Indlela esiqhuba ngayo ngoku i-bicycle yethu iye yaba yeyobuchwephesha ngakumbi, kwaye kunokuthiwa yimodeli yee-bicycles zexesha elizayo. Umzekelo, i-seat post ngoku ingasebenzisa i-Bluetooth ukulawula okungenazingcingo ukuphakamisa. Izinto ezininzi ezingezizo eze-elektroniki nazo zinoyilo oluntsonkothileyo kunye nenkangeleko entle ngakumbi. Ngokuphathelele izinto ezingezizo eze-elektroniki, iteknoloji yethu kunye nobugcisa buye baphucuka. Umzekelo, iintende zezihlangu zethu zokutshixa zazisenziwa ngerabha njengezinto eziphambili, kodwa ngoku uninzi lweentende zezihlangu zokutshixa zisebenzisa i-carbon fiber okanye i-glass fiber njengomzimba oyintloko. Zenziwe ngezinto ezikumgangatho ophezulu, ezinokuphucula kakhulu ubulukhuni be-sole, ukuze ibe nokudluliselwa kwamandla okugqwesileyo kwaye iphucule kakhulu ukusebenza kakuhle kokudluliselwa. Kodwa kukho inxalenye enye, nangona iinjineli ezininzi zizama, ayinakuyitshintsha imeko yayo: i-spoke nipple.

   Kakade ke, ezinye iintlobo zamavili zinezinipho ezenziwe ngokwezifiso ezikhethekileyo ezifanela amavili azo ngcono. Uninzi lweenipho ziya kuba neglue efakwe kwimisonto yespoke kumzi-mveliso, nto leyo enokuthintela ngempumelelo izipoke ekukhululekeni ngenxa yokungcangcazela ngexesha lokusetyenziswa kwebhayisekile, kodwa eyona nto iphambili eyenza ezi nipho yi-aluminium okanye ibrass.

Kangangeminyaka engaphezu kwamashumi amahlanu, ibrass ibisoloko iyinto ephambili ekwenziwa ngayo iingono ezibukhali. Enyanisweni, ibrass yinto eqhelekileyo kakhulu esingqongileyo. Umzekelo, uninzi lwezinto ezisetyenziswa kwizixhobo ezifana neziphatho zomnyango kunye nee-nautical sextants zenziwe ngebrass.

Kutheni ke ngoko iingono zingenziwa ngentsimbi engagqwaliyo njengezipoki? Kwaye phantse akukho ndawo kwiibhayisekile zethu ezenziwe ngethusi njengezinto zokwakha. Ngowuphi umlingo ithusi elinawo ukwenza iingono ezenziwe ngayo? Ithusi ngokwenene liyingxubevange yobhedu, eyenziwe kakhulu yithusi kunye ne-nickel. Inamandla aphezulu, iplastiki entle, kwaye inokumelana kakuhle neendawo ezibandayo nezishushu. Nangona kunjalo, izinto zengono ezipokiweyo aziyothusi ecocekileyo ngokupheleleyo, kuya kubakho umaleko we-oxide emhlophe okanye emnyama phezu komphezulu, ewe, emva kokuba uqweqwe lomphezulu lugugile, umbala wokwenene wethusi uya kutyhilwa.

I-brass ngokwendalo yinto ethambileyo kunentsimbi engatyiwayo, ngoko ke ivumela ukolulwa ngakumbi xa umthwalo ubekwa kuyo. Xa i-spoke isebenza, ihlala ikwizinga ezahlukeneyo zoxinzelelo. Nokuba ukhwela ibhayisekile, okanye wakha ivili, amantongomane kunye neebholiti zibanjwa kunye kuba kukho ukugqwetheka okuncinci kwimisonto njengoko iqinisiwe. Ukubuyela umva kwento ngokuchasene noku kuguquka kwayo yingakho iibholiti zihlala ziqinile, kwaye kutheni kufuneka ngamanye amaxesha ii-washers zokutshixa eziqhekekileyo ukunceda. Ingakumbi xa ii-spoke ziphantsi kwamanqanaba oxinzelelo angaqikelelweyo, ukuphambuka okongezelelweyo okunikezelwa yi-brass kuzinzisa ukungqubana kancinci.

