I-Resistance spot welding iyinqubo esetshenziswa kakhulu ezimbonini ezahlukahlukene, ezihlanganisa ezezimoto, i-aerospace, ne-electronics. Le nqubo ihlanganisa ukuhlanganisa izingcezu zensimbi ezimbili noma ngaphezulu ngokusebenzisa ukushisa nokucindezela ezindaweni ezithile. Izinga le-spot weld libalulekile ekusebenzeni okuphelele nokuqina komkhiqizo oqediwe. Kulesi sihloko, sizohlola izici ezintathu ezibalulekile ezithonya i-resistance spot welding nomthelela wazo ohlelweni lokushisela nomkhiqizo wokugcina.
- Ukuqina Kwamanje (Amperage)
Ukuqina kwamanje, kukalwa ngama-ampere, kuyipharamitha eyisisekelo ekushiseleleni indawo yokumelana. Inquma inani lokushisa elikhiqizwa endaweni yokushisela. Uma i-current iphansi kakhulu, kukhiqizwa ukushisa okwanele, okuholela ekushiseni okubuthakathaka nokungaphelele. Ngakolunye uhlangothi, amandla amanje ngokweqile angabangela ukushisa ngokweqile, okuholela ekushiseni noma ekulinyazweni kwezinto zokusebenza.
Ukuze uthole ikhwalithi ephezulu yokushisela, kubalulekile ukukhetha ukuqina kwamanje okufanelekile ngokusekelwe ohlotsheni lwempahla nogqinsi. Onjiniyela kanye nochwepheshe bokushisela kufanele abale ngokucophelela futhi basethe yamanje ukuze baqinisekise ukushisela okungaguquki nokuthembekile.
- Isikhathi sokushisela
Isikhathi sokushisela, esivame ukukalwa ngama-millisecond, singesinye isici esibalulekile ekushiseleni kwendawo yokumelana. Inquma ukuthi i-current igeleza isikhathi esingakanani ezintweni zokusebenza, okuthinta usayizi namandla we-weld nugget—ingxenye encibilikisiwe nehlanganisiwe yezinto zokwakha.
Izikhathi zokushisela ezimfushane zingase zingahlinzeki ngokushisa okwanele ukudala ukushisela okuqinile, kuyilapho izikhathi ezinde ngokweqile zingaholela ekuthambeni ngokweqile kwezinto kanye nokunciphisa amandla okushisela. Ukuthola ibhalansi efanele kubalulekile ekufezeni i-weld enezakhiwo ezifunwayo.
- Ingcindezi (Electrode Force)
Ingcindezi, esetshenziswa ngama-electrode okushisela, idlala indima ebalulekile ekushiseleleni indawo yokumelana. Iletha ama-workpieces eduze, iqinisekisa ukuthintana kahle kukagesi futhi iphromotha ukudluliswa kokushisa. Ukucindezela okusetshenzisiwe kufanele kube ngokwanele ukubamba izinto ndawonye ngesikhathi nangemva kwenqubo yokushisela.
Ukucindezela okunganele kungaholela kwikhwalithi yokushisela empofu, njengoba kungase kubangele izikhala phakathi kwezinto zokusebenza noma ukungena okunganele. Ngakolunye uhlangothi, ukucindezela okukhulu kungakhubaza noma kulimaze izinto, kuthinte kabi ubuqotho besakhiwo.
Sengiphetha, ikhwalithi ye-resistance spot welding ithonywa kakhulu izici ezintathu ezibalulekile: ukuqina kwamanje, isikhathi sokushisela, kanye nengcindezi. Ukulinganisa le mingcele kubalulekile ukuze kuzuzwe amashisela ahlangabezana nezindinganiso ezidingekayo zamandla, ukuqina, nokubukeka. Abasebenza ngokushisela kanye nonjiniyela kufanele bacabange ngokucophelela lezi zici futhi bahlale beziqapha futhi bazilungise ukuze baqinisekise imiphumela engcono kakhulu yokushisela ezinhlelweni ezihlukahlukene.
Isikhathi sokuthumela: Sep-25-2023
