ʻO ka hana ʻana o ka pā kila kila: pale ʻino

Loaʻa i ke kila kila ke kūpaʻa ʻino like ʻole me ka nickel-chromium alloy 304. ʻO ka hoʻomehana lōʻihi i ka pae wela o nā degere chromium carbide hiki ke hoʻopili i nā alloys 321 a me 347 i loko o ka media corrosive koʻikoʻi. Hoʻohana nui ʻia i nā noi wela kiʻekiʻe, koi ʻia ka mea i ke kūpaʻa ikaika i ka sensitization e pale i ka corrosion intergranular ma nā haʻahaʻa haʻahaʻa.

kiʻekiʻe wela oxidation kū'ē

Kūleʻa nā papa kila kila i ka hoʻonā wela kiʻekiʻe, akā e hoʻopili ʻia ka nui o ka oxidation e nā kumu kūlohelohe e like me ke ʻano o ka ʻike a me ke ʻano o ka huahana.

waiwai kino

ʻO ka heluna hoʻoili wela holoʻokoʻa o kahi metala e pili ana i nā mea ʻē aʻe ma mua o ka hoʻoili wela o ka metala. I ka hapanui o nā hihia, ka helu wela o ka kiʻiʻoniʻoni, ka pālākiō oxide a me ke ʻano o ka ʻili o ka metala. Mālama ke kila kila i ka maʻemaʻe o ka ʻili, no laila ʻoi aku ka maikaʻi o ka wela ma mua o nā metala ʻē aʻe me ka ʻoi aku o ka wela wela. Liaocheng Suntory Kūleʻa Kūleʻa Kūleʻa 8. Nā Kūlana ʻenehana no nā pā kila kila ʻO nā pā kila kila kiʻekiʻe me ka maikaʻi o ka corrosion kūpaʻa, ke kulou ʻana i ka hana, ka paʻakikī o nā ʻāpana welded, a me ka hiki ke hana ʻia o nā ʻāpana welded a me kā lākou hana hana. ʻOiaʻiʻo, loaʻa iā C: 0.02% a i ʻole ka liʻiliʻi, N: 0.02% a i ʻole ka liʻiliʻi, Cr: 11% a i ʻole a ʻoi aʻe ma lalo o 17%, loaʻa iā Si, Mn, P, S, Al, Ni, a me 12≤Cr Mo 1.5Si≤17 kūpono. E wela i ka pā kila kila me 1≤Ni 30(CN) 0.5(Mn Cu)≤4, Cr 0.5(Ni Cu) 3.3Mo≥16.0, 0.006≤CN≤0.030 a i 850～1250℃, a laila wela i ka 1 ℃/s, a laila wela i ka 1 ℃/s. Ma kēia ala, hiki iā ia ke lilo i pā kila kila kila nui, nona ka hale i ʻoi aku ma mua o 12% martensite volume, he ikaika kiʻekiʻe ma mua o 730MPa, ke kūpaʻa ʻana a me ka hoʻokō ʻana, a he paʻakikī maikaʻi loa i ka welding wela. ʻO ka hoʻohana pinepine ʻana o Mo, B, etc. hiki ke hoʻomaikaʻi nui i ka hana stamping o nā ʻāpana welded.

ʻAʻole hiki ke ʻoki ʻia ke kila kuhiliʻole no ka mea ʻaʻole hiki ke ʻoki ʻia ke kila kila.