So woahyia welding sintɔ biara te sɛ splashes akɛse wɔ welding mu, weld formation a ɛnyɛ fɛ, ne pores dodow bi wɔ welding akyi? Sɛ woda so ara resusuw ho sɛ ebia ɛyɛ ɔhaw a ɛfa laser welding process parameter nhyehyɛe ho nti, so wunim sɛ welding shielding gas a wɔde di dwuma yiye no nso yɛ ade titiriw a ɛka weld formation ne adwumayɛ. Sɛ wopaw welding shielding gas a eye sen biara a, ɛma welding no yɛ papa ankasa ne ɔkwan a etu mpɔn.
Esiane sɛ welding shielding gas ho hia nti, ɛnde: dwuma bɛn na ɛwɔ shielding gas? Ɔkwan bɛn so na wobɛpaw mframa ko a ɛbɔ ho ban no? Ɔkwan bɛn so na ɛsɛ sɛ wɔbɔ mframa a ɛbɔ ho ban no bere a wɔreyɛ welding no? Afei, Hangao Tech (Seko Machinery) bɛma obiara asua pii.
Dwuma a mframa a ɛbɔ ho ban di .
Wɔ laser welding mu no, mframa a ɛbɔ ho ban no bɛka weld a ɛba, weld no su, weld a ɛkɔ mu no mu dɔ ne ne tɛtrɛtɛ. Mpɛn pii no, mframa a ɛbɔ ho ban a wɔbɛbɔ no benya nkɛntɛnso pa wɔ weld no so, nanso ebetumi nso asɛe ade. ba nkɛntɛnso bɔne.
Nsunsuanso pa .
1) mframa a ɛbɔ ho ban a ɛbɛbɔ no yiye no bɛbɔ weld pool no ho ban yiye na ama oxidation so atew anaasɛ mpo wɔakwati;
2) mframa a ɛbɔ ho ban a ɛbɔ no yiye no betumi atew spatter a ɛba bere a wɔreyɛ welding no so yiye;
3) mframa a ɛbɔ ho ban a ɛbɔ no yiye no betumi ama weld pool no atrɛw pɛpɛɛpɛ wɔ bere a ɛreyɛ den no mu, sɛnea ɛbɛyɛ a weld no bɛyɛ pɛpɛɛpɛ na ɛyɛ fɛ;
4) mframa a ɛbɔ ho ban a ɛbɔ no yiye no betumi atew shielding effect a ɛwɔ metal vapor plume anaa plasma cloud no so wɔ laser no so, na ama laser no a wɔde di dwuma yiye no ayɛ kɛse;
5) Mframa a ɛbɔ ho ban a ɛbɔ yiye no betumi atew welding seam porosity no so yiye.
Bere tenten a wɔpaw gas no su, gas a ɛsen, ne ɔkwan a wɔfa so bɔ no yiye no, wobetumi anya nkɛntɛnso a wɔpɛ no.
Nanso, mframa a ɛbɔ ho ban a wɔmfa nni dwuma yiye no nso benya nkɛntɛnso bɔne wɔ welding so .
1) Mframa a ɛbɔ ho ban a ɛbɛbɔ no yiye no betumi ama weld no asɛe:
1 Gas type a ɛnteɛ a wɔbɛpaw no betumi ama weld no mu apaapae, na ebetumi nso ama weld no mfiri su so atew;
2 Mframa a ɛbɔ a ɛnnyɛ papa a wɔbɛpaw no betumi ama weld no ayɛ oxidation a emu yɛ den kɛse (sɛ́ ɛyɛ nsu a ɛsen no yɛ kɛse dodo anaasɛ ɛyɛ ketewaa dodo), na ebetumi nso ama nsu a ɛwɔ akyi no ayɛ nea efi akyi tumi ahorow no mu na ama weld no ahwe ase anaasɛ ayɛ nea ɛnteɛ;
3 a wɔbɛpaw ɔkwan a ɛnteɛ a wɔfa so bɔ gas no bɛma welding seam no antumi anyɛ ahobammɔ nkɛntɛnso no anaasɛ mpo ne titiriw no, ahobammɔ tumi biara nni hɔ anaasɛ ɛrennya nkɛntɛnso bɔne wɔ welding seam no so;
2) mframa a ɛbɔ wɔ shielding gas mu no benya nkɛntɛnso pɔtee bi wɔ weld no a ɛkɔ mu no so, titiriw bere a welding mprɛte a ɛyɛ tratraa no, ɛbɛtew weld a ɛkɔ mu no so.
