Forming process for teflon inside and outside linings of chlorine through pipe

Abstract

The invention discloses a forming process for teflon inside and outside linings of a chlorine through pipe. The forming process comprises the following steps that (1) the bottom of an outside lining teflon pipe is subjected to edge overturning by 5 cm-8 cm, the overturned short edge is clamped to be sleeved with a straight pipe from the front end, and the overturned edge is pressed flatly to the upper end of a first flange; (2) a teflon disc is sleeved with the straight pipe from the outer end to be flatly pressed to the upper end of the first flange, and full welding is carried out on the joint positions of the teflon disc and the overturned edge of the outside lining teflon pipe through teflon welding rods; (3) the bottom of an inside lining teflon pipe is subjected to edge overturning by 10 cm-14 cm, the overturned end is sleeved with an edge overturning tool, the overturned end and the edge overturning tool are inserted into the straight pipe from one end of a second flange; (4) acore rod is inserted into the inside lining teflon pipe, the side face connecting positions of the outside lining teflon pipe and the inside lining teflon pipe are subjected to full welding through teflon welding rods; and (5) the core rod and the edge overturning tool are dismounted, welding seams are checked, welding slags are removed, and the surfaces are removed. According to the teflon chlorine through pipe manufactured through the process, steel pieces are completely wrapped with the inside lining teflon pipe and the outside lining teflon pipe, protection is provided, and various seriousstorage and transferring environments in chemical production are met.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a forming process of the tetrafluoro inner lining of a chlorine passage pipe. Background technique [0002] At present, the anti-corrosion pipe fittings used in chemical production are mainly plastic pipes and stainless steel pipes. Plastic pipes are characterized by good corrosion resistance but insufficient strength, while stainless steel pipe fittings have good strength but weak corrosion resistance. The above two pipe fittings cannot It can be used in harsh environment in chemical production. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a molding process for the inner and outer lining of the chlorine pipe with tetrafluoride, so as to solve the above-mentioned multiple defects caused by the prior art. [0004] In order to achieve the above object, the present invention provides the following technical sol...

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Problems solved by technology

[0002] At present, the anti-corrosion pipe fittings used in chemical production are mainly plastic pipes and stainless steel pipes. Plastic pipes are characterized by good corrosion resistance but insufficient strength, while stainless steel pipe fittings have good strength but weak corrosion resistance. The above two pipe fittings cannot Meet the use in harsh environments in chemical production

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