Wɔ nnɛyi kar a wɔyɛ mu no, welding nyɛ dade a wɔde bom yɛ mmerɛw bio. Mmom, adane abɛyɛ adwuma a wɔhwɛ so pɛpɛɛpɛ-a ɛhwehwɛ sɛ wɔhwɛ so yiye wɔ nhyehyɛe mumprempren, tumi, ne berewɔ milisekɔn kakraa bi mu. Bere a kar nhyehyɛe kɔ so de adan a emu yɛ hare, anyinam ahoɔden, ne ahobammɔ gyinapɛn a ɛkorɔn di kan no, atetesɛm mu welding mfiridwuma no de nkakrankakra adu ne anohyeto mu wɔ sɛnea ɛyɛ pɛpɛɛpɛ ne sɛnea ɛyɛ adwuma no mu. Enti Medium Frequency Direct Current (MFDC) spot welding abɛyɛ ano aduru a wɔpɛ wɔ mmeae pii a wɔyɛ kar.
Sɛ wɔde toto AC welding nhyehyɛe a wɔtaa de di dwuma ho a, MFDC spot welders taa yɛ adwuma wɔ inverter frequency a ɛyɛ bɛyɛ1000 Hz na ɛwɔ hɔ, a ɛma wotumi yɛ wɔn ade ntɛmntɛm wɔ nneɛma mu nsakrae ho na wɔde mprempren a ɛyɛ den ma wɔ welding kyinhyia ntiantiaa mu. Ɛnyɛ sɛ saa su ahorow yi ma weld su a ɛkɔ so daa no tu mpɔn nko na mmom ɛboa tẽẽ ma kar no nyinaa yɛ adwumaNVH adwumayɛ (Dede, Wosow, ne Kateeyɛ) .ne sɛnea wobetumi ahwe ase nso.
Saa asɛm yi hwehwɛ nneɛma abiɛsa a ɛho hia a wɔde yɛ kar ho adwuma-.Nipadua-wɔ-Nhyehyɛe fitaa, batere nhyehyɛe, ne chassis ahobammɔ afã horow-na ɔkyerɛkyerɛ sɛnea MFDC spot welding mfiridwuma di nsɛnnennen a mfaso wɔ so a ɛbata emu biara ho no ho dwuma. Ɛsan nso de akwankyerɛ a mfasoɔ wɔ so a ɛfa nnwinnadeɛ a wɔpaw ho ma de boa mfiridwumayɛfoɔ ne adetɔ akuo wɔ sikasɛm mu gyinaesie a ɛwɔ nimdeɛ mu.
Nipadua-wɔ-White Welding: Nsɛnnennen a Dade a Ɛkorɔn-Ahoɔden ne Multi{3}}Layer Structures De Ba
Body-in-White (BIW) structures na ɛyɛ kar no mfitiaseɛ nhyehyɛeɛ, na weld joints no yiedie nya structure rigidity, long-term durability, ne crash performance so nkɛntɛnsoɔ tẽẽ. Wɔ nnansa yi mfe mu no, wɔn a wɔyɛ kar no agye atom kɛsepress-dade a ayɛ den (PHS) .ne multi-layer assemblies sɛnea ɛbɛyɛ a wobenya adansi a emu yɛ hare ne ahoɔden a ɛkorɔn nyinaa. Bere a saa nneɛma yi de mfaso kɛse ba adwumayɛ so no, ɛsan nso hwehwɛ nneɛma pii wɔ mfiri a wɔde yɛ welding ho.
Mfiridwuma mu Nsɛnnennen a Ɛtaa ba wɔ High-Strength Steel Welding mu
High-ahoɔden dade nyɛ den fi awosu mu sɛ wɔbɛweld, nanso ɛhwehwɛ sɛ ɛyɛ den yiye nhyehyɛe sohwɛ. Sɛ welding mfiri ntumi nyɛ adwuma ntɛmntɛm wɔ nsakrae a ɛba wɔ anyinam ahoɔden a ɛko tia mu a, mpɛn pii no ɛbɛyɛ den sɛ wɔbɛkɔ so akura weld no mu pɛpɛɛpɛ.
Nsɛnnennen a ɛtaa ba no mu biako fiAl-Si nneɛma a wɔde akata so. Wɔde aluminium-silicon layer akata 1500 MPa-grade press-grade press-dade dodow no ara so, a ɛda nkitahodi a entumi nnyina ano wɔ welding fã a edi kan no mu. Sɛ wɔanhyɛ mprempren nhyehyɛe a ɛyɛ den a, tebea yi betumi ama nsu apetepete so dodo, nugget a ɛnkɔ so pɛpɛɛpɛ, na electrode no asɛe ntɛmntɛm. Ɛnyɛ sɛ saa nsɛm yi ka weld no su nko na mmom ɛma ahwehwɛde a ɛfa nsiesie ne bere a wɔde yɛ adwuma no yɛ kɛse nso.
