17-7PH ukuqina (RH950) izinga lokushisa eliphansi lokucisha + ukuguga

17-7PH noma Uhlobo 631 (UNS S17700) luyinsimbi eqinile ye-chromium-nickel aluminium esetshenziswa ekusetshenzisweni kwentwasahlobo ezimbonini eziningi.

Ama-alloys aqinisa imvula angu-7-7 angakhiwa esimweni esithambile se-austenitic futhi abe lukhuni kumazinga wamandla aphezulu ngokwelashwa kokushisa okuphansi. Izinga lokushisa eliphansi livumela ukuguqulwa okuncane uma kuqhathaniswa nokucisha okuvamile kanye nezinqubo zokuqina kwentukuthelo. Esimweni esithambile se-austenitic annealed, 17-7 yakhekeka kakhulu futhi ilungele imisebenzi efana nokudweba, ukugoba, kanye nokwakheka ekugcineni. I-17-7 ikwazi ukushisela kalula kuzo zombili izimo ezifakwe emanzini kanye nezingelashwa ngokushisa.

I-Element:
Ikhabhoni: 0.09 max

I-Manganese: 1.00 max

I-Phosphorus: 0.040 max

Isibabule: 0.030 ubuningi

I-silicon: 1.00 max

I-Chrome: 16.00 - 18.00

I-Nickel: 6.50 - 7.75

I-Aluminium: 0.75 - 1.50

Insimbi: Ibhalansile

Izinto ezibonakalayo:
Iphuzu elincibilikayo: 2550 – 2640°F (1400 – 1450°C)

Ukuminyana: 0.282 lb/in3 / 7.8 g/cm3

I-Tensile Modulus ye-Elasticity (RH 950 ne-TH 1050): 29.6 X 10 6 psi / 204 GPA

Ukuziphatha kwemishini:
Isimo: annealed
I-Tensile Strength Minimum (psi): 130,000

Isivuno Amandla Min. 0.2% Offset (psi): 40,000

2″ Ubude obujwayelekile: 35%

Ukuqina: Rockwell B85

Isimo: lukhuni + ubudala (TH1050)
Amandla Okuqina Okuqinile (psi): 200,000

Amandla Esivuno Okujwayelekile okungu-2% Shift (psi): 185,000

% ubude ku-2″: 9%

Ukuqina: Rockwell C40

Isimo: lukhuni, izinga lokushisa eliphansi lokucisha + ukuguga (RH950)

Amandla Okuqina Okuqinile (psi): 235,000

Amandla Esivuno Okuvamile okungu-2% uhambo (psi): 220,000

% ubude ku-2″: 6%

Ukuqina: Rockwell C48

Isimo: Okubandayo Okugoqiwe/Kusebenzile + Ubudala (CH900)
Amandla Okuqina Okuqinile (psi): 265,000

Amandla Esivuno Okuvamile okungu-2% uhambo (psi): 260,000

% ubude ku-2″: 2%

Ukuqina: Rockwell C49

ukwelashwa ukushisa:
17-7 idinga izinyathelo ezintathu eziyisisekelo ekwelapheni ukushisa:

I-Austenitic conditioning.

Ukupholisa kuguqula i-austenite ibe yi-martensite

Imvula iba nzima ibe yizimo ezingu-TH 1050 noma i-RH 950

Kungenjalo, ukuze kutholwe izakhiwo eziphakeme kakhulu zemishini ku-alloy, isimo A siguqulwa sibe yi-martensite ngokunciphisa amakhaza sibe ku-C kumshini wokugaya. Ukwenza lukhuni esimweni esingu-CH 900 kufezwa ukwelashwa okukodwa okunezinga lokushisa eliphansi lokuguga.