Ebia dade a ɛnyɛ den a wɔde weld ayɛ no betumi anya ɔhaw pii wɔ bere a wɔreyɛ welding no, te sɛ nea wɔatwa no ase, ntini a ɛwɔ mu, nea ɛnhyew, mpaapaemu, ne nea ɛkeka ho. Afei, mpaapaemu bɛn na wunim bere a welding stainless steel welded pipes no?
1. Mpaapaemu a ɛyɛ hyew .
Ɛkyerɛ welding mpaapaemu a dade no de ba wɔ weld ne ɔhyew a ɛka no beae no wɔ welding nhyehyɛe no mu kɔ ɔhyew a ɛkɔ soro a ɛbɛn solidus line no. Nneɛma a wɔde siw ano: Di efĩ a epira te sɛ sulfur ne phosphorus a ɛwɔ dade a ɛnyɛ den a wɔde weld ayɛ ne nneɛma a wɔde yɛ welding so no so pɛpɛɛpɛ, tew mpaapaemu a ɛyɛ hyew no so; Yɛ nsakrae wɔ nnuru a ɛwɔ weld dade mu no mu, ma weld microstructure tu mpɔn, siesie aburow no yiye, na ma plasticity tu mpɔn. Tew sɛnea mpaapaemu no te so anaasɛ wɔpete no; Fa alkaline welding nneɛma di dwuma na ama efĩ a ɛwɔ weld no mu no so atew na ama mpaapaemu no atu mpɔn.
2. Awɔw mu mpaapaemu .
Ɛkyerɛ mpaapaemu a ɛba bere a wɔma welded nkwaa no yɛ nwini kodu ɔhyew a ɛba fam, a wɔfrɛ no cold crack no. Nneɛma a wɔde siw ano: Fa low-hydrogen type welding nneɛma di dwuma, di akwankyerɛ a ɛwɔ akwankyerɛ no mu no akyi pɛpɛɛpɛ ansa na wode adi dwuma; Yi ngo ne nsu a ɛwɔ weldments no so ansa na welding no, tew hydrogen a ɛwɔ weld no mu no so; Paw welding a ntease wom nhyehyɛe parameters ne ɔhyew input na atew hardening su a weld no ntɛm ara ase hydrogen elimination ayaresa akyi welding ma kwan ma hydrogen guan fi welded nkwaa;
3. Reheat crack .
Ɛkyerɛ mpaapaemu a ɛba bere a wɔasan de dade a ɛnyɛ den a wɔde weld ayɛ no ayɛ hyew bio wɔ ɔhyew pɔtee bi mu (ɔhyew a ɛma adwennwen anaasɛ ɔhyew foforo a wɔyɛ), a wɔfrɛ no krak a wɔsan yɛ no hyew no.
Nneɛma a wɔde siw ano: Wɔ nsusuwii a ɛne sɛ wobedi nhyehyɛe ahwehwɛde ahorow ho dwuma no ase no, paw nneɛma a wɔde yɛ welding a ahoɔden kakraa bi na ɛwom, sɛnea ɛbɛyɛ a weld ahoɔden no bɛba fam sen dade a ɛwɔ ase no, adwennwen no ayɛ mmerɛw wɔ weld no mu, kwati mpaapaemu wɔ beae a ɔhyew no aka no; Tew welding residual stress ne stress concentration so; Hwɛ welding ɔhyew a ɛwɔ welded paipu no mu, paw preheating ne ɔhyew ayaresa hyew wɔ ntease mu, na kwati beae a ɛyɛ mmerɛw no sɛnea ɛbɛyɛ yiye biara.
Ɛsɛ sɛ dadeɛ a ɛnyɛ den a wɔde weld ayɛ no yie no hwɛ nneɛma a atwa yɛn ho ahyia no wɔ berɛ a wɔreyɛ adwuma no, na ɛyɛ nsakraeɛ wɔ berɛ mu na ɛyɛ kyerɛwtohɔ. Sɛ wɔde ka tebea ahorow a wɔn a wɔyɛ dade a wɔde dade a ɛnyɛ den ayɛ no ho a, ɛda adi no ho a, . Hangao Tech (seko mfiri) .s High-speed stainless steel welded pipe production line tube making Machine de Seko electromagnetic control nhyehyɛe a ɛyɛ soronko no di dwuma de hwɛ arc a ɛtwee no so, a ɛma welding no yɛ adwuma yiye na ɛyɛ papa. Bere koro no ara mu no, wɔde eddy current flaw detector no di dwuma de ka bom de hwɛ welded pipe no mu ɔfasu no bere nyinaa. PLC nhyehyɛe a nyansa wom no hwɛ na ɛkyerɛw nsɛm a ɛfa afiri a wɔde yɛ welded no ho wɔ bere ankasa mu, ma enti aba no tu mpɔn kɛse, na ɛnam so ma ɛka no so tew.