Ɔsɛmpɔw foforo a ɛtaa ba wɔmulti-layer krataa nhyiam ahorow, titiriw wɔ adansi mmeae te sɛ B-adum ne asɔremma a ɛtrɛw. Nsiesiei te sɛ "nkratafa a ɛyɛ tratraa abien ne krataa a ɛyɛ den biako" anaa "nkratafa abiɛsa a ne kɛse yɛ pɛ" na wɔtaa de di dwuma. Wɔ nhyehyɛe ahorow yi mu no, anyinam ahoɔden taa di ɔkwan a ɛnyɛ den koraa no akyi, na ɛno betumi asiw ɔhyew a ɛdɔɔso a ɛbɛba wɔ ntam a ɛyɛ den mu no ano. Ne saa nti, fusion a enni mũ anaasɛ nugget a ɛnkɔ mu a ɛnnɔɔso betumi aba.
Ɛwom sɛ ebia mfiase no ɛbɛyɛ te sɛ nea wogye weld ankorankoro tom de, nanso nsɛm a ɛnhyia a ahintaw a ɛte saa no betumi ama adan no adwumayɛ ayɛ mmerɛw wɔ tebea horow a wɔde nneɛma gu mu a ɛhwe ase mu.
MFDC Ano aduru Titiriw ma BIW Nnwuma
Sɛnea ɛbɛyɛ na wɔadi saa nsɛnnennen yi ho dwuma no, MFDC welding nhyehyɛe ahorow de control strategies a wɔayɛ no yiye kɛse di dwuma, nemmuae a wɔde ma ntɛmntɛm a wɔhwɛ sosɛ́ tumi ahorow a ɛho hia sen biara no mu biako.
Nnɛyi MFDC controllers taa yɛ mprempren feedback ho nhwɛso wɔ milisecond ntam. Sɛ wohu nsakrae a ɛba mpofirim wɔ resistance mu a, ɛkame ayɛ sɛ nhyehyɛe no sesa output parameters ntɛm ara, na ɛma ɔhyew a ɛba no gyina hɔ pintinn wɔ weld cycle no nyinaa mu. Saa tumi yi ho hia titiriw bere a wɔde nneɛma a wɔde akata so reyɛ adwuma no, efisɛ mpɛn pii no, ade a wɔde kata so no bubu fã no ne adeyɛ no fã a entumi nnyina pintinn sen biara.
Wɔ bere a wɔde di dwuma ankasa- akyi no, .multi-pulse welding profile ahorowwɔde di dwuma kɛse wɔ BIW a wɔyɛ mu de ma nhyehyɛe no gyina pintinn na ɛtew emu nhyɛso dodow so.
Multi{0}}stage welding sequence a ɛtaa ba no bi ne:
| Prama | Dwumadie | Botae Titiriw |
|---|---|---|
| Preheating Stage a Wɔde Yɛ Ɔhyew | Mprempren input a ɛba fam | Ɛma ade a wɔde kata so no yɛ mmerɛw na ɛma anyinam ahoɔden a ɛne ne ho di nkitaho no gyina |
| Welding Stage titiriw | Mprempren ahoɔden a ɛkɔ soro | Ɔhyehyɛ weld nugget no |
| Tempering Stage a Wɔde Yɛ Adwuma | Mprempren pulse a ɛso atew | Ɛma ductility tu mpɔn na ɛtew brittleness so |
Wɔ dwumadie a mfasoɔ wɔ so mu no, saa kwan yi brɛ nsuo a ɛpetepete so ase kɛseɛ na ɛtrɛ electrode dwumadie nkwa nna mu, na mpɛn pii no ɛtumi yɛelectrode nkwa nna tenten mmɔho abiɛsa kosi anumsɛ wɔde toto AC welding nhyehyɛe ahorow a wɔtaa de di dwuma ho a.
