jimbod20
Aerospace
- Sep 8, 2010
- 75
I have a machined aluminum 6061 housing I need to pressure test for leaks and want recommendations/guidance to seal open external ports. Pressure test is governed by customer specifications. Pressure test is 75 psid with air in water for 10 minutes.
We machine cores/passages to make all internal fluid path connections, then install threaded plugs with epoxy adhesive in four of the machined passages to seal external holes. The housing is fully machined prior to pressure test. A fully machined housing has a large amount of time invested.
I have two holes on the external surface of the housing .315 inches in diameter I need to plug or seal for pressure test. The finished machined housing results in machined features immediately adjacent to where the machined holes exit the surface of the housing which then make a face seal type arrangement difficult. I'm hoping I can find expandable plugs I can insert into the two holes that will ensure a safe leak tight seal for pressure test without marking or damaging the inside surface of the holes. The customer will visually inspect and marks are justification for workmanship rejections.
I have searched the internet and do find expandable type plugs that are similar to what I'm looking for. I'm hoping to find experience based feedback via this message thread.
We machine cores/passages to make all internal fluid path connections, then install threaded plugs with epoxy adhesive in four of the machined passages to seal external holes. The housing is fully machined prior to pressure test. A fully machined housing has a large amount of time invested.
I have two holes on the external surface of the housing .315 inches in diameter I need to plug or seal for pressure test. The finished machined housing results in machined features immediately adjacent to where the machined holes exit the surface of the housing which then make a face seal type arrangement difficult. I'm hoping I can find expandable plugs I can insert into the two holes that will ensure a safe leak tight seal for pressure test without marking or damaging the inside surface of the holes. The customer will visually inspect and marks are justification for workmanship rejections.
I have searched the internet and do find expandable type plugs that are similar to what I'm looking for. I'm hoping to find experience based feedback via this message thread.