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

Steel-belt occlusion welding plastic-coated composite pipe and preparation method thereof

A composite pipe and plastic-coating technology, which is applied to pipes/pipe joints/pipe fittings, devices for coating liquid on the surface, pipes, etc., can solve the problem of stainless steel pipes or seamless steel pipes being easily corroded, threats to safety production, and short service life And other problems, to achieve the effect of extending the service life, reducing weight, and good flame retardant effect

Inactive Publication Date: 2011-10-19
河北拓安管业有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although stainless steel pipes and seamless steel pipes have high strength, they are expensive to use, and due to the harsh environment in coal mines, stainless steel pipes or seamless steel pipes are easily corroded and have a short service life
Although the cost of PE pipes, PVC pipes or glass steel pipes is low, they have poor antistatic properties and are prone to cracks during construction, posing a certain threat to safe production

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
  • Steel-belt occlusion welding plastic-coated composite pipe and preparation method thereof
  • Steel-belt occlusion welding plastic-coated composite pipe and preparation method thereof
  • Steel-belt occlusion welding plastic-coated composite pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] When manufacturing the steel strip occlusal welded plastic-coated composite pipe provided by the present invention, the first step is to spirally wind the galvanized steel strip 2 on a spiral occlusal machine to form a pipe body 1, so that the adjacent galvanized steel strips 21, 22 are mutually occluded, and at the same time Apply paste to the galvanized steel strip 2 and weld the occlusal joints of the adjacent galvanized steel strips 21 and 22 with a welding machine;

[0024] The second step welds the flanges 3 and 4 at both ends of the pipe body 1;

[0025] The third step is to send the pipe body 1 into the heating furnace and heat it to 90°C;

[0026] In the fourth step, the heated pipe body 1 is sent to the fluidized bed, and the inner and outer walls of the pipe body 1 are sprayed with 40 parts by weight of high-density polyethylene, 15 parts by weight of low-density polyethylene, 5 parts by weight of red phosphorus, and three parts by weight. Antimony oxide syn...

Embodiment 2

[0029] When manufacturing the steel strip occlusal welded plastic-coated composite pipe provided by the present invention, the first step is to spirally wind the galvanized steel strip 2 on a spiral occlusal machine to form a pipe body 1, so that the adjacent galvanized steel strips 21, 22 are mutually occluded, and at the same time Apply paste to the galvanized steel strip 2 and weld the occlusal joints of the adjacent galvanized steel strips 21 and 22 with a welding machine;

[0030] The second step welds the flanges 3 and 4 at both ends of the pipe body 1;

[0031] The third step is to send the pipe body 1 into the heating furnace and heat it to 170°C;

[0032] In the fourth step, the heated pipe body 1 is sent to the fluidized bed, and the inner and outer walls of the pipe body 1 are sprayed with 50 parts by weight of high-density polyethylene, 20 parts by weight of low-density polyethylene, 10 parts by weight of red phosphorus, and three parts by weight. Antimony oxide s...

Embodiment 3

[0035] When manufacturing the steel strip occlusal welded plastic-coated composite pipe provided by the present invention, the first step is to spirally wind the galvanized steel strip 2 on a spiral occlusal machine to form a pipe body 1, so that the adjacent galvanized steel strips 21, 22 are mutually occluded, and at the same time Apply paste to the galvanized steel strip 2 and weld the occlusal joints of the adjacent galvanized steel strips 21 and 22 with a welding machine;

[0036] The second step welds the flanges 3 and 4 at both ends of the pipe body 1;

[0037] The third step is to send the pipe body 1 into the heating furnace and heat it to 250°C;

[0038] In the fourth step, the heated pipe body 1 is sent to a fluidized bed, and the inner and outer walls of the pipe body 1 are sprayed with 60 parts by weight of high-density polyethylene, 25 parts by weight of low-density polyethylene, 15 parts by weight of red phosphorus, and three parts by weight. Antimony oxide syn...

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 belongs to the technical field of coal mine transfer piping and discloses a method for preparing a steel-belt occlusion welding plastic-coated composite pipe. The invention is characterized in that the steel-belt occlusion welding plastic-coated composite pipe comprises a pipe of which the two ends are welded with a flange plate, the pipe is formed by spiral winding galvanized steel belts, the adjacent galvanized steel belts are occluded and welded into a whole, and an inner wall and an external wall of the pipe are respectively provided with an inner plastic-coated layer and an external plastic-coated layer; during the preparation, the galvanized steel belts are spirally wound, and occluded with each other, occlusion seams are welded, the flange plates are welded on the both ends of the pipe, the inner plastic-coated layer and the external plastic-coated layer are coated on the inner wall and the external wall of the pipe; and the pipe is subjected to levelling and curing process. The steel-belt occlusion welding plastic-coated composite pipe provided by the invention has low use cost; and the occluding position of the adjacent galvanized steel belts is airtight and air-proof and serves as a reinforcing rib; and the whole tube strength is increased, thereby being capable of bearing higher negative pressure and having the advantages of high corrosion resistance and antistatic behavior and long service life.

Description

technical field [0001] The invention belongs to the technical field of coal mine conveying pipelines, and in particular relates to a method for preparing a steel strip occlusal welded plastic-coated composite pipe. Background technique [0002] Ventilation systems, gas drainage systems, spraying systems, and water supply and drainage systems in coal mines require a large number of pipelines. Most of the current pipelines use stainless steel pipes, seamless steel pipes, PE pipes, PVC pipes or glass steel pipes. Although stainless steel pipes and seamless steel pipes have high strength, they are expensive to use, and due to the harsh environment in coal mines, stainless steel pipes or seamless steel pipes are easily corroded and have a short service life. Although the cost of PE pipes, PVC pipes or glass steel pipes is low, they have poor antistatic properties and are prone to cracks during construction, posing a certain threat to safe production. Contents of the invention ...

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): B32B33/00F16L9/16B05D1/12B05D7/02
Inventor 邢新春
Owner 河北拓安管业有限公司