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Phosphatizing liquid for use in automobile, preparing method and phosphatizing treatment process thereof

A technology of phosphating treatment and phosphating solution, which is applied in the coating process of metal materials, etc., can solve the problems of expensive imported phosphating solution, increase in automobile manufacturing costs, general technical performance indicators, etc., and achieve self-protection and compatibility Excellent, residue reduction, and the effect of overcoming environmental pollution

Inactive Publication Date: 2006-11-22
张清学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the phosphating solutions for automobile steel sheets in my country rely on imports, and the imported phosphating solutions are expensive, which increases the cost of automobile manufacturing; the phosphating solutions developed by domestic manufacturers in recent years have general technical performance indicators, and are basically used in building materials such as galvanized nickel or color coating. Production line application; and most of the existing phosphating solution formulations contain nitrite accelerators, which produce NO X polluted environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The phosphating solution for automobiles of the present invention is a composition mainly composed of phosphoric acid, nitric acid, and zinc oxide. Amine 0.05, the rest is water.

[0022] The preparation method of the phosphating solution for automobiles of the present invention is: get 2 / 3 of deionized water, add phosphoric acid, then add nitric acid, zinc oxide, sodium carbonate, aminoamine, organic accelerator respectively in order, and fully Stir, after sedimentation and filtration, add the rest of the water, let it stand for 24 hours to ripen and then use it.

[0023] The technique of using the phosphating solution phosphating treatment of automobile cold-rolled sheet and galvanized sheet of the present invention is:

[0024] The phosphating solution is 60ml / l, the temperature is 46C, and the time is 4 minutes; the operation method is dipping treatment.

[0025] The technique of using the phosphating liquid phosphating treatment automobile zinc-nickel alloy plate...

Embodiment 2

[0028] The phosphating solution for automobiles of the present invention is a composition based on phosphoric acid, nitric acid, and zinc oxide, and its component composition weight percent is: phosphoric acid 16, nitric acid 26, zinc oxide 12, sodium carbonate 8, organic accelerator 0.5, amino Amine 0.03, the rest is water.

[0029] The preparation method of the phosphating solution for automobiles of the present invention is: get 2 / 3 of deionized water, add phosphoric acid, then add nitric acid, zinc oxide, sodium carbonate, aminoamine, organic accelerator respectively in order, and fully Stir, after sedimentation and filtration, add the rest of the water, let it stand for 24 hours to ripen and then use it.

[0030] The technique of using the phosphating solution phosphating treatment of automobile cold-rolled sheet and galvanized sheet of the present invention is:

[0031] The phosphating solution is 70ml / l, the temperature is 47°C, and the time is 5 minutes; the operation...

Embodiment 3

[0035] The phosphating solution for automobiles of the present invention is a composition mainly composed of phosphoric acid, nitric acid, and zinc oxide. Amine 0.05, the rest is water.

[0036] The preparation method of the phosphating solution for automobiles of the present invention is: get 2 / 3 of deionized water, add phosphoric acid, then add nitric acid, zinc oxide, sodium carbonate, aminoamine, organic accelerator respectively in order, and fully Stir, after sedimentation and filtration, add the rest of the water, let it stand for 24 hours to ripen and then use it.

[0037] The technique of using the phosphating solution phosphating treatment of automobile cold-rolled sheet and galvanized sheet of the present invention is:

[0038] The phosphating solution is 80ml / l, the temperature is 50°C, and the time is 5 minutes; the operation method is dipping treatment.

[0039] The technique of using the phosphating liquid phosphating treatment automobile zinc-nickel alloy plat...

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PUM

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Abstract

The invention discloses a vehicle phosphatising liquid preparation method and phosphatising disposal technology in the cold rolled sheet, galvanized board, zinc-nickel alloy coating board phosphatising disposal of vehicle coating technology, which comprises the following parts: 14-18 percent phosphoric acid, 22-26 percent nitrate, 10-14 percent zinc oxide, 2-12 percent sodium carbonate, 0.2-0.4 percent organic accelerant, 0.03-0.07 percent amino amide. The preparing method comprises the following steps: weighing two thirds deionized water; adding phosphoric acid, nitrate, zinc oxide, sodium carbonate, amino amide and organic accelerant in sequence; stirring completely; filtering; depositing; supplementing; stewing; for 24 h; ripening.

Description

technical field [0001] The invention relates to a phosphating solution for automobiles, a preparation method and a phosphating treatment process thereof, and is especially suitable for the phosphating treatment of cold-rolled sheets, galvanized sheets, and zinc-nickel alloy plated sheets in the automobile coating process. Background technique [0002] The phosphating treatment of the steel plate is an important process in the automobile coating process. Its purpose is to improve the corrosion resistance of the steel plate and the adhesion with the coating. On the surface of the phosphating film, the porous structure of the phosphating film increases the area of ​​the substrate, which increases the connection surface between the coating and the substrate, and the chemical interaction between the unsaturated resin in the paint layer and the phosphate crystals also greatly enhances its bonding force. , In addition, phosphating film provides a stable non-conductive isolation lay...

Claims

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Application Information

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IPC IPC(8): C23C22/48
Inventor 张清学吕今强郝晓燕张仲波赵振峰张敬民
Owner 张清学
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