Okwanjula
Mu bintu ng’eby’emmotoka n’eby’omu bwengula, ebipande by’ebyuma eby’amaanyi amangi-bikozesebwa nnyo olw’obutonde bwabyo obw’ebyuma obulungi. Wabula okuweta ebintu bino kiteeka obwetaavu obw’amaanyi kuebyuma ebiweta ebifo. Okukola obubi kiyinza bulungi okuvaako ensonga nga weld nugget okukutuka n’okufuuwa. Ekiwandiiko kino kijja kwekenneenya ebikulu ebirina okulowoozebwako nga okozesa ebyuma ebiweta ebifo ku bipande by’ekyuma eby’amaanyi amangi- okuva mu ndowooza ey’omugaso.
1. Okufuga okutuufu kwa Welding Parameters okwewala Heat Stress Concentration
Ebipande by’ekyuma eby’amaanyi amangi- (nga ekyuma kya DP, ekyuma kya TRIP) birina obutambuzi bw’ebbugumu obubi, ekivaako ebbugumu okukuŋŋaanyizibwa amangu mu kiseera ky’okuweta, ekivaako okubuguma ennyo mu kitundu oba okunyogoga amangu. Okulongoosa nga oyita mu nkola zino wammanga kirungi:
- Adjust Current and Time Matching: Kozesa pulse welding mode, okugeza, current entono, frequency enkulu, ekiseera ekitono (nga 10kA/0.2 seconds), okukendeeza ku bbugumu eriyingizibwa.
- Enkola y'okuweta mu mitendera: Kozesa enkola ya "step-by-step" spot welding ku bitundu ebinene okwewala okukyukakyuka okuva ku kusengejja ebbugumu.
2. Embeera ya Electrode Tip ekosa butereevu omutindo gwa Welding
Obukaluba obw’amaanyi obw’ebyuma eby’amaanyi amangi-bwangu okwambala ensonga z’obusannyalazo, ekivaako okweyongera kw’okuziyiza okukwatagana. Ebiteeso:
- Londa Ebintu Ebitambuza Ennyo n’Okwambala-Ebiziyiza: Ensonga z’obusannyalazo bwa ekikomo-chromium alloy zigatta obutambuzi bw’ebbugumu n’okuziyiza okwambala, ne byongera ku bulamu bw’okuweereza ebitundu ebisukka mu 30%.
- Okusiba n’okukyusa buli kiseera: Yambala ensonga za electrode n’omudumu ogusenya oluvannyuma lwa buli weld 500-800 okukakasa nti ekifo ekikwatagana kipapajjo; kikyuse mangu singa wabaawo enjatika ez’okungulu oba okwambala okw’amaanyi.
3. Dynamic Balance Wakati wa Pre-Pressure ne Puleesa ya Welding
Okuweta ebipande by’ekyuma eby’amaanyi amangi -kyetaagisa puleesa eya waggulu okukakasa nti bikwatagana nnyo, naye puleesa esukkiridde eyinza okumenya ekintu ekikolebwa. Ebiteeso:
- Siiga puleesa ya 5-8MPa mu kiseera ky’omutendera gw’okusooka puleesa okumalawo ebituli mu kitundu ky’okola.
- Okwongera puleesa okutuuka ku 10-15MPa mu kiseera ky’omutendera gw’okuweta, okulondoola enkyukakyuka za puleesa mu kiseera ekituufu ne sensa okwewala okuweta okw’obulimba olw’obutamala puleesa.
4. Okukakasa okukyusakyusa enkola
Ebika eby’enjawulo eby’ebyuma eby’amaanyi amangi-(okugeza, 340MPa, 590MPa) byetaaga okutereeza okugendereddwamuekyuma ekiweta ebifoebipimo (parameters). Okugeza nga:
- Ekyuma kya 340MPa kiteesa nti kati 8-12kA, obudde bw’okukola 0.15-0.25 sekondi;
- Ekyuma kya 590MPa kyetaaga okwongera ku masanyalaze okutuuka ku 12-15kA n’okukendeeza ku budde bw’okukola okutuuka ku sikonda 0.1-0.15.
Mu bufunzi
Spot welding high-amaanyi ekyuma plates kyetaagisa okufaayo ku parameter precision, electrode okuddaabiriza, n'enkola adaptability. Nga tutereeza mu ngeri ya ssaayansi akasannyalazo, okulongoosa okufuga puleesa, n’okussa omutindo ku nkola z’emirimu, omutindo gw’okuweta guyinza okulongoosebwa n’obulamu bw’ebyuma ne gwongerwako. Mu mbeera y’okukola ebintu ebigezi, okukuguka mu nsonga zino ez’ekikugu kijja kufuuka obusobozi obukulu eri amakampuni agayolekedde okusoomoozebwa kw’okuweta ebintu eby’amaanyi amangi-.