Battery System Welding: Aluminum ne Nneɛma a Ɛho Nsɛ Ho Ahwehwɛde a Wodi Ho Dwuma
Esiane sɛ kar a anyinam ahoɔden wom renya nkɔanim ntɛmntɛm nti, batere nhyehyɛe abɛyɛ nneɛma a wɔboaboa ano a ɛho hia sen biara wɔ nnɛyi kar nhyehyɛe mu no mu biako. Nneɛma te sɛ battery trays, support frames, ne conductive connectors hia welds a wotumi de ho to so kɛse na ama wɔahwɛ ahu sɛ nhyehyɛe no mudi mu kura bere tenten na anyinam ahoɔden bɛyɛ adwuma.
Wɔ saa beae yi, MFDC spot welding ma nkɔso a ɛba wɔ adwumayɛ mu ne ahotoso mu mfaso kɛse.
Nea Enti a Aluminium Welding Yɛ Nea Ɛhwehwɛ Kɛse
Wɔde aluminium a wɔde afra di dwuma kɛse wɔ anyinam ahoɔden kar batere nhyehyɛe mu, nanso sɛnea wɔde weld yɛ no yɛ soronko koraa wɔ dade de ho.
Ade titiriw biako ne ɔhyew a ɛkɔ nipadua no mu. Aluminium de ɔhyew kɔ ntɛmntɛm bɛyɛ mmɔho abiɛsa sen dade, na ɛkyerɛ sɛ ɔhyew no sɛe ntɛmntɛm kɔ nneɛma a atwa ho ahyia no mu. Sɛ wɔamfa ahoɔden a wɔde hyɛ mu no amma ntɛmntɛm sɛnea ɛsɛ a, ɛbɛyɛ den sɛ wɔbɛyɛ weld nugget a ɛyɛ den. Bio nso, mpɛn pii no, wɔde oxide a ɛyɛ den kata aluminium ani, a ne hyew a ɛyɛ hyew no boro dade a ɛwɔ ase no so kɛse. Gye sɛ wɔsɛe saa oxide layer yi yiye, weld no mudi mu kura betumi asɛe.
Esiane saa nneɛma yi nti, aluminium welding hwehwɛ abien no nyinaamprempren tumi a ɛkorɔnnetumi a wɔde di dwuma pɛpɛɛpɛ.
Botae a ɛwɔ High Current Output wɔ Short Weld Cycles mu
Mfaso a ɛho hia sen biara a ɛwɔ MFDC welders so wɔ aluminium dwumadie mu no mu baako ne sɛ wɔtumi de mprempren ahoɔden a ɛyɛ den, a ɛkorɔn ma wɔ welding bere tiaa koraa mu. Eyi ma ɔhyew no yɛ kɛse wɔ weld ntam mmom sen sɛ ɛbɛsɛe wɔ nneɛma a atwa ho ahyia no nyinaa mu.
Wɔ tebea horow a wɔtaa yɛ mu no, wɔtaa wie aluminium welding kyinhyia ahorow wɔ munea ennu milisekɔn 100, a mprempren dodow no adu30 kA kosi 50 kA. Saa ahoɔden a wɔde ma ntɛmntɛm yi boa nugget a ɛba daa bere a ɛtew ɔhyew-a ɛka zone nyin so na ɛtew asiane a ɛwɔ hɔ sɛ ɔfã bi bɛkyinkyim no so.
Wɔ adan akɛse te sɛ batere trays fam no, saa tumi ahorow yi taa kyerɛ ase tẽẽ kɔ adwumayɛ a ɛkɔ anim ne nneɛma a wɔsɛe no so tew mu.
Adeyɛ a Wɔde Di Dwuma wɔ Dissimilar Metal Welding mu
Wɔ batere module mu no, ɛtaa ba sɛ wɔde nneɛma te sɛ aluminium-ka-kɔbere anaa aluminium-kɔ-dade bom. Saa dade a wɔaka abom a ɛnsɛ yi hwehwɛ sɛ wɔhwɛ so yiye na amma nea ɛboro so no anhyehyɛintermetallic compound (IMC) a wɔde ayɛ nneɛma a ɛwɔ ntam, a ebetumi ama mfiri a ɛwɔ weld no mu no ayɛ mmerɛw.
Ɛdenam mprempren polarity ne ɔhyew kyekyɛ a wɔsesa so no, MFDC nhyehyɛe ahorow ma kwan ma wɔhwɛ intermetallic nyin so pɛpɛɛpɛ, na ɛboa ma nkwaa ahoɔden ne bere tenten - ahotoso kɔ so.
Nneɛma a wɔyɛ ho nsɛm a efi welding akwan a wɔayɛ no yiye mu taa kyerɛ sɛ nsakrae a ɛba weld ahoɔden mu no so atew kɛse, na ɛboa ma nneɛma a wɔyɛ no nyinaa yɛ pɛpɛɛpɛ.
