Ultrasonic degreasing filming agent used before precision nickel and nickel alloy workpiece spraying coating, and production method thereof

Abstract

The invention discloses an ultrasonic degreasing filming agent used before precision nickel and nickel alloy workpiece spraying coating. The ultrasonic degreasing filming agent comprises following raw materials, by weight, 6 to 12% of nitric acid, 3 to 6% of nickel nitrate, 3 to 6% of sodium fluoride, 2 to 4% of hexafluorozirconic acid, 1 to 3% of hexafluorotitanic acid, 1 to 2% of phytic acid, 4 to 8% of Y-73 ultrasonic cleaning low-foaming surfactant, 1 to 2% of penetrant JFC, and the balance water. A production method comprises following steps: weighed water is delivered into a reaction vessel; a stirrer is turned on, and rotating speed is controlled to be 120r / min; weighed nitric acid, nickel nitrate, sodium fluoride, hexafluorozirconic acid, hexafluorotitanic acid, phytic acid, Y-73 ultrasonic cleaning low-foaming surfactant, and penetrant JFC are delivered into the reaction vessel successively and slowly, wherein mass concentration of nitric acid is 85%, mass concentration of hexafluorozirconic acid is 50%, mass concentration of hexafluorotitanic acid is 40%, and mass concentration of phytic acid is 50%; stirring is carried out until a transparent solution is obtained; and the transparent solution is collected and packaged.

Description

technical field [0001] The invention relates to a production method of an ultrasonic degreasing film forming agent for precision nickel and nickel alloy workpieces before spraying and coating, especially a non-corrosive ultrasonic cleaning equipment, which can quickly and completely remove nickel and nickel alloy workpieces remaining after high-speed mechanical polishing The invention relates to an ultrasonic degreasing film forming agent and a production method before spraying a large amount of polishing paste adherents (wax) on precision nickel and nickel alloy workpieces. Background technique [0002] After precision nickel and nickel alloy workpieces are polished by high-speed machinery, a large amount of waxy polishing powder adherents will remain on the surface, which needs to be cleaned with ultrasonic waves before spraying and coating. The main mechanism of ultrasonic cleaning is that the tiny bubble nuclei in the chemical cleaning agent vibrate, grow and burst sudde...

AI Technical Summary

Problems solved by technology

However, due to the mismatch of additives and corrosion inhibitors used in existing ultrasonic cleaning agents, the following problems exist:

[0004] 2. The cleaning speed is slow, the temperature condition is high, and sometimes the problem of incomplete cleaning occurs;

[0005] 3. After the workpiece is cleaned, sometimes over-corrosion occurs, not only the surface is blackened, but the true color of the metal substrate cannot be exposed, and the surface finish of the workpiece is damaged