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Takaitaccen Bayani:

Sumul karfe bututu for high zafin jiki aiki ASTM A106, dace da high zafin jiki

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Gwajin Hydrostatic

Don ASTM A106 daidaitaccen gwajin Hydrostatic ana yin su ɗaya bayan ɗaya. yadda za a lissafta bayanai na hydrostatic ga kowane girman?

Misali ga ASTMA106 GrB PSL 2 carbon karfe bututu 273*7mm

Cancantar bayanan da suka cancanta shine: 2*min ƙarfin yawan amfanin ƙasa *0.6 * kauri / Diamita

haka zai kasance:

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

Kun sani yanzu?

Dubawa

Aikace-aikace

Sumul karfe bututu for high zafin jiki aiki ASTM A106, dace da high zafin jiki

Babban Daraja

Matsayi na babban ingancin tsarin ƙarfe na carbon: GR.A, GR.B, GR.C

Abubuwan Sinadari

	Rubutu, （
	Darasi A	Darasi B	Darasi 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
Silikon, min	0.10	0.10	0.10
Chrome, maxC	0.40	0.40	0.40
Copper, 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 Ga kowane raguwa na 0.01% ƙasa da ƙayyadaddun iyakar carbon, haɓakar 0.06% manganese sama da iyakar ƙayyadaddun za a ba da izini har zuwa matsakaicin 1.35%.
B Sai dai in ba haka ba wanda mai siye ya ayyana, ga kowane raguwar 0.01% ƙasa da ƙayyadaddun iyakar carbon, za a ba da izinin haɓaka 0.06% manganese sama da iyakar ƙayyadaddun har zuwa matsakaicin 1.65%.
C Wadannan abubuwa biyar da aka haɗe ba za su wuce 1% ba.

Kayan Injiniya

	Darasi A		Darasi B		Darasi C
Ƙarfin ɗamara, min, psi(MPa)	48000 (330)		60000 (415)		70000 (485)
Ƙarfin Haɓaka, min, psi(MPa)	30000 (205)		35000 (240)		40000 (275)
	Tsayi	Canza	Tsayi	Canza	Tsayi	Canza
Tsawaita cikin inci 2 (50 mm), min, % Mahimmin ƙarancin gwajin tsiri mai tsayi na elongation, kuma ga duk ƙananan girman da aka gwada a cikin cikakken sashe	35	25	30	16.5	30	16.5
Lokacin daidaitaccen zagaye 2-in. (50-mm) ana amfani da samfurin gwajin tsayin ma'auni	28	20	22	12	20	12
Don gwajin tsiri mai tsayi	A		A		A
Don gwaje-gwajen tsiri mai jujjuyawa, ragi ga kowane 1/32-in. (0.8-mm) raguwa a kaurin bangon da ke ƙasa da 5/16 in. (7.9 mm) daga ƙaramin ƙaramar ƙaranci na kashi mai zuwa za a yi.		1.25		1.00		1.00
A mafi ƙarancin elongation a cikin inci 2. (50 mm) za a ƙayyade ta ma'auni mai zuwa:
e=625000A 0.2 / U 0.9
don raka'a-laba, da
e=1940A 0.2 / U 0.9
don raka'a SI,
inda: e = ƙaramar haɓakawa a cikin 2 in. (50 mm), %, zagaye zuwa mafi kusa 0.5%, A = yankin giciye na samfurin gwajin tashin hankali, a cikin.2 (mm2), dangane da ƙayyadaddun diamita na waje ko ƙayyadaddun ƙayyadaddun diamita na waje ko faɗin ƙirar ƙira da ƙayyadadden kauri na bango, zagaye zuwa mafi kusa 0.01 in.2 (1 mm2) . (Idan yankin da aka lissafta haka yana daidai da ko mafi girma fiye da 0.75 in.2 (500 mm2), to za a yi amfani da ƙimar 0.75 in.2 (500 mm2). U = ƙayyadadden ƙarfin ƙarfi, psi (MPa).

Bukatar Gwaji

Baya ga tabbatar da abun da ke tattare da sinadarai da kaddarorin injina, ana yin gwaje-gwajen hydrostatic daya bayan daya, kuma ana yin gwaje-gwajen flaring da flattening. . Bugu da ƙari, akwai wasu buƙatu don ƙananan ƙwayoyin cuta, girman hatsi, da decarburization Layer na bututun ƙarfe da aka gama.