Menene Bambanci Tsakanin 17-4PH da Sauran Karfe-Hardening (PH)?

Menene Bambanci Tsakanin 17-4PH da Sauran Karfe-Hardening (PH)?

Gabatarwa

Hazo-hardening bakin karfe (PH steels) aji ne na lalata-resistant gami cewa hada ƙarfin martensitic da austenitic karfe tare da m lalata juriya. Tsakanin su,17-4PH bakin karfeza a iya cewa shi ne mafi yadu amfani saboda ta kwarai inji Properties da sauƙi na ƙirƙira. Amma ta yaya aka kwatanta da sauran maki PH kamar 15-5PH, 13-8Mo, 17-7PH, da Custom 465? Wannan labarin ya zurfafa cikin bambance-bambance a cikin abun da ke ciki, maganin zafi, kaddarorin inji, juriya na lalata, da aikace-aikace.

Bayanin Hazo-Hardening Bakin Karfe

Hazo-hardening karafa samun ƙarfi daga samuwar m hazo a cikin karfe matrix a lokacin tsufa zafi jiyya. Wadannan karafa sun kasu zuwa manyan sassa uku:

1. Abubuwan da aka bayar na Martensitic PH(misali,17-4PH, 15-5PH)
2. Semi-austenitic PH karfe(misali, 17-7PH)
3. Austenitic PH karfe(misali, A286)

Kowane nau'i yana ba da haɗin keɓantaccen haɗin kaddarorin da aka keɓance ga takamaiman buƙatun masana'antu.

17-4PH (UNS S17400): Matsayin Masana'antu

Abun ciki:

• C: 15.0-17.5%
• Ni: 3.0-5.0%
• Ku: 3.0-5.0%
• Nb (Cb): 0.15-0.45%

Maganin zafiMagani-maganin da shekaru (yawanci H900 zuwa H1150-M)

Kayayyakin Injini (H900):

• Ƙarfin Ƙarfin Ƙarfi: 1310 MPa
• Ƙarfin Haɓaka: 1170 MPa
• Tsawaitawa: 10%
• Taurin: ~ 44 HRC

Amfani:

• Babban ƙarfi
• Matsakaicin juriya na lalata
• Kyakkyawan inji
• Weldable

Aikace-aikace:

• Abubuwan haɗin sararin samaniya
• Makamin nukiliya
• Bawuloli, shafts, fasteners

Kwatanta da Sauran Bakin Karfe na PH

15-5PH (UNS S15500)

Abun ciki:

• Kama da 17-4PH, amma tare da tsauraran iko akan ƙazanta
• C: 14.0-15.5%
• Ni: 3.5-5.5%
• Ku: 2.5-4.5%

Maɓalli Maɓalli:

• Ingantacciyar taurin juzu'i saboda mafi kyawun microstructure
• Ingantattun kayan aikin injina a cikin sassan kauri

Amfani da Cases:

• Forgings Aerospace
• Kayan aikin sarrafa sinadarai

13-8Mo (UNS S13800)

Abun ciki:

• C: 12.25-13.25%
• Ni: 7.5-8.5%
• Mo: 2.0-2.5%

Maɓalli Maɓalli:

• Babban tauri da juriya na lalata
• Ƙarfi mai ƙarfi a ɓangarorin giciye mai kauri
• Matsakaicin sarrafa abun ciki don amfanin sararin samaniya

Amfani da Cases:

• Kayan aikin sararin samaniya
• Maɓuɓɓugan ruwa masu inganci

17-7PH (UNS S17700)

Abun ciki:

• C: 16.0-18.0%
• Ni: 6.5-7.75%
• Al: 0.75-1.50%

Maɓalli Maɓalli:

• Semi-austenitic; yana buƙatar aikin sanyi da maganin zafi
• Mafi kyawun tsari amma ƙananan juriya na lalata fiye da 17-4PH

Amfani da Cases:

• Aerospace diaphragms
• Bellows
• Springs

Custom 465 (UNS S46500)

Abun ciki:

• C: 11.0-13.0%
• Ni: 10.75-11.25%
• Ti: 1.5-2.0%
• Mo: 0.75-1.25%

Maɓalli Maɓalli:

• Babban ƙarfi (har zuwa 200 ksi tensile)
• Kyakkyawan karaya tauri
• Mafi girman farashi

Amfani da Cases:

• Kayan aikin tiyata
• Masu ɗaukar jirgin sama
• Abubuwan da aka gyara kayan saukarwa

Kwatanta Maganin Zafi

Kwatanta Juriya na Lalata

• Mafi kyau:13-8Mo da Custom 465
• Yayi kyau:17-4PH da 15-5PH
• Gaskiya:17-7PH

Lura: Babu wanda ya dace da juriyar lalata na cikakken makin austenitic kamar 316L.

Machinability da Weldability

La'akarin Kuɗi

• Mafi Tasirin Kuɗi:17-4PH
• Darajoji na Premium:13-8Mo da Custom 465
• Ma'auni:15-5PH

Kwatancen Aikace-aikace

Takaitawa

Kammalawa

Yayin da 17-4PH ya kasance tafi-zuwa PH bakin karfe don aikace-aikace na gaba ɗaya, kowane madadin PH na da fa'idodi daban-daban waɗanda ke sa ya fi dacewa da takamaiman buƙatu. Fahimtar abubuwan da ke tsakanin waɗannan allunan yana ba injiniyoyin kayan aiki da masu siye damar yanke shawara bisa ga ƙarfi, tauri, juriyar lalata, da farashi.