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Lord Fin Tube-Tube sheet welding

Tube sheet welding
 
Heat exchanger is widely used in the national economy, especially in the field of petrochemical industry. The connection modes of heat exchange tube and tubesheet include expansion, welding and expansion welding. Welding is the most commonly used connection mode, and the quality of welded joint often determines the quality and service life of heat exchanger.
 
Connection between heat exchange tube and tube sheet in shell and tube heat exchanger
 
In shell and tube heat exchanger, the heat exchange tube and tube sheet are the only barrier between the tube side and shell side of the heat exchanger. The connection structure and quality between the heat exchange tube and tube sheet determine the quality and service life of the heat exchanger, which is a crucial link in the heat exchanger manufacturing process.
 
Most of the damage and failure of heat exchanger occurs in the joint of heat exchange tube and tubesheet, and the quality of its joint also directly affects the safety and reliability of chemical equipment and devices. Therefore, the connection process of heat exchange tube and Tubesheet in shell and tube heat exchanger has become the most critical control link in the heat exchanger manufacturing quality assurance system. At present, in the process of heat exchanger manufacturing, the connection between heat exchange tube and tube sheet mainly includes welding, expanding, expanding plus welding and bonding plus expanding.
 

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