Issues regarding the inspection of the bonding rate for stainless steel composite plate equipment
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According to the unified regulations set by the relevant department in charge of equipment, for equipment made of stainless steel composite panels, additional technical requirements are specified when post-weld heat treatment is carried out: after the heat treatment, it is necessary to check the adhesion rate between the stainless steel and carbon steel； Fellow forum users, do you think this is reasonable? In our design process, we generally check the lamination rate of the purchased composite steel plates
HG/T20581, page 55: Articles 3, 4, and 5 deal with the ultrasonic testing of composite panels (here, ultrasonic testing refers to the assessment of the bond strength, right?) ). Design institutes generally design according to the 20580 bound volume. If it’s a theoretical analysis, I can’t help you; just wait for an expert to provide an answer~
We have encountered situations where the medium and operating conditions were quite special and the equipment was critical; in such cases, we checked the adhesion rate after heat treatment, but this was done on a sample basis rather than across all units. Conducting inspections on all units would take a long time and require significant labor costs. It is recommended to discuss with the design institute the implementation of proportional spot checks on key areas.