Pickling solution containing compounded passivating agent, and preparation method thereof
A technology of pickling liquid and passivating agent, which is applied in the field of cleaning stainless steel castings, can solve the problems of no specific implementation plan, etc., and achieve the effects of small acid mist, large amount of pickling, and shortening the frequency of pickling
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0019] Embodiment 1: sample preparation
[0020] The pickling solution containing passivating agent used in the following examples is prepared by the following method: 1000kg concentration is 50% industrial nitric acid mixed with 200kg40% hydrofluoric acid, after stirring evenly, add corrosion inhibitor (by Uro Tropin 40kg, sulfamic acid 40kg, sodium sulfamate 100kg one or a combination of several) and brightener (composed of triethylene glycol 20kg, coumarin, saccharin, glycerin 10kg each and alkane surfactant 40kg) or several mixed compositions), and finally add 410kg of water into the solution and stir evenly. Placed at 25°C, reacted for 24 hours. The final solution was light yellow-green and clear. The preparation is complete and ready for use.
Embodiment 2
[0021] Embodiment 2: sample preparation
[0022] The pickling solution containing passivating agent used in the following examples is prepared by the following method: the industrial nitric acid of 1000kg50% is mixed with the hydrofluoric acid of 150kg40%, after stirring, add corrosion inhibitor successively (by urotropine 2.0 kg, sulfamic acid 2.0kg, sodium sulfamate 1.0kg, one or several mixtures) and brightener (composed of triethylene glycol 1.0kg, coumarin 1.0, saccharin 0.4kg, glycerin 0.4g and alkanes surface active 1.0kg of one or several mixtures), and finally add 840kg of water into the solution and stir evenly. Placed at 25°C, reacted for 24 hours. The final solution was light yellow-green and clear. The preparation is complete and ready for use.
Embodiment 3
[0023] Example 3: Sample Preparation
[0024] The pickling solution containing passivating agent used in the following examples is prepared by the following method: 1000kg concentration is 50% industrial nitric acid and 300kg40% hydrofluoric acid are mixed, after stirring, add corrosion inhibitor (by Uro Tropin 10kg, sulfamic acid 3kg, sodium sulfamate 2kg (one or several mixtures) and brightener (1.2kg of triethylene glycol, 0.5kg of coumarin, 0.5kg of saccharin, 1kg of glycerin and alkanes surface active 1.5kg of one or several mixtures), and finally add 680kg of water into the solution and stir evenly. Placed at 25°C, reacted for 24 hours. The final solution was light yellow-green and clear. The preparation is complete and ready for use.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com