Yonke into ikhula ngokushisa. Umbuzo obaluleke ngempela ku-aisisekelo sokulinganisaAkukhona ukuthi iyakhula yini — konke kuyakhula — kodwa ukuthi ikhula kangakanani, incane kangakanani, futhi ikhula kangakanani. Lelo gama lokugcina, ngokulinganayo, yilelo abathengi abavame ukungalinaki, futhi ngokuvamile yilona elibangela izinkinga ezinkulu esitolo.
I-Granite ichazwa ngentengoizisekelo zokulinganisa ngokunembaikakhulukazi ngoba i-coefficient yayo yokwanda kokushisa (i-CTE) iphansi uma iqhathaniswa nensimbi noma insimbi ephonswe — ngokuvamile iphakathi kuka-5 kuya ku-8 x 10⁻⁶ nge-°C ye-granite yekhwalithi enhle, uma kuqhathaniswa cishe no-11 kuya ku-13 x 10⁻⁶ nge-°C yensimbi. Ephepheni, lokho kubukeka njengokunqoba okulula. Empeleni, inombolo eseshidini ledatha ilandisa ingxenye yendaba kuphela, futhi onjiniyela abaye baphishekela isilinganiso esiyimfihlakalo babuyela emthonjeni waso bavame ukufunda okunye ngendlela enzima.
Kungani Inombolo ye-CTE ingeyona isithombe esiphelele
Isisekelo se-granite esine-CTE ephansi, efanayo siziphatha ngendlela ebikezelwayo: siyakhula noma sinciphe inani elincane elaziwayo njengoba izinga lokushisa lishintsha, futhi lokho kushintsha kungakhokhelwa kusofthiwe uma izinga lokushisa lilandelwa. Izinkinga ziqala lapho ukunwetshwa kungalingani kuyo yonke ingxenye.
I-Granite iyinhlanganisela yemvelo ye-quartz, i-feldspar, ne-mica, futhi isilinganiso esiqondile samaminerali siyahlukahluka ngokwe-quarry ngisho nange-block. I-slab enesakhiwo sokusanhlamvu esingaguquki ingakhula kancane ngendlela ehlukile kusuka kwesinye isifunda kuya kwesinye ngaphansi kokushintsha kokushisa okufanayo, ilethe ukuphambuka okuncane kodwa kwangempela okungeke kubikezelwe yisibalo esisodwa se-CTE esimaphakathi. Lesi esinye sezizathu zokuthi ukuhambisana kokuthola izinto ezibonakalayo kubalulekile - umenzi odonsa itshe kusuka ku-quarry efanayo kanye ne-block lot batch emva kwe-batch uvame ukukhiqiza izingxenye ezibikezelwa kakhulu ngokushisa kunokuthola okukodwa okuthola amathuba kunoma yimuphi umhlinzeki oshibhile kuleyo kota.
Ukushisa okungalingani kuyanezela kulokhu. Isisekelo se-granite esiseduze nefasitela, ngaphansi kokukhanya okuqondile ohlangothini olulodwa, noma eduze kwethuluzi lomshini elikhiqiza ukushisa kwendawo, asinwebi njengebhulokhi elifanayo - sigoba, noma kunjalo, kancane, ohlangothini olupholile. Eziningi zezicelo zezimboni lokhu kuphambuka akunamsebenzi. Ngomsebenzi we-sub-micron metrology - ama-CMM, izinhlelo zokulinganisa i-laser, amapulatifomu okuhlola ama-semiconductor - kunganele ukushintsha ukubekezelelana kokufunda ngaphandle, futhi kunzima kakhulu ukuxilonga ngoba isisekelo "sisabukeka" sicaba emehlweni ngisho nasekuhlolweni okusheshayo kwendawo.
Lokhu Kusho Ukuthini Ezimweni Zangempela Zelebhu
Izindinganiso eziningi zokulinganisa, okuhlanganisa nezinkomba ze-ISO kanye ne-ASME zokuqinisekisa ipuleti elingaphezulu, zichaza izinga lokushisa elibhekiselwe ku-20°C ngenxa yalesi sizathu - hhayi ngoba i-20°C ikhethekile, kodwa ngoba inikeza wonke umuntu isisekelo esifanayo sokuqhathanisa. Ipuleti eliqinisekiswe ku-20°C futhi elisetshenziswa esitolo esisebenza ku-28°C, ngaphandle kokulungiswa, alikho ngempela elingaphandle kwesilinganiso, kodwa umqhubi ulinganisa ngokungaboni uma izinga lokushisa lingabalwanga endaweni ethile enkambisweni.
Imikhuba embalwa inciphisa njalo amaphutha okushisa ensimini:
- Vumela izingxenye zegranite ukuthi zijwayele indawo yokulinganisa amahora amaningana - ngezinye izikhathi ubusuku bonke ukuze kube nezisekelo ezinkulu - ngaphambi kokulinganisa okubalulekile, njengoba ingaphakathi le-slab ejiyile lilingana kancane kunalokho okusikisela ubuso balo.
- Qhubeka ulinganisa izisekelo kude nokukhanya kwelanga okuqondile, ama-vent e-HVAC, kanye nemishini ekhiqiza ukushisa, noma ngabe izinga lokushisa legumbi elizungezile lifunda kahle ku-thermostat yodonga.
- Bhala izinga lokushisa elizungezile kanye nedatha yokulinganisa ukuze uthole umsebenzi onembile kakhulu, kunokuba ucabange ukuthi “igumbi elilawulwa yisimo sezulu” liyafana ngokushisa kulo lonke.
- I-granite itholakala kubakhiqizi abangakhuluma ngokuqondile ngokufana kokusanhlamvu kanye nokuthola indawo yokumba, hhayi nje isithombe se-CTE esithathwe encwadini yezinto zokwakha.
Inothi Eliwusizo Elivela Ephansi Lokugaya
Sigcina amakamelo ethu alawulwa amazinga okushisa nomswakama ikakhulukazi ngenxa yalokhu — hhayi ikakhulukazi ngenxa yenduduzo, kodwa ngoba ukugaya nokuhlola kokugcina okwenziwa endaweni yokushisa ezinzile, eyaziwayo kukhiqiza izingxenye eziqinile lapho ukuqina kwazo okuqinisekisiwe kugcina khona uma seziphumile esakhiweni. Amakhasimende akha amapulatifomu okuhlola ama-semiconductor noma izakhiwo ze-CMM, ngaphezu kwesisodwa, asicele ukuthi sibhale izinga lokushisa elizungezile ngesikhathi sokulinganisa kokugcina futhi silifake kanye nesitifiketi sokuqina, ukuze ithimba labo le-metrology libe nendawo yokubhekisela ebhalwe phansi yokusebenza kusukela kamuva.
Ukwanda kokushisa ku-granite akuyona inkinga okufanele isuswe ngokuphelele — kuyisici esibonakalayo okumele siphathwe, ngendlela efanayo nokudlidliza noma umswakama okumele kuphathwe ngayo. Abakhiqizi kanye nama-lab abakuphatha njengento eyaziwayo, kunokuba kube yinto ecatshangwa kamuva uma isilinganiso sibonakala singalungile, bavame ukuchitha isikhathi esincane kakhulu belandela amaphutha e-phantom angakaze asebenze nhlobo ngethuluzi.
Isikhathi sokuthunyelwe: Agasti-05-2026