Wɔ mfiridwuma mu nneɛma a wɔyɛ mu no, medium-frequencyspot welding mfiri ahorowwɔbu no sɛ ɛsom bo esiane sɛnea wɔyɛ adwuma yiye ne ahoɔden a wɔkora so nti. Nanso, electrode a ɛsɛe ntɛmntɛm yɛ asɛnnennen a ɛtaa ba a ɛka weld no su, sɛnea ɛyɛ adwuma, ne ɛka a wɔbɔ wɔ adwumayɛ ho tẽẽ. Saa asɛm yi de nhyehyɛe mu nhwehwɛmu a wɔayɛ wɔ ntini a ɛde electrode a ɛyɛ mmerɛw ba ho ma na ɛde ano aduru a mfaso wɔ so a ɛbɛma mfiri nkwa nna atrɛw ma.
Mprempren & Nhyɛso Nhyehyɛe a ɛnteɛ
Kari pɛ a ɛda welding current ne electrode force ntam no ne ade titiriw a ɛwɔ nkɛntɛnso wɔ wear. Nsiesiei a ɛmfata betumi asɛe electrode ahorow ntɛmntɛm.
Mprempren a Ɛboro So:Current pii ma ɛyɛ hyew dodo ntɛm ara wɔ electrode no ano, na ɛma ɛyɛ mmerɛw, ɛyɛ mmerɛw, na "ɛyɛ nsenia."
Nhyɛso a Ɛnnɔɔso:Ahoɔden a ɛba fam no ma ɛnyɛ nea ɛne ne ho di nkitaho yiye, ɛma anyinam ahoɔden a ɛko tia no yɛ kɛse na ɛma ɔhyew no kɔ electrode no ano sen sɛ ɛbɛyɛ nneɛma a wɔde yɛ adwuma no, na ɛma ɛyɛ amena na ɛbata ho.
Ano aduru:
Parameters a Ɛyɛ Pɛpɛɛpɛ:Set mprempren a egyina nneɛma no su ne ne kɛse so (sɛ nhwɛso no, 8-12 kA/mm2 ma dade a ɛyɛ mmerɛw; ɛkorɔn ma aluminium).
Optimize Force:Ma electrode nhyɛsoɔ nkɔ so wɔ baabi a wɔkamfo kyerɛ no mu (sɛ nhwɛsoɔ no, 0.2-0.4 MPa) na ama woahwɛ ahu sɛ nugget bɛhyehyɛ daa na woatew nsuo a ɛbɛpetepete so.
Adeyɛ a Wɔpaw:Fa "hard" (mprempren a ɛkorɔn, bere tiaa) anaa "soft" (mprempren a ɛba fam, bere tenten) welding nhyehyɛe di dwuma de hwɛ ɔhyew adesoa a ɛwɔ electrodes no so.
Electrode Nneɛma a Ɛmfata
Electrode ade a ɛnteɛ a wɔpaw ma dwumadie no yɛ ade titiriw a ɛma wɔsɛe ntɛm.
Chromium Zirconium Kɔbere (CrZr) a wɔde yɛ nneɛma:A general-atirimpɔw a wɔpaw a conductivity pa ne hardness ma carbon ne stainless dade, nanso ɛhyɛ ntɛmntɛm ne high-ahoɔden anaa conductive nneɛma.
Aluminium Oxide Kɔbere (Alumina Cu): .Excellent wear resistance (5x sen CrZr), a eye ma galvanized dade ne aluminium, a ɛyɛ mmerɛw sɛ ɛbɛbata ho.
Tungsten Kɔbere (WCu) / Molybdenum: .Ɔhyew a ɛkorɔn-a ɛyɛ den ma wɔfata ma nneɛma a ɛma nsu fa mu kɛse te sɛ kɔbere ne kɔbere, ɛwom sɛ ne bo yɛ den de.
Ano aduru:
Fa Nsɛm a Wɔde Di Dwuma no Ntoto Ho:Fa Alumina Cu di dwuma ma dade a wɔde galvanized ayɛ; paw WCu ma kɔbere a wɔde afrafra.
Nneɛma a Wɔahyehyɛ:Sɛ wopɛ dwumadie a ɛyɛ den a, fa insert electrodes (sɛ nhwɛsoɔ no, tungsten tip a wɔde ahyɛ CrZr nipadua mu) di dwuma de ka conductivity ne wear resistance bom.
Onwini a wɔde ma yiye ho hia yiye. Nhyehyɛe a entumi nyɛ adwuma yiye yɛ ade a ahintaw a ɛde electrode no sɛe wɔ ɔkwan a ɛnteɛ so.
Nsuo a Ɛnsen/Ɔhyew a Ɛnyɛ Yie:Nsu a ɛsen sɛnea ɛsɛ anaasɛ nsu a ɛyɛ hyew kɛse no mma ɔhyew no ntumi nkɔ, na ɛma electrode no yɛ hyew dodo na ɛyɛ mmerɛw.
Ntrɛwmu a Wɔasiw:Scale anaa nneɛma a asɛe wɔ onwini akwan mu no ma mmeae a ɛyɛ hyew ba, na ɛde localized deformation ba.
Ano aduru:
Nsiesiei a Wɔyɛ Daa:Fa cooling system checklist di dwuma. Hwɛ sɛnea nsu a ɛsen ne ɔhyew a ɛsen no. Fa nsu a ion nnim anaa aduru titiriw a ɛma onwini di dwuma na amma nsenia ankɔ soro.
Yɛ Nneɛma a Wɔayɛ no Yiye:Hwɛ hu sɛ akwan a ɛma onwini a ɛwɔ mu no mu da hɔ. Paw electrode ahorow a ɛwɔ bores akɛse ne overhangs ntiantiaa na ama ɔhyew no akɔ soro kɛse.
Adwumayɛbea no Anim Tebea a enye
Tebea a adwuma no ani te no nya baabi a ɔhyew ba no so nkɛntɛnso tẽẽ.
Nneɛma a ɛde efĩ ba:Ngo, efĩ, ne oxide a ɛwɔ soro no ma ahoɔden a ɛwɔ soro no yɛ kɛse, na ɛma ɔhyew no yɛ kɛse wɔ electrode-adwuma no ntam, na ɛde ɔhyew a ɛboro so na efĩ ba.
Splash a Wɔde Bata Ho:Dade a apetepete a ayɛ nwini betumi abata electrode no anim, na asakra ne nsusuwii na ama weld a edi hɔ no asɛe ntɛmntɛm.
Ano aduru:
Ansa na-ahotew:Fa pre-weld ahotew nhyehyɛe a wode degreasers anaa ultrasonic cleaners di dwuma de yi efĩ fi hɔ si hɔ. Pretreatment (sɛ nhwɛso no, pickling) ho hia ma nneɛma te sɛ galvanized dade.
Post-weld Nsiesiei:Fa fael anaa dresser a wɔahyira so hohoro electrode ano daa na yi buildup na woakura contact surface a ɛho tew na ɛyɛ tratraa.
Awie
Electrode wear wɔ medium-frequency muspot welding afiri a wɔde yɛ nneɛmayɛ asɛm a ɛwɔ afã horow pii, nanso wobetumi adi ho dwuma yiye. Ɛdenam nhyehyɛe no parameters a wobɛma ayɛ yiye, electrode ade a ɛfata a wobɛpaw, cooling nhyehyɛe no a wobɛhwɛ so, na woahwɛ ahu sɛ adwumayɛbea ahorow a ɛho tew so no, wubetumi atrɛw electrode nkwa nna mu kɛse, ama weld no ayɛ pɛpɛɛpɛ, na woatew ɛka nyinaa so.