Chassis ne Ahobammɔ Nneɛma: Stability ne Traceability Ahwehwɛde
Te sɛ BIW nhyehyɛe no, ɛsɛ sɛ chassis afã horow no du adwumayɛ gyinapɛn a emu yɛ den ho. Saa afã horow yi taa nya tebea horow a ɛyɛ nnam a ɛde nneɛma gu mu, na weld no mudi mu kura ho hia na ama kar ahobammɔ akura mu.
Nhwɛsoɔ a ɛtaa ba ne subframes, control arms, ne seat belt anchor points, a wɔakyekyɛ ne nyinaa mu sɛ ahobanbɔ-adeɛ a ɛho hia.
Stable Ahoɔden Delivery wɔ Thick Nneɛma Welding
Chassis afã horow taa de dade ntama a ne kɛse fi3 mm kosi 6 mm. Wɔ mmeae a wɔyɛ nneɛma ankasa no, ebia nneɛma a wɔde kata so, oxidation nketenkete, anaasɛ nhyiam mu nsonsonoe, a ne nyinaa betumi anya nkɛntɛnso a ɛko tia nkitahodi.
Sɛ welding nhyehyɛe ahorow ntumi ntua nsakrae yi so ka a, sintɔ ahorow te sɛ nea ɛnkɔ mu yiye anaasɛ weld a ɛyɛ nwini betumi aba. Nea ɛbɛyɛ na wɔadi asɛnnennen yi ho dwuma no, mpɛn pii no wɔde nnwinnade a ɛkɔ anim ka hotumi a wɔde di dwuma daa akwan horow, a ɛsakra voltage output no ankasa na ama ɔhyew a ɛba no agyina pintinn.
Saa kwan yi hwɛ hu sɛ weld su a ɛkɔ so daa mpo bere a adwumayɛbea tebea sakra, na ɛtew nhyehyɛe mu nsakrae so kɛse.
Weld Data Management Ho Hia a Ɛrenya Nkɔanim
Wɔ nnɛyi kar a wɔyɛ mu no, ɛnyɛ sɛ ɛsɛ sɛ weld su yɛ nea ɛkɔ so daa nko, na mmom ɛsɛ sɛ wotumi hwehwɛ mu koraa nso. Nkɔanim no, wɔde welding nhyehyɛe ahorow afrafra dijitaal adwumayɛbea ahorow a wɔkyerɛw nhyehyɛe ho nsɛm a ɛkɔ akyiri ma weld biara.
Nneɛma a wɔtaa kyerɛw too hɔ no bi ne:
| Data Type | Botaeɛ |
|---|---|
| Mprempren Asorɔkye Nsusuwii | Hwɛ sɛ ahoɔden a ɛkɔ so pɛpɛɛpɛ no yɛ nokware |
| Ahoɔden a Wɔde Kyerɛw | Ɔhwɛ electrode nhyɛso nneyɛe so |
| Nsɛm a ɛfa nnipa a wɔatu afi wɔn afie ho | Tracks nugget formation ahoɔden |
| Weld Bere | Ɔhwɛ bere a wɔde yɛ nneɛma kyinhyia so |
Bere kɔ so no, saa nsɛm yi ma wɔn a wɔyɛ nneɛma no tumi hu nneɛma a ɛrekɔ so, hu huammɔdi ahorow a ebetumi aba ntɛm, na wɔyɛ nhyehyɛe a wɔde besiesie no yiye, na awiei koraa no ɛtew bere a wɔde gyae adwuma a wɔnyɛ ho nhyehyɛe no so.
Sɛnea Wobɛpaw MFDC Spot Welder a Ɛfata ama Kar Dwumadi
Sɛ woretɔ welding mfiri a, sɛ wode w’adwene si bo nkutoo so a, ɛntaa mma sɛ wubenya nea eye sen biara bere tenten-. Ɔkwan a etu mpɔn kɛse ne sɛ wɔbɛhwehwɛ mfiridwuma mu nsɛm atitiriw a ɛka adwumayɛ ne ahotoso so nkɛntɛnso tẽẽ no mu.
Nneɛma a edidi so yi ka nneɛma a ɛho hia sen biara a ɛsɛ sɛ wosusuw ho bere a wɔrepaw nnwinnade no ho.
