AISI H12 Hlau yog dab tsi?

AISI H12 cov hlau siv ua haujlwm kub yog ib qho ntawm cov qib siv dav tshaj plaws hauv tsev neeg hlau siv, paub txog nws qhov kev sib xyaw ua ke zoo ntawm kev tawv, kev tiv taus cua sov, thiab lub zog hnav. Raws li kev lag luam txuas ntxiv xav tau cov ntaub ntawv muaj zog thiab ruaj khov dua rau kev tuag casting, forging, thiab extrusion,AISI H12tseem yog qhov kev xaiv nyiam ntawm cov engineers thiab cov neeg ua cuab yeej thoob ntiaj teb.

Hauv tsab xov xwm no, peb yuav tshawb nrhiav kom meej txog AISI H12 steel yog dab tsi, nws cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, cov txheej txheem kho cua sov, cov ntawv thov kev lag luam ib txwm muaj, thiab vim li casSAKYSTEELyog ib qho ntawm cov neeg muab khoom ntseeg siab tshaj plaws ntawm H12 cov cuab yeej ua haujlwm kub hlau.

1. Kev Taw Qhia Txog AISI H12 Hlau

AISI H12 yog cov hlau ua haujlwm kub uas muaj chromium ua ib feem ntawm H-series ntawm cov hlau, uas suav nrog cov qib zoo li H10, H11, thiab H13. Cov hlau no feem ntau yog siv rau cov cuab yeej siv uas cuam tshuam nrog kev kub siab thiab kev ntxhov siab ntawm cov tshuab.

Lub npe "H" txhais tau tias "Ua Haujlwm Kub," qhia tias AISI H12 yog tsim los kom khaws tau qhov nyuaj thiab lub zog txawm tias siv rau qhov kub siab. Qib no muaj kev tiv taus zoo heev rau kev tawg ntawm kev qaug zog thermal, oxidation, thiab softening nyob rau hauv kev raug cua sov ntev.

AISI H12 yog tus qauv raws li ntau lub npe sib npaug:

  • AISI H12 / UNS T20812

  • Werkstoff Nr. 1.2605

  • DIN X35CrW5 / X35CrMoV5-1

  • JIS SKD6

Vim nws qhov kev sib xyaw ua ke ntawm qhov nyuaj, kev tawv, thiab kev tiv taus kev kuaj xyuas cua sov, AISI H12 yog qhov zoo tagnrho rau cov cuab yeej ua haujlwm hnyav, cov pwm kub, thiab cov pwm extrusion.

2. Cov Tshuaj Lom Zem ntawm AISI H12

Kev ua tau zoo ntawm AISI H12 hlau feem ntau yog txhais los ntawm nws cov tshuaj lom neeg sib npaug zoo. Qhov muaj chromium, molybdenum, thiab tungsten muab lub zog kub siab thiab tiv taus oxidation, thaum carbon ua kom muaj zog thiab hnav tsis kam.

Khoom Cov ntsiab lus (%)
Cov pa roj carbon (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
Silicon (Si) 0.80 – 1.20
Manganese (Mn) 0.25 – 0.50
Nickel (Ni) ≤ 0.3
Sulfur (S) + Phosphorus (P) ≤ 0.03

Cov khoom no muab cov qauv microstructure zoo uas txhawb nqa ob qho tib si thermal thiab mechanical stability. Cov ntsiab lus chromium ua rau muaj kev tiv thaiv corrosion thiab kev khaws cia hardness, thaum tungsten thiab molybdenum ua rau cov hlau muaj zog ntawm qhov kub siab.

