045] No. Inspection Item Unit Standard Requirement Experimental Result Passed

[0046] 1# 2# 3#

[0047] 01 Outflow time S Not less than 20 28 Passed

[0048] 02 Impact force cm Not less than 40 50 Passed

[0049] 03 Adhesion level No more than 1 1 Passed

[0050] 04 Solid content % Not less than 35 36.5 Pass

[0051] 05 PH value ---- 1-2 1 qualified

[0052] 06 Drying time h Surface dry not less than 1 0.5 Passed

[0053] Hard work not less than 24 24 pass

[0054] 07 Free acid point 280-380 284 pass

[0055] 08 total acidity point 820-920 876.5 pass

[0056] 09 Dry film thickness um not less than 3 5 P...

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PUM

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Abstract

The invention relates to tetrafunctional surface treatment fluid for steel, the ingredients of which are: phosphoric acid: 60kg, polyvinyl alcohol: 0.2kg, zinc oxide: 2kg, zinc nitrate: 0.5kg, tartaric acid: 1.5kg, metal cleaner: 8611kg, ammonium molybdate: 0.36 kg and the rest of water. The product does not lead to environmental pollution and can guarantee the safety of production operation. Scientific material proportion ensures the product is limpid and has good stability. The invention has excellent derusting ability and can dispose of scale cinder attached on the surface of the steel, prevent an electrolyte from expansion and effectively control filiform corrosion under a film and corrosion in the breakage of a film coating. As for the usage method, dipping, spraying, brushing and wiping are all allowed. Simplification ensures that the operation process can be completed at one time.

Description

technical field [0001] The invention belongs to a treatment liquid for removing and preventing rust on steel surfaces and a preparation method thereof, in particular to a four-function steel surface treatment liquid. Background technique [0002] Environmental protection and energy saving are the common theme in the world. For this reason, in the field of rust removal and anti-rust on steel surfaces, everyone is constantly researching. How can we not only ensure the safety of workers, but also reduce production and operation costs? At present, the actual situation is that most of them still use the traditional method, that is, a series of processes such as washing with hydrochloric acid or sulfuric acid and water, and then phosphating. The liquid contains heavy metals, nitrite and other toxic and harmful substances. The even more backward method is to use sandblasting or shot blasting to treat the rust on the steel surface. The production process is extremely cumbersome and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/40C23G1/02
Inventor 曹英来
Owner 天津新技术产业园区科茂化学试剂有限公司
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