{"id":3285,"date":"2026-09-20T08:55:16","date_gmt":"2026-09-20T00:55:16","guid":{"rendered":"https:\/\/sinoak.ru\/?p=3285"},"modified":"2026-09-20T09:05:28","modified_gmt":"2026-09-20T01:05:28","slug":"heat-exchanger-manufacturing-process","status":"publish","type":"post","link":"https:\/\/sinoak.ru\/en\/heat-exchanger-manufacturing-process\/","title":{"rendered":"How Heat Exchangers Are Manufactured"},"content":{"rendered":"\t\t
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How Heat Exchangers Are Manufactured<\/h2><\/div>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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How Heat Exchangers Are Manufactured<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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heat exchanger manufacturing process planning starts with the finished coil specification, then works backward through fin forming, copper tube preparation, tube insertion, expansion, testing and handling. A stable line does not come from one fast machine. It comes from matched process windows, controlled material flow and quality checks that prevent defects from moving to the next operation.<\/p>\n

For the thermal and refrigeration context behind a finned coil, the ASHRAE Handbook<\/strong><\/a> is a useful technical reference. Manufacturing settings still need to be validated with the actual tube, fin, refrigerant circuit and duty conditions of each product.<\/p>\n

The same basic sequence can serve fan coils, unit coolers, condensers, evaporators and industrial equipment. However, tube diameters, fin geometry, coil size, circuit layout, production volume and changeover frequency can change the right equipment configuration completely.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Heat Exchanger Manufacturing Process From Coil to Test<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Production step<\/strong><\/p>\n<\/td>\n

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Main purpose<\/strong><\/p>\n<\/td>\n

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Typical equipment<\/strong><\/p>\n<\/td>\n

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Critical control<\/strong><\/p>\n<\/td>\n<\/tr>\n<\/thead>\n

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Fin forming<\/p>\n<\/td>\n

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Produce fins with the required pitch, collar, louver and surface condition.<\/p>\n<\/td>\n

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Fin press line, fin die, decoiler, feeder and collection system.<\/p>\n<\/td>\n

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Material tracking, feed accuracy, die condition, burr control and fin collection.<\/p>\n<\/td>\n<\/tr>\n

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Tube preparation<\/p>\n<\/td>\n

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Straighten, cut or form copper tube into the required hairpin or straight-tube geometry.<\/p>\n<\/td>\n

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Tube straightening and cutting machine, hairpin bender and tube supports.<\/p>\n<\/td>\n

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Tube length, end condition, bend radius, ovality, scratches and batch identification.<\/p>\n<\/td>\n<\/tr>\n

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Fin pack assembly<\/p>\n<\/td>\n

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Stack fins, side plates and support elements in the correct order before tubes are inserted.<\/p>\n<\/td>\n

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Fin stacking, assembly fixtures and controlled buffers.<\/p>\n<\/td>\n

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Fin orientation, fin pitch, product separation and protection from bending or crushing.<\/p>\n<\/td>\n<\/tr>\n

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Tube insertion<\/p>\n<\/td>\n

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Place tubes through the aligned fin collars without damaging the fin pack.<\/p>\n<\/td>\n

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Tube insertion machine, guides, supports and loading fixtures.<\/p>\n<\/td>\n

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Tube-to-fin alignment, insertion force, tube-end position and prevention of mixed circuits.<\/p>\n<\/td>\n<\/tr>\n

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Tube expansion<\/p>\n<\/td>\n

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Mechanically connect tubes and fin collars to create a repeatable contact interface.<\/p>\n<\/td>\n

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Vertical or horizontal tube expander, mandrels and coil fixtures.<\/p>\n<\/td>\n

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Expansion window, tube projection, fin damage, coil support and dimensional stability.<\/p>\n<\/td>\n<\/tr>\n

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Testing and finishing<\/p>\n<\/td>\n

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Confirm integrity, prepare connections and route the qualified coil to the next operation.<\/p>\n<\/td>\n

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Leak test equipment, pressure test station, handling and marking system.<\/p>\n<\/td>\n

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Test method, traceability, rejection containment and protection during transfer.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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This sequence should be treated as a connected system. A length problem created in tube preparation can become a tube-insertion issue. A scratch caused during coil handling can appear later as a leak-test reject. Process planning must therefore define both each machine and the transfer conditions between machines.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Fin Forming Sets the Geometry of the Coil<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Fin forming is where the air-side structure of the heat exchanger is established. The fin press, die, feeder and material condition must work together to produce a consistent fin pitch, collar profile, louver pattern and burr level. These features influence not only coil performance but also the ability to insert and expand tubes reliably.<\/p>\n