Pehea ka Hygroscopic o ka Granite Precision Platform? E Deform anei ia ma kahi Kaiapuni Humid?

Hoʻohana nui ʻia nā papa hana Granite i nā ʻoihana e koi ana i ka pololei kiʻekiʻe a me ke kūpaʻa, e like me ka metrology a me ka hana ʻana. Hāʻawi ʻia i kā lākou kuleana koʻikoʻi i ka mālama ʻana i ka pololei o ka dimensional, hoʻokahi nīnau koʻikoʻi: pehea ka hygroscopic o ka granite, a hiki iā ia ke hoʻololi i loko o kahi kaiapuni? He mea koʻikoʻi ka hoʻomaopopo ʻana i nā waiwai hygroscopic o ka granite no ka hōʻoia ʻana e mālama kēia mau paepae i ko lākou kūpaʻa a me ka hana i nā kūlana hana like ʻole.

ʻO Granite, ma ke ʻano he pōhaku maoli, ua haku ʻia me nā minerala like ʻole, me ka quartz, feldspar, a me ka mica. ʻAʻole like me nā mea e like me ka lāʻau a i ʻole kekahi mau metala, he haʻahaʻa loa ka hygroscopicity o ka granite. ʻO ia ke ʻano, ʻaʻole ia e komo i ka nui o ka wai mai ke kaiapuni a puni, ʻoiai ma nā kūlana haʻahaʻa. ʻO ke ʻano molekala o ka granite, i haku mua ʻia me nā ʻanoʻano mineral paʻa loa, e kūpaʻa ia i ka pehu ʻana a i ʻole ke kaua ʻana i hoʻokumu ʻia e ka hoʻoheheʻe ʻana o ka wai i nā mea ʻē aʻe.

ʻO ka loaʻa ʻole o ka hoʻoheheʻe nui ʻana i ka wai kekahi o nā kumu i makemake ʻia ai ka granite no nā kahua kikoʻī. ʻOkoʻa me nā mea ʻē aʻe i hoʻonui a ʻaelike paha ma muli o nā loli haʻahaʻa, ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa o ka granite e hōʻoiaʻiʻo i ka paʻa mau ʻana i loko o nā kaiapuni me ka nui o ka wai. He mea koʻikoʻi kēia ʻano no nā noi e koi ana i ka pololei kiʻekiʻe, kahi e hiki ai i nā loli liʻiliʻi ke alakaʻi i nā hewa i nā ana.

ʻOiai ʻaʻole hoʻopaʻa ka granite i ka makū a hiki ke ʻike ʻia, hiki i ka haʻahaʻa loa ke hoʻopilikia i kona ʻili. Inā ʻike ʻia i nā pae wai kiʻekiʻe no nā manawa lōʻihi, hiki i ka ʻili o ka granite ke hōʻiliʻili i ka makū o ka ʻili, akā ʻaʻole lawa kēia i mea e hoʻololi ai a nalowale paha ka pololei. ʻO ka ʻoiaʻiʻo, ke mālama pono ʻia a hoʻopaʻa ʻia, kūpaʻa loa nā paepae granite i nā mea kaiapuni e like me ka makū, nā ʻano like ʻole o ka mahana, a me ka ʻike kemika.

He mea nui e hoʻomaopopo, akā naʻe, pono ka mālama pono e mālama i nā paepae granite i ke kūlana maikaʻi loa. ʻOiai ʻo ke kūʻē kūʻokoʻa o ka granite i ka hoʻoheheʻe ʻana i ka wai he mea maikaʻi loa ia, ʻoi aku ka maikaʻi o ka mālama ʻana i kēia mau kahua i nā wahi e hoʻomalu ʻia ai ka haʻahaʻa. Ma nā wahi haʻahaʻa kiʻekiʻe loa, ʻo ka hōʻoia ʻana i ka mālama ʻia ʻana o ka paepae i loko o kahi lumi i mālama ʻia i ke aniau me nā pae wela a me nā pae haʻahaʻa e pale aku i nā mea o waho mai ka hoʻololi ʻana i kāna hana.

I ka hopena, ʻaʻole hygroscopic nā paepae precision granite ma ke ʻano kuʻuna, a ʻo ko lākou hiki ke kū i ka haʻahaʻa kiʻekiʻe me ka ʻole o ka deforming e kūpono ia no nā noi pololei. ʻO kā lākou haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa e hōʻoiaʻiʻo e mālama lākou i ka pololei a me ke kūpaʻa, ʻoiai ma nā wahi haʻahaʻa. Eia nō naʻe, no ka hōʻoia ʻana i ka hana lōʻihi, ʻoi aku ka maikaʻi o ka mālama ʻana a me ka hoʻohana ʻana i kēia mau kahua i nā wahi e mālama ʻia ai ka mahana a me ka haʻahaʻa. Ma ka hoʻomaopopo ʻana i nā waiwai o ka granite a me ka mālama pono ʻana, hiki i nā ʻoihana ke hoʻohana piha i ka ikaika a me ka paʻa o ka mea no nā hana kiʻekiʻe.