Ukongeza, ibrass sisithambisi sendalo. Ukuba ii-spokes kunye nee-nipples ziyintsimbi engagqwaliyo, kukho ithuba elihle lokuba kuya kubakho iingxaki zokuguguleka. Ukukrala kuthetha ukuba inani elithile lezinto ezisetyenzisiweyo liyakhuhla kwaye linamathele kwenye into, kushiyeke i-crater encinci kwizinto zokuqala kunye neqhuma elincinci kwezinye izinto. Oku kufana nesiphumo se-friction welding, apho amandla agqithisileyo adibaniswa nokuhamba okutyibilikayo okanye okujikelezayo phakathi kweendawo ezimbini, okubangela ukuba zihlangane.

Xa kufikwa ekubopheleleni, ubhedu kunye nentsimbi zizinto ezahlukeneyo, nto leyo ekufuneka ingabi yinto engalunganga ukuba ufuna ukuphepha ukubola. Kodwa ayizizo zonke izinto ezineempawu ezifanayo, kwaye ukudibanisa iintsimbi ezimbini ezahlukeneyo kwandisa amathuba okuba “kubola kwe-galvanic”, nto leyo esiyithethayo xa sithetha ngokubola xa kuhlanganiswa iintsimbi ezahlukeneyo, kuxhomekeke kwi-“anode” yesalathisi ngasinye sezinto ezibonakalayo”. Okukhona ii-anodic indices zeentsimbi ezimbini zifana kakhulu, kokukhona zikhuselekile ukuba zigcinwe kunye. Kwaye ngobuchule, umahluko we-anodic index phakathi kobhedu kunye nentsimbi uncinci kakhulu. Isalathisi se-anode sezinto ezifana ne-aluminium sahlukile kakhulu kweso sentsimbi, ngoko ke asifanelekanga kwi-nipple yee-spokes zentsimbi engagqwali. Kakade ke, abanye abakhweli baya kuba nomdla, kuthekani ukuba abanye abavelisi basebenzisa ii-spokes ze-aluminium alloy ezinee-nipples ze-aluminium alloy? Kakade ke, oku akukho ngxaki. Umzekelo, iseti yamavili e-R0 ye-Fulcrum isebenzisa ii-spokes ze-aluminium alloy kunye nee-nipples ze-aluminium alloy ukuze kuthintelwe ukubola ngcono kunye nobunzima obulula.

Emva kokuthetha ngentsimbi engagqwaliyo kunye ne-aluminium alloy, ewe kufuneka ndikhankanye i-titanium alloy. Enyanisweni, akukho mahluko mkhulu kwi-anodic index phakathi kwe-titanium alloy kunye nee-stainless steel spokes, kwaye zikwafanelekile ukufakwa kwiibhayisekile njengee-spoke caps. Ngokungafaniyo nokutshintshwa kwee-nipples zethusi ngee-aluminium alloy nipples, ezinokunciphisa kakhulu ubunzima, xa kuthelekiswa nee-brass nipples, ii-titanium alloy nipples zinokunciphisa ubunzima ngokusisiseko. Esinye isizathu esibalulekileyo kukuba ixabiso le-titanium alloy liphezulu kakhulu kunele-bross, ingakumbi xa longezwa kwinxalenye ethambileyo efana ne-spoke cap, eya kunyusa ngakumbi ixabiso leseti yevili lebhayisekile. Kakade ke, ii-titanium alloy spoke nipples zineengenelo ezininzi, ezifana nokumelana nokugqwala okungcono kunye nokukhanya okuhle, okumnandi kakhulu. Ii-titanium alloy nipples ezinjalo zinokufumaneka lula kumaqonga afana ne-Alibaba.

Kuyahlaziya ukubona uyilo oluphefumlelwe bubuchwephesha kwiibhayisekile zethu, nangona kunjalo, imithetho yefiziksi isebenza kuyo yonke into, kwaneebhayisekile "zexesha elizayo" esizikhwelayo namhlanje. Ngoko ke, ngaphandle kokuba kufumaneke ezinye izinto ezifanelekileyo kwixesha elizayo, okanye de umntu enze iseti yevili lebhayisekile egcwele ikhabhoni engabizi kakhulu, le bhayisekile yenziwe ngefayibha yekhabhoni kuquka iirimu, iihabhu, iispokes kunye neenipples. Kulapho ke kuphela apho iinipples zebrass ziyabetha khona.