I-granite straightedge "iyisilinganiso esingabonakali" sokuqinisekisa ukunemba emigqeni yokukhiqiza imishini yemishini.

I-granite straightedge "iyisilinganiso esingabonakali" sokuqinisekisa ukunemba emigqeni yokukhiqiza imishini yemishini. Izinto ezibalulekile ezicatshangelwayo zithinta ngqo ukuzinza komugqa wokukhiqiza wonke kanye nezinga lokufaneleka komkhiqizo, okubonakala kakhulu kulezi zilinganiso ezilandelayo:
"Ukungathathelwa indawo" kwereferensi enembile
Ukufakwa kanye nokuqaliswa kwezindlela zokuqondisa amathuluzi omshini kanye namatafula okusebenza emgqeni wokukhiqiza kufanele kusekelwe ekuqondeni (≤0.01mm/m) kanye nokulingana (≤0.02mm/m) komugqa oqondile we-granite. Izinto zayo zemvelo eziphakeme kakhulu (3.1g/cm³) zingagcina ukunemba isikhathi eside, nge-coefficient yokwandisa ukushisa engu-1.5×10⁻⁶/℃ kuphela. Kungakhathaliseki ukuthi umehluko wokushisa omkhulu kangakanani eshabhu, ngeke ubangele ukuthi ireferensi ishintshe ngenxa "yokwanda nokuncipha kokushisa" - lokhu "kuzinza" okulawulwa yizikhonkwane zensimbi, okugwema ngqo amaphutha okuhlanganisa imishini abangelwa izinkomba ezinganembile.
2. "Umdlalo Wokuqina" Wokumelana Nokudlidliza Nokumelana Nokugqokwa
Indawo yokukhiqiza iyinkimbinkimbi, futhi kuvamile ukuthi ama-coolant kanye nama-iron filings achitheke. Ubulukhuni obukhulu be-granite (enobulukhuni be-Mohs obungu-6-7) buyenza imelane nokuklwebheka futhi ngeke igqwale noma ibole ngenxa yama-iron filings njenge-cast iron ruler. Ngesikhathi esifanayo, inokumuncwa okunamandla kwemvelo. Ngesikhathi sokulinganisa, kunganciphisa ukuphazamiseka kokudlidliza okubangelwa ukusebenza kwethuluzi lomshini, okwenza ukufundwa kwe-vernier caliper kanye ne-dial indicator kube okuzinzile kakhudlwana futhi kugweme ukuphambuka kokulinganisa okubangelwa ukuguguleka kwamathuluzi.

"Ukuguqulwa kwe-lexile" kwezimo
Imigqa yokukhiqiza ehlukene inezidingo ezahlukene zobude kanye nezinga lokunemba lombusi:

Ngemigqa yokukhiqiza izingxenye ezincane, khetha irula lebanga eli-0 elinobubanzi obungu-500-1000mm, elilula futhi elihlangabezana nezindinganiso zokunemba.
Imigqa yokuhlanganisa amathuluzi omshini anzima idinga amarula aqondile angu-2000-3000mm angu-00. Umklamo wobuso obusebenza kabili wenza kube lula ukulinganisa okufanayo kwemigqa yokuqondisa ephezulu nephansi ngasikhathi sinye.

4. "Inani Elifihliwe" Lokulawula Izindleko
Irula legranite elisezingeni eliphezulu lingahlala iminyaka engaphezu kweyi-10, okuyinto engabizi kakhulu esikhathini eside kunerula lensimbi (ngomjikelezo wokushintsha weminyaka emi-3 kuya kwemi-5). Okubaluleke kakhulu, linganciphisa isikhathi sokulungisa amaphutha emishini ngokulinganisa okunembile. Ifektri ethile yezingxenye zezimoto ibike ukuthi ngemuva kokusebenzisa amarula egranite, ukusebenza kahle kokushintsha kwemodeli yomugqa wokukhiqiza kanye nokulungisa amaphutha kukhuphuke ngo-40%, kanti izinga lokulahla izinto ezilahliwe lehle lisuka ku-3% laya ku-0.5%. Lesi yisihluthulelo "sokonga imali nokuthuthukisa ukusebenza kahle".

Emigqeni yokukhiqiza, ama-granite ruler awawona nje amathuluzi okulinganisa alula kodwa "abasebenzi bokuhlela ngokunemba". Ukukhetha okulungile kuqinisekisa ukuzethemba kwekhwalithi yomugqa wonke. Angamathuluzi okulinganisa i-granite abalulekile emigqeni yokukhiqiza ngokunemba kwezimboni.