Manufacture of fine-type stainless steel plate heat exchanger

A technology of plate-fin heat exchangers and fin heat exchangers, which is applied in manufacturing tools, metal processing equipment, welding equipment, etc., and can solve the problems of heat exchangers that are not resistant to high temperature, corrosion, and high pressure
CN1375374AInactive Publication Date: 2002-10-23NANJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF TECH
Publication Date
2002-10-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The production method of austenitic stainless steel plate fin heat exchanger includes the following steps: part preparation: partition, sealing strip, fin, sealing head and connecting pipe preparation; cleaning before welding; acid pickling to remove oil, dirt and oxide, and using high-pressure water to wash; element assembling and holding; vacuum braze welding, adopting argon arc welding to weldscaling head and connecting pipe, making general assembly; test and inspection, making x-ray inspection, helium leak detection, flow resistance test, pressure test, TUV, ASME and other test and inspection. Said invented process raise the production quality of said stainless steel plate fin heat exchanger, tensile-strength of connector and its service life.
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Description

technical field

[0001] The invention relates to a manufacturing method of an austenitic stainless steel plate-fin heat exchanger. Background technique

[0002] In petrochemical, refrigeration, medicine, atomic energy, aerospace and other fields, aluminum plate-fin heat exchangers cannot meet the requirements of high temperature resistance, high pressure resistance, and corrosion resistance. With its excellent high temperature resistance, high pressure resistance, corrosion resistance, weldability, processability and ductility, austenitic stainless steel plate-fin heat exchanger has become one of the heat exchange equipment with broad development prospects in these fields. However, for the manufacture of stainless steel plate-fin heat exchangers, copper-based brazing filler metals are currently used for brazing. This type of heat exchanger is not resistant to high temperature, high pressure, and corrosion. Contents of the invention

[0003] The object of the present invent...

Claims

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