Ma hope o ka hoʻopau ʻana i ke kaʻina hana weld e hoʻohana ana i ka mīkini welding nut spot, he mea koʻikoʻi ia e hana i ka nānā ʻana ma hope o ka weld e hōʻoia i ka maikaʻi weld a me ka pili ʻana i nā kūlana i kuhikuhi ʻia. Hoʻohana ʻia kekahi mau ʻano nānā e loiloi i ka pono a me ka ikaika o nā hui weld. Hōʻike kēia ʻatikala i kahi hiʻohiʻona o nā ʻano loiloi like ʻole i hoʻohana ʻia no ka hoʻokolokolo hope-weld i nā hana wiliwili nut spot.
- Nānā Kiʻi: ʻO ka nānā ʻike maka ke ʻano maʻamau a mua o ka loiloi ʻana i ka maikaʻi weld. Ke nānā nei kekahi mea nānā akamai i nā hono weld me ka maka ʻōlohelohe e ʻike i nā hemahema ʻike ʻia e like me ka ʻae ʻole o ka ʻili, ka like ʻole o ka weld bead, a me nā hōʻailona o ka hui ʻole ʻana a i ʻole porosity. Hāʻawi kēia ʻano hoʻokele hoʻopau ʻole i nā manaʻo koʻikoʻi e pili ana i ka hiʻohiʻona weld holoʻokoʻa a hiki ke hōʻike i ka hiki ʻana o nā hemahema.
- Nā ʻenehana hoʻāʻo ʻaʻole luku (NDT): a. Ultrasonic Testing (UT): Hoʻohana ʻo UT i nā nalu kani alapine kiʻekiʻe e nānā i nā welds no nā hemahema o loko. Hiki iā ia ke ʻike i nā mea ʻole, e like me nā māwae a i ʻole ka hui ʻole ʻana, i loko o ka hui weld me ka ʻole o ka hōʻino ʻana i ka ʻāpana. He mea pono loa ka UT no ka ʻike ʻana i nā hemahema huna i nā welds koʻikoʻi.
b. Ho'āʻo Radiographic (RT): Hoʻohana ʻo RT i ka hoʻohana ʻana i nā kukui X a i ʻole nā kukui gamma no ka loaʻa ʻana o nā kiʻi o ka hale o loko o ka hui weld. Hāʻawi kēia ʻenehana i nā mea nānā e ʻike i nā hemahema o loko, nā hakahaka, a me nā hoʻokomo ʻana i ʻike ʻole ʻia i ka wā o ka nānā ʻana.
c. ʻO ka hoʻāʻo ʻana o ka mākēneki (MT): Hoʻohana nui ʻia ʻo MT e nānā i nā mea ferromagnetic. Hoʻopili ia i ka hoʻopili ʻana i nā māla magnetic a me nā ʻāpana magnetic i ka ʻili weld. E hōʻiliʻili nā ʻāpana i nā wahi me nā hemahema, e maʻalahi ke ʻike ʻia.
d. Liquid Penetrant Testing (PT): Hoʻohana ʻia ʻo PT no ka ʻike ʻana i nā hemahema o ka haki ʻana i ka ʻili i nā mea porous ʻole. Hoʻopili ʻia kahi wai penetrant i ka ʻili weld, a holoi ʻia ka penetrant keu. Hōʻike ʻia ke koena penetrant ma o ka noi ʻana o kahi mea hoʻomohala, e hōʻike ana i nā hemahema o ka ʻili.
- ʻO ka hoʻāʻo hōʻino (DT): I nā hihia kahi e loiloi ʻia ai ka maikaʻi o ka weld, hoʻohana ʻia nā ʻano hoʻāʻo luku. Hoʻopili kēia mau hoʻāʻo i ka wehe ʻana i kahi ʻāpana o ka hui weld no ka nānā ʻana i kona ʻano mīkini a me kona ikaika. Aia nā ʻano hana DT maʻamau: a. ʻO ka hoʻāʻo ʻana: E ana i ka ikaika tensile a me ka ductility o ka hui weld. b. ʻO ka hoʻāʻo ʻana ʻo Bend: E loiloi i ke kūʻē ʻana o ka weld i ka haki ʻana a i ʻole ka haki ʻana ma lalo o ke koʻikoʻi piʻo. c. Nānā Macroscopic: Hoʻopili i ka ʻāpana a me ka poli ʻana i ka weld e loiloi i kona ʻano a me ke komo ʻana o ka weld.
ʻO ka hana ʻana i ka nānā ʻana ma hope o ka weld me ka hoʻohana ʻana i nā ʻano hana like ʻole he mea nui ia e hōʻoia i ka hilinaʻi a me ka maikaʻi o nā hui weld i hana ʻia e ka mīkini weld spot nut. ʻO ka hui pū ʻana o ka nānā ʻike maka, nā ʻenehana hoʻāʻo ʻole luku, a inā pono, hāʻawi ka hoʻāʻo luku i nā ʻike piha i ka kūpaʻa o ka weld a me ka pili ʻana i nā kūlana ʻoihana. Ma ka hoʻokō ʻana i kēia mau ʻano loiloi, hiki i ka poʻe loea welding ke hōʻoia i ka palekana a me ka hana ʻana o nā mea welded i nā noi like ʻole.
Ka manawa hoʻouna: ʻAukake-03-2023
