Bakin karfe 17-4PH

17-4PH yana da saurin ƙirƙira mai zafi. A lokacin jiyya na zafi ko ƙirƙira, ya kamata a guji yanayin kariya mai ɗauke da carbon ko nitrogen. Wadannan abubuwa za a iya shafe su a cikin saman karfe kuma suna ba da fata mai laushi austenitic. Idan ana buƙatar yanayin kariya ana ba da shawarar argon ko helium.

Har ila yau, gami yana da tauri mai kyau idan aka yi masa walda, yayin da gajeriyar jiyya na zafi mai zafi yana rage warping da ƙima. Bugu da ƙari, 17-4PH yana da sauƙin inji da ƙirƙira.

Godiya ga kaddarorin masu amfani, 17-4PH yana samun amfani a cikin masana'antu daban-daban. Abubuwan da aka saba sun haɗa da hatimin inji, facin mai, da ramukan famfo.

Machinability 17-4PH za a iya yin amfani da shi a cikin yanayin yanayin da aka shafe da kuma yanayin hazo mai taurare. Saboda zafin zafin zafi na ƙarshe yana da ƙasa, 17-4PH za a iya sarrafa shi zuwa girma na ƙarshe a cikin yanayin da aka ɓoye sannan kuma ya tsufa ba tare da babban canji ko ƙima ba sai dai idan ɓangaren yana da girma, lokacin da ya kamata a ba da izini don ƙaddamarwa akan tsufa.
A cikin yanayin da aka cire kayan aikin injin ɗin ya bambanta kaɗan da jerin 300 austenitic bakin karafa. A cikin yanayin H900 ƙimar mashin ɗin shine 60% na abin da aka goge.

HADIN KASHIN KIMIYYA

MALAMAI	Saukewa: SS316	17-4PH
Carbon	0.05	0.06
Manganese	2	0.9
Phosphorous	0.045	0.03
Sulfur	0.03	0.02
Siliki	N/A	0.9
Copper, columbium, da Tantalum	N/A	4
Molybdenum	2.1	N/A
Nickel	8	4
Chromium	18	17.5

Abubuwan Haɓakawa na Bakin Karfe 17-4PH

Dukiya	Imperial	Ma'auni
Rage Narkewa	2560-2625 °F	1404-1440 ° C
Takamaiman Zafi	0.11 Btu /lb.-°F	460 Joules /gg-K
Takamaiman yawa	0.282 lb /in3	7.8g /cm3
Juriya na Lantarki	38.6 μΩ in	98 µΩ cm
Layin Layi na Ƙarfin Ƙarfafawar thermal (70 °F zuwa 200 °F) (21 °C zuwa 93 °C)	6 [a cikin /in/°F·106]	10.8 [μm /m·°C]
Layin Layi na Ƙarfin Ƙarfafawar thermal (70 °F zuwa 400 °F) (21 °C zuwa 204 °C)	6 [a cikin /in/°F·106]	10.8 [μm /m·°C]
Madaidaicin Ƙirar Ƙarfafawar Ƙarfin zafi (70 °F zuwa 600 °F) (27 °C zuwa 316 °C)	6.2 [a cikin /in/°F·106]	11.2 [μm /m·°C]
Layin Layi na Ƙarfin Ƙarfafawar thermal (70 °F zuwa 800 °F) (21 °C zuwa 427 °C)	6.3 [a cikin /in/°F·106]	11.2 [μm /m·°C]
Haɓakar zafi (@ 300 °F) (@ 149 °C)	124 Btu /(hr/ft²/in/°F)	17.9 [W/m-K]
Ƙarfin Ƙarfi (@ 500 °F) (@ 260 °C)	135 Btu /(hr/ft²/in/°F)	19.5 [W/m-K]
Haɓakar zafi (@ 860 °F) (@ 460 °C)	156 Btu /(hr/ft²/in/°F)	22.5 [W/m-K]
Haɓakar zafi (@ 900 °F) (@ 482 °C)	157 Btu /(hr/ft²/in/°F)	22.6 [W/m-K]
Rabon Poisson (Sharadi H900)	0.272	0.272
Modulus na elasticity (Yanayin H900)	28 x 106 ksi	197 x 103 MPa
Modulus na Rigidity a cikin Torsion	9.68 x 103 ksi	67 x 103 MPa

Bakin Karfe 17-4PH Kayayyakin Injini

Dukiya	Imperial	Ma'auni
Ƙarfin Ƙarfin Ƙarfi	23,300 psi	160 MPa
Ƙarfin Haɓaka (0.02%)	16,680 psi	115 MPa
Tsawaitawa (% cikin 2'')	5%	5%
Rockwell Hardness C	35	35

Maganin Zafi

Bakin Karfe 17-4PH yana samuwa a cikin yanayin warware matsalar a 1900 °F (1038 °C) sannan a sanyaya iska zuwa 90 °F (32 ° C).

Koyaya, ƙarin jiyya na zafi na iya haifar da tauri daban-daban da matakan tauri. An jera mafi yawan jiyya a cikin tebur da ke ƙasa.

Sharadi	Zazzabi [± 15 °F (± 8.4 °C)]	Hanyar sanyaya da Tsawon lokaci
H 900	900 °F (482 ° C)	Sanyaya iska na awa 1
H 925	925°F (496°C)	Sanyaya iska na awa 4
H 1025	1025 ° F (551 ° C)	Sanyaya iska na awa 4
H 1075	1075 °F (580 ° C)	Sanyaya iska na awa 4
H 1100	1100 °F (593 ° C)	Sanyaya iska na awa 4
H 1150	1150°F (621°C)	Sanyaya iska na awa 4
H 1150 + 1150	1150°F (621°C) ta biyo baya 1150°F (621°C)	Sanyaya iska na awa 4 ta biyo baya Sanyaya iska na awa 4
H 1150-M	1400°F (760°C) ta biyo baya 1150°F (621°C)	Sanyaya iska na awanni 2 ta biyo baya Sanyaya iska na awa 4