Mframa ahorow a ɛbɔ ho ban .
Mframa a wɔtaa bɔ ho ban ma laser welding titiriw ne N2, AR, HE, na wɔn honam ne nnuru su yɛ soronko, na ɛno nti wɔn nkɛntɛnso wɔ weld no so nso yɛ soronko.
Nitrogen N2.
Bo no yɛ nea ne bo yɛ mmerɛw sen biara, nanso ɛnyɛ nea ɛfata sɛ wɔde weld dade a ɛnyɛ den bi. ionization ahoɔden a ɛwɔ N2 mu no yɛ nea ɛkɔ fam, ɛkorɔn sen AR de no na ɛba fam sen nea ɛwɔ he. 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 de nnuru ne aluminum aduru ne carbon dade yɛ adwuma wɔ ɔhyew mu wɔ ɔhyew pɔtee bi mu ma ɛyɛ nitrides, a ɛbɛma weld no ayɛ mmerɛw, atew toughness no so, na anya nkɛntɛnso bɔne kɛse wɔ mfiri su a ɛwɔ weld nkwaa no so. Enti, ɛnyɛ nea wɔkamfo kyerɛ sɛ wɔde nitrogen bedi dwuma. Wɔabɔ aluminum alloy ne carbon steel welds ho ban.
Nitride a nnuru a ɛwɔ nitrogen ne dade a ɛnyɛ den ntam no ma ɛyɛ adwuma no betumi ama weld nkwaa no ahoɔden ayɛ kɛse, na ɛbɛboa ma weld no mfiridwuma mu nneɛma atu mpɔn. Enti, wobetumi de nitrogen adi dwuma sɛ mframa a ɛbɔ ho ban bere a wɔde dade a ɛnyɛ den ayɛ no.
Argon AR .
Bo no bo yɛ mmerɛw, density no yɛ kɛse, na ahobammɔ tumi no ye. Weldment no ani yɛ mmerɛw sen helium mframa, nanso ɛyɛ mmerɛw sɛ ɛbɛyɛ dade a ɛyɛ hyew kɛse plasma ionization. asiw kwan kɛse. Ionization ahoɔden a ɛwɔ AR mu no sua koraa, na ionization degree no korɔn wɔ laser adeyɛ ase, a ɛnyɛ nea ɛfata sɛ ɛbɛhyɛ plasma mununkum a ɛba no so, na ebenya nkɛntɛnso pɔtee bi wɔ laser a wɔde di dwuma yiye no so. Nanso, AR dwumadi no sua koraa na ɛyɛ den sɛ wɔde nnuru ne dade a wɔtaa de di dwuma bedi nkitaho. AR ho ka nyɛ kɛse. Nea ɛka ho no, AR no mu duru korɔn, 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 mframa a ɛbɔ ho ban a wɔtaa de di dwuma.
helium ne .
Bo no bo yɛ den, nanso nea efi mu ba no yɛ nea eye sen biara, ma enti laser no betumi atwam tẽẽ na adu adwuma no ani a wonsiw ano. ionization ahoɔden a ɔwɔ no yɛ nea ɛkorɔn 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 ne dwumadi no sua koraa, na ne titiriw no ɛne dade nyɛ ade wɔ nnuru mu. Ɛyɛ mframa pa a ɛbɔ ho ban ma welding seams, nanso ɛka a wɔbɔ no yɛ kɛse dodo. Mpɛn pii no, nneɛma a wɔyɛ no pii no remfa saa mframa yi nni dwuma. Wɔtaa de no di dwuma ma nyansahu mu nhwehwɛmu anaa nneɛma a ɛsom bo kɛse paa.
Hangao Tech (Seko mfiri) wɔ bɛboro mfe 20 osuahu wɔ . Stainless dade mfiridwuma paipu production line tube yɛ mfiri a wɔyɛ. R&D kuw ne nhyiam ho adwumayɛfo a wɔn ho akokwaw no bɛyɛ debugging ne verification mpɛn pii wɔ production line biara so ansa na wɔde amena, sɛnea ɛbɛyɛ a wɔbɛma nnwinnade no ayɛ kɛse. To sɛnea ɛyɛ adwuma yiye no ano hye na tew ɔhaw a ɛwɔ akyiri yi a wɔde besisi hɔ no so na debugging ma adetɔfo.
