What is the purpose of drilling screw holes in the perforated reinforcement ring?
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What is the purpose of drilling screw holes in the perforated reinforcement ring? Please provide an answer
Leak signal indicator hole and exhaust hole
Gas can be vented during the welding process; another option is to conduct a gas-tightness test.
How do you conduct a airtightness test? Why must it be threaded holes? Ordinary holes can also be used for venting air
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Threaded holes are required to conduct a gas-tightness test; you can take a look at the reinforcement standards.
It is used as ventilation holes when welding reinforcement plates, to prevent the heat generated during welding from affecting a full weld of the reinforcement ring.
Used to introduce compressed air for leak detection, and also serves as an exhaust vent
It seems there are many such posts; the original poster should do a search. The openings in the reinforcement plates are divided into smooth holes and threaded holes; both serve the purpose of allowing for the welding of exhaust and leakage signals. The difference is that for reinforcement plates with threaded holes, a gas-tightness test must be conducted after welding (by introducing 0.4–0.5 bar of compressed air; threaded holes facilitate the connection of fittings) to check whether there are any leaks in the fillet welds of the reinforcement plate.
Vent hole + test hole. Generally, M10 is used domestically
Leak detection and vent holes: the thread is used so that they can be sealed with screws after inspection