Kwintsimi yokulinganisa ngokuchanekileyo, i-granite echanekileyo yeqonga kunye nokuzinza kwayo okugqwesileyo, ubunzima obuphezulu kunye nokumelana nokunxiba kakuhle, ibe yinkxaso efanelekileyo yesiseko kwimisebenzi emininzi yokulinganisa ngokuchanekileyo. Nangona kunjalo, ukuguquguquka kweqondo lokushisa kwizinto zokusingqongileyo, ezifana "nombulali ochanekileyo" ofihliweyo ebumnyameni, unempembelelo engathandabuzekiyo ekuchanekeni komlinganiselo weqonga lokuchaneka kwegranite. Kubaluleke kakhulu ukuphanda umqobo weempembelelo nzulu ukuze kuqinisekiswe ukuchaneka nokuthembeka komsebenzi wokulinganisa.
Nangona i-granite iyaziwa ngokuzinza kwayo, ayikhuselekanga kwiinguqu zeqondo lokushisa. Amacandelo ayo aphambili yi-quartz, i-feldspar kunye nezinye iiminerali, eziza kuvelisa ukwanda kwe-thermal kunye ne-contraction phenomenon kumaqondo ahlukeneyo okushisa. Xa ubushushu be-ambient buphakama, iqonga lokuchaneka kwegranite liyafudumala kwaye landiswa, kwaye ubungakanani beqonga buya kutshintsha kancinci. Xa iqondo lobushushu lihla, liya kuncipha libuyele kwimeko yalo yangaphambili. Utshintsho olubonakala luncinci lunokwandiswa lube yimiba ephambili echaphazela iziphumo zomlinganiso kwimilinganiso echanekileyo.
Ukuthatha isixhobo esiqhelekileyo sokulinganisa isixhobo esihambelana neqonga legranite njengomzekelo, kumsebenzi wokulinganisa ngokuchanekileyo, iimfuno zokuchaneka komlinganiselo zihlala zifikelela kwinqanaba le-micron okanye nangaphezulu. Kucingelwa ukuba kwiqondo lokushisa eliqhelekileyo le-20 ℃, iiparameters ezahlukeneyo zeqonga zikwimeko efanelekileyo, kwaye idatha echanekileyo inokufumaneka ngokulinganisa i-workpiece. Xa ubushushu be-ambient buguquguquka, imeko ihluke kakhulu. Emva kwenani elikhulu leenkcukacha-manani zovavanyo kunye nohlalutyo lwethiyori, phantsi kweemeko eziqhelekileyo, ukuguquguquka kweqondo lokushisa lokusingqongileyo kwe-1℃, ukwandiswa komgca okanye ukunyanzeliswa kweplani yegranite echanekileyo malunga ne-5-7 × 10⁻⁶/℃. Oku kuthetha ukuba iqonga legranite elinobude becala lemitha eyi-1, ubude becala bunokutshintsha ngama-microns ama-5-7 ukuba ubushushu buguquka ngo-1 ° C. Kwimilinganiselo echanekileyo, olo tshintsho kwisayizi lwanele ukwenza iimpazamo zokulinganisa ngaphaya koluhlu olwamkelekileyo.
Ngomsebenzi wokulinganisa ofunekayo ngamanqanaba ahlukeneyo okuchaneka, impembelelo yempembelelo yokutshintsha kweqondo lokushisa nayo iyahluka. Kumlinganiselo ochanekileyo ochanekileyo, njengomlinganiselo wesayizi wamalungu omatshini, ukuba imposiso yokulinganisa evumelekileyo ingaphakathi kwe-± 20 microns, ngokobalo lwe-coefficient yolwandiso olungentla, ukuguquguquka kweqondo lokushisa kufuneka kulawulwe ngaphakathi koluhlu lwe-± 3-4 ℃, ukuze kulawulwe impazamo yokulinganisa okubangelwa ukuguqulwa kobungakanani beqonga kwinqanaba elamkelekileyo. Kwiindawo ezineemfuno ezichanekileyo ezichanekileyo, ezifana nenkqubo yokulinganisa inkqubo ye-lithography kwi-chip ye-semiconductor, impazamo ivunyelwe ngaphakathi kwe-± 1 micron, kwaye ukuguquguquka kweqondo lokushisa kufuneka kulawulwe ngokungqongqo ngaphakathi kwe-± 0.1-0.2 ° C. Emva kokuba ukufudumala kweqondo lokushisa kudlula lo mgca, ukwandiswa kwe-thermal kunye nokuchithwa kwe-contraction yeziphumo ze-granite ezinokuthi zithintele iziphumo, iqonga legranite linokuthi lithintele i-designation. ukwenziwa kwetshiphu.
Ukuze ujongane neempembelelo zokuguquguquka kweqondo lokushisa kwi-ambient yokulinganisa ukuchaneka kweqonga lokuchaneka kwegranite, amanyathelo amaninzi ahlala amkelwa kumsebenzi osebenzayo. Ngokomzekelo, izixhobo zokushisa ezichanekileyo ezichanekileyo zifakwe kwindawo yokulinganisa ukulawula ukuguquguquka kweqondo lokushisa kuluhlu oluncinci kakhulu; Imbuyekezo yeqondo lokushisa iqhutyelwa kwidatha yokulinganisa, kwaye iziphumo zokulinganisa zilungiswa nge-algorithm yesofthiwe ngokwe-coefficient yokwandisa i-thermal yeqonga kunye nokutshintsha kwexesha langempela lokushisa. Nangona kunjalo, kungakhathaliseki ukuba ngawaphi amanyathelo athathiweyo, ukubamba ngokuchanekileyo kwempembelelo yokuguquguquka kweqondo lokushisa kwi-ambient yokuchaneka komlinganiselo weqonga lokuchaneka kwegranite yisiseko sokuqinisekisa umsebenzi wokulinganisa ochanekileyo nothembekileyo.
Ixesha lokuposa: Apr-03-2025