Development of Technology for Automated Non-Destructive Quality Testing of Soldered Joints of Heat Exchangers

This article discusses the issues of creating a technology for non-destructive quality testing of soldered joints of heat exchangers for the development of an automated non-destructive testing system. The object of testing (having a complex geometric shape) is described, the relevance of the development and the problems of manufacturing and testing by existing testing methods are substantiated. Typical defects (cold lap, dry joint) that occur in soldered joints during the manufacture of heat exchangers are described. Applicable methods of non-destructive testing (pulse-echo and through-transmission methods) are analyzed, existing solutions are analyzed, advantages and disadvantages of each of the methods are identified. The problems of manual implementation of ultrasonic testing methods are analyzed, the need to automate the testing process is substantiated, and solutions to the main issues that arise when creating automated non-destructive testing systems for objects of complex geometric shape are presented.