Pulatifomu ya granite ndi nsanja yopangidwa ndi granite. Wopangidwa kuchokera ku mwala woyaka moto, granite ndi mwala wolimba, wonyezimira. Poyamba amapangidwa ndi feldspar, quartz, ndi granite, amalowetsedwa ndi mchere umodzi kapena zingapo zakuda, zonse zokonzedwa mofanana.
Granite imapangidwa makamaka ndi quartz, feldspar, ndi mica. Feldspar amawerengera 40% -60%, ndi quartz 20% -40%. Mtundu wake umadalira mtundu ndi kuchuluka kwa zigawozi. Granite ndi mwala wonyezimira kwambiri. Granite yapamwamba imakhala ndi njere zabwino komanso zofananira, mawonekedwe owundana, ma quartz apamwamba, ndi sheen yowala ya feldspar.
Granite imakhala ndi silika wambiri, zomwe zimapangitsa kuti ikhale thanthwe la acidic. Ma granite ena amakhala ndi zinthu zambiri zotulutsa ma radio, kotero mitundu iyi ya granite iyenera kupewedwa kuti igwiritsidwe ntchito m'nyumba. Granite ili ndi mawonekedwe owundana, olimba, ndipo imalimbana ndi ma acid, alkalis, ndi nyengo, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito panja kwa nthawi yayitali. Granite ili ndi izi:
1. Granite ili ndi mawonekedwe owundana, mphamvu yopondereza kwambiri, kuyamwa kwamadzi otsika, kuuma kwapamwamba kwambiri, kukhazikika kwamankhwala abwino, komanso kulimba kwamphamvu, koma kusakanizidwa ndi moto.
2. Granite ili ndi mawonekedwe a granular okhala ndi njere zabwino, zapakatikati, kapena zolimba, kapena mawonekedwe a porphyritic. Mbewu zake ndi zofananira komanso zabwino, zokhala ndi mipata yaying'ono (porosity nthawi zambiri imakhala 0.3% mpaka 0.7%), kuyamwa kwamadzi otsika (nthawi zambiri 0.15% mpaka 0.46%), komanso kukana chisanu.
3. Granite ndi yolimba, ndi kulimba kwa Mohs mozungulira 6 ndi kachulukidwe koyambira 2.63 g/cm³ mpaka 2.75 Gulu la g/(cm³) lili ndi mphamvu yopondereza ya 100-300 MPa, yokhala ndi granite yabwino kwambiri yofikira 300 MPa. Mphamvu yake yosinthika nthawi zambiri imakhala pakati pa 10 ndi 30 MPa.
Chachinayi, granite imakhala ndi zokolola zambiri, ndiyotheka kunjira zosiyanasiyana zogwirira ntchito, ndipo imakhala ndi zida zabwino kwambiri zophatikizira slab. Kuphatikiza apo, granite siwongoleredwa mosavuta, ndikupangitsa kuti ikhale yoyenera kukongoletsa panja.
Kusunga nsanja ya miyala ya marble (marble slab) kumafuna kudziwa zololera ndi zofunikira zosamalira nsanja yaposachedwa ya marble, komanso kudziwa ngati malo ogwirira ntchito ali ndi maenje. Ngati nsanja ya nsangalabwi ili ndi maenje ang'onoang'ono pamwamba pake, iyenera kubwezeredwa kufakitale kuti ikasinthidwe. Ngati kulondola kwasintha kokha, kukonzanso kuyenera kuchitidwa pamalo ogwiritsira ntchito. Pambuyo pa nthawi yayitali, kugwiritsidwa ntchito pafupipafupi, nsanja ya nsangalabwi idzakhala Ngati nsanja ya nsangalabwi ndi yathyathyathya kwambiri, cholakwika cholondola chidzawonjezeka pang'onopang'ono, zomwe zimabweretsa kulondola kolakwika. Pankhaniyi, pamafunika kukonza.
Njira zokonzekera nsanja za marble:
1. Yang'anani kulondola kwa nsanja ya nsangalabwi ndikuzindikira zolakwika zake.
2. Pogaya nsanja ya nsangalabwi pogwiritsa ntchito ma abrasives ndi zida zopera kuti mukwaniritse mulingo wofunikira.
3. Kugaya kwachiwiri kwa semi-fine kwa nsanja ya nsangalabwi pambuyo pa kugaya movutikira ndikuchotsa zokopa zakuya ndikukwaniritsa mulingo wofunikira.
4. Pewani malo ogwirira ntchito a nsanja ya nsangalabwi kuti mukwaniritse kulondola kofunikira.
5. Yesani kulondola kwa nsanja ya nsangalabwi mutatha kupukuta, komanso pakapita nthawi.
Nthawi yotumiza: Sep-01-2025