Ke hoʻomaopopo nei i ka Pōmaikaʻi o ka Microstructure o ke kaula uea kila kila Duplex 2205

I ke ao ʻoihana hou, he kuleana koʻikoʻi nā kaula uea kila kila i ka hōʻoia ʻana i ka ikaika, ka palekana, a me ke kūpaʻa ma nā ʻāpana like ʻole - mai ka ʻenekinia moana a hiki i ka hana kemika a me ka ʻimi ʻana i ka ʻaila ma waho. Ma waena o nā koho kila kila he nui i loaʻa,Kaula Uea Kila Kila Duplex 2205ua loaʻa ka nānā nui ʻia ma muli o kona ʻano kū hoʻokahiʻano hana liʻiliʻi pālua.

Hāʻawi kēia hoʻolālā metallurgical kūikawā i ke kaula uea Duplex 2205 i kahi kaulike kūikawā o ka ikaika a me ke kūpaʻa i ka pala, e ʻoi aku ka maikaʻi ma mua o nā papa austenitic maʻamau e like me 304 a me 316. MaSakySteel, loea mākou i ka hana ʻana i nā kaula uea kila kila duplex hana kiʻekiʻe e hoʻokō ai i nā koi koʻikoʻi o nā ʻoihana honua.

He aha ke kila kila Duplex 2205?

2205 Duplex Stainless Steel, i koho ʻia ʻo iaUNS S32205 / EN 1.4462, he metala ʻelua-pae i haku ʻia me nā ʻāpana like oʻaustenitea meferriteʻO kēia ʻano kaulike ke kī i kona inoa - "duplex."

• Pae Austenitic:hāʻawi i ka paʻakikī, ka ductility, a me ke kūpaʻa i ka corrosion.

• Pae Ferritic:hāʻawi i ka ikaika, ka paʻakikī, a me ke kū'ē'ē'ana i ka nahā'ana o ka corrosion stress.

Hōʻike ka hopena i nā waiwai mechanical a me ke kūpaʻa i ka corrosion e ʻoi aku ana ma mua o nā kila kila maʻamau me ka mālama ʻana i ka pono kumukūʻai maikaʻi loa.

Ua wehewehe ʻia ka pōmaikaʻi o ka Microstructure

ʻO ka ikaika maoli oKaula Uea Kila Kila Duplex 2205aia i loko o kona microstructure. E ʻimi kākou pehea e hoʻonui ai kēia ʻōnaehana pālua-phase i ka hana:

1. ʻOi aku ka maikaʻi o ka ratio ikaika-a-kaumaha

Hāʻawi ka pae ferritic i ka hua kiʻekiʻe a me ka ikaika tensile, ʻoiai ʻo ka pae austenitic e hōʻoiaʻiʻo i ka ductility a me ka toughness. Hāʻawi kēia hui pū ʻana iā 2205 Duplex kokokepālua ka ikaika huao ke kila kila 304 a i ʻole 316, e ʻae ana i nā mea hoʻolālā e hoʻohana i nā kaula liʻiliʻi me ka ʻole o ka hoʻohaʻahaʻa ʻana i ka hiki ke lawe i nā ukana.

2. Hoʻonui ʻia ke kūpaʻa ʻana i ka palaho

Pale ka microstructure i ka pala kūloko, ʻoi aku hoʻiluaa meka pala o ka lua, kahi e loaʻa pinepine ai i nā wahi waiwai chloride e like me ka wai kai a i ʻole nā ​​​​mea kanu kemika. ʻO ke kaulike o ka chromium (22%) a me ka molybdenum (3%) e kōkua i ka mālama ʻana i kahi kiʻiʻoniʻoni pale passive ma luna o ka ʻili, ʻoiai i nā kūlana acidic a saline paha.

3. Ke kū'ē ʻana i ka haki ʻana o ka palaho kaumaha (SCC)

ʻO kekahi o nā pilikia nui loa no ke kila kila ma nā wahi kai a me ke kahua ʻaila, ʻo ia ka SCC i hoʻokomo ʻia e ka chloride. Mahalo i kona pae ferrite, hōʻike ʻia e 2205 Duplexke kū'ē koʻikoʻii kēia ʻano hāʻule ʻole, e hōʻoiaʻiʻo ana i ke kūpaʻa lōʻihi i nā noi tension a me torsion.

4. Ke kū'ē ʻana i ka luhi

I nā wahi hoʻololi, e like me nā elevators, nā cranes, a i ʻole nā ​​​​ʻōnaehana hāpai kai, ua hōʻike ʻia nā kaula uea i ke kūlou pinepine ʻana a me ka hoʻouka ʻana. Hāʻawi ka microstructure duplex i ke kūpaʻa luhi maikaʻi loa, e ʻoi aku ka paʻa ma lalo o nā pilikia cyclic ma mua o nā kila kila hoʻokahi-phase.

5. Hoʻomaikaʻi ʻia ka Weldability a me ke kūpaʻa o ke kūkulu ʻana

ʻOiai hiki i ka hoʻoheheʻe ʻana ke hoʻololi i ke kaulike pae o nā mea hao he nui, mālama ʻo 2205 Duplex i kahi microstructure paʻa ke hana pololei ʻia. ʻO kona hiki ke kūʻē i ka hoʻokaʻawale pae i ka wā o ka hoʻoheheʻe ʻana e hōʻoiaʻiʻo i ka hana mau a me ka ikaika ma ke ʻano kaula holoʻokoʻa.

Pehea ka hopena o ka Microstructure i ka hana o ke kaula uea

ʻO ka hui pū ʻana o nā pae ferrite a me austenite e hāʻawi i kaKaula Uea Kila Kila Duplex 2205he synergy kū hoʻokahi e unuhi ʻia i nā pono hiki ke ana ʻia i ka hana maoli.