Intshayelelo
Kwimimandla efana neemoto kunye ne-aerospace, iipleyiti zentsimbi eziphezulu{0}}eziphezulu zisetyenziswa kakhulu ngenxa yeempawu zazo ezibalaseleyo. Nangona kunjalo, ukuwelda ezi mathiriyeli kubeka iimfuno eziphezuluoomatshini bokuwelda amabala. Ukusebenza okungafanelekanga kunokukhokelela ngokulula kwimiba efana ne-weld nugget cracking kunye ne-spatter. Eli nqaku liza kuhlalutya iingqwalasela eziphambili xa usebenzisa oomatshini bokuwelda baphezulu{2}}amandla eepleyiti zentsimbi ngokwembono ebonakalayo.
1. Ulawulo oluchanekileyo lwe-Welding Parameters ukuze ugweme ukuxinwa koxinzelelo lobushushu
Amandla aphezulu -iipleyiti zentsimbi (ezifana ne-DP steel, i-TRIP steel) zine-conductivity engafanelekanga ye-thermal, ebangela ukuba ubushushu buqokelele ngokulula ngexesha le-welding, ekhokelela ekugqithiseni kwendawo okanye ukupholisa ngokukhawuleza. Ukuphucula ngezi ndlela zilandelayo kuyacetyiswa:
- Lungisa okwangoku kunye nexesha elihambelanayo: Sebenzisa imodi ye-pulse welding, umzekelo, i-low current, i-frequency ephezulu, ixesha elifutshane (njenge-10kA / 0.2 imizuzwana), ukunciphisa igalelo lokushisa.
- Ubuchule bokuwelda obukwinqanaba: Sebenzisa "inyathelo-nge{1}}ngenyathelo" indlela yokuwelda kwindawo enkulu ukunqanda ukonakala okubangelwa kukuxinana kobushushu.
2. I-Electrode Tip Condition ichaphazela ngqo umgangatho we-Welding
Ukuqina okuphezulu{0}}kweepleyiti zentsimbi eziphakamileyo ziguga ngokulula iingcebiso ze-electrode, ezikhokelela ekwandeni koxhathiso. Iingcebiso:
- Khetha i-Highly Conductive kwaye iNxitywe-IiMathiriyeli eZixhathisayo: Iingcebiso zobhedu{1}}zechromium alloy electrode zidibanisa ukuguquguquka kwe-thermal kunye nokumelana nokunxiba, ukwandisa ubomi benkonzo ngaphezulu kwe-30%.
- Ukugqoka rhoqo kunye noTshintsho: Nxiba iingcebiso ze-electrode kunye nevili lokugaya emva kwe-welds nganye ye-500-800 ukuqinisekisa indawo yoqhagamshelwano olucaba; buyisela ngokukhawuleza xa kuvela iintanda okanye ukuguga okuqatha.
3. Ibhalansi eDynamic phakathi koxinzelelo lwangaphambili{1}}noxinzelelo lwe-Welding
Ukuwelda phezulu{0}}amandla eepleyiti zentsimbi kufuna uxinzelelo oluphezulu lokuqinisekisa uqhagamshelwano olusondeleyo, kodwa uxinzelelo olugqithisileyo lunokutyumza i-workpiece. Iingcebiso:
- Faka i-5-8MPa yoxinzelelo ngexesha lesigaba sangaphambi koxinzelelo ukuphelisa izithuba zomsebenzi.
- Ukwandisa uxinzelelo ukuya kwi-10 - 15MPa ngexesha lesigaba se-welding, ukubeka esweni ukuguquguquka koxinzelelo ngexesha langempela kunye nezinzwa ukuphepha i-welds yobuxoki ngenxa yoxinzelelo olungonelanga.
4. Ukuqinisekiswa koKuguquguquka kweNkqubo
Amabanga awohlukeneyo aphezulu{0}}amandla eepleyiti zentsimbi (umzekelo, 340MPa, 590MPa) afuna uhlengahlengiso olujoliswe kuyo.umatshini wokuwelda indawoiiparamitha. Umzekelo:
- I-340MPa yensimbi incoma i-8-12kA yangoku, ixesha lesenzo 0.15-0.25 imizuzwana;
- I-590MPa yensimbi idinga ukunyuka kwangoku ukuya kwi-12-15kA kunye nexesha elincinciweyo lesenzo kwi-0.1-0.15 imizuzwana.
Ukuqukumbela
I-Spot welding high{0}}amandla eepleyiti zentsimbi ifuna ukuhoywa kwiparameter echanekileyo, ukugcinwa kwe-electrode, kunye nenkqubo yokuziqhelanisa. Ngokuhlengahlengisa ngokwesayensi yangoku, ukulungelelanisa ulawulo loxinzelelo, kunye nokulinganisa iinkqubo zokusebenza, umgangatho we-welding unokuphuculwa kwaye ubomi besixhobo bandiswe. Kumxholo wokwenziwa ngobuchule, ukuqonda la manqaku obugcisa kuya kuba yeyona nto iphambili kumashishini ajongene nemiceli mngeni yezixhobo zokuwelda{3}}amandla aphezulu.
