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Anticorrosive wear-resistant manganese-based phosphating liquid and preparation method thereof

A wear-resistant manganese-based phosphorus and wear-resistant manganese-based technology, applied in the field of phosphating solution, can solve the problems of short corrosion resistance time of bare film and more sediment, and achieve the effects of less sediment, longer service life and high pass rate

Active Publication Date: 2015-10-07
HARBIN JINSHIJIA TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the technical problems that the existing manganese-based phosphating solution has a short corrosion resistance time of the bare film and more sediments on workpieces; and provides an anti-corrosion and wear-resistant manganese-based phosphating solution and a preparation method thereof

Method used

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  • Anticorrosive wear-resistant manganese-based phosphating liquid and preparation method thereof

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Experimental program
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specific Embodiment approach 1

[0018] Embodiment 1. In this embodiment, the anti-corrosion and wear-resistant manganese-based phosphating solution is composed of independently packaged A component and B component.

[0019] The A component is composed of 25% phosphoric acid, 30% manganese dihydrogen phosphate, 0.5% sodium nitrate, 0.03% zinc nitrate, 10% nickel nitrate, 0.4% sodium tartrate and the rest of water by mass percentage;

[0020] The B component is composed of 20% phosphoric acid, 40% sodium dihydrogen phosphate, 15% sodium nitrate and the rest of water according to mass percentage.

[0021] The preparation method of anti-corrosion and wear-resistant manganese-based phosphating solution is carried out as follows:

[0022] Component A: add water accounting for one-third of the total mass of water in component A to the reactor, add phosphoric acid, manganese dihydrogen phosphate in turn while stirring, and then add accelerator, zinc nitrate, nickel nitrate and complexing agent , and then add the re...

specific Embodiment approach 2

[0028] Specific embodiment 2. The difference between this embodiment and specific embodiment 1 is that the accelerators in component A and component B are both hydrogen peroxide. Others are the same as in the first embodiment.

[0029] In this embodiment, the titration of the mixed solution of copper sulfate, hydrochloric acid and sodium chloride obtained by treating the bare film with the phosphating solution for 8 to 10 minutes can exceed 7 minutes or more.

specific Embodiment approach 3

[0030] Specific embodiment 3. The difference between this embodiment and specific embodiment 1 is that the accelerators in components A and B are sodium nitrite. Others are the same as in the first embodiment.

[0031] In this embodiment, the titration of the mixed solution of copper sulfate, hydrochloric acid, and sodium chloride obtained by treating the bare film with the phosphating solution for 10 to 12 minutes all exceeds 7 minutes.

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Abstract

The invention discloses anticorrosive wear-resistant manganese-based phosphating liquid and a preparation method thereof, belonging to the field of phosphating liquid. The invention aims at solving the technical problems of relatively short anti-corrosion time of a naked film and relatively much residues of a workpiece treated by the existing manganese-based phosphating liquid. The anticorrosive wear-resistant manganese-based phosphating liquid consists of a component A and a component B in individual package, wherein the component A consists of phosphoric acid, manganese dihydrogen phosphate, an accelerant, zinc nitrate, nickel nitrate, a complexing agent and deionized water; and the component B consists of phosphoric acid, sodium dihydrogen phosphate, an accelerant and deionized water. When in use, the volume ratio of the component A to the component B is (3-10):1; and the accelerant in the component A is the same as that in the component B. The preparation method comprises the following steps: for the component A: sequentially adding the phosphoric acid, manganese dihydrogen phosphate, accelerant, zinc nitrate, nickel nitrate and complexing agent while stirring water, adding the remaining water until the solution is transparent and clear, and discharging and packaging; and for the component B: sequentially adding the phosphoric acid, sodium dihydrogen phosphate and accelerant while stirring water, and adding the remaining water until the solution is transparent and clear. The anticorrosive wear-resistant manganese-based phosphating liquid disclosed by the invention is applied to phosphating treatment.

Description

technical field [0001] The invention belongs to the field of phosphating solution; in particular, it relates to an anti-corrosion and wear-resistant manganese-based phosphating solution and a preparation method thereof. Background technique [0002] At present, there are many manganese-based phosphating solutions on the domestic market, which can be divided into zinc-manganese-based, pure manganese or zinc-manganese-nickel products according to the raw material components; according to the use temperature, they can be divided into high-temperature, low-temperature, and normal-temperature phosphating solutions. In general, they have the effect of anti-corrosion and wear resistance, but there are great differences in various indicators, especially in terms of corrosion resistance: the corrosion resistance time of the bare film is short, and there are more sediments, which adhere to the surface of the workpiece, which affects the appearance and quality of the workpiece. The qua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/18
Inventor 佟明强
Owner HARBIN JINSHIJIA TECH DEV CO LTD