So woahyia welding mu sintɔ biara te sɛ nsu a ɛpetepete kɛse bere a woreyɛ welding, weld a ɛnyɛ fɛ, ne ntini pii a ɛwɔ welding akyi?Bere a woda so ara resusuw ho sɛ ebia ɛyɛ ɔhaw a ɛwɔ laser welding nhyehyɛe parameter nhyehyɛe mu nti, so wunim sɛ welding shielding gas a wɔde di dwuma yiye no nso yɛ ade titiriw a ɛka weld formation ne adwumayɛ.Paw welding shielding gas a eye sen biara nokwarem no ma welding su ne Ɔkwan a etu mpɔn no tu mpɔn.
Esiane sɛ welding shielding gas ho hia kɛse nti, ɛnde: Dwuma bɛn na shielding gas di?Ɔkwan bɛn so na wobɛpaw mframa a ɛbɔ wo ho ban no?Ɔkwan bɛn so na ɛsɛ sɛ wɔbɔ mframa a ɛbɔ ho ban no mu bere a wɔreyɛ welding no?Afei, Hangao Tech (SEKO Machinery) bedi obiara anim ma wasua pii.
Dwuma a mframa a ɛbɔ ho ban di
Wɔ laser welding mu no, shielding gas bɛka weld formation, weld su, weld penetration bun ne penetration trɛw.Mpɛn pii no, mframa a ɛbɔ ho ban a wɔbɔ no benya weld no so nkɛntɛnso pa, nanso ebetumi asɛe ade nso.Bra nkɛntɛnso a enye.
Nsunsuanso pa a efi mu ba
1) Mframa a ɛbɔ ho ban a wɔbɔ no yiye no bɛbɔ weld pool no ho ban yiye na ama oxidation so atew anaasɛ mpo akwati;
2) Mframa a ɛbɔ ho ban a wɔbɔ no yiye no betumi atew spatter a ɛba bere a wɔreyɛ welding no so yiye;
3) Sɛnea wɔbɔ mframa a ɛbɔ ho ban no yiye no betumi ama weld pool no atrɛw pɛpɛɛpɛ bere a ɛyɛ den, sɛnea ɛbɛyɛ a wɔbɛhyehyɛ weld no pɛpɛɛpɛ na ɛyɛ fɛ;
4) Sɛnea ɛteɛ bɔ shielding gas betumi atew shielding nkɛntɛnso a dade vapor plume anaa plasma mununkum wɔ laser no so yiye, na ama laser no a wɔde di dwuma yiye no akɔ soro;
5) Sɛnea wɔbɔ mframa a ɛbɔ ho ban yiye no betumi atew welding seam porosity no so yiye.
Bere tenten a wɔpaw gas su, mframa a ɛsen, ne ɔkwan a wɔfa so bɔ no yiye no, wobetumi anya nkɛntɛnso a wɔpɛ.
Nanso, mframa a ɛbɔ ho ban a wɔmfa nni dwuma yiye nso benya welding so nkɛntɛnso bɔne
1) Sɛ wɔmmɔ shielding gas a ɛnteɛ a, ebetumi ama weld no asɛe:
1Sɛpaw gas type a ɛnteɛ a, ebetumi ama weld no mu apaapae, na ebetumi nso ama weld no mfiridwuma mu nneɛma so atew;
2Sɛpaw gas a ɛbɔ no a ɛnteɛ a, ebetumi ama weld no ayɛ oxidation a anibere wom kɛse (sɛ́ ebia nsu no sõ dodo anaasɛ sua dodo), na ebetumi nso ama weld pool dade no ayɛ nea abɔnten tumi ahorow asiw kwan kɛse na ama weld no ahwe ase anaasɛ ayɛ nea ɛnteɛ;
3Sɛpaw gas blowing kwan a ɛnteɛ a ɛbɛma welding seam no rentumi nnya ahobammɔ nkɛntɛnso no anaasɛ mpo titiriw no ahobammɔ nkɛntɛnso biara nni hɔ anaasɛ ebenya nkɛntɛnso bɔne wɔ welding seam formation no so;
2) Blowing wɔ shielding gas mu no benya nkɛntɛnso bi wɔ weld penetration, titiriw bere a welding teateaa mprɛte, ɛbɛtew weld penetration.
Mframa ahorow a ɛbɔ ho ban
Mframa a wɔtaa de di dwuma a ɛbɔ ho ban ma laser welding titiriw ne N2, Ar, He, na wɔn honam fam ne nnuru su yɛ soronko, na enti wɔn nkɛntɛnso wɔ weld no so nso yɛ soronko.
