I-Resistance welding iyindlela ethembekile, engabizi kakhulu, futhi ephumelelayo yokuhlanganisa unomphela izingcezu ezimbili noma ngaphezulu zensimbi ndawonye.Ngenkathi ukumelana ne-welding kuyinqubo ye-welding yangempela, ayikho insimbi yokugcwalisa, ayikho igesi yokushisela.Ayikho insimbi eyeqile okufanele isuswe ngemva kokushisela.Le ndlela ilungele ukukhiqizwa ngobuningi.Ama-welds aqinile futhi awabonakali.

Ngokomlando, i-resistance welding isetshenziswe ngempumelelo ukuhlanganisa izinsimbi eziqinile ezifana nensimbi ne-nickel alloys.I-conductivity ephakeme kagesi kanye ne-thermal ye-alloys yethusi yenza i-welding ibe nzima kakhulu, kodwa imishini yokushisela evamile ngokuvamile inamandla okwenza lezi I-alloy inekhwalithi enhle ye-weld egcwele.Ngamasu okushisela afanele, ithusi le-beryllium lingashiselwa lona ngokwalo, liye kwamanye ama-alloys ethusi, nasensimbi.Amaalloyi ethusi angaphansi kuka-1.00mm ubukhulu ngokuvamile kulula ukuwashisela.

Izinqubo ze-resistance welding ezivame ukusetshenziselwa ukushisela izingxenye zethusi ze-beryllium, i-spot welding kanye ne-projection welding.Ubukhulu be-workpiece, i-alloy material, okokusebenza okusetshenzisiwe kanye nesimo esingaphezulu esidingekayo sinquma ukufaneleka kwenqubo efanele.Ezinye izindlela zokushisela ezivame ukusetshenziswa ezisetshenziswa kakhulu, njengokushisela i-flame, i-butt welding, i-seam welding, njll., ayijwayele ukusetshenziselwa ama-alloys ethusi futhi ngeke kuxoxwe ngayo.Ama-alloys e-Copper kulula ukuwafaka.

Izihluthulelo ze-resistance welding zamanje, ingcindezi kanye nesikhathi.Ukwakhiwa kwama-electrode nokukhethwa kwezinto ze-electrode kubaluleke kakhulu ekuqinisekiseni ikhwalithi yokushisela.Njengoba kunezincwadi eziningi ezimayelana nokushisela insimbi, izidingo ezimbalwa zokushisela ithusi le-beryllium ezivezwe lapha zibhekisela ekushunyeni okufanayo.I-Resistance welding akuyona neze isayensi enembile, futhi imishini yokushisela nezinqubo zinomthelela omkhulu kwikhwalithi yokushisela.Ngakho-ke, okwethulwa lapha njengomhlahlandlela kuphela, uchungechunge lwezivivinyo zokushisela lungasetshenziswa ukuze kutholwe izimo zokushisela ezifanele zohlelo ngalunye.

Ngenxa yokuthi izinto eziningi ezingcolisa indawo yokusebenza zinokumelana nogesi okuphezulu, indawo engaphezulu kufanele ihlanzwe njalo.Izindawo ezingcolile zingakhuphula izinga lokushisa lokusebenza kwe-electrode, zinciphise ukuphila kwethiphu ye-electrode, zenze indawo engaphezulu ingasebenziseki, futhi ibangele ukuba insimbi iphambuke endaweni yokushisela.bangela ukushisela okungamanga noma izinsalela.Ifilimu kawoyela elincanyana kakhulu noma isilondolozi sinamathiselwe ngaphezulu, ngokuvamile esingenazo izinkinga nge-resistance welding, futhi i-beryllium yethusi efakwe i-electroplated phezulu inezinkinga ezincane kakhulu ekushiseleni.

I-beryllium yethusi enezithambisi ezinganamafutha ngokweqile noma ezishaywayo noma ezigxiviza zingahlanzwa i-solvent.Uma ingaphezulu ligqwalile kakhulu noma ingaphezulu lifakwe i-oxidized ngokwelashwa kokushisa okuncane, idinga ukugezwa ukuze kukhishwe i-oxide.Ngokungafani ne-copper oxide ebonakala ngokubomvu ngokubomvu, i-beryllium oxide ebonakalayo endaweni yomugqa (ekhiqizwe ukwelashwa ngokushisa kugesi engasebenzi noma enciphisayo) kunzima ukuyibona, kodwa kufanele futhi isuswe ngaphambi kokushiselwa.

