haku mele ʻana

Gr.3: Carbon content ≤0.19%, silicon content 0.18% -0.37%, manganese content 0.31% -0.64%, phosphorus and sulfur content ≤0.025%, a he 3.18% -3.82% nickel kekahi.

Gr.6: Carbon content ≤0.30%, silicon content ≥0.10%, manganese content 0.29% -1.06%, phosphorus and sulfur content All ≤0.025%.

Nā waiwai mīkini

Gr.3: tensile ikaika ≥450MPa, hua ikaika ≥240MPa, elongation ≥30% longitudinally, ≥20% transversely, haʻahaʻa haʻahaʻa haʻahaʻa ho'āʻo wela -150 ° F (-100 ° C).

Gr.6: tensile ikaika ≥415MPa, hua ikaika ≥240MPa, elongation ≥30% longitudinally, ≥16.5% transversely, haʻahaʻa haʻahaʻa ho'āʻo wela -50 ° F (-45 ° C).

Kaʻina hana hana

Hoʻoheheʻe: E hoʻohana i ka umu uila a mea hoʻololi a me nā mea hana ʻē aʻe e deoxidize, wehe i ka slag a hoʻohui i ke kila hoʻoheheʻe e loaʻa ai ke kila hoʻoheheʻe maʻemaʻe.

ʻO ka ʻōwili: E hoʻoheheʻe i ke kila hoʻoheheʻe ʻia i loko o ka pahu wili ʻōwili no ka ʻōwili ʻana, e hoʻemi mālie i ke anawaena o ka paipu a loaʻa ka mānoanoa o ka pā i makemake ʻia, a i ka manawa like, hoʻomaʻamaʻa i ka ʻili o ka paipu kila.

ʻO ka hana anu: Ma o ka hana anu e like me ke kiʻi anu a i ʻole ka ʻōwili anu, hiki ke hoʻomaikaʻi hou ʻia ka pololei a me ka maikaʻi o ka ʻili o ka paipu kila.

Hoʻomaʻamaʻa wela: ʻO ka mea maʻamau, hāʻawi ʻia ia ma ka normalizing a i ʻole ka normalizing a me ka tempering state e hoʻopau i ke koena koʻikoʻi i loko o ka paipu kila a hoʻomaikaʻi i kāna hana piha.

Kahua noi

Petrochemical: Hoʻohana ʻia no ka hana ʻana i nā pipeline moku haʻahaʻa haʻahaʻa haʻahaʻa a me nā paipu hoʻololi wela haʻahaʻa i ke kula o ka ʻaila, ʻoihana kemika, etc.

Kinea kūlohelohe: He kūpono no nā paipu hoʻoili kinoea kūlohelohe a me nā pahu mālama kinoea a me nā mea hana ʻē aʻe e hōʻoia i ka hana palekana ma nā wahi wela haʻahaʻa.

Nā kahua ʻē aʻe: Hoʻohana ʻia ia i ka mana, aerospace, a me ka hana moku, e like me nā mea hana nui no nā condensers, boilers a me nā mea hana ʻē aʻe i nā lako mana, a me nā mea hana nui no nā ʻōnaehana hydraulic, nā ʻōnaehana wahie a me nā mea hana ʻē aʻe i ke kahua aerospace.

Nā kikoʻī a me nā ana

ʻO nā kikoʻī maʻamau a me nā ana he ākea ākea, e like me ke anawaena o waho 21.3-711mm, ka mānoanoa o ka pā 2-120mm, etc.
Gr.6 paipu kila maʻemaʻe, ʻoi aku ka ASTM A333/A333M GR.6 a i ʻole SA-333/SA333M GR.6ʻO ka paipu kila liʻiliʻi haʻahaʻa haʻahaʻa haʻahaʻa, he mea koʻikoʻi ʻoihana, hoʻohana nui ʻia i nā manawa like ʻole e koi ana i ka paʻakikī haʻahaʻa haʻahaʻa a me ka ikaika kiʻekiʻe. ʻO kēia ka hōʻike kikoʻī i ka Gr.6 seamless steel pipe:

1. Nā kūlana hoʻokō a me nā mea hana

Nā kūlana hoʻokō: Gr.6 seamless steel pipe e hoʻokō ana i nā kūlana ASTM A333 / A333M a i ʻole ASME SA-333 / SA333M, i hoʻopuka ʻia e ka American Society for Testing and Materials (ASTM) a me ka American Society of Mechanical Engineers (ASME) a ​​ua hoʻohana pono ʻia e kuhikuhi i nā koi ʻenehana no nā paipu kila wela haʻahaʻa.

