347 / 347H Paipu Kuhili ʻole

HOIKE

ʻO ke kila kila 347 / 347H he ʻano austenitic o ke kila chromium, aia ka columbium ma ke ʻano he mea hoʻokūpaʻa. Hiki ke hoʻohui ʻia ʻo Tantalum no ka hoʻokō ʻana i ka stabilization. Hoʻopau kēia i ka ua carbide, a me ka corrosion intergranular i nā paipu kila. Hāʻawi nā ʻano paipu kila kila 347 / 347H ʻoi aku ka kiʻekiʻe o nā mea kolo a me ke kaumaha ma mua o ka papa 304 a me 304L. ʻO kēia ka mea kūpono iā lākou no ka hoʻolaha ʻana i ka sensitization a me ka corrosion intergranular. Eia kekahi, ʻo ka hoʻokomo ʻana o ka columbium e hiki ai i nā paipu 347 ke loaʻa i ke kūpaʻa corrosion maikaʻi loa, ʻoi aku ka maikaʻi ma mua o nā paipu 321 stainless steel. Eia nō naʻe, ʻo ka 347H kila ka mea kiʻekiʻe o ke kalapona hoʻohui i pani ʻia o ka paipu kila kila 347. No laila, hāʻawi ʻia nā paipu kila 347H i ʻoi aku ka maikaʻi o ka wela kiʻekiʻe a me nā waiwai kolo.

347 / 347H NA WAIWAI PALAPALA OLE

Eia nā waiwai o nā paipu kila kila 347 / 347H i hāʻawi ʻia e Arch City Steel & Alloy:

 

Paʻa ʻino:

 

  • Hōʻike i ka pale ʻana i ka oxidation e like me nā kila kuhili ʻē aʻe austenitic
  • Makemake 'ia ma mua o ka papa 321 no ka wai a me nā wahi wela ha'aha'a
  • ʻOi aku ka maikaʻi o nā waiwai wela ma mua o 304 a i ʻole 304L
  • Kūleʻa maikaʻi i ka sensitization ma nā wahi wela kiʻekiʻe
  • He kūpono no nā mea hana welded kaumaha ʻaʻole hiki ke hoʻopili ʻia
  • Hoʻohana ʻia no nā lako hana ma waena o 800 a 150°F (427 TO 816°C)

 

Weldability:

 

  • ʻO 347 / 347H nā paipu kila kila / paipu i manaʻo ʻia ʻo ia ka mea hiki ke weldable ma waena o nā paipu kila kila kiʻekiʻe.

  • Hiki iā lākou ke welded e nā kaʻina hana kālepa a pau

 

Hana wela:

 

  • ʻO 347 / 347H nā paipu kila kila a me nā paipu e hāʻawi i kahi pae wela annealing o 1800 a 2000 ° F

  • Hiki iā lākou ke hoʻomaha i ka pilikia me ka ʻole o ka pōʻino o ka corrosion intergranular ma hope o ka carbide precipitation range o 800 a 1500 ° F.

  • ʻAʻole hiki ke paʻakikī me ka mālama wela

 

Nā noi:

 

Hoʻohana pinepine ʻia nā paipu 347 / 347H no ka hana ʻana i nā mea pono e hoʻohana ʻia ma lalo o nā kūlana corrosive koʻikoʻi. Eia kekahi, hoʻohana pinepine ʻia lākou i nā ʻoihana hoʻomaʻemaʻe ʻaila. Loaʻa nā noi nui:

 

  • Nā hana kemika wela kiʻekiʻe
  • Nā paipu hoʻololi wela
  • ʻO nā paipu mahu kiʻekiʻe
  • ʻO ka mahu wela a me nā paipu paila
  • Nā ʻōnaehana hoʻoheheʻe kaumaha
  • ʻO nā mea hoʻomehana hoʻomālamalama
  • Paipu hoʻoheheʻe maʻamau

 

HANA KEMIIKA

 

Hoʻohui Kemika maʻamau % (nā waiwai kiʻekiʻe, ke ʻole ka ʻike ʻia)
Papa C Cr Mn Ni P S Si Cb/Ta
347 0.08 ka nui min: 17.0
ka nui: 20.0		 2.0 ka nui min: 9.0
ka nui: 13.0		 0.04 ka nui 0.30 ka nui 0.75 ka nui min:10x C
ka nui: 1.0
347H min: 0.04
ka nui: 0.10		 min: 17.0
ka nui: 20.0		 2.0 ka nui min: 9.0
ka nui: 13.0		 0.03 ka nui 0.30 ka nui 0.75 ka nui min:10x C
ka nui: 1.0
Ka manawa kau: Oct-09-2020