3. Cov Khoom Siv Kho Tshuab ntawm AISI H12

Kev ua tau zoo ntawm AISI H12 ua rau nws tsim nyog rau kev ua haujlwm uas muaj kev kub siab thiab kub. Cov khoom siv kho tshuab ib txwm muaj tom qab kev kho cua sov yog raws li nram no:

Vaj tse Tus nqi ib txwm muaj
Kev Nyuaj Siab (Annealed) ≤ 229 HB
Kev Nyuaj Siab (Tawv thiab Tempered) 44 – 52 HRC
Lub zog tensile 1500 – 1900 MPa
Lub Zog Tawm 1200 MPa (kwv yees li)
Kev ntev 10 – 15%
Kev Cuam Tshuam Toughness Zoo heev thaum kub siab

AISI H12 muab lub zog kub siab nrog rau kev tawv, uas txo qhov kev pheej hmoo ntawm kev tawg thaum lub sijhawm die-casting lossis forging. Cov khoom no tso cai rau cov hlau ua tau zoo hauv qab kev hloov pauv thermal rov ua dua.

4. Kev Kho Mob Kub

Kev kho cua sov kom zoo yog qhov tseem ceeb rau kev ua kom zoo dua ntawm AISI H12. Cov txheej txheem kho cua sov tus qauv suav nrog cov kauj ruam hauv qab no:

Kev ua kom sov

  • Kub kom txog 850-900 ° C.

  • Tuav rau 2-4 teev nyob ntawm seb qhov loj ntawm daim.

  • Txias qeeb qeeb hauv lub cub tawg kom txog 600 ° C, tom qab ntawd hauv huab cua.

  • Qhov Tshwm Sim: Cov qauv mos nrog qhov nyuaj ≤ 229 HB rau kev ua haujlwm.

Ua kom sov ua ntej

  • Maj mam ua kom sov maj mam ua ob theem: thawj zaug mus rau 450–500°C, tom qab ntawd mus rau 850–900°C.

Kev ua kom tawv

  • Austenitize ntawm 1000–1050 ° C.

  • Tuav kom txaus (20-30 feeb).

  • Tua hluav taws hauv huab cua, roj, lossis dej ntsev ntawm 550 ° C.

  • Qhov Tshwm Sim: Qhov nyuaj txog li 52 HRC.

Kev ua kom sov

  • Temper tam sim ntawd tom qab hardening.

  • Qhov kub thiab txias ib txwm muaj: 500–650 ° C.

  • Ob chav tempering yog pom zoo kom txhim kho toughness.

Tom qab tempering, qhov nyuaj kawg tuaj yeem tswj tau raws li daim ntawv thov xav tau - feem ntau ntawm44 txog 52 HRC.

5. Cov txiaj ntsig ntawm AISI H12 Hlau

AISI H12 muaj nqis heev rau nws cov khoom zoo sib npaug. Hauv qab no yog cov txiaj ntsig tseem ceeb uas ua rau nws yog cov khoom siv txhim khu kev qha rau cov cuab yeej siv hauv kev lag luam:

  1. Kev Tiv Thaiv Kev Nyuaj Siab Siab
    Tiv taus kev tawg thaum lub sijhawm ua kom sov thiab txias dua.

  2. Kev Ruaj Ntseg Zoo Kawg Nkaus
    Tswj tau lub zog cuam tshuam txawm tias nyob hauv qhov kub thiab txias siab.

  3. Kev Ruaj Ntseg Zoo
    Qhov tsawg kawg nkaus distortion thaum lub sij hawm kho cua sov ua kom muaj kev ua haujlwm tseeb hauv cov cuab yeej.

  4. Kev Tiv Thaiv Kev Mos Mos
    Khaws cov hardness ntawm qhov kub siab tshaj plaws txog li 600 ° C.

  5. Kev Tiv Thaiv Zoo
    Haum rau cov chaw ua haujlwm abrasive xws li extrusion dies thiab forging hammers.

  6. Kev Siv Tau Thiab Kev Ua Kom Tiav
    AISI H12 muaj kev siv tshuab nruab nrab thiab tuaj yeem ua tiav qhov chaw zoo.

Cov yam ntxwv no ua rau AISI H12 yog ib qho ntawm cov kev xaiv pheej yig tshaj plaws rau cov cuab yeej ua haujlwm kub hnyav.

