Izinto ezisetshenziswa esisekelo se-granite zithinta kanjani ukuzinza kwaso kwesikhathi eside kanye nokugcinwa kokunemba?

Uhlobo kanye nekhwalithi yezinto zegranite ezisetshenziswa njengesisekelo somshini wokulinganisa ohlanganisiwe (i-CMM) kubalulekile ekuzinzeni nasekugcinweni kokunemba kwesikhathi eside. Igranite iyindlela ethandwayo yokukhetha izinto ngenxa yezakhiwo zayo ezinhle kakhulu njengokuqina okuphezulu, ukwanda okuphansi kokushisa, kanye nokumelana nokuguguleka nokugqwala. Kulesi sihloko, sizohlola ukuthi izinhlobo ezahlukene zezinto zegranite zingathinta kanjani ukuzinza nokunemba kwe-CMM.

Okokuqala, kubalulekile ukuqonda ukuthi akuzona zonke izinto ze-granite ezifanayo. I-granite ingahluka ngokwezakhiwo zayo zomzimba nezamakhemikhali kuye ngokuthi ivela kuphi, izinga, kanye nenqubo yokukhiqiza. Ikhwalithi yezinto ze-granite ezisetshenziswayo izonquma ukuzinza nokunemba kwe-CMM, okubalulekile ekusetshenzisweni nasekukhiqizweni okunembile.

Isici esibalulekile okufanele sicatshangelwe yizinga lokuqukethwe kwe-quartz ku-granite. I-Quartz iyiminerali ebangela ubulukhuni nokuqina kwe-granite. I-granite esezingeni eliphezulu kufanele ibe nokuqukethwe kwe-quartz okungenani okungu-20% ukuqinisekisa ukuthi izinto ziqinile futhi zingamelana nesisindo nokudlidliza kwe-CMM. I-Quartz iphinde inikeze ukuzinza kobukhulu, okudingekayo ukuze kulinganiswe ngokunemba.

Esinye isici okufanele sicatshangelwe ukuthi i-porosity yezinto ze-granite ingakanani. I-granite enezimbobo ingamunca umswakama namakhemikhali, okungaholela ekugqwaleni nasekuguqukeni kwesisekelo. I-granite esezingeni eliphezulu kufanele ibe nezimbobo ezincane, okwenza icishe ingangeni emanzini namakhemikhali. Lokhu kuthuthukisa kakhulu ukuzinza nokunemba kwe-CMM ngokuhamba kwesikhathi.

Ukuphela kwesisekelo se-granite nakho kubalulekile. Isisekelo se-CMM kumele sibe nokuphela kobuso okunezinhlayiya ezincane ukuze kuhlinzekwe ukuqina okuhle nokunemba komshini. Uma ukuqeda kwekhwalithi ephansi, isisekelo singaba nemigodi, imihuzuko, kanye nezinye izinkinga zobuso ezingalimaza ukuqina kwe-CMM.

Ekuphetheni, ikhwalithi yezinto zegranite ezisetshenziswa ku-CMM idlala indima ebalulekile ekuzinzeni kwayo kwesikhathi eside kanye nokugcinwa kokunemba. Igranite esezingeni eliphezulu enokuqukethwe kwe-quartz okufanele, ukubhoboza okuphansi, kanye nokuqedwa kobuso obucwebezelayo kuzohlinzeka ngokuqina nokunemba okungcono kakhulu kwezicelo zokulinganisa. Ukukhetha umhlinzeki othembekile osebenzisa igranite esezingeni eliphezulu ukukhiqiza imishini yakhe yokulinganisa kuzoqinisekisa ukuthi i-CMM ihlala isikhathi eside kanye nokulinganisa ngokunemba okuqhubekayo.