What causes vertical cracks in the weld between the tube sheet and the shell of a tubular heat exchanger? (Equipment pressure: 4.0 MPa, temperature: 400°C)
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What causes vertical cracks in the weld between the tube sheet and the shell of a tubular heat exchanger? (The shell side pressure of the equipment is 4.0 MPa, the tube side pressure is 0.1 MPa; the tube side temperature is 400°C, and the shell side temperature is 245°C.)
High temperature and high pressure; this may be caused by stress.
What materials are used for the equipment, and what is the heat exchange medium?
The material of the tube sheet and the shell is different
Is there undercut near the welding crack? No preheating or post-heating was carried out before the repair welding. The residual stress generated has not been eliminated. Cracks formed during use. If you are looking for help, please leave your phone number or email address. To facilitate long-term communication and cooperation.