ʻOi aku ka makemake o nā mea pono Monel ma mua o ka pale ʻana i ka corrosion — koi lākou i ke kūpaʻa dimensional ma lalo o ka paikikala wela, ka microstructural integrity ma hope o ka wili ʻana, a me ke ola luhi hiki ke wānana i nā kaapuni hydraulic kiʻekiʻe. Ke hāʻule ka valve hoʻoheheʻe wai kai ma 3,200 psi, ʻaʻole i loaʻa i ka papa alloy ka hewa. ʻO ia ke kūpono: ka concentricity o ka flange bore, ka hoʻopau ʻana o ka ʻili ma ka poʻohiwi sealing, ka paʻa o ka paʻakikī o ka ʻāina i hoʻopili ʻia i ka wela ma waena o 500 mau ʻāpana hana. Ma laila kahi ʻoiaʻiʻo hale hana pono monel hoʻokaʻawale iā ia iho - ʻaʻole ma ka ʻōlelo ʻana i ka ASTM B164, akā ma ka hoʻomalu ʻana i ka kahe ʻana o ka palaoa i ka wā e hoʻopaʻa ʻia ai ka wela, e hōʻoia ana i ke kūpaʻa ʻana o ka corrosion intergranular me ASTM G28 Method A ma kēlā me kēia hailona, a me ka paʻa ʻana o ± 0.005 mm ka lōʻihi o ka hoʻopili ʻana me ka ʻole o ka kaumaha ʻana i ka ikaika tensile.
Ua ʻike mākou i ka poʻe kūʻai e hoʻololi i nā mea hoʻolako ʻekolu manawa ma mua o ka ʻike ʻana ʻaʻole ʻo Monel 400 vs. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., mīkini mākou i nā pono Monel ʻaʻole ma ke ʻano he "ʻāpana metala exotic," akā ma ke ʻano he mau pilina hana ma waena o ke kaomi ʻana o ka ʻōnaehana a me ka hoʻoulu ʻana i ke kaiapuni. Holo ʻole kā mākou pūnaewele CNC no 72 mau hola ma Monel 400 flanged kuʻekuʻe lima—no ka mea, ʻo kā mākou papa hana ala e helu ai i nā helu hoʻoikaika paʻakikī 2.3 × kiʻekiʻe ma mua o ka stainless 316, a ʻo kā mākou CMM kaʻina hana e nānā i ke kahe wela i ka manawa maoli, ʻaʻole wale ma mua a ma hope.
ʻAʻole ʻo ka hoʻohui pū ʻana i kahi huaʻōlelo ma ʻaneʻi-ʻo ia ka mea e hōʻoiaʻiʻo ai mākou i ka mea e hoʻāʻo ai nā poʻe ʻē aʻe ma ka nānā hope ʻana. Hoʻolei mākou i nā hale pāpaʻi Monel me ka hoʻohana ʻana i nā mole hoʻopukapuka me nā hoʻoheheʻe ʻia ʻana o nā pūpū seramika i hoʻopaʻa ʻia no nā nickel-copper alloys, a laila hana i ka annealing solution ma 1,175°C ±5°C me ka hoʻopaʻa ʻana i ka nitrogen-purged quenching e hoʻopaʻa i ka austenite like ʻole. ʻAʻohe hale hoʻolei ʻaoʻao ʻekolu. ʻAʻohe ʻano like ʻole o ka puʻupuʻu a me ka puʻupuʻu i ke kaawale lima dendrite. Ke kuhikuhi ʻoe iā AMS 4953 Monel K-500 no ka hoʻohui ʻana i ka subsea actuator, loaʻa iā ʻoe nā helu wela hiki ke ʻike ʻia, nā hōʻike hoʻāʻo intergranular corrosion i hōʻoia ʻia ma ka ASTM G28A, a me nā loina mīkini i hōʻoia ʻia me ka optical thread profileometry—ʻaʻole wale nā ana go/no-go. ʻO ia ke kumu e hoʻouna mai ai nā hui ʻenekinia mai nā mea hana rig o waho ma Norewai a me nā OEM hydraulic ma Texas iā mākou i nā kaha kiʻi GD&T-kaumaha me ka ʻae ʻana i ke kūlana paʻa i nā hiʻohiʻona datum he nui-a manaʻo e ʻae ʻia ka ʻatikala mua i loko o 12 mau lā hana.