Nitrogen N2 a ɛyɛ adwuma
Ne bo yɛ nea ne bo yɛ mmerɛw sen biara, nanso ɛnyɛ nea ɛfata sɛ wɔde weld dade a ɛnyɛ den bi.N2 ionization ahoɔden no yɛ nea ɛkɔ fam, ɛkorɔn sen Ar de no na ɛba fam sen He de no.Wɔ laser adeyɛ ase no, ionization degree no yɛ average, a ebetumi atew plasma mununkum a ɛba no so na ama laser a wɔde di dwuma yiye no akɔ soro.Nitrogen tumi ne aluminium a wɔde afra ne carbon dade yɛ adwuma wɔ ɔhyew pɔtee bi mu ma ɛyɛ nitrides, na ɛbɛma weld no ayɛ mmerɛw kɛse, atew ne den so, na anya nkɛntɛnso bɔne kɛse wɔ mfiri a ɛwɔ weld no mu no so.Enti, wɔmfa nitrogen nni dwuma.Wɔabɔ aluminium a wɔde afra ne carbon dade weld ho ban.
Nitride a nnuru a ɛyɛ adwuma wɔ nitrogen ne dade a ɛnyɛ den ntam no betumi ama weld joint no ahoɔden akɔ soro, na ɛbɛboa ma weld no mfiridwuma atu mpɔn.Enti, wobetumi de nitrogen adi dwuma sɛ mframa a ɛbɔ ho ban bere a wɔreyɛ dade a ɛnyɛ den a wɔde weld ayɛ no.
Argon Ar. Ɔkyerɛwfo
Ne bo yɛ mmerɛw, density no yɛ kɛse, na ahobammɔ nkɛntɛnso no ye.Weldment no ani yɛ torotoro sen helium gas, nanso ɛyɛ mmerɛw sɛ dade plasma ionization a ɛwɔ ɔhyew kɛse mu.Wɔasiw no kwan kɛse.Ar ionization ahoɔden no sua koraa, na ionization degree no korɔn wɔ laser adeyɛ ase, a ɛnyɛ papa sɛ wobedi plasma mununkum a ɛba no so, na ebenya nkɛntɛnso bi wɔ laser a wɔde di dwuma yiye no so.Nanso, Ar dwumadi sua koraa na ɛyɛ den sɛ ɛne dade a wɔtaa de di dwuma no bedi nkitaho wɔ nnuru mu.Ar ho ka nyɛ kɛse.Bio nso, Ar a ɛyɛ den no dɔɔso, a mfaso wɔ so sɛ ɛbɛkɔ fam akɔ weld pool no atifi, na ebetumi abɔ weld pool no ho ban yiye, enti wobetumi de adi dwuma sɛ shielding gas a wɔtaa de di dwuma.
Helium Ɔyɛ
Bo no bo yɛ den, nanso nkɛntɛnso no ne nea eye sen biara, sɛnea ɛbɛyɛ a laser no betumi atwam tẽẽ na adu adwuma no ani a wɔrensiw ano.He ionization ahoɔden no korɔn sen biara, na ionization degree no sua koraa wɔ laser adeyɛ ase, a ebetumi adi plasma mununkum a ɛba no so yiye.Laser no tumi yɛ adwuma wɔ dade so yiye, na Ɔno dwumadi sua koraa, na ne titiriw no, ɛne dade nyɛ nnuru.Ɛyɛ gas a ɛbɔ ho ban pa ma welding seams, nanso ɛka a wɔbɔ wɔ He ho no yɛ kɛse dodo.Mpɛn pii no, nneɛma a wɔyɛ no pii remfa saa mframa yi nni dwuma.Wɔtaa de no yɛ nyansahu mu nhwehwɛmu anaa nneɛma a ɛsom bo kɛse a wɔde ka ho.
Hangao Tech (SEKO Machinery) wɔ bɛboro mfeɛ aduonu osuahu wɔ... stainless dade mfiridwuma paipu production line tube yɛ mfiri manufacturing nnwuma.R&D kuw a wɔn ho akokwaw ne assembly technicians bɛyɛ debugging ne verification a wɔsan yɛ no nyinaa wɔ production line biara so ansa na wɔde amena, sɛnea ɛbɛyɛ a wɔbɛma nnwinnade no ayɛ kɛse.Tow adwumayɛ ano hye na tew ɔhaw a ɛwɔ akyiri yi instɔlehyɛn ne debugging mu ma adetɔfo no so.
