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

Chemical composite steel pipe welding process

A composite steel pipe and welding process technology, applied in welding equipment, manufacturing tools, metal processing, etc., can solve the problems of losing the protective effect of the inner plastic layer, inconvenient connection of the inner plastic pipe, and damage of the inner plastic pipe, etc., to achieve The effect of simple structure, convenient connection and convenient operation

Active Publication Date: 2014-06-18
THE SIXTH CONSTR CO LTD OF CHINA NAT CHEM ENG
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are serious problems in ordinary chemical composite steel pipes: the connection of the inner plastic pipe is very inconvenient, and the use of welding will cause the inner plastic pipe to be damaged due to high temperature, thus losing the protective effect of the inner plastic layer and affecting the quality of the pipe

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

[0040] 1) Pretreatment of steel pipe

[0041] The steel pipe used in this process includes steel pipe body, liner pipe and stainless steel pipe. The steel pipe body is an ordinary carbon steel pipe; the lining pipe is a plastic pipe, which is closely attached to the inner wall of the steel pipe body; the stainless steel pipe is arranged at the welding place of the steel pipe body.

[0042] 2) Cleaning of steel pipe welds

[0043] (1) Rinse the welding place of the composite steel pipe to be welded with high-pressure water;

[0044] (2) Make cleaning solution according to the following parts by weight: sodium alkyl aryl sulfate: 2 parts, sodium tripolyphosphate: 1 part, glycine: 3 parts, anhydrous sodium sulfate: 0.5 part, polyethylene glycol octylbenzene Base ether: 0.01 parts, anhydrous sodium bicarbonate: 0.05 parts, disodium edetate: 0.5 parts, purified water: 50 parts;

[0045] (3) Put the composite steel pipe workpiece to be welded processed in step 2 into the cleaning...

Embodiment 2

[0054] 1) Pretreatment of steel pipe

[0055] The steel pipe used in this process includes steel pipe body, liner pipe and stainless steel pipe. The steel pipe body is an ordinary carbon steel pipe; the lining pipe is a plastic pipe, which is closely attached to the inner wall of the steel pipe body; the stainless steel pipe is arranged at the welding place of the steel pipe body.

[0056] 2) Cleaning of steel pipe welds

[0057] (1) Rinse the welding place of the composite steel pipe to be welded with high-pressure water;

[0058] (2) The cleaning solution is made into the following parts by weight: sodium alkyl aryl sulfate: 4 parts, sodium tripolyphosphate: 2 parts, glycine: 4.5 parts, anhydrous sodium sulfate: 1 part, polyethylene glycol octylbenzene Base ether: 2 parts, anhydrous sodium bicarbonate: 0.8 parts, disodium edetate: 1 part, purified water: 50 parts;

[0059] (3) Put the composite steel pipe workpiece to be welded after step 2 into the cleaning solution and ...

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 relates to a chemical composite steel pipe welding process, which comprises the following steps of steel pipe pretreatment, steel pipe welding part cleaning, welding and sterilization treatment after welding. The chemical composite steel pipe welding process comprises the following steps that firstly, a small section of stainless steel pipe is welded at the end part of a steel pipe body, then, a plastic pipe is tightly pasted with the inner wall of the steel pipe body, during the welding of two sections of chemical composite pipes, firstly, a small section of inner layer plastics at end parts of the respective steel pipe body is removed, the stainless steel pipe is exposed out, the welding is carried out according to the welding process of the stainless steel pipe, in the welding process, the heat transmission reduction measures are adopted, and the inner layer plastic pipe with a certain distance from the welding position is enabled not to be damaged through overheating. The joint parts are made of stainless steel materials, and the anti-corrosion treatment is not needed. The chemical composite steel pipe welding process has the advantages that the structure is simple, and the operation is convenient, so the connection of the chemical composite steel pipe is very convenient, in addition, the deformation of the steel pipe during the welding can be effectively prevented, and the work efficiency is improved.

Description

technical field [0001] The invention belongs to a metal welding method, in particular to a chemical compound steel pipe welding process. Background technique [0002] Common chemical composite steel pipes are made of steel pipes lined with plastic pipes. The purpose of lining plastic pipes is to prevent electrochemical corrosion and scaling on the inner wall of the pipe, thereby prolonging the service life and avoiding the pipe from polluting the fluid in the pipe. However, there are serious problems in ordinary chemical compound steel pipes: the connection of the inner plastic pipe is very inconvenient, and the use of welding will cause the inner plastic pipe to be damaged due to high temperature, thereby losing the protective effect of the inner plastic layer and affecting the quality of the pipe. Contents of the invention [0003] Aiming at the above-mentioned deficiencies, the present invention discloses a chemical composite steel pipe welding process, the steps of whi...

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): B23K9/16B23K9/235C21D9/08
CPCB23K9/173B23K9/235B23K2101/06C21D9/08
Inventor 简逖董建国李夕林
Owner THE SIXTH CONSTR CO LTD OF CHINA NAT CHEM ENG