Ɔsoro-Quality Spot Welding a Die-Cast Aluminium|Nnwinnade a Wɔhwehwɛ ne Akwankyerɛ a Wɔde Di Dwuma

Wɔde die-cast aluminum (ne aluminium alloys) di dwuma kɛse wɔ kar, ɛlɛtrɔnik, mfiri, ne adansi mu esiane n’ahoɔden a ɛkyɛn so-to-mu duru, nsɛe a ɛko tia, ne ɔhyew a ɛkɔ so nti.
Nanso, saa su koro yi ara ma die-cast aluminium yɛ den kɛse sɛ wobehu weld sen dade anaa dade a ɛnyɛ den. Nsɛnnennen atitiriw bi ne:

• Ɔhyew a ɛkɔ soro a ɛkɔ soro– ɔhyew no pete ntɛmntɛm na entumi nkɔ so nhyɛ weld beae no.
• Ɛlektrik ahoɔden a ɛba fam– hwehwɛ sɛ welding currents a ɛkorɔn kɛse.
• Oxide a ɛba ntɛmntɛm– aluminium oxide yɛ anyinam ahoɔden a ɛbɔ ho ban na esiw current flow a ɛyɛ den kwan.
• Low melting temperature & ɔhyew ntrɛwmu a ɛkorɔn– ɛma asiane a ɛwɔ hɔ sɛ electrode bɛbata ho, asɛe, ne nugget a ɛnkɔ so pɛpɛɛpɛ no yɛ kɛse.

Enti, sɛ wobɛnya spot welds a ɛyɛ den, a ɛyɛ den wɔ die-cast aluminum so a, ɛhia nnwinnadeɛ a wɔayɛ no yie pɔtee ama aluminiumwelding a ɛko tia.

1. Electrode Nneɛma & Geometry

• Electrode Nneɛma a Wɔde Yɛ Adwuma

1. Fa kɔbere a wɔde afrafra a ɛwɔ ahoɔden a ɛkɔ soro-a ɛyɛ hyew-a ɛyɛ hyew-a ɛkɔ soro a RWMA kamfo kyerɛ di dwuma.
2. Sɛ wopɛ aluminium welding a, .RWMA Adesuakuw 1mpɛn pii no wɔpɛ alloys esiane sɛ ɛyɛ adwuma yiye nti.

• Electrode Anim Geometry a Wɔde Yɛ Adwuma

1. Radius / domed afiri a wɔde yɛ nneɛma: boa ma wobubu oxide film na ɛma mprempren density no yɛ kɛse.
2. Elektrode a ɛyɛ tratraa: ɛfata bere a ɛsɛ sɛ wɔtew soro agyiraehyɛde so anaasɛ bere a wɔreyɛ welding wɔ mmeae akɛse a ɛne wɔn ho wɔn ho di nkitaho no.

• Electrode a Wɔde Siesie Nneɛma

1. Aluminium welding ma electrode efĩ ntɛmntɛm na ne nsusuwii sesa. Electrode dressing a wɔyɛ no daa-welds ɔhaha pii biara-yɛ ahyɛde.
2. Aluminium-welders titiriw pii ka honhyehyɛe ahorow a wɔde siesie electrode a ɛnyɛ adwuma.

2. Cooling System & Ɔhyew a Wɔde Di Dwuma

Aluminium spot welding de ɔhyew adesoa a ɛkorɔn yiye to electrode ahorow no so.

• Nsu-nwini electrode ahorow no yɛ ahyɛde.
• Nsuo a wɔtaa kamfo kyerɛ sɛ ɛsen:0.5–1.5 gal/simma (2-6 L/simma) ..
• Hwɛ nsu hyew ne nhyɛso so na ama electrode hyew akɔ so ayɛ nea ɛyɛ den.
• Wɔ mmeae a awɔw wom no, hwɛ hu sɛanti-freeze ahobammɔne system drainage a ɛfata na wɔakwati sɛ wɔbɛsɛe.

Onwini nhyehyɛe a etu mpɔn ma electrode nkwa nna trɛw kɛse na ɛma weld no yɛ pɛpɛɛpɛ.

Aluminium spot welding a ɛkorɔn-gyina nnwinnade a ɛfata nko so na mmom egyina parameter control a ɛyɛ pɛpɛɛpɛ so nso.

Nneɛma atitiriw a wɔde gyina hɔ ma no bi ne:

• Welding Mprempren

1. Aluminium hwehwɛ sɛ anyinam ahoɔden a ɛkɔ soro sen dade.
2. Wɔ ~1.2 mm aluminium krataa, nyansahyɛ ahorow a wɔtaa de ma no du:22,000–28,000 A (22–28 kA) na ɛwɔ hɔ..

• Ɛlektrɔnik Tumi

1. Ɛsɛ sɛ wɔhwɛ hu sɛ ɛne ne ho di nkitaho a ɛyɛ pintinn na ɛpia mframa/oxide layers a ɛnsɛe ɔfã no.
2. Tumi a eye no gu ahorow wɔ ne kɛse ne ne geometry mu na ɛsɛ sɛ wɔyɛ no yiye-tuned.

