Unlock instant, AI-driven research and patent intelligence for your innovation.

An on-line continuous external hot-dip galvanizing and internal coating production process for composite welded pipes

A production process and composite welded pipe technology, applied in the direction of hot-dip plating process, metal material coating process, coating, etc., can solve problems such as weak plating and unreasonable coating formula, so as to save maintenance costs and reduce The effect of labor cost and high product quality

Inactive Publication Date: 2018-09-14
HUNAN ADTO IND GRP
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, there are still many defects in the coating process of the above-mentioned documents and other prior art, such as unreasonable coating formula, weak coating, etc.

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
  • An on-line continuous external hot-dip galvanizing and internal coating production process for composite welded pipes
  • An on-line continuous external hot-dip galvanizing and internal coating production process for composite welded pipes
  • An on-line continuous external hot-dip galvanizing and internal coating production process for composite welded pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) Put the pickled raw material black steel strip on the uncoiler, 2) perform shear butt welding through the automatic shear welding machine, 3) enter the horizontal piston feeder to adjust and control the feeding speed, 4) proceed next Seven-roller leveling, 5) engraving or coding treatment, 6) high-pressure water washing on both sides of the cleaning equipment, the pressure is 15Mpa, and the cleaned steel strip flows into the next link. 7) The steel strip is rolled and formed by rolling equipment to obtain pipes; 8) The formed pipes enter the automatic welding equipment, and high-frequency welding is performed on the interface; the welded part flows into the next process, 9) The raised welding part is cut 10) Use the steel pipe curve climbing water plugging process to remove the residual moisture on the inner wall, 11) Use a spray gun to evenly coat the zinc-rich paint on the inner wall of the steel pipe, 12) Then rinse again, 13) Then air ring to dry , so that the su...

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 an online continuous outer hot dip galvanizing and inner plating composite welded pipe production process. The production process is characterized by comprising the steps that the inner wall of a steel tube is coated with zinc-rich paint, and the outer surface of the steel tube is subjected to hot dipping to form a rare earth-zinc alloy layer, so that composite coatings are formed on the inner wall and the outer surface of the steel tube respectively. The steel tube produced through the production process has high coating strength and corrosion resistance, a pipe production process and a galvanizing process are combined into one process, and accordingly production efficiency is greatly improved, and production cost is lowered.

Description

technical field [0001] The invention belongs to the field of coating processing, in particular to the production field of hot-dip galvanizing, and relates to an on-line continuous external hot-dip galvanizing and internal coating and plating composite welded pipe production process. Background technique [0002] At present, there are mainly two kinds of coating processes for industrial steel pipes: hot-dip coating and cold coating, and the coating is generally zinc-aluminum elements. Although zinc-aluminum elements are coated on the inner and outer surfaces of steel pipes, the steel pipes have certain corrosion resistance, but the resistance The corrosion performance is poor, and this kind of steel pipe cannot be used for on-line continuous pipe galvanizing, so that its production efficiency is low, labor intensity is high, and it lacks sufficient competitiveness. [0003] CN102454833A discloses an outer galvanized and inner plastic-coated composite steel pipe. The outer per...

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 Patents(China)
IPC IPC(8): B23P15/00C23C2/06C23C2/38C23C2/02F16L9/14
CPCB23P15/00C23C2/02C23C2/06C23C2/38F16L9/14
Inventor 游炎明
Owner HUNAN ADTO IND GRP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com