Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pickling passivation process

A pickling passivation and process technology, which is applied in the coating process of metal materials, etc., can solve the problems of over-corrosion and hydrogen embrittlement, uneven silvery white surface, and incomplete removal of dirt, etc., so as to achieve simple operation and low cost , Improve the effect of corrosion resistance of equipment

Inactive Publication Date: 2015-06-03
山东龙翔实业有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current equipment surface treatment process has low treatment quality, incomplete removal of all kinds of oil, rust, scale, welding spots and other dirt, and is prone to over-corrosion and hydrogen embrittlement. The phenomenon of acid mist is very serious. After treatment, the surface Disadvantages such as uneven silver white

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Example 1: Pickling: Immerse the equipment in the pickling pool at room temperature, apply the pickling paste evenly on the equipment, 1mm thick, control the temperature of the coating surface between 15°C and 25°C, and avoid direct sunlight to avoid After the smeared surface is dry, stay for 30 minutes, then gently brush it with clean water or a stainless steel wire brush until it shows a uniform white acid-etched finish. During the pickling process, the operator must be careful and observe in time to prevent excessive corrosion on the surface of the container. Passivation: put the equipment after pickling into the passivation pool at room temperature, apply passivation paste evenly on the surface of the equipment, 2mm-3mm thick, control the temperature of the coating surface between 15°C-25°C, 30 minutes Check afterward until a uniform passivation film is formed on the surface. Rinse: Rinse the passivated equipment into the cleaning pool, then test any part of the ri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a pickling passivation process. According to the technical scheme, the pickling passivation process comprises the following steps of: immersing equipment into a pickling tank at room temperature, uniformly coating pickling paste on the equipment, stopping for 30 minutes, and then lightly brushing by using clean water or a stainless steel wire brush till uniform white acid etching smoothness appears; placing the pickled equipment into a passivation tank at room temperature, uniformly coating on the surface of the equipment by using the passivation paste, and inspecting after 30 minutes till a uniform passive film is generated on the surface; placing the passivated equipment into a cleaning tank for flushing, then testing any position of a flushing surface by using an acidic litmus test paper so that a pH value is between 6.5 and 7.5, and then wiping or blow-drying by using compressed air. The method provided by the invention is reasonable, practical and easy to operate, can be used for greatly enhancing the corrosion-resistant property of various equipment, reducing the cost and improving the production efficiency and the economic benefit and is suitable for being generally popularized and used.

Description

Technical field: [0001] The invention relates to the technical field of equipment surface treatment, in particular to a pickling passivation process. Background technique: [0002] The current equipment surface treatment process has low treatment quality, incomplete removal of all kinds of oil, rust, scale, welding spots and other dirt, and is prone to over-corrosion and hydrogen embrittlement. The phenomenon of acid mist is very serious. After treatment, the surface Disadvantages such as uneven silver white. Contents of the invention [0003] The purpose of the present invention is to provide a pickling passivation process with reasonable and practical design and good treatment effect aiming at the defects in the prior art. The technical plan is: immerse the equipment in the pickling pool at room temperature, apply the pickling paste evenly on the equipment, and apply it to a thickness of 1mm. After drying, stay for 30 minutes, then gently brush with clean water or a st...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/02C23C22/73
CPCC23G1/02C23C22/73
Inventor 张磊昌
Owner 山东龙翔实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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