Material: Gr.6 seamless kila paipu mea he nickel-free haʻahaʻa-mehana kila paipu, e hoʻohana aluminika-deoxidized maikai-grained haʻahaʻa haʻahaʻa toughness kila, no hoi i ike aluminika-pepehi kila. ʻO kona ʻano metallographic he ferrite cubic i waena o ke kino.

2. Hoʻohui kemika

ʻO ka hui kemika o Gr.6 seamless steel pipe ka nui o nā:

Carbon (C): He haʻahaʻa ka ʻike, ʻaʻole ma mua o 0.30%, e kōkua ana e hōʻemi i ka palupalu o ke kila.

Manganese (Mn): Aia ka ʻike ma waena o 0.29% a me 1.06%, hiki ke hoʻomaikaʻi i ka ikaika a me ka paʻakikī o ke kila.

Silicon (Si): Aia ka ʻike ma waena o 0.10% a me 0.37%, e kōkua ana i ke kaʻina deoxidation o ke kila a hiki ke hoʻonui i ka ikaika o ke kila i kekahi ʻano.

ʻO ka Phosphorus (P) a me ka sulfur (S): Ma ke ʻano he mea haumia, ua kaupalena ʻia ko lākou ʻike, ʻaʻole i ʻoi aku ma mua o 0.025%, no ka mea, ʻo ka nui o ka phosphorus a me ka sulfur e hōʻemi i ka paʻakikī a me ka weldability o ke kila.

ʻO nā mea hoʻohui'ē aʻe: e like me chromium (Cr), nickel (Ni), molybdenum (Mo), a me nā mea'ē aʻe, ua hoʻomaluʻia kā lākou mau mea ma kahi haʻahaʻa e hōʻoia i ka hana haʻahaʻa haʻahaʻa a me ka hana piha o ke kila.

3. Nā waiwai mīkini

Gr.6 seamless kila paipu i maikai mechanical waiwai, nui me:

Ka ikaika tensile: ʻO ka maʻamau ma waena o 415 a me 655 MPa, ka mea e hōʻoiaʻiʻo ai e hiki i ka paipu kila ke mālama i ka pono o ka hana a pale i ka haki ʻana i ka wā i lalo o ke kaomi.

Ka ikaika hua: ʻO ka waiwai liʻiliʻi ma kahi o 240 MPa (hiki iā ia ke piʻi aku ma mua o 200 MPa), i ʻole e hoʻohua i ka deformation nui ma lalo o kekahi mau mana o waho.

Elongation: ʻaʻole liʻiliʻi ma mua o 30%, ʻo ia hoʻi ka maikaʻi o ka paipu kila i ka hiki ke hoʻololi i ka plastic a hiki ke hana i kekahi deformation me ka ʻole o ka haki ʻana i ka wā e hoʻolōʻihi ʻia e ka ikaika o waho. He mea koʻikoʻi kēia no ka hoʻohana ʻana i nā kaiapuni haʻahaʻa haʻahaʻa, no ka mea, hiki i ka haʻahaʻa haʻahaʻa ke hana i nā mea, a hiki i ka plasticity maikaʻi ke hoʻēmi i ka pilikia o ia embrittlement.

ʻO ka paʻakikī o ka hopena: Ma kahi mahana haʻahaʻa i ʻōlelo ʻia (e like me -45 ° C), pono e hoʻokō ka ikehu hopena i kekahi mau koi helu ma o ka hōʻoia hōʻoia ʻana i ka hopena Charpy i mea e hōʻoia ai ʻaʻole e haki ka paipu kila ma lalo o ka hopena haʻahaʻa haʻahaʻa.