Strong acid metal surface phosphor passivation and anti-rust agent and its production method

A metal surface, strong acid technology, applied in the direction of metal material coating process, etc., can solve the problem of no degreasing and descaling, phosphating passivation, no conversion into phosphorus passivation film, etc., to improve product quality, reduce The effect of improving energy consumption, corrosion resistance and rust resistance

Inactive Publication Date: 2007-12-12
陈历泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product has no effect of degreasing, descaling, phosphating and passivation, and it has not been transformed into a phosphorus passivation film layer

Method used

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Embodiment Construction

[0012] 1. Discussion on the mechanism of degreasing, descaling and phosphating passivation antirust agent for strong acidic metal surface

[0013] 1. Study the mechanism of oil emulsification and dispersion, iron oxide scale conversion into phosphorus passivation; use organic acid and active agent combined with inorganic acid to emulsify oil. Phosphoric acid is in contact with iron oxide scale to produce a chemical reaction and convert it into an iron phosphate film. The phosphorus passivation route is mainly based on covalent bonding, that is, chemical adsorption, and ionic bonding, or physical adsorption, is the secondary phase combination; finely formulated additives, the main The effect is that phosphorus passivation occurs on the surface of metal ions and continues to maintain phosphorus passivation to achieve the purpose of anti-corrosion. The key to the process is to control the complex reaction, combine the formula and determine the process method.

[0014] 2. The use ...

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PUM

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Abstract

The invention relates to a kind of strong acidic phosphorous passive antirust agent for metal surface and the preparation method. The comprised raw material and their weigt proportion are as follows: phosphate 22- 66 uints, additive 8- 12 units, acidc ferric manganese phosphate 15- 45 uints, metal salt such as zinc nitrate, aluminum nitrate, nickel nitrate or nickel sulfate, calcium sulphate or calcium sulphate, silica dioxide, 12- 22 uints, OP or cleaning agent 2- 3 uits, clean water 14- 60 untis. The method comprises following steps: (1) feeding distilled water or soft water into autoclave; (2) adding ferric manganese phosphate into autoclave, stirring and adding zinc nitrate, nickel nitrate or nickel sulfate, silica dioxide and calcium chloride into it, reacting and getting semi- solid pasty; (3) dropping phosphate, adding additive, OP or cleaning agent, getting finished product when the liquid is clear. The invention is characterized in that it is smelless during immersion, spraying and coating below 120 Deg. C or at normal temperature, the binding force is the first grade, saves energy consumption by more than 80%, cost is reduced above 70%, no three waste discharge and non toxic, and the product is widely used.

Description

technical field [0001] The invention relates to a strong-acid metal surface phosphorus passivation antirust agent, which is used for metal surface to replace pickling, sandblasting, spraying, shot peening and grinding processes, and completely descales and degreases. The invention also relates to a process for the production of this product. Background technique [0002] All kinds of metal materials (plates, wires) no matter whether they are hot-rolled or cold-rolled before deep processing, all kinds of metal products must be coated with paint, electroplating, hot-dip galvanizing, spraying, aluminum spraying, cold drawing, etc. Pre-treatment process, namely degreasing, descaling, phosphating anti-rust, hot-dip galvanizing, tin plating, chrome plating, nickel plating, steel plating, gold plating, silver plating, aluminum spraying, and plastic spraying, are currently adopted at home and abroad for metal surface pretreatment. The treatment process is pickling with sulfuric aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/07C23G1/02C23G5/00
Inventor 陈历泽陈代胜
Owner 陈历泽
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