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Method and device for welding thin-wall micropipes of fluoroplastic heat exchanger

A technology of fluoroplastic heat exchanger and plastic thin wall, which is applied to the welding device for realizing the above method, the production of fluoroplastic (FEP) heat exchanger, and the production of fluoroplastic (FEP) heat exchanger that can be melt-processed. It can solve the problems of complicated and time-consuming welding procedures, and achieve the effects of protecting health, reducing welding processing costs, and strong operability

Active Publication Date: 2014-08-27
ZHUZHOU HONGDA POLYMER MATERIALS
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Problems solved by technology

[0010] The purpose of the present invention is to propose a welding process for thin-walled microtubes of fluoroplastics (FEP) heat exchangers, which can effectively The solution to the thin-walled microtubes of fluoroplastic (FEP) heat exchangers is that the welding process is complicated, time-consuming and many problems by using a single tube fusion welding method

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  • Method and device for welding thin-wall micropipes of fluoroplastic heat exchanger

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] As can be seen from the accompanying drawings, the present invention relates to a welding method for thin-walled microtubes of fluoroplastic (FEP) heat exchangers, using a metal bath as a heat carrier to heat fluoroplastic thin-walled microtubes, placing a welding mold in the metal bath, and The tubes are placed in the welding mold, so that the thermal expansion of the fluoroplastic end plate in the welding mold is hindered, and the radial pressure is superimposed on the pressure of the thermal expansion of the expansion core inserted in the fluoroplastic thin-walled microtube, so that the fluoroplastic end plate in the molten state The tubes composed of fluoroplastic thin-walled microtubes are fused together under pressure to achieve the purpose of welding.

[0039] Further, the process of the metal bath welding method comprises the following st...

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Abstract

The invention discloses a method for welding thin-wall micropipes of a fluoroplastic heat exchanger, which is characterized in that the fluoroplastic thin-wall micropipes are heated by metal bath as a heat carrier; a welding mold is placed in the metal bath; row tubes are placed in the welding mold to enable thermal expansion of a fluoroplastic end plate in the welding mold to be hindered in order to generate radial pressure; and the radial pressure is superposed with the pressure from the thermal expansion of an expansion core that is inserted in the fluorplastic heat exchanger, so that under molten state, the fluoroplastic end plate and the row tubes composed of the fluoroplastic thin-wall micropipes are molten together, and the welding purpose is achieved.

Description

technical field [0001] The invention relates to a manufacturing method of chemical materials, in particular to a manufacturing method of a melt-processable fluoroplastic (FEP) heat exchanger. It is mainly used in the production of fluoroplastic (FEP) heat exchangers. The invention also relates to a welding device implementing the above method. Background technique [0002] Fluoroplastic (FEP) heat exchangers are anti-corrosion heat exchange equipment developed in recent years for use in strong corrosive media. Due to its excellent chemical stability (resistance to all acids, alkalis, salts and organic solvents) and non-sticky surface, wide service temperature (-200 ~ 205 ℃) and excellent aging resistance, the outdoor service life is as long as 20 years The above are a class of excellent anti-corrosion materials. [0003] The fluoroplastic (FEP) heat exchanger is made of thin-walled micro-tubes (diameter ≤ Φ10mm, tube wall thickness ≤ 0.5mm), small in size and light in wei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/02F28F21/06
Inventor 朱基贵孙生钧尹武涛
Owner ZHUZHOU HONGDA POLYMER MATERIALS
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