Choyamba, ubwino wa maziko a granite
1. Kulimba kwambiri komanso kukhazikika
Granite ili ndi kachulukidwe kakakulu (2.6-3.1g /cm³), ndipo modulus ya Young (elastic modulus) imatha kufika 50-100 GPa, yokwera kwambiri kuposa chitsulo wamba (pafupifupi 200 GPa), koma chifukwa cha kapangidwe kake ka kristalo ka isotropic, ilibe kusintha kwa pulasitiki komwe kumagwiritsidwa ntchito kwa nthawi yayitali. Poyerekeza ndi zipangizo zachitsulo, granite thermal expansion coefficient ndi yotsika kwambiri (pafupifupi 5×10⁻⁶/℃), m'malo osinthasintha kutentha amatha kukhalabe okhazikika bwino, kupewa chifukwa cha kutentha kutentha kumachepetsa kulondola kwa zida.
2. Kuchepetsa kugwedezeka kwabwino kwambiri
Kapangidwe ka galasi lamkati mwa granite kali ndi damping yamkati yambiri, yomwe imatha kuyamwa bwino kugwedezeka kwa ma frequency ambiri ndikuchepetsa kugwedezeka. Poyerekeza ndi maziko achitsulo, granite ili ndi mphamvu yochepetsera kugwedezeka kwamphamvu yomwe ili pamtunda wa 20Hz-1kHz, zomwe zimapangitsa kuti malo oyamba "oyera" akhale ndi makina odzipatula ogwirira ntchito komanso kuchepetsa kukakamizidwa kwa kayendetsedwe ka ntchito pambuyo pake.
3. Kukana dzimbiri, kosakhala ndi maginito, kugwiritsidwa ntchito kwakukulu
Kukhazikika kwa mankhwala a granite, kukana dzimbiri ndi asidi ndi alkali, sikuchita dzimbiri kapena kusungunuka, koyenera chipinda choyera, chinyezi chambiri kapena malo owononga. Kuphatikiza apo, granite ndi chinthu chopanda maginito, sichingasokoneze zida zolondola (monga maikulosikopu ya ma elekitironi, zida zoyezera maginito, ndi zina zotero), choyenera kugwiritsidwa ntchito poyang'ana kwambiri maginito.
4. Moyo wautali wautumiki, mtengo wotsika wokonza
Kuuma kwa granite ndi kwakukulu (kuuma kwa Mohs 6-7), kukana kutopa, kugwiritsidwa ntchito kwa nthawi yayitali sikophweka kuvala kapena kusintha, moyo wautumiki ukhoza kufika zaka zoposa 20. Poyerekeza ndi zipangizo zachitsulo, sizifuna chithandizo chanthawi zonse choletsa dzimbiri kapena mafuta, ndipo ndalama zosamalira ndizochepa kwambiri.
5.Kulimba kwambiri komanso kutha pamwamba
Kupyolera mu kupukuta ndi kupukuta molondola, kusalala kwa maziko a granite kumatha kufika 0.005mm/m², ndi kukhwima kwa pamwamba pa Ra≤0.2μm, kuonetsetsa kuti zikugwirizana bwino ndi zida zolondola (monga nsanja yowunikira, laser interferometer) ndikuchepetsa zolakwika zosonkhanitsira.
Chachiwiri, zolakwa za maziko a granite
1. Kulemera kwakukulu, kovuta kunyamula ndikuyika
Granite imakhala ndi mphamvu zambiri ndipo ndi yolemera kuposa aluminiyamu kapena chitsulo pamlingo womwewo, zomwe zimapangitsa kuti kugwiritsa ntchito ndi kukhazikitsa nsanja zazikulu kumafunika zida zapadera (monga ma forklift kapena zida zonyamulira), zomwe zimawonjezera ndalama zotumizira.
2. Kufooka kwakukulu, kukana kofooka kwa zotsatira
Ngakhale granite ili ndi kulimba kwambiri, ndi chinthu chophwanyika ndipo imatha kusweka kapena kugwa ikagundidwa mwamphamvu (monga kugwa kapena kugundana). Chifukwa chake, muyenera kusamala kwambiri poyendetsa ndi kuyiyika kuti mupewe kugwedezeka kwambiri kapena kugwedezeka.
3. Kukonza n'kovuta ndipo mtengo wosinthira ndi wokwera
Kukonza granite kumafuna zida zapadera zamakina (monga makina ojambulira miyala a CNC) ndi zida za diamondi, ndipo liwiro lokonza limachepa, zomwe zimapangitsa kuti pakhale mtengo wokwera wokonza nyumba zovuta (monga mabowo opangidwa ndi ulusi, mipata yooneka ngati yapadera) komanso nthawi yayitali yotumizira.
4. Kusintha kwadzidzidzi kwa kutentha kungayambitse ming'alu yaying'ono
Ngakhale granite ili ndi kutentha kwabwino, ngati ikukumana ndi kusintha kwakukulu kwa kutentha (monga kusuntha mofulumira kuchokera kumalo otentha pang'ono kupita kumalo otentha kwambiri), ming'alu yaying'ono ya kupsinjika ingachitike mkati, ndipo kusonkhanitsa kwa nthawi yayitali kungakhudze mphamvu ya kapangidwe kake. Chifukwa chake, iyenera kugwiritsidwa ntchito mosamala m'malo omwe kutentha kwake kuli kosiyana kwambiri.
5. Palibe kuwotcherera kapena kukonza kwachiwiri
Maziko achitsulo amatha kusinthidwa pogwiritsa ntchito kuwotcherera kapena kupangira makina, koma granite ikapangidwa, zimakhala zosatheka kusintha kapangidwe kake (monga kuboola, kudula), kotero gawo lokonzekera liyenera kukonzedwa bwino kuti lipewe kusintha mtsogolo.
Nthawi yotumizira: Epulo-11-2025