Zida zosapanga dzimbiri 17-4PH

17-4PH ndiyotentha kwambiri. Pa kutentha kapena kupangira, mpweya woteteza wokhala ndi carbon kapena nitrogen uyenera kupewedwa. Zinthu izi zimatha kulowetsedwa muzitsulo zachitsulo ndikupatsa khungu lofewa la austenitic. Ngati mlengalenga woteteza ukufunika argon kapena helium akulimbikitsidwa.

Alloy imakhalanso ndi kulimba kwabwino ikawotchedwa, pomwe njira zazifupi zotenthetsera kutentha zimachepetsa kupindika ndi kukulitsa. Kuphatikiza apo, 17-4PH ndiyosavuta kupanga ndi kupanga.

Chifukwa cha zopindulitsa, 17-4PH imapeza ntchito m'mafakitale osiyanasiyana. Zigawo zodziwika bwino zimaphatikizapo zisindikizo zamakina, chigamba chamafuta, ndi ma shaft amapope.

Kuthekera kwa 17-4PH kumatha kupangidwanso munjira zonse zomwe zili ndi yankho komanso mvula. Chifukwa kutentha komaliza kwa kutentha kwa kutentha kumakhala kochepa, 17-4PH ikhoza kupangidwa kuti ikhale yomaliza mu chikhalidwe cha annealed ndikukhala okalamba popanda kusintha kwakukulu kapena kukulitsa pokhapokha ngati chigawocho chili chachikulu, pamene chilolezo chiyenera kuperekedwa kuti chichepetse ukalamba.
Mu annealed condition Machining amasiyana pang'ono ndi 300 mndandanda austenitic zitsulo zosapanga dzimbiri. Mumkhalidwe wa H900 kuchuluka kwa makina ndi 60% yazomwe zimapangidwira.

KUPANGA KWA CHEMICAL

MFUNDO	Chithunzi cha SS316	17-4 PH
Mpweya	0.05	0.06
Manganese	2	0.9
Phosphorous	0.045	0.03
Sulfure	0.03	0.02
Silikoni	N / A	0.9
Copper, columbium, ndi Tantalum	N / A	4
Molybdenum	2.1	N / A
Nickel	8	4
Chromium	18	17.5

hysical Properties of Stainless Steel 17-4PH

Katundu	Imperial	Metric
Kusungunula Range	2560-2625 °F	1404-1440 °C
Kutentha Kwapadera	0.11 Btu/lb.-°F	460 Joules/gg-K
Specific Density	0.282 lb/mu3	7.8g/cm3
Kukaniza Magetsi	38.6µΩ mkati	98µΩ cm
Linear Coefficient of Thermal Expansion (70 °F mpaka 200 °F) (21 °C mpaka 93 °C)	6 [mu/mu/°F·106]	10.8 [μm/m·°C]
Linear Coefficient of Thermal Expansion (70 °F mpaka 400 °F) (21 °C mpaka 204 °C)	6 [mu/mu/°F·106]	10.8 [μm/m·°C]
Linear Coefficient of Thermal Expansion (70 °F mpaka 600 °F) (27 °C mpaka 316 °C)	6.2 [mu/mu/°F·106]	11.2 [μm/m·°C]
Linear Coefficient of Thermal Expansion (70 °F mpaka 800 °F) (21 °C mpaka 427 °C)	6.3 [mu/mu/°F·106]	11.2 [μm/m·°C]
Thermal Conductivity (@ 300 °F) (@ 149 °C)	124 Btu/(hr/ft²/mu/°F)	17.9 [W/m-K]
Thermal Conductivity (@ 500 °F) (@ 260 °C)	135 Btu/(hr/ft²/mu/°F)	19.5 [W/m-K]
Thermal Conductivity (@ 860 °F) (@ 460 °C)	156 Btu/(hr/ft²/mu/°F)	22.5 [W/m-K]
Thermal Conductivity (@ 900 °F) (@ 482 °C)	157 Btu/(hr/ft²/mu/°F)	22.6 [W/m-K]
Poisson's Ratio (H900 Condition)	0.272	0.272
Modulus of Elasticity (H900 Condition)	28 x 106 ksi	197 x 103 MPa
Modulus of Rigidity in Torsion	9.68 x 103 ksi	67 x 103 MPa

Zitsulo Zosapanga dzimbiri 17-4PH Mechanical Properties

Katundu	Imperial	Metric
Ultimate Tensile Mphamvu	23,300 psi	160 MPa
Mphamvu Zokolola (0.02%)	16,680 psi	115 MPa
Elongation (% mu 2'')	5%	5%
Rockwell Hardness C	35	35

Kutentha Chithandizo

Chitsulo Chosapanga dzimbiri 17-4PH chimapezeka munjira yotsekera pa 1900 °F (1038 °C) kenako ndikuzizidwa ndi mpweya mpaka 90 °F (32 °C).

Komabe, mankhwala owonjezera otentha amatha kubweretsa kuuma kosiyanasiyana komanso kulimba. Mankhwala odziwika bwino alembedwa mu tebulo ili m'munsimu.

Mkhalidwe	Kutentha [± 15 °F (± 8.4 °C)]	Njira Yozizirira ndi Nthawi Yake
pa H900	900 °F (482 °C)	Kuziziritsa mpweya kwa ola limodzi
ndi h925	925 °F (496 °C)	Kuziziritsa kwa mpweya kwa maola 4
Mtengo wa H1025	1025 °F (551 °C)	Kuziziritsa kwa mpweya kwa maola 4
Mtengo wa h1075	1075 °F (580 °C)	Kuziziritsa kwa mpweya kwa maola 4
Mtengo wa H1100	1100 °F (593 °C)	Kuziziritsa kwa mpweya kwa maola 4
Mtengo wa H1150	1150 °F (621 °C)	Kuziziritsa kwa mpweya kwa maola 4
H 1150 + 1150	1150 °F (621 °C) otsatidwa ndi 1150 °F (621 °C)	Kuziziritsa kwa mpweya kwa maola 4 otsatidwa ndi Kuziziritsa kwa mpweya kwa maola 4
H 1150-M	1400 °F (760 °C) otsatidwa ndi 1150 °F (621 °C)	Kuziziritsa kwa mpweya kwa maola awiri otsatidwa ndi Kuziziritsa kwa mpweya kwa maola 4