Isingeniso
Ekwenziweni kwesimanje, ubuchwepheshe bokushisela, ikakhulukazi ubuchwepheshe bokushisela amabala, budlala indima ebalulekile ekuhlanganiseni kwezinto ezibonakalayo. Ikakhulukazi, amashidi ensimbi{1}anamandla aphezulu asetshenziswa kakhulu ezimbonini zezimoto, ze-aerospace, nezisindayo ngenxa yamandla awo amahle kakhulu nezici ezingasindi. Kodwa-ke, ngenxa yezakhiwo zawo ezibonakalayo, amashidi{3}}anamandla aphezulu abeka izidingo eziphakeme enqubweni yokushisela. Lesi sihloko sizogxila ekusetshenzisweni kweimishini yokushisela amabala aphakathi nendawoekushiseleni amashidi{0}}amandla aphezulu, uhlola indlela yokuthola{1}}ikhwalithi ephezulu yokushisela amashidi{2}}amandla aphezulu ngokusebenzisaimishini yokushisela amabala aphakathi nendawo.
I. Isimiso Nezinzuzo Zemishini Yokushisela Imvamisa Emaphakathi
- Imishini yokushisela indawo yefrikhwensi emaphakathiukukhiqiza ukushisa ngokusebenzisa amandla aphezulu ngokushesha phakathi kwama-electrode, ngaleyo ndlela kuzuzwe ukushiselwa kwezinto zokusebenza. Imvamisa yokusebenza kwazo imvamisa isukela kuma-kilohertz ambalwa kuye kwamakhulu ambalwa e-kilohertz. Uma kuqhathaniswa nemishini yokushisela amabala aphansi{2}}evamile, imishini yokushisela indawo eyi-middle frequency inikeza izinzuzo ezifana nekhwalithi ephezulu yokushisela, ukushisa okuncane{3}}indawo ethintekile, kanye ne-welding deformation encane.
- Ikakhulukazi, lapho ishisela-amashidi aqinile, imishini yokushisela amabala aphakathi nendawo ingagxilisa ngokushesha ukushisa endaweni yokushisela, inciphise kakhulu ukushisa{1}}indawo ethintekile, ngaleyo ndlela igweme ngempumelelo izinkinga zokonakala ezibangelwa ukushisisa konke kwento. Ukwengeza, imishini yokushisela indawo yefrikhwensi emaphakathi inikeza ukulawula okunembe kakhudlwana kwe-welding current, okuvumela ukulungiswa okuvumelana nezimo kwamapharamitha wokushisela okusekelwe ezintweni ezihlukene nobukhulu bamashidi{3}}amandla aphezulu ukuze kutholwe imiphumela emihle yokushisela.
II. Izinselele zokushisela-Zamashidi Amandla Aphezulu
- Amashidi{0}amandla aphezulu, ikakhulukazi lawo asetshenziswa ekulayisheni{1}izingxenye ezithwele, ngokuvamile anamandla aphezulu, aqine kakhulu, nokusebenza okuhle kokukhathala. Kodwa-ke, lezi zinto zibuye zibhekane nezinselelo ezithile ngesikhathi senqubo yokushisela. Okokuqala, amashidi{4}amandla aphezulu azwela kakhulu ekushiseni, okuwenza athambekele ekuqhekekeni kokushisela kanye nokufingqa. Okwesibili, ngenxa yokuqina okuphezulu kwamashidi{6}}amandla aphezulu, izindlela zokushisela zendabuko ngokuvamile ziholela ekungeneni kwamandla ephoyinti lokushisela noma ukuwohloka kwe-welding.
III. Amapharamitha okucubungula we-Spot Welding High{1}}AmaSpredishithi Amandla aneMishini yokushisela ye-Medium Frequency Spot
Ukuqinisekisa{0}ikhwalithi ephezulu yokushisela amashidi{1}amandla aphezulu ngaphansiimishini yokushisela amabala aphakathi nendawo, imingcele yenqubo ebalulekile elandelayo idinga ukulawulwa ngokucophelela:
- I-Welding Yamanje Nesikhathi?
