Alloy 625 / UNS N06625 / W.NR. 2.4856

Alloy 625 / UNS N06625 / W.NR. 2.4856

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ʻO Alloy 625 kahi mea hao nickel-chromium-molybdenum i hoʻohana ʻia no kona ikaika kiʻekiʻe, paʻakikī kiʻekiʻe a me ke kūpaʻa corrosion maikaʻi loa. Loaʻa ka ikaika o ka alloy 625 mai ka hopena paʻakikī o ka molybdenum a me ka niobium ma kāna matrix nickel-chromium. ʻOiai ua hoʻomohala ʻia ka huila no ka ikaika wela kiʻekiʻe, ua hāʻawi ʻia kona ʻano hoʻohui i kahi pae koʻikoʻi o ka pale ʻana i ka corrosion maʻamau.

ʻOihana a me nā noi

Hoʻohana ʻia ʻo Alloy 625 i nā ʻoihana like ʻole, me ka automotive, moana, aerospace, aila a me ke kinoea, ka hana kemika a me ka nuklea. ʻO nā palapala hoʻohana hope maʻamau e pili ana i nā mea hoʻololi wela, nā bellows, nā hui hoʻonui, nā ʻōnaehana exhaust, nā mea hoʻopaʻa, nā mea hoʻopili wikiwiki a me nā noi ʻē aʻe he nui e koi ana i ka ikaika a me ke kū'ē ʻana i nā kaiapuni corrosive aggressive.

Kū'ē i ka Corrosion

ʻO ka Alloy 625 ke kū'ē maikaʻi i ka oxidation a me ka scaling i nā wela kiʻekiʻe. Ma 1800 ° F, lilo ke kū'ē scaling i mea nui i ka lawelawe. ʻOi aku ka maikaʻi ma mua o nā ʻāpana wela kiʻekiʻe ʻē aʻe ma lalo o ka hoʻomehana cyclic a me nā kūlana hoʻomaha. ʻO ka hui pū ʻana o nā mea i hoʻohui ʻia i loko o ka alloy 625 e hiki ai iā ia ke kū i nā ʻano like ʻole o nā kaiapuni corrosive koʻikoʻi. Aneane ʻaʻohe hoʻouka ʻia ma nā wahi haʻahaʻa, e like me ka wai hou a me ke kai, ka pH kūlohelohe, a me ka media alkaline. ʻO ka maʻiʻo chromium o kēia alloy ka hopena i ke kū'ē maikaʻi i nā kaiapuni oxidizing. ʻO ka molybdenum kiʻekiʻe e hana i ka alloy 625 i kūpaʻa loa i ka lua a me ka crevice corrosion.

Hana a me ka wela

Hiki ke hana ʻia ka Alloy 625 me ka hoʻohana ʻana i nā kaʻina hana anu a wela. Kūʻē ʻo Alloy 625 i ka deformation i nā mahana hana wela, no laila pono nā ukana kiʻekiʻe e hana i ka mea. Pono e hana ʻia ka hana wela i loko o ka pae wela o 1700° a 2150°F. I ka wā o ka hana anu, ʻoi aku ka wikiwiki o ka hana ʻana o nā mea waiwai ma mua o nā kila stainless austenitic kuʻuna. ʻEkolu hoʻomaʻamaʻa wela ʻo Alloy 625: 1) ka hoʻoheheʻe ʻana i ka hopena ma 2000/2200 ° F a me ka hoʻopau ʻana i ka ea a ʻoi aku paha ka wikiwiki, 2) ka hoʻopili ʻana i ka 1600/1900 ° F a me ka hoʻopau ʻana i ka ea a ʻoi aku ka wikiwiki a me 3) hoʻomaha i ke kaumaha ma 1100/1500 ° F a me ka hoʻopau ʻana i ka ea. . Hoʻohana mau ʻia nā mea i hoʻopili ʻia (papa 2) no nā noi ma luna o 1500°F kahi mea nui ke kū'ē i ka kolo. Hoʻohana maʻamau ʻia nā mea i hoʻopili ʻia i ka palupalu (papa 1) no nā haʻahaʻa haʻahaʻa a loaʻa iā ia ka hui maikaʻi loa o nā waiwai tensile a me ka haki.