Nā Pāpaʻi Paʻi Paʻi 321/321H

ʻO ka Alloy 321 (UNS S32100) ka mea hoʻopaʻa paʻa ʻia i ka pā kila stainless i hāʻawi ʻia ma ke ʻano nui o ke kūʻē maikaʻi ʻana i ka corrosion intergranular ma hope o ka ʻike ʻana i nā mahana o ka chromium carbide precipitation range mai 800 a 1500 ° F (427 a 816 ° C). Hoʻopaʻa ʻia ka pā kila stainless Alloy 321 e kūʻē i ka hoʻokumu ʻana o ka chromium carbide e ka hoʻohui ʻana o ka titanium.

ʻOi aku ka maikaʻi o ka Alloy 321 stainless steel plate no ka lawelawe wela kiʻekiʻe ma muli o kāna mau waiwai mechanical. Hāʻawi ka Alloy 321 stainless steel plate i nā waiwai ʻoi aʻe ke kolo a me ke koʻikoʻi ma mua o Alloy 304 a, ʻoi aku hoʻi, ʻo Alloy 304L, kahi e noʻonoʻo ʻia ai no ka hoʻolaha ʻana kahi e hopohopo ai ka sensitization a me intergranular corrosion.

Laulā o ka Pepa Kuhili ʻole

Ua uhi ʻia ka Type 321 Stainless Steel e nā kikoʻī aʻe: AMS 5510, ASTM A240.

Hoʻohui Kimia

Nā Pono Mechanical:

ʻAno hiki
Hiki ke hana maʻalahi a huki ʻia ka ʻano 321, akā naʻe, koi ʻia nā kaomi kiʻekiʻe a ʻoi aku ka nui o ka springback ma mua o ke kila kalapona a me nā kila kulika ferritic. E like me nā kila kuhiliʻole austenitic ʻē aʻe, paʻakikī wikiwiki ka hana ʻana o Type 321 a pono paha e hoʻopili ʻia ma hope o ka hana ʻana.

Hoʻomaʻamaʻa Wela
ʻAʻole hiki ke paʻakikī ke ʻano 321 e ka mālama ʻana i ka wela. Annealing: E ​​wela i 1750 – 2050 °F (954 – 1121°C), a laila kinai i ka wai a i ʻole ea anuanu.

Weldability
ʻO ka papa austenitic o nā kila kila e manaʻo pinepine ʻia e hiki ke weldable e nā ʻenehana hoʻohui maʻamau a me nā ʻenehana kūʻē. Pono ka noʻonoʻo kūikawā e pale i ka weld "weld cracking" ma ka hōʻoia ʻana i ke kūkulu ʻia ʻana o ka ferrite i loko o ka waihona weld. Manaʻo pinepine ʻia kēia huila e like me nā ʻano 304 a me 304L. ʻO kahi ʻokoʻa nui ka hoʻohui titanium e hōʻemi a pale i ka ua carbide i ka wā welding. Ke makemake ʻia kahi hoʻopiha weld, ʻo AWS E/ER 347 a i ʻole E/ER 321 ka mea i ʻōlelo pinepine ʻia. Ua ʻike nui ʻia ke ʻano 321 ma nā palapala kuhikuhi a hiki ke loaʻa nā ʻike hou aʻe ma kēia ala.