Ho cheselletsa tanka ea oli ea koloi (hangata e entsoe ka-ka tšepe e tlase kapa aluminium) ho sebelisoamochini tjheseletsa seame hloka ho nepahala ho netefatsaho dutla{{0}, ho tšoarella, le -melano e manganga. Ka tlase ke mohato-ka{2}}tataiso ea mehato ea indasteri:
1. Tokisetso ea Boitsebiso le Moralo
- Lintho tse bonahalang:
Litanka tsa Tšepe: Sebelisa-carbon steel (mohlala, SAE 1006/1010) bakeng sa ho cheseha.
Litanka tsa Aluminium: Sebelisa li-alloys tsa 3003/5052 (qoba 7000-letoto).
- Ho Hloekisa Sebaka:
Tlosa ka sehloekisi sa alkaline → Tlosa li-oxide ka borashe bo bosootho (tšepe) kapa etching ea lik'hemik'hale (aluminiamo).
- Moqapi o Kopanetsoeng:
Lap manonyeletso le10-12mm e kopana(bakeng sa ho tjheseletsa seam).
Ho mamellana ha Flange:± 0.2mm.
2. Seam Welding MachineTlhophiso
| Paramethara | Litanka tsa tšepe | Litanka tsa Aluminium |
|---|---|---|
| Welding Current | 15–25 kA | 20–35 kA |
| Matla a Electrode | 3–6 kN | 2–4 kN |
| Lebelo la Welding | 1–3 m/min | 0.5–2 m/min |
| Nako ea Pulse | 10–30 cycles (AC) | 5–15 cycles (MFDC) |
| Ho phodisa | Lijete tsa metsi tsa kantle | Pholiso ea ka hare ea electrode H₂O |
Hlokomela:
- Tšepe: Sebelisa AC kapa MFDC (Medium Frequency Direct Current).
- Aluminium: Ke MFDC feela(ho qoba ho khomarela electrode).
- Li-electrode: Cu-Cr alloy mabili (bophara=1.5× botenya ba leqephe).
3. Ts'ebetso ea Welding Phallo
- Fixture Loading:
Lihalofo tsa tanka ea clamp in asebopeho sa rotary(bakeng sa seams chitja) kapalinear tracker(bakeng sa li-seams tse otlolohileng).
- Tack Welding:
Spot{{0}weld e fella ka50% matlaho thibela tlhophiso e fosahetseng.
- Seam Welding:
Kenya mabili a elektrode → Sebelisa matla → Qala hona joale ho potoloha ha pulse + mabili.
Bohlokoa: Matheba a fetang ka25–30%bakeng sa tiiso e tsoelang pele ea hermetic.
- Post{{0}Weld Cooling:
Fokotsa moea o hatelitsoeng sebakeng sa weld ho fokotsa ho khopama.
4. Litlhahlobo tsa Boleng ba Bohlokoa
- Leak Test:
Pressurize tanka ho0.5 bar→ Kenya ka metsing; hlahloba li-bubble (tlhahlobo ea 100%).
- Teko e Senyang:
Seha mohlala → Lekanyabophara ba nugget(e lokela ho ba E kholo ho feta kapa e lekana le √𝑡, moo 𝑡=botenya ba leqephe).
- Ponahalo/E dae e kenang:
Hlahloba mapetsong, porosity, kapa matšoao a electrode.
5. Tloaelehileng Mefokolo & Litokiso
| Sekoli | Lebaka | Tharollo |
|---|---|---|
| Ho dutla | Phatlalatso e tlase/hona jwale | ↑ Hajoale ka 10%; ↓ lebelo 20% |
| Craters/ Mapetso | Tlhokomelo e mpe ea li-electrode | Apara li-electrode tse ling le tse ling tse 50 |
| Warping | Ho kenya mocheso o feteletseng | ↑ Lebelo; sebelisa pulsed cooling |
| Ho khomarela (Al) | Ho se lumellane ha motsoako oa elektrode | Sebelisa Cu- li-electrode tsa Zr + MFDC |
6. Khokahano ea Boiketsetso (Tlhahiso e Phahameng-Bolumo)
- Lisele tsa Robotic Seam:
Liroboto tsa 6-axis tse nang le lasers ea ho latela seam (mohlala, FANUC ArcMate).
- Ho-Litlhahlobo tsa Line Leak:
Li-sensor tsa ho bola ha khatello e ikemetseng → Hana litanka tse nang le phoso ka hare<20 sec.
Fetosa{{0}matla a hona joale/matla ho ipapisitse le-tebollo ea nako ea 'nete.
7. Polokeho & Boikamahanyo
- Moea oa moea: Ntša mosi o chesellang (tšepe: Mn/Cr oxides; Al: Al₂O₃).
- Litekanyetso:
ISO 3834 (litlhoko tsa boleng bakeng sa fusion welding).
FMVSS 301 (botšepehi ba tanka ea mafura bakeng sa likoloi).
HobanengSeam Welding(bahl. Mekhoa e meng)?
| Mokhoa | Hlahisa | Seam Welding Molemo |
|---|---|---|
| MIG/TIG | Butle; bokgoni{0}bo itshetlehileng | Lebelo le phahameng(3x kapele) |
| Khomarela Bonding | Ho senyeha ha mafura / oli | E hanana le lik'hemik'hale |
| Laser Welding | Theko e phahameng ea thepa | Theko e tlasebakeng sa litanka tse teteaneng |
