Device and method for preparing wear-resistant and anti-rust coating on inner wall of pipe

An anti-rust coating and tube inner wall technology, applied in heating inorganic powder coating and other directions, can solve problems such as uneven coating, and achieve the effects of simple process, high hardness and low porosity

Inactive Publication Date: 2016-03-30
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the preparation process of the drug-type cover, there are still many shortcomings in the formed coating, such as: uneven coating, etc.

Method used

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  • Device and method for preparing wear-resistant and anti-rust coating on inner wall of pipe
  • Device and method for preparing wear-resistant and anti-rust coating on inner wall of pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A device for preparing a wear-resistant and anti-rust coating on the inner wall of a large-diameter pipe, comprising a substrate pipe 1 to be sprayed, an energy absorption pipe 2 is placed outside the substrate pipe 1 to be sprayed, and the wall thickness of the energy absorption pipe 2 is greater than the substrate to be sprayed The wall thickness of the tube 1 is provided with a liner 3 in the base tube 1 to be sprayed, and the axes of the liner 3, the energy absorbing tube 2 and the base tube 1 to be sprayed coincide; The outer wall of the outer pipe is provided with a layer of annular explosive charge layer 4, and the outer wall of the annular explosive charge layer 4 is provided with several adjacent tapered grooves arranged along the axial direction of the inner liner pipe 3. The cone angle of the tapered grooves is 60°, each tapered groove of the annular explosive charge layer 4 is filled with powder to be sprayed 5; the end of the inner liner pipe 3 is equipped w...

Embodiment 2

[0026] A device for preparing a wear-resistant and anti-rust coating on the inner wall of a large-diameter pipe, comprising a substrate pipe 1 to be sprayed, an energy absorption pipe 2 is placed outside the substrate pipe 1 to be sprayed, and the wall thickness of the energy absorption pipe 2 is greater than the substrate to be sprayed The wall thickness of the tube 1 is provided with a liner 3 in the base tube 1 to be sprayed, and the axes of the liner 3, the energy absorbing tube 2 and the base tube 1 to be sprayed coincide; The outer wall of the outer pipe is provided with a layer of annular explosive charge layer 4, and the outer wall of the annular explosive charge layer 4 is provided with several adjacent tapered grooves arranged along the axial direction of the inner liner pipe 3. The cone angle of the tapered grooves is 120°, each tapered groove of the annular explosive charge layer 4 is filled with powder to be sprayed 5; the end of the inner liner pipe 3 is equipped ...

Embodiment 3

[0030] A device for preparing a wear-resistant and anti-rust coating on the inner wall of a large-diameter pipe, comprising a substrate pipe 1 to be sprayed, an energy absorption pipe 2 is placed outside the substrate pipe 1 to be sprayed, and the wall thickness of the energy absorption pipe 2 is greater than the substrate to be sprayed The wall thickness of the tube 1 is provided with a liner 3 in the base tube 1 to be sprayed, and the axes of the liner 3, the energy absorbing tube 2 and the base tube 1 to be sprayed coincide; The outer wall of the outer pipe is provided with a layer of annular explosive charge layer 4, and the outer wall of the annular explosive charge layer 4 is provided with several adjacent tapered grooves arranged along the axial direction of the inner liner pipe 3. The cone angle of the tapered grooves is 90°, each tapered groove of the annular explosive charge layer 4 is filled with powder to be sprayed 5; the end of the inner liner pipe 3 is equipped w...

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Abstract

The invention discloses a device and a method for preparing wear-resistant and rust-proof coatings on the inner walls of large-diameter pipes. The device comprises a to-be-sprayed matrix tube externally sleeved with an energy absorption tube, a lining tube is arranged in the to-be-sprayed matrix tube, an annular explosive loading layer is wound around the external surface of the lining tube, a tapered slot is carved on the surface of the annular explosive loading layer, to-be-sprayed powder is filled in the annular explosive loading layer, and the to-be-sprayed powder is composed of 70-80 parts by weight of WC-Co composite powder and 20-30 parts by weight of a gas generating agent. After one end of the annular explosive loading layer is detonated by a detonating device, the to-be-sprayed powder is driven by explosion to impact the inner wall of the to-be-sprayed matrix tube at a high speed, so that a wear-resistant and rust-proof coating is formed on the internal surface of the to-be-sprayed matrix tube. Compared with conventional methods, a hard wear-resistant and rust-proof coating prepared according to the device and method disclosed by the invention has the characteristics of good bonding strength, low porosity, high hardness, wear resistance, rust prevention, and the like, and can raise the strength of body materials; and a good hard wear-resistant and rust-proof coating can be obtained on the inner wall of a large-diameter pipe.

Description

technical field [0001] The invention relates to the technical field of preparation of wear-resistant and anti-rust coatings, in particular to a device and method for preparing a wear-resistant and anti-rust coating on the inner wall of a large-diameter pipe. Background technique [0002] In modern industry, many mechanical parts often work in high-speed, high-temperature, high-pressure, highly corrosive environments, etc., starting from surface wear, loss, and corrosion, causing failure of parts or the entire equipment, especially in petrochemical, chemical, Equipment and pipeline transportation technology in metallurgy and mining departments require a large number of wear-resistant and anti-rust steel pipes, and steel pipes of ordinary materials cannot meet these requirements. Therefore, researchers actively develop effective surface modification technologies, and apply the best modification methods for different situations, so as to prolong the service life of equipment an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/08B22F7/04B22F3/08
Inventor 李如江周鹏刘晓红刘迎彬高永宏胡晓艳
Owner ZHONGBEI UNIV
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