I-Beryllium Copper Alloy

Kunezinhlobo ezimbili zama-alloys ethusi e-beryllium.Amandla aphezulu ama-alloys ethusi e-beryllium (Ama-alloys 165, 15, 190, 290) anamandla aphezulu kunanoma iyiphi i-alloy yethusi futhi asetshenziswa kakhulu kwizixhumi zikagesi, ukushintshwa neziphethu.I-conductivity kagesi kanye ne-thermal yale alloy yamandla aphezulu cishe i-20% yethusi elihlanzekile;i-high-conductivity beryllium copper alloys (ama-alloys 3.10 kanye ne-174) anamandla aphansi, futhi ukuqhutshwa kwawo kukagesi cishe ku-50% yaleyo yethusi ehlanzekile, esetshenziselwa izixhumi zamandla kanye nama-relay.Amandla aphezulu e-beryllium alloys yethusi kulula ukumelana ne-weld ngenxa yokuguquguquka kwawo okuphansi kagesi (noma ukumelana okuphezulu).

I-Beryllium yethusi ithola amandla ayo aphezulu ngemva kokwelashwa kokushisa, futhi womabili ama-alloys ethusi e-beryllium anganikezwa esimweni sokushisisa kwangaphambili noma esiphathwe ngokushisa.Imisebenzi yokushisela kufanele ngokuvamile inikelwe esimweni esiphethwe ukushisa.Ukusebenza kwe-welding kufanele kwenziwe ngokujwayelekile ngemuva kokwelashwa kokushisa.Ekushiseleni ukumelana kwe-beryllium yethusi, indawo ethintekile ekushiseni ivamise ukuba yincane kakhulu, futhi akudingekile ukuthi kube nesiqeshana sokusebenzela sethusi se-beryllium sokwelashwa kokushisa ngemva kokushisela.I-alloy M25 iwumkhiqizo wenduku yethusi osika mahhala we-beryllium.Njengoba le alloy iqukethe umthofu, ayifaneleki ukushisela ukumelana.

I-Resistance spot welding

Ithusi le-beryllium linokumelana okuphansi, ukuqhutshwa kwe-thermal okuphezulu kanye ne-coefficient yokunwetshwa kunensimbi.Sekukonke, ithusi le-beryllium linamandla afanayo noma aphezulu kunensimbi.Uma usebenzisa i-resistance spot welding (RSW) i-beryllium yethusi ngokwayo noma ithusi le-beryllium namanye ama-alloys, sebenzisa i-welding current ephezulu, (15%), i-voltage ephansi (75%) kanye nesikhathi esifushane sokushisela (50%) .I-Beryllium yethusi imelana nokucindezela okuphezulu kwe-welding kunamanye ama-alloys ethusi, kodwa izinkinga zingabangelwa ukucindezela okuphansi kakhulu.

Ukuze uthole imiphumela engaguquki kuma-alloys ethusi, imishini yokushisela kufanele ikwazi ukulawula ngokunembile isikhathi nesikhathi samanje, futhi imishini yokushisela ye-AC ikhethwa ngenxa yokushisa kwayo okuphansi kwe-electrode kanye nezindleko eziphansi.Izikhathi zokushisela zemijikelezo engu-4-8 zikhiqize imiphumela engcono.Lapho ushisela izinsimbi ezinama-coefficients afanayo wokunweba, i-welding etshekile kanye ne-overcurrent welding ingalawula ukunwetshwa kwensimbi ukukhawulela ingozi efihliwe yokuqhekeka kokushisela.I-Beryllium yethusi namanye ama-alloys ethusi ashiselwe ngaphandle kokutsheka nokushisela ngokweqile.Uma kusetshenziswa i-welding ethambekele kanye ne-overcurrent welding, inani lezikhathi lincike ekugqineni kwe-workpiece.

Ekushiseleni indawo yokumelana ne-beryllium yethusi nensimbi, noma amanye ama-alloys ukumelana kakhulu, ibhalansi engcono yokushisa ingatholwa ngokusebenzisa ama-electrode anezindawo ezincane zokuthintana ohlangothini olulodwa lwe-beryllium yethusi.Izinto ze-electrode ezithintana ne-beryllium yethusi kufanele zibe ne-conductivity ephakeme kune-workpiece, i-electrode yeqembu le-RWMA2 ifanelekile.Ama-electrode ensimbi aphikisayo (i-tungsten ne-molybdenum) anamaphuzu aphezulu kakhulu ancibilika.Akukho ukuthambekela kokunamathela ku-beryllium yethusi.Ama-electrode angu-13 no-14 ayatholakala.Inzuzo yezinsimbi eziphikisayo impilo yabo ende yesevisi.Kodwa-ke, ngenxa yokuqina kwama-alloys anjalo, umonakalo ongaphezulu kungenzeka.Ama-electrode apholile ngamanzi azosiza ukulawula izinga lokushisa lethiphu futhi andise impilo yama-electrode.Nokho, lapho kushiselwa izingxenye ezacile kakhulu zethusi i-beryllium, ukusetshenziswa kwama-electrode apholise amanzi kungase kuphumele ekucimeni kwensimbi.

