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ʻO ka wehewehe pōkole:

ʻO ka paipu kila maʻemaʻe no ka hana wela kiʻekiʻe ASTM A106, kūpono no ka wela kiʻekiʻe

E hoʻouna i ka leka uila iā mākou Hoʻoiho ma ke ʻano he PDF

Huahana Huahana

Hōʻike hydrostatic

No ka ASTM A106 maʻamau Hydrostatic ho'āʻo e hana hoʻokahi. Pehea e helu ai i ka ʻikepili o ka hydrostatic no kēlā me kēia nui?

No ka laʻana no ASTMA106 GrB PSL 2 paipu kila kalapona 273*7mm

ʻO ka ʻikepili kūpono he: 2*min ka ikaika hua *0.6 * mānoanoa/ Anawaena

pela no:

2*245*0.6*7/273=7.5 MPa

ʻIke ʻoe i kēia manawa ?

Nānā nui

Palapala noi

ʻO ka paipu kila maʻemaʻe no ka hana wela kiʻekiʻe ASTM A106, kūpono no ka wela kiʻekiʻe

Papa Nui

Papa o ke kila kalapona kiʻekiʻe: GR.A,GR.B,GR.C

Mea Kimia

	Hui, ％
	Papa A	Papa B	Papa C
Carbon, max	0.25A	0.3B	0.35B
Manganese	0.27-0.93	0.29-1.06	0.29-1.06
Phosphorus, max	0.035	0.035	0.035
Sulfur, max	0.035	0.035	0.035
Silika, min	0.10	0.10	0.10
Chrome, maxC	0.40	0.40	0.40
Ke keleawe, maxC	0.40	0.40	0.40
Molybdenum, maxC	0.15	0.15	0.15
Nikela, maxC	0.40	0.40	0.40
Vanadium, maxC	0.08	0.08	0.08
A No kēlā me kēia hōʻemi o 0.01% ma lalo o ka nui kalapona i ʻōlelo ʻia, e ʻae ʻia ka piʻi ʻana o 0.06% manganese ma luna o ka palena kiʻekiʻe a hiki i ka 1.35%.
B Inā ʻaʻole i ʻōlelo ʻia e ka mea kūʻai aku, no kēlā me kēia hōʻemi o 0.01% ma lalo o ke kalapona kiʻekiʻe i ʻōlelo ʻia, e ʻae ʻia ka piʻi ʻana o 0.06% manganese ma luna o ka palena kiʻekiʻe a hiki i ka 1.65%.
C ʻAʻole ʻoi aku ka nui o kēia mau mea ʻelima i ka 1%.

Waiwai Mekani

	Papa A		Papa B		Papa C
Ka ikaika uʻi, min, psi(MPa)	48 000(330)		60 000(415)		70 000(485)
Ka ikaika hua, min, psi(MPa)	30 000(205)		35 000(240)		40 000(275)
	Ka lōʻihi	Kūʻē	Ka lōʻihi	Kūʻē	Ka lōʻihi	Kūʻē
Elongation ma 2 in. (50 mm), min, % Nā ho'āʻo hoʻāʻo transverse elongation liʻiliʻi loa, a no nā nui liʻiliʻi āpau i hoʻāʻo ʻia ma ka pauku piha	35	25	30	16.5	30	16.5
I ka wā maʻamau puni 2-in. (50-mm) ana ka loa ho'āʻo specimen hoʻohana	28	20	22	12	20	12
No nā hoʻokolohua lōʻihi lōʻihi	A		A		A
No nā hoʻāʻo ʻāwīwī, he unuhi no kēlā me kēia 1/32-in. (0.8-mm) emi i ka mānoanoa o ka pā ma lalo o 5/16 in. (7.9 mm) mai ka li'ili'i li'ili'i loa elongation e hana 'ia.		1.25		1.00		1.00
A E hoʻoholo ʻia ka elongation liʻiliʻi ma 2 in. (50 mm) e ka hoohalike penei:
e=625000A 0.2 / U 0.9
no na huina iniha-pauna, a
e=1940A 0.2 / U 0.9
no nā ʻāpana SI,
ma hea: e = ka lōʻihi liʻiliʻi ma ka 2 in. (50 mm), %, hoʻopuni ʻia i ka 0.5% kokoke loa, A = ʻāpana keʻa o ka hōʻike hoʻāʻo hoʻopaʻapaʻa, in.2 (mm2), ma muli o ke anawaena waho a i ʻole ke anawaena i koho ʻia i waho a i ʻole ka laulā kikoʻī kikoʻī a me ka mānoanoa o ka pā i kuhikuhi ʻia, i hoʻopuni ʻia i ka 0.01 in.2 (1 mm2) kokoke loa. . (Inā like a ʻoi aku paha ka ʻāpana i helu ʻia ma mua o 0.75 in.2 (500 mm2), a laila e hoʻohana ʻia ka waiwai 0.75 in.2 (500 mm2). U = ikaika tensile i kuhikuhi ʻia, psi (MPa).

Koi hoao

Ma kahi o ka hōʻoia ʻana i ka haku melemele a me nā waiwai mechanical, hana ʻia nā hoʻokolohua hydrostatic i kēlā me kēia, a hana ʻia nā hoʻāʻo flaring a flattening. . Eia kekahi, aia kekahi mau koi no ka microstructure, ka nui o ka palaoa, a me ka papa decarburization o ka paipu kila i hoʻopau ʻia.