Izinto zensimbi engagqwali 17-4PH

I-17-4PH ishisa kalula. Ngesikhathi sokwelashwa kokushisa noma ukubumba, umoya ovikelayo oqukethe i-carbon noma i-nitrogen kufanele ugwenywe. Lezi zakhi zingamuncwa endaweni yensimbi futhi zinikeze isikhumba esithambile se-austenitic. Uma isimo sokuzivikela sidingeka i-argon noma i-helium iyanconywa.

Ingxubevange iphinde ibe nokuqina okuhle uma ishiselwe, kuyilapho ukwelapha okufushane okushisa okunezinga eliphansi lokushisa kunciphisa ukungqubuzana nokukalwa. Ukwengeza, i-17-4PH kulula ukuyifaka nokuyenza.

Ngenxa yezakhiwo ezizuzisayo, i-17-4PH ithola ukusetshenziswa ezimbonini ezihlukahlukene. Izingxenye ezijwayelekile zihlanganisa izigxivizo zemishini, i-oil patch, nama-pump shafts.

I-Machinability 17-4PH ingenziwa ngomshini kukho kokubili isimo se-annealed kanye nesimo esiqinile semvula. Ngenxa yokuthi izinga lokushisa lokugcina lokwelapha ukushisa liphansi, i-17-4PH ingashintshwa ibe ubukhulu bokugcina esimweni esishubile bese iguga ngaphandle koshintsho olubalulekile lwe-dimensional noma ukukala ngaphandle kwalapho ingxenye inkulu, lapho kufanele kwenziwe imvume yokuncipha lapho ukuguga.
Esimeni esishubile ukwenziwa kwemishini kuhluke kancane kuchungechunge lwezinsimbi ezingenasici ze-austenitic ezingama-300. Esimeni se-H900 izinga lomshini lingama-60% alokho okokusebenza okufakwe emanzini.

UKWAKHIWA KWAKHEMICAL

AMABANGA	I-SS316	17-4PH
Ikhabhoni	0.05	0.06
IManganese	2	0.9
I-Phosphorous	0.045	0.03
Isibabule	0.03	0.02
I-silicon	N/A	0.9
I-Copper, columbium, ne-Tantalum	N/A	4
I-Molybdenum	2.1	N/A
I-Nickel	8	4
I-Chromium	18	17.5

Izakhiwo ze-hysical zensimbi engagqwali 17-4PH

Impahla	I-Imperial	Imethrikhi
Ibanga elincibilikayo	2560-2625 °F	1404-1440 °C
Ukushisa Okuthize	0.11 Btu/lb.-°F	460 Joules/gg-K
Ukuminyana Okuthile	0.282 lb/in3	7.8 g/cm3
Ukungazweli Kagesi	38.6 µΩ in	98µΩ cm
I-Linear Coefficient of Thermal Expansion (70 °F ukuya ku-200 °F) (21 °C kuya ku-93 °C)	6 [ku/in/°F·106]	10.8 [μm/m·°C]
I-Linear Coefficient of Thermal Expansion (70 °F ukuya ku-400 °F) (21 °C kuya ku-204 °C)	6 [ku/in/°F·106]	10.8 [μm/m·°C]
I-Linear Coefficient of Thermal Expansion (70 °F ukuya ku-600 °F) (27 °C kuya ku-316 °C)	6.2 [ku/in/°F·106]	11.2 [μm/m·°C]
I-Linear Coefficient of Thermal Expansion (70 °F ukuya ku-800 °F) (21 °C kuya ku-427 °C)	6.3 [ku/in/°F·106]	11.2 [μm/m·°C]
I-Thermal Conductivity (@ 300 °F) (@ 149 °C)	124 Btu/(ihora/ft²/in/°F)	17.9 [W/m-K]
I-Thermal Conductivity (@ 500 °F) (@ 260 °C)	135 Btu/(ihora/ft²/in/°F)	19.5 [W/m-K]
I-Thermal Conductivity (@ 860 °F) (@ 460 °C)	156 Btu/(ihora/ft²/in/°F)	22.5 [W/m-K]
I-Thermal Conductivity (@ 900 °F) (@ 482 °C)	157 Btu/(ihora/ft²/in/°F)	22.6 [W/m-K]
I-Poisson's Ratio (Isimo se-H900)	0.272	0.272
I-Modulus of Elasticity (H900 Condition)	28 x 106 ksi	197 x 103 MPa
I-Modulus of Rigidity in Torsion	9.68 x 103 ksi	67 x 103 MPa

I-Stainless Steel 17-4PH Mechanical Properties

Impahla	I-Imperial	Imethrikhi
Amandla Okuqina Okugcina	23,300 psi	160 MPa
Amandla Esivuno (0.02%)	16,680 psi	115 MPa
Ukwelula (% ku-2’’)	5%	5%
I-Rockwell Hardness C	35	35

Ukwelashwa Kokushisa

Insimbi Engagqwali engu-17-4PH itholakala kusimo sokufakwa kwesisombululo ku-1900 °F (1038 °C) bese ipholiswa ngomoya ibe ngu-90 °F (32 °C).

Kodwa-ke, ukwelashwa okwengeziwe kokushisa kungaveza ubulukhuni obuhlukahlukene kanye namazinga okuqina. Izindlela zokwelapha ezivame kakhulu zibalwe kuthebula elingezansi.

Isimo	Izinga lokushisa [± 15 °F (± 8.4 °C)]	Indlela Yokupholisa Nobude besikhathi
H900	900 °F (482 °C)	Ukupholisa umoya ihora elingu-1
H925	925 °F (496 °C)	Ukupholisa umoya amahora angu-4
H 1025	1025 °F (551 °C)	Ukupholisa umoya amahora angu-4
H 1075	1075 °F (580 °C)	Ukupholisa umoya amahora angu-4
H 1100	1100 °F (593 °C)	Ukupholisa umoya amahora angu-4
H 1150	1150 °F (621 °C)	Ukupholisa umoya amahora angu-4
H 1150 + 1150	1150 °F (621 °C) ulandelwa ngu 1150 °F (621 °C)	Ukupholisa umoya amahora angu-4 ulandelwa ngu Ukupholisa umoya amahora angu-4
I-H 1150-M	1400 °F (760 °C) ulandelwa ngu 1150 °F (621 °C)	Ukupholisa umoya amahora angu-2 ulandelwa ngu Ukupholisa umoya amahora angu-4