Uma umehluko wokujiya phakathi kwethusi le-beryllium kanye nengxubevange ephezulu ye-resistivity mkhulu kuno-5, i-projection welding kufanele isetshenziswe ngenxa yokuntuleka kwebhalansi esebenzayo yokushisa.

I-Resistance projection welding

Izinkinga eziningi ze-beryllium yethusi ekushiseleni indawo yokumelana zingaxazululwa nge-resistance projection welding (RpW).Ngenxa yendawo yayo encane ethintekile ukushisa, imisebenzi eminingi ingenziwa.Izinsimbi ezihlukene zobukhulu obuhlukene kulula ukuzishisela.Ama-electrode abanzi ahlukene kanye nokubunjwa kwama-electrode ahlukahlukene asetshenziswa ekushiseleni kokuqagela ukuze kuncishiswe ukuwohloka nokunamathela.I-electrode conductivity ayiyona inkinga kunasekushiseleleni indawo yokumelana.Okuvame ukusetshenziswa ama-electrode angu-2, 3, no-4-pole;lapho i-electrode iqina, ukuphila isikhathi eside.

Ama-alloys ethusi athambile awangeni ekushiselweni kwe-resistance projection, ithusi le-beryllium liqine ngokwanele ukuvimbela ukuqhekeka kwe-bump ngaphambi kwesikhathi futhi linikeze ukushisela okuphelele kakhulu.Ithusi le-beryllium lingabuye libe yi-projection eshiselwe ebugqileni obungaphansi kuka-0.25mm.Njenge-resistance spot welding, imishini ye-AC ivame ukusetshenziswa.

Lapho i-soldering izinsimbi ezihlukene, ama-bumps atholakala kuma-alloys aphezulu.I-Beryllium yethusi ithambile ngokwanele ukuthi ingashaya noma ikhiphe cishe noma yikuphi ukuma kwe-convex.Kubandakanya izimo ezibukhali kakhulu.I-workpiece yethusi ye-beryllium kufanele yakhiwe ngaphambi kokwelashwa kokushisa ukuze kugwenywe ukuqhekeka.

Njenge-resistance spot welding, izinqubo zokushisela ze-beryllium zethusi zidinga i-amperage ephezulu.Amandla kumele abe namandla okwesikhashana futhi aphakame ngokwanele ukuze enze ukuthi i-protrusion incibilike ngaphambi kokuba iqhekeke.Ingcindezi yokushisela nesikhathi kuyalungiswa ukuze kulawulwe ukuphuka kwamaqhubu.Ingcindezi yokushisela nesikhathi nakho kuncike ku-bump geometry.Ingcindezi yokuqhuma izonciphisa amaphutha e-weld ngaphambi nangemva kokushisela.

Ukuphatha Okuphephile kwe-Berryllium Copper

Njengezinto eziningi ezisetshenziswa ezimbonini, ithusi le-beryllium liyingozi empilweni kuphela uma liphathwa ngendlela engafanele.I-Beryllium yethusi iphephe ngokuphelele esimweni sayo esiqinile esivamile, ezingxenyeni eziqediwe, kanye nemisebenzi eminingi yokukhiqiza.Kodwa-ke, emaphesentini amancane abantu ngabanye, ukuhogela izinhlayiya ezincane kungase kuholele ezimweni ezimbi zamaphaphu.Ukusebenzisa izilawuli ezilula zobunjiniyela, njengemisebenzi yokukhipha umoya ekhiqiza uthuli olucolekile, kunganciphisa ingozi.

Ngenxa yokuthi ukuncibilika kwe-welding kuncane kakhulu futhi akuvuleki, ayikho ingozi ekhethekile lapho inqubo yokushisela i-beryllium yethusi ilawulwa.Uma inqubo yokuhlanza ngomshini iyadingeka ngemva kwe-soldering, kufanele yenziwe ngokudalula umsebenzi endaweni yezinhlayiya ezinhle.