Kodi AISI H12 Steel ndi chiyani?

Chitsulo cha AISI H12 chotentha ndi chimodzi mwa zinthu zomwe zimagwiritsidwa ntchito kwambiri m'gulu la zida zachitsulo, chomwe chimadziwika chifukwa cha kulimba kwake, kukana kutentha, komanso mphamvu yotha kutha. Pamene mafakitale akupitilizabe kufunafuna zipangizo zolimba komanso zolimba zopangira zinthu zofewa, zopangira, ndi zotulutsa,AISI H12ikadali chisankho chomwe chimakondedwa kwambiri pakati pa mainjiniya ndi opanga zida padziko lonse lapansi.

M'nkhaniyi, tifufuza mwatsatanetsatane kuti chitsulo cha AISI H12 ndi chiyani, kapangidwe kake ka mankhwala, mawonekedwe ake a makina, njira yochizira kutentha, ntchito zamakampani, ndi chifukwa chake.SAKYSTEELndi m'modzi mwa ogulitsa odalirika kwambiri a zitsulo zotentha za H12.

1. Chiyambi cha Chitsulo cha AISI H12

AISI H12 ndi chitsulo chotentha chopangidwa ndi chromium chomwe chili m'gulu la zitsulo zamtundu wa H, zomwe zimaphatikizapo mitundu ngati H10, H11, ndi H13. Zitsulozi zimagwiritsidwa ntchito makamaka pakugwiritsa ntchito zida zomwe zimaphatikizapo kutentha kwambiri komanso kupsinjika kwa makina.

Dzina lakuti “H” limatanthauza “Hot Work,” zomwe zikusonyeza kuti AISI H12 idapangidwa kuti isunge kuuma ndi mphamvu ngakhale ikagwiritsidwa ntchito kutentha kwambiri. Mtundu uwu umapereka kukana bwino kutentha, kusungunuka, ndi kufewa pakatentha kwa nthawi yayitali.

AISI H12 imayendetsedwa ndi mayina angapo ofanana:

  • AISI H12 / UNS T20812

  • Werkstoff Nambala 1.2605

  • DIN X35CrW5 / X35CrMoV5-1

  • JIS SKD6

Chifukwa cha kuphatikiza kwake kuuma, kulimba, komanso kukana kutentha, AISI H12 ndi yabwino kwambiri pazida zolemera, ma hot dies, ndi ma extrusion molds.

2. Kapangidwe ka Mankhwala a AISI H12

Kugwira ntchito kwa chitsulo cha AISI H12 kumadziwika kwambiri ndi kapangidwe kake ka mankhwala koyenera bwino. Kupezeka kwa chromium, molybdenum, ndi tungsten kumapereka mphamvu yotentha kwambiri komanso kukana okosijeni, pomwe kaboni imatsimikizira kulimba ndi kukana kuwonongeka.

Chinthu Zomwe zili mkati (%)
Kaboni (C) 0.35 – 0.45
Chromium (Cr) 4.75 – 5.50
Molybdenum (Mo) 1.10 – 1.75
Tungsten (W) 1.00 – 1.75
Vanadium (V) 0.20 – 0.60
Silikoni (Si) 0.80 – 1.20
Manganese (Mn) 0.25 – 0.50
Nikeli (Ni) ≤ 0.3
Sulfure (S) + Phosphorus (P) ≤ 0.03

Kapangidwe kameneka kamapereka kapangidwe kabwino kamene kamathandizira kukhazikika kwa kutentha ndi makina. Kuchuluka kwa chromium kumawonjezera kukana dzimbiri komanso kusunga kuuma, pomwe tungsten ndi molybdenum zimalimbitsa chitsulo pa kutentha kwakukulu.

3. Kapangidwe ka makina a AISI H12

Kagwiridwe ka ntchito ka AISI H12 kamathandiza kuti ikhale yoyenera kugwiritsidwa ntchito pa nthawi ya kuthamanga kwa magazi ndi kutentha kwambiri. Kapangidwe ka makina kamene kamagwiritsidwa ntchito potentha ndi motere:

Katundu Mtengo Wamba
Kuuma (Kutsekedwa) ≤ 229 HB
Kuuma (Kuuma & Kukhazikika) 44 - 52 HRC
Kulimba kwamakokedwe 1500 – 1900 MPa
Mphamvu Yopereka 1200 MPa (pafupifupi)
Kutalikitsa 10 - 15%
Kulimba kwa Impact Zabwino kwambiri kutentha kwambiri

AISI H12 imaphatikiza mphamvu yotentha kwambiri ndi kulimba, zomwe zimachepetsa chiopsezo cha ming'alu panthawi yopangira kapena kupanga. Seti iyi yazinthu imalola chitsulo kugwira ntchito bwino poyendetsa kutentha mobwerezabwereza.

4. Njira Yothandizira Kutentha

Kuchiza kutentha koyenera n'kofunika kwambiri kuti AISI H12 igwire bwino ntchito. Njira yodziwika bwino yochizira kutentha imaphatikizapo izi:

Kuphimba

  • Tenthetsani mpaka 850–900°C.

