Abutted seam welding molding Teflon tubular product

A technology of polytetrafluoroethylene pipe and polytetrafluoroethylene, which is applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve the problems of high extrusion molding cost and large size deviation, and reduce processing costs. The effect of reducing equipment cost and reducing dimensional deviation

Inactive Publication Date: 2018-10-12
上海忱润新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a polytetrafluoroethylene pipe formed by seam welding, which is used to solve the problems of high extrusion molding cost and large size deviation of existing polytetrafluoroethylene pipes

Method used

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  • Abutted seam welding molding Teflon tubular product
  • Abutted seam welding molding Teflon tubular product

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Embodiment 1

[0017] Such as figure 1 with 2 As shown, embodiment 1 provides a PTFE pipe formed by seam welding, which is an annular pipe, which is formed by welding the overlapping parts after the plates are crimped and overlapped, and includes the base material along the circumferential direction of the pipe part 1, the first overlapping part 2 and the second overlapping part 3, the base material part 1 is in a "C" shape, and the base material part 1 has a uniform wall thickness, and the material of the base material part 1 is polytetrafluoroethylene. The first overlapping portion 2 and the second overlapping portion 3 are arc-shaped, and the wall thickness of the first overlapping portion 2 and the second overlapping portion 3 is equal to that of the base material portion 1, which is also a structure of equal wall thickness. The first overlapping portion The fixed end of the part 2 and the fixed end of the second overlapping part 3 are respectively fixed on the two open ends of the "C" ...

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Abstract

The invention discloses an abutted seam welding molding Teflon tubular product which is an annular tube. The abutted seam welding molding Teflon tubular product is formed by welding stacked parts after a plate is crimped and overlapped, and comprises a base material part, a first overlap joint part and a second overlap joint part in the annular direction of the tubular product, the base material part is in a C shape and is made of Teflon, the fixed end of the first overlap joint part and the fixed end of the second overlap joint part are fixed to two opening ends of the C shape of the base material part, the free end of the first overlap joint part and the free end of the second overlap joint part are stacked and welded together, the first overlap joint part is made of one of modified Teflon, PFA, MFA or FEP, and the second overlap joint part is made of one of modified Teflon, PFA, MFA or FEP. By means of the abutted seam welding molding Teflon tubular product, the production cost of the Teflon tubular product is reduced, and the dimensional deviations of the tube diameter and wall thickness are reduced.

Description

technical field [0001] The invention relates to the technical field of polytetrafluoroethylene pipes, in particular to a polytetrafluoroethylene pipe formed by seam welding. Background technique [0002] In waste incineration power generation, coal-fired thermal power generation, solid waste medical waste biomass incineration power generation, and flue gas purification treatment systems in industries such as steel, cement and petrochemical industries, a large amount of heat exchange is required to recover and reuse waste heat, so it will A heat exchanger is required. However, due to the acid corrosion of the flue gas below 130 degrees Celsius, most of the metal heat exchangers have a short service life, and the gas-gas heat exchanger made of polytetrafluoroethylene pipes (PTFE pipes) solves the problem. The problem of low service life due to acid corrosion. [0003] Existing PTFE pipes are mostly manufactured by extrusion molding process. Extrusion molding equipment, molds...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L11/04
CPCF16L9/12F16L11/042
Inventor 王均芳
Owner 上海忱润新材料科技有限公司
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