ʻO ke kaʻina hana nui loa o ka hana ʻana i nā paipu wili ʻole kila kila 304 ʻo ia ka mālama wela ʻana i nā paipu welded.
ʻO ke kaʻina hana mālama wela e pili ana i ka hoʻomehana ʻana, ka mālama ʻana i ka wela, ka hoʻoluʻu ʻana, a me nā mea ʻē aʻe, i mea e hōʻemi ai i ka deformation metala i ka wā o ke kaʻina hana o ka paʻakikī a me nā hemahema ʻē aʻe, i mea e hoʻihoʻi ai i ka deformation o ka paipu ma hope o ka hana ʻana, e hoʻomaikaʻi i kāna hana.
ʻO nā mea hana lapaʻau wela maʻamau i kēia manawa, ʻo ia ka umu uila a me ka umu reverberatory; ke ʻano hoʻokele maʻamau no ka kaohi mahana aunoa. He ʻokoʻa nā koi lapaʻau wela o nā paipu kila kila 304 like ʻole, ʻaʻole like nā deformation o nā mea hana e mālama wela ʻia, ʻo ka maʻamau, ʻaʻole i emi iho ka mahana hope o nā paipu kila kalapona haʻahaʻa ma mua o 723 ℃, a laila ʻaʻole hiki ke mālama wela. Inā ma lalo o kēia mahana a i ʻole ma luna o 1000 degere Celsius, pono e mālama wela ʻia;
Pono e hoʻohana ʻia ka mea metala a me ka paipu humuhumu kila kila 304 ma hope o ka mālama wela.
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Ka manawa hoʻouna: Malaki-12-2018