  • Dikirani kwa maola 2-4 kutengera kukula kwa gawo.

  • Zizireni pang'onopang'ono mu uvuni mpaka 600°C, kenako mumlengalenga.

  • Zotsatira: Kapangidwe kofewa kolimba ≤ 229 HB kopangira makina.

Kutentha

  • Yatsani pang'onopang'ono m'magawo awiri: choyamba mpaka 450–500°C, kenako mpaka 850–900°C.

Kuuma

  • Limbikitsani kutentha pa 1000–1050°C.

  • Dikirani kwa nthawi yokwanira (mphindi 20-30).

  • Zimitsani mu bafa la mpweya, mafuta, kapena mchere pa 550°C.

  • Zotsatira: Kulimba mpaka 52 HRC.

Kuchepetsa kutentha

  • Tenthetsani nthawi yomweyo mutatha kuuma.

  • Kutentha kwachizolowezi: 500–650°C.

  • Kutenthetsa kawiri kumalimbikitsidwa kuti kukhale kolimba.

Pambuyo potenthetsa, kuuma komaliza kumatha kulamulidwa malinga ndi momwe mukufunira — nthawi zambiri pakati pa44 mpaka 52 HRC.

5. Ubwino wa Chitsulo cha AISI H12

AISI H12 ndi yamtengo wapatali kwambiri chifukwa cha makhalidwe ake abwino. Nazi ubwino waukulu womwe umapangitsa kuti ikhale yodalirika pakugwiritsa ntchito zida zamafakitale:

  1. Kukana Kutopa Kwambiri
    Imalimbana ndi ming'alu ikachitika nthawi zonse ikatenthedwa ndi kuzizira.

  2. Kulimba Kwambiri
    Imasunga mphamvu yogwira ngakhale ikakhudzidwa kwambiri komanso kutentha kwambiri.

  3. Kukhazikika Kwabwino Kwambiri
    Kusokonezeka kochepa panthawi yotenthetsera kumatsimikizira kulondola kwa zida.

  4. Kukana Kufewa
    Imasunga kuuma kwake kutentha kokwera mpaka 600°C.

  5. Kukana Kwabwino Kwa Kuvala
    Yoyenera malo okhwimitsa zinthu monga ma extrusion dies ndi ma forging hammer.

  6. Kutha Kukonza ndi Kupukuta
    AISI H12 imapereka makina osavuta kugwiritsa ntchito ndipo imatha kupangidwa bwino kwambiri.

Zinthu zimenezi zimapangitsa AISI H12 kukhala imodzi mwa njira zotsika mtengo kwambiri zogwiritsira ntchito zida zotentha kwambiri.

6. Ntchito Zamakampani

AISI H12 imagwiritsidwa ntchito m'mafakitale osiyanasiyana omwe amafunikira kukana kutentha kwambiri komanso kulimba. Ntchito zodziwika bwino ndi izi:

1. Zida Zoponyera Ma Die

  • Kuthamanga kufa kuponyera kufa

  • Zoyikapo za die

  • Mapini ndi manja apakati

2. Mafayi Opangira

  • Ma drop forge dies

  • Makina osindikizira otentha amafa

  • Zida zokhumudwitsa

3. Mafa Otulutsa

  • Aluminium extrusion ifa

  • Zipangizo zopangira die za mkuwa ndi magnesium

4. Mapulasitiki ndi Zotenthetsera Zotentha

  • Pulasitiki jekeseni nkhungu cores

  • Makina oyendetsera mapulasitiki otentha kwambiri

5. Zigawo za Ndege ndi Magalimoto

  • Masamba a Turbine ndi zida za nozzle

  • Zipando za ma valve a injini ndi zoyikapo kutentha kwambiri

6. Masamba ndi Ziphuphu Zotentha

  • Masamba odulira zinthu zotentha kwambiri

  • Zida zoboola zitsulo zotentha

Kugwiritsa ntchito bwino kwa AISI H12 m'mafakitale osiyanasiyana kukuwonetsa kudalirika kwake pakugwira ntchito komanso nthawi yayitali yogwirira ntchito.

7. Kuyerekeza: AISI H12 vs AISI H13 vs H11

Ngakhale kuti AISI H13 ndi H11 ndi zitsulo zodziwika bwino zotentha, H12 imapereka mphamvu ndi kulimba kosiyana.

Katundu AISI H11 AISI H12 AISI H13
Kaboni (C) 0.35 0.40 0.40
Chromium (Cr) 5.25 5.25 5.25
Molybdenum (Mo) 1.25 1.25 1.35
Tungsten (W) — 1.50 —
Mphamvu Yotentha Zabwino Zabwino kwambiri Zabwino kwambiri
Kutopa Kwambiri Wocheperako Zabwino kwambiri Zabwino kwambiri
Kuvala kukana Wocheperako Pamwamba Pamwamba Kwambiri

AISI H12imapereka mphamvu yotentha kwambiri komanso yolimba polimbana ndi ming'alu poyerekeza ndi H11, pomwe imakhalabe yolimba kuposa H13 pazinthu zina. Izi zimapangitsa kuti ikhale yoyenera kwambiri pamakina odulira zinthu zolemera komanso zotulutsa zinthu.

