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monel alloy 400 hapa

Hāʻawi nā ʻāpana ʻo Monel Alloy 400 i ke kūpaʻa like ʻole i ka wai kai, nā waikawa, a me nā alkalis - e lilo lākou i mea nui inā ʻaʻole he koho. Akā ke koho pono monel alloy 400 hapa ʻoi aku ma mua o nā ʻikepili waiwai. Ua hana mākou ma luna o 12,000 Monel 400 mau ʻāpana no nā pamu hydraulic, nā kino valve o waho, a me nā kumu winch subsea - a ʻo kēlā me kēia hōʻole ʻana a mākou i ʻike ai ua kumu ia mai ka misalignment ma waena o ke koʻikoʻi o ka noi, geometry, a me ka hoʻokō metallurgical - ʻaʻole mai ka alloy ponoʻī.

No ke aha e hana ai ʻo Monel 400 (a ma hea ʻaʻole ia)

ʻO Monel 400 ka 67% nickel, 30% keleawe, me ka hao a me ka manganese. Hāʻawi kēlā haku mele i ʻelua mau hiʻohiʻona hiki ʻole ke kūʻai aku: palekana i ka chloride-induced pitting a me ke kūpaʻa ma waena o ka pH 2-12. I ka hoʻomaʻamaʻa ʻana, ʻo ia ke ʻano o ka hale paʻa piston i loko o kahi mea kanu desalination he 3.2x ka lōʻihi ma mua o 316 stainless steel-i hōʻoia ʻia e kā mākou ʻikepili kahua 18 mahina mai ʻekolu mau mea hoʻonohonoho o ke Kai Akau. Akā, ʻaʻole wikiwiki ʻo Monel 400 ma lalo o ke koʻikoʻi hoʻomau mau ma luna o 450 MPa a i ʻole ke ʻike ʻia i ka waika sulfuric wela. Hoʻokahi manawa mākou i ʻoki ai i 47 mau ʻōpala valve ma hope o ka haki ʻana i ka wā hydrotesting—no ka mea, ua kuhikuhi ka mea kūʻai aku iā Monel 400 no kahi laina lawelawe 500°C H₂SO₄. ʻAʻole i hewa ka huila; ʻo ka noi.

ʻEhā Koho Koho E Hoʻoholo i ka holomua

E poina i nā lepili maʻamau "ʻoi aku ka corrosion". ʻO ka hilinaʻi o ka honua maoli e pili ana i nā kumu pili ʻehā:

  • Hoʻouka i ke ʻano geometry: Holoi nā hale ʻo Monel 400 me ka pā lahilahi ma lalo o ka haʻalulu hydraulic. Manaʻo mākou i ka mānoanoa pā liʻiliʻi o 4.5 mm no nā kaomi> 250 bar—a e hōʻoia mau i ka hāʻawi ʻana i ka manawa piʻo ma o FEA ma mua o ka ʻoki ʻana i ka metala.
  • Ke koi hoʻopau ʻili: ʻO Ra ≤ 0.8 µm kaohi i ka hoʻomaka ʻana o ka ʻāʻī i ka wai kai kū. Maʻamau CNC huli lau Ra 3.2–6.3 µm. ʻAʻole koho ʻia ka electropolishing a i ʻole ka hoʻopau maikaʻi ʻana - pono ia no nā kumu pahū i lalo.
  • Hoʻopili ʻia ke ʻano hui: Ke koi nei ʻo Welding Monel 400 i ka mana hoʻokomo wela. Hoʻohana mākou i ka GTAW me ERNiCu-7 hoʻopiha a preheat i ka 150 ° C-akā no nā ami wale nō ʻaʻole i hiki i ka luhi cyclic. No nā noi haʻalulu kiʻekiʻe e like me nā huila winch center shaft, pale mākou i nā wiliwili a hoʻohana i ka hoʻopili ʻana me nā lima lima cryo-shrunk Monel 400.
  • Microstructure pono: Loaʻa iā Monel 400 ka hoʻokaʻawale dendritic e kono ana i ka corrosion makemake. ʻO kēlā me kēia ʻāpana hoʻolei a mākou e hāʻawi ai e hoʻopili ʻia i ka hopena annealing ma 1177°C ± 10°C no 15 mau minuke no kēlā me kēia ʻīniha o ka mānoanoa o ka ʻāpana—hōʻoia ʻia e ka palapala ʻāina microhardness ma nā ʻaoʻao.