Mfiridwuma mu Nneɛma Titiriw Nkyerɛkyerɛmu Table
| Parameter a wɔde kyerɛ | Nkyerɛmu | Range a Wɔkamfo Kyerɛ |
|---|---|---|
| Inverter Frequency a Wɔde Di Dwuma | Kyerɛ mprempren control pɛpɛɛpɛ | ~1000 Hz ma kar nhyehyɛe |
| Peak Mprempren Tumi | Ɛnya tumi a wɔde yɛ nugget so nkɛntɛnso | Nneɛma a ɛkorɔn a wɔhwehwɛ ma aluminium |
| Transformer a Ɛyɛ Adwuma Yiye | Ɛka tumi a wɔde di dwuma ne ahotoso | High-efficiency core nneɛma a wɔkamfo kyerɛ |
| Control System Tumi a Wɔde Di Dwuma | Ɛkyerɛ sɛnea nhyehyɛe no yɛ nsakrae | Multi-pulse ne ahoɔden feedback a wɔkamfo kyerɛ |
| Automation Nkitahodi a Wɔde Di Dwuma | Kyerɛkyerɛ nhyehyɛe a ɛne ne ho hyia mu | Mmoa a wɔde ma Profinet anaa EtherCAT na wɔpɛ |
Wɔtaa kyerɛw saa nsusuwii ahorow yi wɔ mfiridwuma ho nkrataa mu na wobetumi de atoto wɔn a wɔde nneɛma ma no nyinaa mu wɔ nhwehwɛmu fã no mu.
Nnwinnade Ho Nyansahyɛ ahorow a Sɛnea Wɔde Di Dwuma Tenae
Kar afã horow hwehwɛ welding su ahorow. Nnwinnadeɛ a wobɛpaw a egyina dwumadie-ahwehwɛdeɛ pɔtee so no boa ma wohwɛ ma adwumayɛ ne bere tenten- ahotosoɔ nyinaa.
| Abisadeɛ | Nneɛma a Wɔkamfo Kyerɛ | Ade Titiriw a Wɔde Si Adwene Si So |
|---|---|---|
| BIW Welding a wɔde yɛ adwuma | Multi-stage mprempren tumidi | Weld a ɛyɛ pɛpɛɛpɛ |
| Battery System Welding a Wɔde Yɛ Nneɛma | Mprempren tumi a ɛkorɔn | Joint density ne nsɔano |
| Chassis Ahobammɔ Nneɛma a Wɔde Yɛ Adwuma | Tumi a wɔde di dwuma bere nyinaa | Gyinabea ne ahotoso a wotumi de ho to so |
Sɛ wode application-driven selection strategy di dwuma a, ɛtaa ma gyinaesi-siyɛ nhyehyɛe no yɛ mmerɛw na ɛtew sɛnea ɛbɛyɛ yiye sɛ mfiri a ɛnhyia no so tew.
Awie
Bere a kar a wɔyɛ kɔ so nya nkɔso no, dwuma a mfiri a wɔde yɛ welding di no resakra sɛnea ɛfata. Nea bere bi na wobu no sɛ adwinnade a egyina hɔ ma nneɛma a wɔyɛ no abɛyɛ ade titiriw wɔ nneɛma a wɔyɛ ho nhyehyɛe a wɔaka abom koraa mu mprempren. Ɛnyɛ weld su nko na weld mfiri adwumayɛ nya nkɛntɛnsoɔ na mmom ɛka sɛnea wɔyɛ no yie, adwumayɛ ho ka, ne bere tenten-afiri mu ahotosoɔ nso.
Efi Body-in-White structures so kosi anyinam ahoɔden kar batere nhyiam ne chassis ahobammɔ afã horow so, .MFDC spot welding mfiridwumarebɛyɛ ano aduru a wɔahyɛ da ayɛ ntɛmntɛm wɔ kar a wɔyɛ no fã ahorow pii mu. Wɔ nnwumakuw a wɔreyɛ nhyehyɛe sɛ wɔbɛma nnwinnade no ayɛ foforo anaasɛ wɔbɛyɛ nneɛma foforo no, sɛ wɔte nhyehyɛe pɔtee a wɔhwehwɛ wɔ dwumadie biara mu ase na wɔsɔ mfiridwuma mu nsɛm titire hwɛ yiye a, ɛbɛtumi atew adwumayɛ mu asiane so kɛseɛ.
Sɛ adetɔ ho gyinaesi ahorow kɔ akyiri sen ɛka a wosusuw ho mfiase no na fi ase de nneɛma di kangyinabea, nhyiam, ne bere tenten- ahotoso, MFDC welding ano aduru a ɛfata a wɔpaw no bɛyɛ sika a wɔde hyɛ mu a ɛde adwumayɛ bo a ɛkɔ so daa ma.
