ʻO nā kuʻekuʻe lima kila he mau mea hoʻopili paipu metala e hoʻololi i ke ala o nā paipu ma nā paipu kila kalapona. ʻO nā mea o nā kuʻekuʻe he hao, ke kila kila, ke kila kila, ka hao malleable, ke kila kalapona, nā metala non-ferrous a me nā plastic, etc.; 45° kuʻekuʻe lima, 90° kuʻekuʻe lima a me 180° kuʻekuʻe lima ʻEkolu mau ʻano kuʻekuʻe lima ʻoi aku ka maʻamau, a ʻo nā kuʻekuʻe kihi ʻē aʻe e like me 60 ° ua hoʻokomo pū ʻia e like me nā pono o ka papahana. Wahi a ke kaʻina hana, hiki ke hoʻokaʻawale ʻia i: kuʻekuʻe kuʻekuʻe, kuʻekuʻe kuʻekuʻe, kuʻekuʻe lima, hoʻolei kuʻekuʻe, etc. Ua ʻike mākou a pau i ka hoʻolālā ʻana a me ka hana ʻana i nā kuʻe lima kalapona, pono e noʻonoʻo ʻia nā ʻano mechanical o carbon steel elbows. No laila, pehea e hoʻomaikaʻi ai i ka paʻakikī o nā kuʻe lima kila? Ma hope o ka ʻōlelo ʻana, pono mākou e kamaʻilio e pili ana i ke kaʻina hana wela. E aʻo kākou e pili ana i ka mālama wela o nā kuʻe lima kila carbon.
ʻO ka mea mua, no ke aha e pono ai nā kuʻe lima kalapona i ka wela? I ka hoʻomaikaʻi ʻana i nā waiwai mechanical, ʻike mākou a pau: ma ke ʻano he ʻāpana o ka ʻōnaehana paipu, ʻaʻole kiʻekiʻe ka paʻakikī o ke kuʻekuʻe, ʻaʻole kūpono ka paʻakikī kiʻekiʻe i ka mālama ʻana i ka ikehu deformation, a ʻoi aku ka maʻalahi o ka haki; ʻAʻole maikaʻi loa ka plasticity, me ka hoʻohana ʻana i ka manawa. Me ka hoʻonui ʻana o ka , e hoʻoikaika mālie ka deformation o ka kuʻekuʻe, e hōʻemi ana i ka paʻa o ka ʻōnaehana paipu. ʻO ka hoʻomaʻamaʻa wela kahi hana e loaʻa ai ka ikaika kūpono, ka paʻakikī a me ka paʻakikī palaki.
ʻO ka mea mua, no ke aha e pono ai nā kuʻe lima kalapona i ka wela? I ka hoʻomaikaʻi ʻana i nā waiwai mechanical, ʻike mākou a pau: ma ke ʻano he ʻāpana o ka ʻōnaehana paipu, ʻaʻole kiʻekiʻe ka paʻakikī o ke kuʻekuʻe, ʻaʻole kūpono ka paʻakikī kiʻekiʻe i ka mālama ʻana i ka ikehu deformation, a ʻoi aku ka maʻalahi o ka haki; ʻAʻole maikaʻi loa ka plasticity, me ka hoʻohana ʻana i ka manawa. Me ka hoʻonui ʻana o ka , e hoʻoikaika mālie ka deformation o ka kuʻekuʻe, e hōʻemi ana i ka paʻa o ka ʻōnaehana paipu. ʻO ka hoʻomaʻamaʻa wela kahi hana e loaʻa ai ka ikaika kūpono, ka paʻakikī a me ka paʻakikī palaki.
A hiki i ka normalizing ke hoʻopau maikaʻi i kēia pilikia. ʻO ka Normalizing kahi ʻano hoʻomaʻamaʻa wela kahi e hoʻomehana ʻia ai ka kuʻekuʻe wela ma luna o ka wela koʻikoʻi a laila hoʻomaha ʻia i ka lewa. I loko o kēia kaʻina hana, e hoʻololi mālie ke ʻano martensite i kaulike ʻole i kahi ʻano austenite like ʻole. Ma kēia kaʻina hana, ʻO ka mea hewa o ka brittleness a me ka paʻakikī - reticulated cementite e nalowale i nā mea nui, hoʻomaʻemaʻe ʻia ka ʻōpala, ua kaulike maikaʻi ka paʻakikī a me ka plasticity, a ua hoʻomaikaʻi ʻia nā waiwai mechanical piha. No laila, ʻoi aku ka maikaʻi o ka hoʻohana ʻana i ka normalizing ma mua o ka quenching no nā kuʻekuʻe me nā koi haʻahaʻa.
ʻAe, ʻo ka mea i luna nei he hoʻolauna pōkole i ka ʻike pili o ke kalapona kila kuʻekuʻe wela, mahalo no ka heluhelu ʻana.
Ka manawa hoʻouna: Iune-24-2022