Ke hoʻopaʻapaʻa nei kekahi ʻo nā hale hana monel pono e hoʻokahua i ke kumu kūʻai kumu ma mua o ka hoʻokele kaʻina hana. Akā, ʻaʻole ka waiwai o Monel i loko o ka nickel content-ʻo ia i ka nele o ka chloride-induced stress corrosion ma ka 85 ° C lawelawe wai kai. Hoʻokumu mākou i nā palapala Monel 400 i hōʻoia ʻia me ka sulfur i hōʻoia ʻia ≤0.001% a me ka oxygen ≤0.002%, no ka mea, hoʻokumu ʻia ka sulfur kiʻekiʻe i nā eutectics hoʻoheheʻe haʻahaʻa e hoʻomaka ai i nā waimaka wela i ka wā hoʻoheheʻe wela; ʻO ka nui o ka oxygen e hoʻoikaika i nā stringers oxide e lilo i wahi hoʻomaka ʻana ma lalo o ka hoʻouka ʻana. Loaʻa i kēlā me kēia coil e komo mai ana i ka spark emission spectroscopy a me ka hoʻāʻo ultrasonic immersion ma mua o ka hoʻokuʻu ʻana i ka hana. ʻAʻole mākou e ʻae i ka "mill certs" - ke hōʻoia nei mākou i ka kemika, ka nui o ka palaoa (ASTM E112), a me nā waiwai mīkini iā mākou iho. Inā koi kāu palapala noi i ka paʻakikī HAZ ma lalo o 35 HRC ma hope o ka hoʻoheheʻe ʻana o ka orbital, ua kūpono mākou i kā mākou kaʻina hana weld me nā hoʻāʻo ʻana i ka tensile transverse a me ke alakaʻi ʻana i ka piko—ʻaʻole wale ka macro-etching.
Hoʻomaka ka hana honua maoli me ka manaʻo hana hana - ʻaʻole ma hope o ka haʻi ʻana, akā i ka wā o ka loiloi kiʻi. I ka wā i hoʻouna mai ai ka mea kūʻai iā mākou i kahi hui swivel Monel K-500 me 0.002 mm ka nui o ka holo ʻana o ke anawaena ma kahi alo he 220 mm, ua hōʻailona mākou i ka pilikia o ka hoʻolālā ʻana i ka wili ʻana a hoʻolālā i kahi kaʻina hana ʻelua: wili ʻōpala + hoʻomaha hoʻomaha + hoʻopau ʻana i ka wili ʻana i nā wili ea. ʻO kēlā hoʻololi e ʻoki i ka helu ʻōpala mai 18% a i 0.7% ma waena o 300 mau ʻāpana. Hoʻokomo mākou i kēia noʻonoʻo i loko o kēlā me kēia papahana: ʻAʻole manaʻo ka wehewehe ʻana o GD&T—e pili ana ia i ka ʻike inā pono ka hoʻomanawanui kūlana i kahi pine maʻamau a i ʻole kahi ana hoʻonohonoho ʻike. No ka hoʻohana ʻana o Monel i nā ʻāpana ʻāpana ʻaila, hoʻohui mau mākou i ka passivation lua i ka waikawa citric ma kēlā me kēia ASTM A967 e wehe i ka hao manuahi mai ka mīkini - a laila e hōʻoia me ka hoʻāʻo copper sulfate no ASTM A380. ʻAʻole ʻoe e ʻike i kēlā ʻanuʻu ma ka hapa nui o nā ʻōlelo. E ʻike ʻoe iā ia ma kā mākou hōʻike nānā ʻatikala mua.
A hale hana pono monel loaʻa ka hilinaʻi ʻaʻole ma ka papa inoa ʻana i nā palapala hōʻoia, akā ma ka hoʻouna ʻana i nā ʻāpana e ola ana i nā pōʻai he 20,000 i ka hoʻāʻo wikiwiki ʻana o ka noe paʻakai me ka ʻole o ka lua-a me ka palapala ʻana i kēlā me kēia microhardness heluhelu ma ka weld interface. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. hāʻawi i kēlā kūlike ma o ka metallurgy i hoʻopaʻa ʻia, ka metrology i hoʻopili ʻia, a me ke kaʻina hana ʻole-compromise. Inā pono kāu ʻāpana Monel aʻe e hana ma kahi o ka hāʻule ʻana, ka pilikia palekana, a i ʻole ka hoʻokuʻu ʻana i ke kaiapuni - hoʻomaka me ka loiloi hana hana, ʻaʻole ka hoʻohālikelike kumukūʻai.
