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

Spraying method for metal end of steel-plastic adapter

A technology of steel-plastic conversion joints and metal ends, which is applied in the direction of pipes/pipe joints/fittings, coatings, and devices for coating liquid on the surface, which can solve the problems of metal end coating adhesion, unstable cathode stripping pass rate, and metal Rust on the surface of the tube, discontinuous production, etc., to achieve the effect of improving cathodic stripping ability and adhesion

Pending Publication Date: 2021-08-24
上海乔治费歇尔亚大塑料管件制品有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventor found that in the existing spraying method, due to the high temperature and too long hanging time, the surface of the metal tube at the metal end after degreasing is prone to rusting phenomenon, and the whole production is discontinuous, resulting in the coating adhesion of the metal end, the cathode Unstable stripping pass rate

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spraying method for metal end of steel-plastic adapter
  • Spraying method for metal end of steel-plastic adapter
  • Spraying method for metal end of steel-plastic adapter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 It is a schematic process flow chart of the spraying method for the metal end of the steel-plastic conversion joint according to an embodiment of the present application. This embodiment provides a method for spraying the metal end of the steel-plastic conversion joint, which is carried out according to the following steps:

[0043] Step 100 Sandblasting pretreatment: use an automatic rotary sandblasting machine, select steel shots with a hardness of 40-50HRC, and a particle size of 0.6-1.0mm; : Mix in a ratio of 6, and then sandblast the surface of the metal pipe at the metal end. The cleanliness of the treatment is Sa2.5, and the depth of the anchor pattern is 60-90 microns, so as to remove the rust on the metal end.

[0044] Step 200 Online spray degreasing treatment of the metal end: first, spray and pre-degrease the surface of the metal pipe on the hanging metal end, and mix the degreasing agent and water in the spray pre-degreasing according to the mass ...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a spraying method for a metal end of a steel-plastic adapter, and relates to the field of buried plastic pipelines. The method comprises the following steps of sand blasting pretreatment, metal end online spray degreasing treatment, metal end degreasing agent residue flushing, silanization pretreatment and double-layer fusion bonded epoxy spraying. The spraying method for the metal end of the steel-plastic adapter is an online degreasing, closed rust prevention and baking pretreatment process, through experimental tests, the adhesive force of a double-layer fusion bonded epoxy coating subjected to degreasing agent and silanization pretreatment is kept at the first level after 90-degree bending, the maximum radius is smaller than 5 mm after 48 days of cathodic disbonding, and the maximum radius is smaller than 15 mm after 30 days of cathodic disbanding; and therefore, the adhesive force and the cathodic disbonding capability of epoxy powder after 90-degree bending can be obviously improved by the spraying method.

Description

technical field [0001] The invention relates to the field of buried plastic pipelines, in particular to a spraying method for metal ends of steel-plastic conversion joints. Background technique [0002] At present, in the field of buried plastic pipelines, taking gas and other fluid transmission pipelines as an example, the plastic end of the steel-plastic conversion joint is used to connect to the plastic pipeline, and the metal end is used to connect to the metal pipeline. The metal end of the steel-plastic conversion joint is generally anti-corrosion by spraying fusion-bonded epoxy powder, and the quality of anti-corrosion plays a vital role. [0003] Evaluate the corrosion resistance of the coating according to the standard, and the main indicators are adhesion and cathodic stripping. With the development of the technology market, it has become a trend to bend the straight pipe at the metal end at room temperature at 90°, which also brings challenges to the pre-treatmen...

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): B05D7/14B05D7/24F16L58/04B05D3/00B05D3/10B05D1/06
CPCB05D7/14B05D7/24F16L58/04B05D3/002B05D3/102B05D1/06B05D2202/10B05D2504/00
Inventor 王志伟吴志峰姜锐涛丁永跃娄玉川李瑜
Owner 上海乔治费歇尔亚大塑料管件制品有限公司
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