I-welding current kanye nesikhathi somshini wokushisela i-medium frequency spot welding yizona zimiso ezibaluleke kakhulu. Ngokuvamile, usayizi ofanelekile wamanje kanye nesikhathi sokushisela kudingeka kukhethwe ngokusekelwe kubukhulu nezici ezibonakalayo zeshidi{1}}lamandla aphezulu. Isikhathi samanje esiningi kakhulu noma eside kakhulu singabangela ukushisa ngokweqile noma ukushiswa{3}, kuyilapho isikhathi samanje esinganele noma esifushane kakhulu singaholela ekungeneni kwamandla ephoyinti lokushisela.
- I-Electrode Pressure?
Ukucindezela kwe-Electrode nakho kuthinta kakhulu ikhwalithi yokushisela. Ukucindezela okufanelekile kwe-electrode kuqinisekisa ukuthintana okuhle kwezinto ngesikhathi senqubo yokushisela, ukuthuthukisa ukuqhutshwa kwe-conductivity kanye ne-thermal conductivity ye-weld point. Ngesikhathi esifanayo, ukucindezela okufanelekile kungavimbela ngempumelelo i-welding deformation.
- Ukulandelana Kwe-Welding kanye Nendlela?
Ezimweni ezidinga amashidi amaningi wokushisela{0}}amandla aphezulu, ukulandelana okunengqondo kwe-welding kunganciphisa ukuwohloka kwe-welding futhi kuthuthukise ikhwalithi iyonke ye-welding yesakhiwo. Ukulandelana kwe-welding, i-jump welding evamile kwamukelwa ukunciphisa ukugxila kwengcindezi yokushisela.
IV. Izinyathelo Zokuqaphela Ekusebenzeni Okungokoqobo
- Preheating Treatment?
Kumashidi aqinile-aphakeme kakhulu, ukwelashwa kokushisisa kuqala kungenziwa ngaphambi kokushisela okusemthethweni ukuze kuncishiswe ukucindezelwa kokushisa ngesikhathi senqubo yokushisela nokuvimbela ukwenzeka kwemifantu yokushisela.
- Ukuthuthukisa Ipharamitha?
Ekusebenzeni okungokoqobo, ngokusekelwe-esisetshenziswa seshidi lamandla aphezulu nokuqina, imingcele yokushisela efana neyamanje, isikhathi, nengcindezi idinga ukuthuthukiswa ngokuqhubekayo ngokusebenzisa i-trial welding ukuze kutholwe isisombululo sokushisela esingcono kakhulu.
- Ukunakekelwa Kwezisetshenziswa?
Ngesikhathi sokusebenzisa i-medium frequency spot welding umshini, ama-electrode kudingeka ahlolwe njalo ukuthi awagugile futhi ashintshwe ngokushesha ukuze kuqinisekiswe isimo sokusebenza esiphelele semishini kanye nekhwalithi yokushisela isiqinisekiso.
Isiphetho?
Imishini yokushisela indawo yefrikhwensi emaphakathibabe nezinzuzo ezibalulekile kanye namathemba okusebenza kumashidi wokushisela amabala aphezulu-anamandla. Ngezilungiselelo ezinengqondo zepharamitha kanye nokulawulwa kwenqubo,{2}}ikhwalithi ephezulu yokushisela amashidi{3}}amandla aphezulu kungafinyelelwa, kuhlangatshezwane nezidingo eziphezulu zokwenziwa kwesimanje kokushisela ukusebenza kahle kanye nekhwalithi. Ngokuzayo, ngokuthuthuka okuqhubekayo kwesayensi yezinto kanye nobuchwepheshe bokushisela, ukusetshenziswa kwemishini yokushisela indawo ephakathi nendawo{5}}kuzosakazeka kakhulu, kunikeze ukwesekwa okuqinile kokuguqulwa{6}}kokusebenza ngempumelelo okuphezulu kokukhiqiza.
