S31803 Kowiri tira takirua: Ātete pai ki te waikura me te kaha nui mō ngā mahi ahumahi

Ko te S31803, e mōhiotia ana ko te Duplex 2205, ko te F60 rānei, he momo maitai kore waikura duplex e tino manakohia ana i te mākete o te ao. E mōhiotia ana i raro i te Unified Numbering System (UNS), e whakanuia ana tēnei rauemi mō tōna ātete ki te waikura, tōna kaha miihini pai rawa atu, me tōna mahi maha i roto i ngā taiao uaua.

Te Hanganga me te Hanganga Matū Matua

He ranunga taurite o ngā huānga whakarewa te maitai kore waikura takirua S31803 e whakarato ana i ōna āhuatanga tino pai:

• Konukōmiuma (Kr):Tata ki te 22% – Ka whakarei ake i te ātete ki te waikura, inā koa ki te waikura o ngā poka me ngā kapiti.

• Nikara (Ni):Tata ki te 5.0–6.0% – Ka whakapai ake i te pakari me te ngāwari.

• Molibdenuma (Mo):Tata ki te 3.0% – Ka whakanui ake i te ātete ki te waikura ā-rohe, inā koa i roto i ngā taiao he nui te pūhaumāota.

• Hauota (N):Tata ki te 0.18% – Ka whakanui ake i te kaha, ā, ka whai wāhi atu ki te ātete ki te waikura.

Ko te hanganga moroiti takirua-wāhanga ahurei, e whakakotahi ana i ngā wāhanga ferritic me te austenitic, ka hua ake he āhuatanga miihini e tata ana ki te rua ngā āhuatanga o ngā maitai kore waikura austenitic tuku iho, me te pupuri tonu i te ngawari me te pakari.

Ngā Āhuatanga me ngā Painga Tino Pai

Te Ātete Waikura Whakarei Ake

He tino pai te ātete a S31803 ki ngā momo waikura, tae atu ki:

• Te Waikura o te Pōka me te Kapiti:Nā te nui o te chromium me te molybdenum ka taea e ia te mahi tino pai i roto i ngā taiao chloride.

• Te Pakaru o te Waikura i te ahotea:Ka nui ake te ātete o te hanganga takirua ki te pakaru i raro i te ahotea, ahakoa ka pāngia e te pāpāho kaha.

Kaha Mīhini Tino Pai

• Kaha Kukume Teitei:I te nuinga o te wā, ko te kaha kume o te S31803 e neke atu ana i te 500 MPa, he mea tino pai mō ngā tono pēhanga teitei.

• Te Whakapai Ake i te Pakari:Ehara i te mea ka whakapakari noa te hanganga moroiti taurite i te kaha engari ka whakarite hoki i te pakari me te ngāwari pono, he mea nui ēnei i roto i ngā taiao ahumahi hihiri.

He Āheitanga Whakarewa Pai rawa atu

Ahakoa me aro nui ki te wā whakarewa hei karo i te pirau i te rohe e pāngia ana e te wera, mā ngā tikanga whakarewa tika me ngā maimoatanga i muri i te whakarewa ka taea te whakarite kia kaha, kia kore he hononga. Nā tēnei ka waiho a S31803 hei whiringa whai hua mō ngā mahi hanga me ngā mahi whakatika.

Ngā Taupānga Ahumahi

He whānuitia te whakamahinga o te maitai kore waikura takirua S31803 i roto i ngā momo ahumahi nā te mea he pai te whakakotahitanga o te kaha me te ātete ki te waikura. Ko ngā wāhi tono matua ko:

• Ngā Taputapu Tukatuka Matū:He mea tino pai mō ngā tauhohenga, ngā tāke rokiroki, me ngā pūnaha paipa e hiahiatia ana te ātete ki ngā matū kaha.

• Te Ahumahi Hinu me te Hau:E whakamahia whānuitia ana i roto i ngā paipa, ngā takirere, me ngā hononga, inā koa i raro i ngā āhuatanga pēhanga teitei me te hauhāora nui.

• Te Hangarau Moana me te Hanga kaipuke:Nā te ātete ki te waikura o te wai tote, he pai mō ngā hanganga tai moana, ngā taputapu moana, me ētahi atu whakamahinga kaipuke.

• Ngā Whare Whakaputa Pūngao:E mahi ana i roto i ngā tipu hiko me ngā whakaurunga karihi ina he mea nui te pumau o te hanganga me te mahi mō te wā roa.

• Ngā Wāhanga Hanga me ngā Wāhanga Hoahoa:Nā tōna āhua ataahua me tōna pakari i whakamahia ai i roto i ngā hanganga whare hou me ngā mahi whakapaipai.

   

Te Whakatutuki i ngā Paerewa o te Ao

E tutuki ana te maitai kore waikura takirua S31803 i ētahi paerewa nui o te ao me te motu, kia tika ai tōna pono me tōna kounga. Hei tauira:

• ASME B16.11:E whakaatu ana i tōna whakamahinga i roto i te hanga i ngā hononga paipa whakarewa me ngā hononga paipa miro.

• ASTM A240/A240M:Ka whakarato aratohu mō ngā pereti maitai kore waikura e whakamahia ana i roto i ngā momo tono.

• EN 10088-2:E whakamārama ana i ngā whakaritenga mō ngā hua kowiri tira i Ūropi.

Mā te piripono ki ngā paerewa pakari ka tutuki i a S31803 ngā hiahia o ngā tono nui o te ao katoa.

Whakamutunga

He rauemi pakari, he maha ngā whakamahinga o te kowiri tira S31803, he mea tino pai mō ngā taiao ahumahi uaua. Nā te whakakotahitanga pai o te kaha teitei, te ātete ki te waikura, me te kaha ki te whakarewa pono, he mea whiriwhiri nui tēnei puta noa i ngā rāngai pēnei i te tukatuka matū, te hinu me te hau, te miihini moana, te whakaputa pūngao, me te hanga. I a ngā ahumahi e pana tonu ana i ngā rohe o te mahi me te roa, ka noho tonu te S31803 hei rauemi pai e whakarato ana i te uara pumau me te haumaru.

Mō ngā whakaritenga hangarau taipitopito me ngā otinga ritenga, e akiakihia ana ngā tohunga ahumahi ki te tirotiro i ngā pepa raraunga rauemi me te whakapā atu ki ngā kaiwhakarato pono.

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