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Steel lining tetrafluorohydrazine cage hoop equal steel compound technology

A technology of lining with PTFE cage hoop and composite process, applied in the direction of damage protection, branch pipeline, pipeline anti-corrosion / anti-rust protection, etc. Good corrosion effect and good composite effect

Pending Publication Date: 2019-04-19
江苏宣臻防腐工程有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a steel-lined PTFE cage hoop and other steel composite process, which solves the problems of the existing PTFE liner falling off, drumming, suction, and expansion deformation

Method used

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  • Steel lining tetrafluorohydrazine cage hoop equal steel compound technology
  • Steel lining tetrafluorohydrazine cage hoop equal steel compound technology
  • Steel lining tetrafluorohydrazine cage hoop equal steel compound technology

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0033] refer to Figure 1-4 , a steel composite process such as a steel-lined PTFE cage hoop, comprising the following process steps,

[0034] S1, shell production, according to the geometric shape of the workpiece, make the workpiece shell, rubber inner membrane and qualitative inner mold;

[0035] S2, making a cage hoop, preparing a ring-shaped steel plate matching the inner wall of the workpiece shell, and opening holes equidistantly on the circumferential surface of the ring-shaped steel plate;

[0036] S3, welding a plurality of ring-shaped steel plates to the inner wall of the workpiece shell at equal distances;

[0037] S4, the first inspection, the welding ...

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Abstract

The invention belongs to technical field of steel lining tetrafluorohydrazine cage hoop equal steel compound technologies, and particularly discloses a steel lining tetrafluorohydrazine cage hoop equal steel compound technology. For solving the problems of PTFE lining layer falling, bulking and dented suction and expansion deformation in the prior art, the technology comprises the following technological steps that die pressing is carried out, a workpiece shell is pressurized and filled with water through a water pressure connector, and the pressure is made to reach a set highest value and kept for 3-4h; filler is expanded, and tetrafluorohydrazine powder is injected into a gap in S6; sintering is carried out, and furnace charging and sintering are carried out; preheating is carried out for 6h in a furnace; a tetrafluorohydrazine layer and a metal part reach the synchronous thermal change coefficient, the temperature is gradually increased, the temperature increasing process is slowlycarried out in order, finally, the temperature reaches 385 DEG C, heat preservation is carried out for 6h, then, the temperature is slowly decreased in a grading mode, and the whole sintering processspends 36h. Steel lining tetrafluorohydrazine cage hoop pipeline equipment manufactured through the equal steel compound technology is good in corrosion resistance effect, good in compound effect, free of automatic falling, and free of bulking and dented suction and expansion deformation

Description

technical field [0001] The invention relates to the technical field of steel composite technology such as steel-lined tetrafluoro cage hoops, and in particular to a steel composite technology such as steel-lined tetrafluoro cage hoops. Background technique [0002] Special pipelines for strong corrosion, high and low temperature and negative pressure fields require corrosion-resistant and high-temperature resistant pipelines. The existing pipelines have poor integrity and weak adsorption capacity of the internal corrosion-resistant layer; polytetrafluoroethylene (abbreviated as PTFE), Commonly referred to as "non-stick coatings" or "easy-to-clean materials". This material is resistant to acid and alkali, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can be used for lubrication, and it has also become an ideal coating fo...

Claims

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Application Information

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IPC IPC(8): B29C43/18B29C43/32B29C43/58F16L41/02F16L58/18B29K27/18
CPCF16L41/021F16L41/026F16L58/188B29C43/006B29C43/183B29C43/32B29C43/58B29C2043/3238B29C2043/585B29C2043/5808B29K2027/18
Inventor 李传红吴三发李艳龙李俊俊
Owner 江苏宣臻防腐工程有限公司
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