Hoʻohana nui ʻia nā crucibles tungsten ma nā ʻano ʻano like ʻole ma muli o ko lākou kiʻekiʻe heheʻe, kiʻekiʻe kiʻekiʻe, maikaʻi ke kūpaʻa ʻaʻahu, a me ka pale ʻana i ka corrosion. ʻOi loa i ka hoʻoheheʻe ʻia ʻana o ka honua, he mea koʻikoʻi ka hana a me ke ola o nā crucibles tungsten. Loaʻa i nā crucibles welded kuʻuna i nā hemahema e pili ana i ko lākou ola lawelawe. ʻO ka tungsten crucible sintered, ma muli o kona kiʻekiʻe kiʻekiʻe a me ka maʻemaʻe, hoʻoponopono i kēia mau pilikia a ua lilo ia i koho i koho ʻia i ka ʻoihana hoʻoheheʻe honua.
I ka wā o ka ulu ʻana o nā sapphire crystals, ʻo ka maʻemaʻe kiʻekiʻe a me ka ʻole o nā māwae kūloko o nā crucibles tungsten e hoʻomaikaʻi nui i ka holomua o ka crystallization hua. I ka manawa like, hoʻokani koʻikoʻi lākou i ka hoʻomalu ʻana i ka maikaʻi o ka huki ʻana o ka kristal sapphire, de crystallization, pili i ka ipuhao, a me ke ola lawelawe.
Pono pū ka hoʻoheheʻe ʻana o ke aniani Quartz i kahi mea hoʻoheheʻe kiʻekiʻe tungsten crucible e like me ka ipu kumu e hōʻoia ai i ka paʻa a me ka hua i nā wela kiʻekiʻe. ʻAʻole hiki i nā crucibles Tungsten ke kū i nā wela kiʻekiʻe loa i kēia mau noi, akā e hōʻoiaʻiʻo i ka maʻemaʻe o nā mea a me ka maikaʻi o ka huahana.