Isingeniso
Ezindaweni ezifana nezezimoto kanye ne-aerospace, amapuleti ensimbi{0}}anamandla aphezulu asetshenziswa kakhulu ngenxa yezakhiwo zawo ezinhle kakhulu zokuwenza. Nokho, ukushisela lezi zinto kubeka izidingo eziphakemeimishini yokushisela amabala. Ukusebenza okungalungile kungaholela kalula ezinkingeni ezifana nokuqhekeka kwe-weld nugget kanye ne-spatter. Lesi sihloko sizohlaziya ukucatshangelwa okubalulekile lapho usebenzisa imishini yokushisela amabala -amapuleti ensimbi anamandla aphezulu ngokombono ongokoqobo.
1. Ukulawulwa Okunembile Kwezinhlaka Zokushisela ukuze Ugweme Ukugxiliswa Kwengcindezi Yokushisa
Amapuleti ensimbi-anamandla aphezulu (afana ne-DP steel, i-TRIP steel) anokuhanjiswa kahle kwe-thermal, okwenza ukushisa kunqwabelane kalula ngesikhathi sokushisela, okuholela ekushiseni ngokweqile kwendawo noma ekupholiseni ngokushesha. Ukuthuthukisa ngokusebenzisa izindlela ezilandelayo kuyanconywa:
- Lungisa Ukufaniswa Kwamanje Nesikhathi: Sebenzisa imodi ye-pulse welding, isb, i-low current, imvamisa ephezulu, isikhathi esifushane (njengemizuzwana engu-10kA/0.2), ukuze unciphise okokufaka ukushisa.
- I-Staged Welding Strategy: Sebenzisa indlela yokushisela indawo "yesinyathelo--ngesinyathelo" ezindaweni ezinkulu ukuze ugweme ukuwohloka okubangelwa ukugxila kokushisa.
2. Isimo Sethiphu ye-Electrode Sithinta Ngokuqondile Ikhwalithi Ye-Welding
Ukuqina okuphezulu-kwamapuleti ensimbi aqinile kuguga kalula amathiphu e-electrode, okuholela ekwenyukeni kokumelana nokuxhumana. Iziphakamiso:
- Khetha Izinto Ezisebenza Kakhulu Nezigqokile-Izinto Ezingazweli: Amathiphu e-electrode yethusi-i-chromium alloy ahlanganisa ukuguquguquka kwe-thermal nokumelana nokuguga, andise impilo yesevisi ngaphezu kuka-30%.
- Ukugqoka Okuvamile Nokushintsha: Gqoka amathiphu e-electrode ngesondo lokugaya ngemva kokushisela kwawo wonke ama-500-800 ukuze uqinisekise indawo yokuxhumana eyisicaba; buyisela ngokushesha uma kuvela imifantu noma ukuguga okukhulu.
3. Ibhalansi Eguqukayo Phakathi Kokucindezela Kwangaphambi-Nengcindezi Yokushisela
Ukushisela{0}}amapuleti ensimbi anamandla aphezulu kudinga ingcindezi ephezulu ukuze kuqinisekiswe ukuthintana eduze, kodwa ukucindezela okukhulu kungase kuchoboze isiqeshana somsebenzi. Iziphakamiso:
- Faka ingcindezi engu-5-8MPa ngesikhathi sesigaba sangaphambi kwengcindezi ukuze ukhiphe izikhala zomsebenzi.
- Khulisa ingcindezi ibe ngu-10-15MPa ngesikhathi sesigaba sokushisela, ukuqapha ukushintshashintsha kwengcindezi ngesikhathi sangempela ngezinzwa ukuze ugweme ukushisela okungamanga ngenxa yokucindezela okunganele.
4. Ukuqinisekisa Ukuzivumelanisa Nenqubo
Amabanga ahlukene-amapuleti ensimbi aqinile (isb, 340MPa, 590MPa) adinga ukulungiswa okuhlosiweumshini wokushisela indawoimingcele. Ngokwesibonelo:
- Insimbi engu-340MPa incoma i-8-12kA yamanje, isikhathi sesenzo imizuzwana engu-0.15-0.25;
- Insimbi engu-590MPa idinga ukwanda kwamanje kuya ku-12-15kA kanye nesikhathi sesenzo esifushane sibe imizuzwana engu-0.1-0.15.
Isiphetho
I-Spot welding high{0}}amapuleti ensimbi anamandla adinga ukunakwa kokunemba kwepharamitha, ukunakekelwa kwama-electrode, kanye nokuvumelana nezimo. Ngokulungisa ngokwesayensi yamanje, ukuqinisa ukulawula kwengcindezi, kanye nokumisa izinqubo zokusebenza, ikhwalithi yokushisela ingathuthukiswa futhi inwetshwe ukuphila kwemishini. Kumongo wokukhiqiza okuhlakaniphile, ukwazi lawa maphuzu wobuchwepheshe kuzoba ikhono eliyinhloko lezinkampani ezibhekene nezinselelo zokushisela{3}}izinto ezisebenza ngamandla.
