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

Outer coating for an underground piping member made from iron, coated piping member and method for depositing the coating

An external coating and buried technology, which is applied in the direction of coating, superimposed layer plating, metal material coating process, etc., can solve the problems of sanitation and environment that are no longer in compliance

Inactive Publication Date: 2015-03-11
圣戈班穆松桥
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hygienic and environmental aspects of such coatings no longer meet the increasing demands

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
  • Outer coating for an underground piping member made from iron, coated piping member and method for depositing the coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] This coated pipe 1 comprises a pipe 7 and an outer coating 9 located between the soil 3 and the pipe 7 , the outer coating 9 is advantageously distributed over the pipe 7 such that the pipe 7 is insulated from the ground 3 .

[0045] The pipe piece 7 is made of iron, advantageously of ductile cast iron. The pipe member 7 is, for example, a pipe. In the example shown, the tube 7 extends along a longitudinal direction L perpendicular to the plane of FIG. 1 . Only a part of the area of ​​the pipe 7 is shown in FIG. 1 , the remaining area can be deduced without difficulty from the part shown.

[0046] The fluid 5 flows along the longitudinal direction L into the pipe 7 . There may be an inner coating (not shown) on the inner wall of the pipe 7 to insulate the fluid 5 from the pipe 7 .

[0047] The outer coating 9 comprises a first layer 11 and a second layer 13 located on said first layer 11 .

[0048] Said first layer 11 is porous and is advantageously deposited by arc...

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
Login to View More

Abstract

An outer coating (9) for an underground piping member (7) made from iron, in particular cast iron, the outer coating comprising a first porous layer (11) and a second porous layer (13) disposed on the first layer and capable of plugging the pores of the first layer, the outer coating being characterised in that: the first layer comprises substantially pure zinc or an alloy or pseudo-alloy of zinc, the alloy or pseudo-alloy comprising, in terms of mass, at least 50% zinc, and preferably between 0.5% and 40% aluminium, and the second layer comprises a one-component paint in the aqueous phase made from at least one synthetic resin emulsion, dispersed or dissolved in water. A corresponding coated piping member and method for depositing the coating.

Description

technical field [0001] The invention relates to an outer coating of the type for buried pipes made of iron, in particular cast iron, comprising a first porous layer and a second porous layer, the second porous layer It is arranged on the first layer and can block the micropores of the first layer. [0002] The invention also relates to a pipe coated with the outer coating, and a method for depositing the coating on the pipe. Background technique [0003] "Pipe fittings" refers to "pipes" and various fittings, such as elbows, connectors, etc., for example in the field of water facilities. [0004] A method of manufacturing steel pipe coatings is known from document JP-A-23010357. This document envisages deposition by spraying sacrificial zinc / aluminum alloys followed by deposition of epoxy. Obviously the resin layer must be leak-tight. The method is suitable for the coating of pipes made of iron or steel in "dry areas", and therefore of course for the coating of overhead ...

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): C23C4/08C23C4/18C23C28/00F16L58/10
CPCC23C4/18C23C28/00F16L58/08C23C4/08F16L58/1072C23C4/16C23C4/04F16L58/04B05D7/146F16L58/02
Inventor 奥利维尔·邦迪勒G·努艾尔J-M·佩杜图
Owner 圣戈班穆松桥