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Nkọwa dị mkpirikpi:

Igwe anaghị agba nchara maka ọrụ okpomọkụ dị elu ASTM A106, dabara maka oke okpomọkụ

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Ọrụ ndị ọzọ- Anyị nwere ike ịchọta ndị ahịa ọkpọkọ ígwè na-adịghị na ụlọ nkwakọba ihe anyị.

Nchịkọta

Ngwa

Igwe anaghị agba nchara maka ọrụ okpomọkụ dị elu ASTM A106, dabara maka oke okpomọkụ

Isi ọkwa

Ọkwa nke igwe nrụpụta carbon dị elu: GR.A, GR.B, GR.C

Ngwakọta kemịkalụ

	Nhazi, （
	Ọkwa A	Ọkwa B	Ọkwa 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
Silikoni, min	0.10	0.10	0.10
Chrome, maxC	0.40	0.40	0.40
Ọla kọpa, maxC	0.40	0.40	0.40
Molybdenum, maxC	0.15	0.15	0.15
Nickel, maxC	0.40	0.40	0.40
Vanadium, maxC	0.08	0.08	0.08
A Maka mbelata ọ bụla nke 0.01% n'okpuru oke carbon akọwapụtara, mmụba nke 0.06% manganese karịa nke akọwapụtara ka a ga-ahapụ ruo oke nke 1.35%.
B Ọ gwụla ma onye zụrụ ya akọwapụtaghị ya, maka mbelata ọ bụla nke 0.01% n'okpuru oke carbon a kapịrị ọnụ, mmụba nke 0.06% manganese karịa nke akọwapụtara ka a ga-ahapụ ruo oke 1.65%.
C ihe ise a jikọtara agaghị agafe 1%.

Ngwongwo igwe

	Ọkwa A		Ọkwa B		Ọkwa C
Ike tensile, min, psi(MPa)	48 000 (330)		60000 (415)		70000 (485)
Ike mpụta, min, psi(MPa)	30000 (205)		35 000 (240)		40000 (275)
	Ogologo ogologo	Transverse	Ogologo ogologo	Transverse	Ogologo ogologo	Transverse
Mgbatị n'ime inch 2 (50 mm), nkeji, % Basic kacha nta elongation transverse warara ule, na niile obere nha nwalere na zuru ngalaba	35	25	30	16.5	30	16.5
Mgbe ọkọlọtọ gburugburu 2-in. (50-mm) a na-eji ihe nlere anya ogologo nlele	28	20	22	12	20	12
Maka ule eriri ogologo ogologo	A		A		A
Maka ule ntụgharị ntụgharị, mwepu maka 1/32-in ọ bụla. (0.8-mm) mbelata nke mgbidi dị n'okpuru 5/16 inch (7.9 mm) site na ntinye kacha nta nke kacha nta nke pasent ndị a ga-eme.		1.25		1.00		1.00
A ga-ekpebi elongation kacha nta na inch 2 (50 mm) site na nha nha ndị a:
e=625000A 0.2 / U 0.9
maka nkeji inch-paụnd, na
e=1940A 0.2 / U 0.9
maka nkeji SI,
ebe: e = elongation kacha nta na 2 in. (50 mm), %, gbachie na 0.5% kacha nso, A = mpaghara obe nke ihe nlere ule erughị ala, in.2 (mm2), dabere na nke akọwapụtara n'èzí ma ọ bụ n'ọnụ ọnụ nke akọwapụtara n'èzí dayameta ma ọ bụ obosara ihe atụ na ọkpụrụkpụ mgbidi akọwapụtara, gbachie na 0.01 in.2 (1 mm2) kacha nso. . (Ọ bụrụ na mpaghara si otú a gbakọọ hà nhata ma ọ bụ karịa 0.75 in.2 (500 mm2), mgbe ahụ, uru 0.75 in.2 (500 mm2) ga-eji.), na U = ike tensile akọwapụtara, psi (MPa).

Achọrọ nnwale

Na mgbakwunye na ịgba mbọ hụ na mejupụtara kemịkalụ na akụrụngwa akụrụngwa, a na-eme nnwale hydrostatic n'otu n'otu, a na-eme nnwale flaring na flattening. . Na mgbakwunye, enwere ụfọdụ ihe achọrọ maka microstructure, nha ọka, na oyi akwa decarburization nke ọkpọkọ ígwè emechara.