• Welding Bere a Wɔde Yɛ Adwuma

1. Fa di dwumaweld bere tiaa paaesiane ɔhyew a aluminium no sɛe ntɛmntɛm nti.
2. Mpɛn pii no, ɛyɛ milisekɔn du du (ms) anaa kyinhyia kakraa bi pɛ.

• Squeeze Bere & Kura Bere

1. Bere a Wɔde Piapia: ɛkyekyere afã horow no ansa na mprempren asen, na ɛboa ma oxide film no bubu.
2. Kura Bere: kura nhyɛso mu bere a mprempren agyae kosi sɛ nugget no bɛyɛ den, na ɛhwɛ hu sɛ weld ahoɔden.

• Multi-pulse / Multi{1}}anamɔn Welding

1. Sɛ wopɛ aluminium a ɛyɛ den, ɛyɛ den, anaasɛ ɛyɛ den-hardness die-a, multi-stage process (pre-heat → main weld → forge) ma nugget su tu mpɔn na ɛtew sintɔ ahorow so.

Wɔkamfo kyerɛ denneennen sɛ wɔmfa awelding nhyehyɛema nneɛma biara, ne kɛse, ne nnwinnade nhyehyɛe.

Wɔ aluminium resistance spot welding, nnwuma gyinapɛn ne:ISO 18595:2021 - Resistance Spot Welding a wɔde Aluminium ne Aluminium ayɛ Nneɛma a wɔde afrafra

Ɛfa 0.6–6 mm aluminium krataa, extrusions, ne castings (a die-cast aluminium ka ho).

Nsɛntitiriw:

• Kamfo kɔbere a wɔde afra electrode te sɛ ISO 5182 Class A2/2 kyerɛ.
• Ɛfa bench welders, welding atuo, robɔt nhyehyɛe, ne multi-spot nhyehyɛe ho.
• Kyerɛ akwan a wɔfa so sɔ nugget kɛse, ahoɔden, ne weld su hwɛ.
• Sɛ wode nnwinnadeɛ a ɛne ISO- hyia di dwuma a, ɛma ɛyɛ mmerɛ sɛ wobɛnya adwumayɛ a ɛyɛ den na woadi QC ahwehwɛdeɛ ho dwuma.

1. Ɛlektrode a Wɔhwɛ So

Esiane sɛ aluminium gu electrode ahorow ho fĩ na ɛsɛe no ntɛmntɛm nti, ɛsɛ sɛ wɔde dressing anaa resharpening ba wɔ bere pɔtee bi mu (sɛ nhwɛso no, welds 500–1,000 biara).

2. Cooling System a Wɔhwɛ So

Ani di akyire:

• Nsu a ɛsen no dodow
• Nsu mu hyew
• Nsuo nhyɛsoɔ
• Siw ɔhyew a ɛboro so, nsenia a ɛbɛboaboa ano, anaasɛ awɔw a ɛbɛsɛe no ano.

3. Ahobammɔ & Nneɛma a Atwa Yɛn Ho Ahyia Ho Nhwɛso

• Fa wusiw a woyi fi mu yiye di dwuma ma dade oxides.
• Hwɛ sɛ anyinam ahoɔden asase a ɛfata ne ahoɔden a ɛyɛ den a ɛyɛ abiɛsa-fase.
• Kwati voltage nsakrae, a ɛka weld consistency kɛse.

4. Quality Kyerɛwtohɔ & Traceability

Siesie logs ma:

• Welding parameters a wɔde yɛ nneɛma
• Electrode a wɔde siesie nneɛma
• Cooling nhyehyɛe no tebea
• Weld sɔhwɛ mu aba (tensile, peel, anaa destructive sɔhwɛ) .

Eyi ho hia na ama wɔatumi ayɛ nneɛma pii a ɛyɛ den.

5. Mfiridwuma Ho Nsɛm a Wɔakamfo Akyerɛ (Nhwehwɛmu) .

Awie

Spot welding die-cast aluminium yɛ nea ɛyɛ den koraa sen welding dade. Odi nkonim hwehwɛ sɛ:

• Electrode ahorow a wɔayɛ no soronko
• Nsuo-onwini ne nsiesie nhyehyɛeɛ a ɛyɛ den
• Parameter control a ɛyɛ pɛpɛɛpɛ
• Sɛnea wodi ISO 18595 so
• Nneɛma a ɛyɛ papa ho nhyehyɛe a ɛkɔ so

Ɛdenam nnwinnade a ɛfata, nhyehyɛe sohwɛ, ne nsiesie a wɔbɛka abom so nkutoo na wɔn a wɔyɛ no betumi anya welds a ɛyɛ den, a wotumi yɛ no mpɛn pii wɔ die-cast aluminium so, titiriw wɔ nnwuma a ɛho hia kɛse te sɛ kar ne ɛlɛtrɔnik mfiri mu.

Di nkitaho mprempren