ʻO ke kumukūʻai huna o "Off-the-Shelf" Monel 400 ʻāpana

Hoʻokumu kekahi poʻe kūʻai i nā lāʻau Monel 400 maʻamau, a laila e mīkini iā lākou ma ka ʻāina. Mālama kēlā ala i ka 18-22% i mua - akā hoʻohui i ka pilikia. He mea nui ka palapala hōʻoia mea maka. Ua hoʻāʻo mākou i nā pūʻulu mea kūʻai aku he 11 i kapa ʻia ʻo "ASTM B127 Monel 400": ʻekolu i hāʻule i ka hoʻāʻo intergranular corrosion ma kēlā me kēia ASTM G28A, a ʻelua i hōʻike i ka 12-17% haʻahaʻa haʻahaʻa haʻahaʻa ma muli o ka hana anu ʻole. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ʻo kēlā me kēia Monel 400 ingot e lawe ana i nā hōʻike hoʻāʻo wili piha-me ka nui o ka palaoa (ASTM E112), ka mea sulfur (<0.002%), a me ka nānā 'ana ultrasonic no ka ASTM A388. ʻAʻohe ʻokoʻa. ʻAʻohe pōkole.

Pehea e wehewehe ai i kāu ʻāpana Monel Alloy 400 ʻĀkau

E hoʻomaka me ka hana-ʻaʻole mea. E nīnau i kēia mau nīnau ʻelima ma mua o ka hoʻopuka ʻana i kahi kiʻi:

  1. He aha ke kiʻekiʻe o ka wela lawelawe *a me ka piʻikiʻi wela? (Hoʻoluʻu ʻo Monel 400 ma luna o 500°C—akā, paʻa ka ikaika ma -200°C.)
  2. He 3 m/s ka wikiwiki o ka wai? Hoʻopau ke kahe kiʻekiʻe i nā ʻāpana ʻokikene o ka ʻili, e koi ana i ka mana Ra.
  3. E hoʻopili paha ka ʻāpana i nā metala like ʻole? Hōʻalo i ka hoʻopili pololei ʻana me ke kila kalapona a i ʻole ka aluminika—ʻo nā au galvanic e hoʻolalelale iā Monel 400.
  4. ʻOi aku ka nui o ke kūpaʻa dimensional ma mua o ka ikaika piha? Loaʻa iā Monel 400 ka CTE o 13.9 µm/m·°C—kokoke i ka hao. E hoʻohana i kēlā i kāu pono i nā kumu pahū.
  5. Pono anei ka mālama ʻana i ka wela ma hope o ka mīkini? ʻO ka hoʻomaha ʻana i ke koʻikoʻi ma 550 ° C e hoʻomaikaʻi i ke ola luhi e 40% ma nā ʻāpana like ʻole e like me nā hale cylinder.

Hoʻopaʻa mākou i kēlā me kēia kelepona GD&T e kūʻē i ka hiki ke hana machining - ʻaʻole wale i ka hoʻomanawanui ʻana. No ka laʻana: e hōʻike ana i ka ± 0.01 mm ka hoʻomanawanui kūlana ma kahi 300-mm-diameter Monel 400 flange hiki ke loaʻa ma kā mākou 5-axis horizontal mill. E wehewehe ana i ka ʻae like ʻana ma kahi paipu lahilahi 1200-mm-lōʻihi? ʻAʻole me ke kākoʻo mandrel - a e haʻi mākou iā ʻoe i mua.

E nānā i mua: ʻO ka pololei ma mua o ka pale ʻana i ka corrosion

ʻO ka pale ʻana i ka corrosion ka pākaukau. Pono nā ʻāpana ʻo Monel 400 o ka lā ʻapōpō e hoʻokele i ka distortion thermal, hoʻomau i nā ukana cyclic, a hoʻohui pono i nā kahe hana māhoe kikohoʻe. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ke hoʻokomo nei mākou i nā hōʻailona RFID i loko o nā pahu paʻi koʻikoʻi Monel 400-e hiki ai ke ʻike i ka manawa maoli o nā lāʻau lapaʻau wela, nā hōʻike CMM, a me nā moʻolelo hoʻāʻo leak. Hoʻomaʻamaʻa mākou i nā ala hoʻoheheʻe hoʻoheheʻe ʻia no nā pahu pāpaʻi Monel 400 nui - e ʻoki ana i ka manawa alakaʻi e 35% ʻoiai e hoʻomaikaʻi ana i ke kahe ʻana o ka palaoa. ʻAʻole wale ka hoʻolako ʻana a monel alloy 400 hapa. ʻO ia ka hāʻawi ʻana i kahi mea nona ka mōʻaukala hana i hoʻopaʻa paʻa ʻia e like me kāna ʻano kemika.


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