Kini Iyatọ Laarin 17-4PH ati Awọn Irin Irẹlẹ-lile (PH) miiran?

Kini Iyatọ Laarin 17-4PH ati Awọn Irin Irẹlẹ-lile (PH) miiran?

Ifaara

Awọn irin alagbara ti ojoriro-lile (awọn irin PH) jẹ kilasi ti awọn alloy sooro ipata ti o darapọ agbara ti martensitic ati awọn irin austenitic pẹlu idena ipata to dara julọ. Lára wọn,17-4PH irin alagbara, irinjẹ ijiyan julọ ti a lo nitori awọn ohun-ini ẹrọ alailẹgbẹ rẹ ati irọrun ti iṣelọpọ. Ṣugbọn bawo ni o ṣe afiwe si awọn ipele PH miiran bii 15-5PH, 13-8Mo, 17-7PH, ati Aṣa 465? Nkan yii jinlẹ sinu awọn iyatọ ninu akopọ, itọju ooru, awọn ohun-ini ẹrọ, resistance ipata, ati awọn ohun elo.

Akopọ ti ojoriro-lile Awọn irin alagbara

Awọn irin-lile ojoriro gba agbara wọn lati dida awọn itọlẹ ti o dara ni matrix irin lakoko awọn itọju ooru ti ogbo. Awọn irin wọnyi pin si awọn ẹka akọkọ mẹta:

1. Awọn irin PH Martensitic(fun apẹẹrẹ,17-4PH, 15-5PH)
2. Ologbele-austenitic PH awọn irin(fun apẹẹrẹ, 17-7PH)
3. Awọn irin Austenitic PH(fun apẹẹrẹ, A286)

Ẹka kọọkan nfunni ni akojọpọ alailẹgbẹ ti awọn ohun-ini ti a ṣe deede si awọn iwulo ile-iṣẹ kan pato.

17-4PH (UNS S17400): Standard Industry

Tiwqn:

• Kr: 15.0–17.5%
• Ni: 3.0–5.0%
• Kú: 3.0–5.0%
• Nb (Cb): 0.15–0.45%

Ooru Itọju: Solusan-itọju ati ti ogbo (paapa H900 si H1150-M)

Awọn ohun-ini ẹrọ (H900):

• Agbara Agbara: 1310 MPa
• Agbara Ikore: 1170 MPa
• Ilọsiwaju: 10%
• Lile: ~ 44 HRC

Awọn anfani:

• Agbara giga
• Deede ipata resistance
• Ti o dara ẹrọ
• Weldable

Awọn ohun elo:

• Aerospace irinše
• iparun reactors
• Awọn falifu, awọn ọpa, awọn fasteners

Ifiwera pẹlu Awọn Irin Alagbara PH miiran

15-5PH (UNS S15500)

Tiwqn:

• Iru si 17-4PH, ṣugbọn pẹlu tighter idari lori impurities
• Kr: 14.0–15.5%
• Ni: 3.5–5.5%
• Kú: 2.5–4.5%

Awọn Iyatọ bọtini:

• Toughness ifapa dara julọ nitori microstructure ti o dara julọ
• Dara si darí-ini ni nipon ruju

Lo Awọn ọran:

• Aerospace forgings
• Kemikali processing ẹrọ

13-8Mo (UNS S13800)

Tiwqn:

• Kr: 12.25–13.25%
• Ni: 7.5–8.5%
• Mo: 2.0–2.5%

Awọn Iyatọ bọtini:

• Superior toughness ati ipata resistance
• Agbara giga ni awọn apakan agbelebu ti o nipọn
• Awọn iṣakoso akopọ ti o nipọn fun lilo aerospace

Lo Awọn ọran:

• Igbekale Ofurufu irinše
• Awọn orisun omi ti o ga julọ

17-7PH (UNS S17700)

Tiwqn:

• Kr: 16.0–18.0%
• Ni: 6.5–7.75%
• Al: 0.75–1.50%

Awọn Iyatọ bọtini:

• Ologbele-austenitic; nilo iṣẹ tutu ati itọju ooru
• Ipilẹ ti o dara julọ ṣugbọn resistance ipata kekere ju 17-4PH

Lo Awọn ọran:

• Aerospace diaphragms
• Bellows
• Awọn orisun omi

Aṣa 465 (UNS S46500)

Tiwqn:

• Kr: 11.0–13.0%
• Ni: 10.75–11.25%
• Ti: 1.5–2.0%
• Mo: 0.75–1.25%

Awọn Iyatọ bọtini:

• Agbara giga giga (to 200 ksi fifẹ)
• O tayọ ṣẹ egungun toughness
• Iye owo ti o ga julọ

Lo Awọn ọran:

• Awọn irinṣẹ iṣẹ abẹ
• Ofurufu fasteners
• Ibalẹ jia irinše

Ifiwera Itọju Ooru

Ifiwera Resistance Ipata

• Ti o dara julọ:13-8Mo ati Aṣa 465
• O dara:17-4PH ati 15-5PH
• Otitọ:17-7PH

Akiyesi: Ko si ọkan ti o baamu resistance ipata ti awọn iwọn austenitic ni kikun bi 316L.

Machinability ati Weldability

Ifojusi iye owo

• Iye owo ti o munadoko julọ:17-4PH
• Awọn giredi Ere:13-8Mo ati Aṣa 465
• Iwontunwonsi:15-5PH

Awọn ohun elo lafiwe

Lakotan

Ipari

Lakoko ti 17-4PH jẹ irin alagbara irin-ajo si PH fun ọpọlọpọ awọn ohun elo idi gbogbogbo, ipele PH yiyan kọọkan ni awọn anfani ọtọtọ ti o jẹ ki o baamu dara julọ fun awọn ibeere kan pato. Loye awọn nuances laarin awọn alloy wọnyi jẹ ki awọn onimọ-ẹrọ ohun elo ati awọn olura lati ṣe awọn ipinnu alaye ti o da lori agbara, lile, resistance ipata, ati idiyele.