8. Zofunika Kuganizira pa Machining ndi Welding

Kukonza Machining

AISI H12 iyenera kupangidwa ndi makina ngati momwe imagwiritsidwira ntchito. Kuchuluka kwa makina ake ndi pafupifupi 75% ya chitsulo cha AISI 4140. Kugwiritsa ntchito zida za carbide ndi kusunga malo ozizira bwino ndikofunikira kuti zida zikhale ndi moyo wautali.

kuwotcherera

Kuwotcherera ndikotheka pogwiritsa ntchito kutentha koyambirira (250–350°C) ndi kutentha pambuyo pa kuwotcherera kuti zisasweke. Zipangizo zodzaza zomwe zimalimbikitsidwa ndizofanana ndi chitsulo choyambira.

Chithandizo cha Pamwamba

Kuti ntchito ikhale yayitali, mankhwala ochizira pamwamba monga nitriding kapena PVD coating angagwiritsidwe ntchito. Malo okhala ndi nitrided AISI H12 amawonetsa kuuma bwino komanso kukana kuwonongeka popanda kutaya kulimba kwapakati.

9. Mafomu ndi Makulidwe Ogulira

SAKYSTEELimapereka chitsulo cha AISI H12 chogwirira ntchito m'njira zosiyanasiyana komanso kukula kwake, kuphatikizapo:

  • Mipiringidzo yozungulira

  • Mipiringidzo yathyathyathya

  • Mbale ndi mabuloko

  • Ma billet opangidwa

  • Mafayi opangidwa kale

Zipangizo zonse zimaperekedwa ndiEN 10204 3.1 Ziphaso Zoyeserera za Mill, kutsimikizira kapangidwe ka mankhwala ndi magwiridwe antchito a makina. Kudula mwamakonda, kukonza molondola, ndi ntchito zochizira kutentha zimapezekanso malinga ndi zomwe kasitomala akufuna.

10. Chitsimikizo cha Ubwino ndi Miyezo

At SAKYSTEEL, zipangizo zonse za AISI H12 zimapangidwa motsatira miyezo yapadziko lonse lapansi monga:

  • ASTM A681 - Chitsulo cha Zida

  • DIN EN ISO 4957 - Zitsulo za Zida

  • JIS G4404 - Zitsulo za Zida Zopangira Alloy

Gulu lililonse limayendetsedwa mosamala kwambiri, kuphatikizapo kuyesa kwa ultrasound, kuyang'anira kuuma, ndi kusanthula kwa metallographic kuti zitsimikizire kuti palibe zolakwika.

11. Malangizo a Moyo Wabwino wa Chida

Kuti mupeze moyo wabwino kwambiri wa zida kuchokera ku zigawo za AISI H12:

  1. Gwiritsani ntchito kutentha koyenera musanagwiritse ntchito.

  2. Pewani kusinthasintha kwakukulu kwa kutentha.

  3. Chitani zinthu ziwiri zotenthetsera kuti mukhale olimba.

  4. Ikani nitriding kuti pakhale kuuma kwakutali pamwamba.

  5. Sungani mafuta nthawi zonse mukamagwiritsa ntchito mafuta otentha.

Kutsatira malangizo awa kumatsimikizira kuti ntchitoyo imatenga nthawi yayitali, kuchepetsa nthawi yogwira ntchito, komanso kusunga ndalama kwa ogwiritsa ntchito mafakitale.

12. Mapeto

AISI H12 ndi chitsulo chogwira ntchito bwino kwambiri chomwe chimapereka kulimba kwapadera, kukana kutentha, komanso kukhazikika m'malo ovuta kwambiri m'mafakitale. Kapangidwe kake koyenera ka alloy komanso kukana kutentha kwambiri kumapangitsa kuti ikhale chinthu chogwiritsidwa ntchito kwambiri popanga zinthu zopangira, zopangira zinthu zofewa, komanso zopangira zinthu zotulutsira zinthu.

Ndi zaka zambiri zogwira ntchito yopanga ndi kutumiza kunja,SAKYSTEELimapereka zinthu zapamwamba kwambiri zachitsulo cha AISI H12 zomwe zimakwaniritsa miyezo yapadziko lonse lapansi komanso zofunikira kwa makasitomala. Kaya mukufuna mabuloko opangidwa, mbale zodulidwa bwino, kapena mipiringidzo yokonzeka kugwiritsidwa ntchito pamakina,SAKYSTEELzimatsimikizira khalidwe lodalirika, kutumiza nthawi yake, komanso chithandizo chaukadaulo chaukadaulo.

Nthawi yotumizira: Okutobala-28-2025