6. Kev Siv Hauv Kev Lag Luam

AISI H12 siv rau ntau yam kev siv hauv kev lag luam uas xav tau kev tiv taus kub thiab kev tawv. Cov ntawv thov feem ntau suav nrog:

1. Cov Cuab Yeej Casting Tuag

  • Kev tuag casting siab

  • Cov ntawv ntxig tuag

  • Core pins thiab tes tsho

2. Forging Tuag

  • Tso cov tuag forge

  • Kub nias tuag

  • Cov cuab yeej ua rau chim siab

3. Cov Tuag Extrusion

  • Aluminium extrusion tuag

  • Cov cuab yeej ua los ntawm tooj liab thiab magnesium

4. Cov pwm yas thiab cov neeg khiav kub

  • Cov pwm yas txhaj tshuaj

  • Cov txheej txheem khiav rau cov yas kub siab

5. Cov Cheebtsam Aerospace thiab Automotive

  • Cov hniav turbine thiab cov khoom siv nozzle

  • Cov rooj zaum valve ntawm lub cav thiab cov ntxig cua sov siab

6. Cov Hniav Kub thiab Cov Punches

  • Cov hniav txiav rau cov khoom siv kub siab

  • Cov cuab yeej tho rau kev ua cov hlau kub

Qhov siv tau dav dav ntawm AISI H12 thoob plaws ntau yam lag luam qhia txog nws qhov kev ntseeg tau ntawm kev ua tau zoo thiab lub neej ntev.

7. Kev Sib Piv: AISI H12 vs AISI H13 vs H11

Thaum AISI H13 thiab H11 kuj yog cov hlau ua haujlwm kub nrov, H12 muab qhov sib npaug ntawm lub zog thiab kev tawv.

Vaj tse AISI H11 AISI H12 AISI H13
Cov pa roj carbon (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 —
Lub zog kub Zoo Zoo heev Zoo heev
Kev qaug zog ntawm lub cev Nruab nrab Zoo heev Zoo heev
Kev Tiv Thaiv Hnav Nruab nrab Siab Siab heev

AISI H12muab lub zog kub zoo dua thiab tiv taus kev tawg piv rau H11, thaum tswj tau qhov tawv zoo dua li H13 hauv qee qhov kev siv. Qhov no ua rau nws tsim nyog rau cov pwm hnyav thiab cov pwm extrusion.

8. Kev Xav Txog Kev Siv Tshuab Thiab Kev Vuam

Kev siv tshuab

AISI H12 yuav tsum tau ua kom tiav hauv nws qhov xwm txheej annealed. Nws qhov kev ntsuas kev ua haujlwm yog kwv yees li 75% ntawm AISI 4140 hlau. Kev siv cov cuab yeej carbide thiab tswj cov xwm txheej txias kom zoo yog qhov tseem ceeb rau lub neej cuab yeej ntev dua.

Kev vuam

Kev vuam ua tau los ntawm kev ua kom sov ua ntej (250–350°C) thiab kev kho tom qab vuam kom tsis txhob tawg. Cov ntaub ntawv sau uas pom zoo kom siv yog cov khoom sib xyaw zoo ib yam li cov hlau puag.

Kev Kho Mob Nto

Yog xav kom siv tau ntev dua, kev kho saum npoo xws li nitriding lossis PVD txheej tuaj yeem siv tau. Cov nplaim nitrided AISI H12 qhia tau tias muaj kev tawv zoo dua thiab tiv taus kev hnav yam tsis poob qhov tawv ntawm lub plawv.

9. Cov Ntawv Muab Khoom thiab Qhov Loj

SAKYSTEELmuab AISI H12 cov cuab yeej ua haujlwm kub hlau hauv ntau hom thiab qhov ntau thiab tsawg, suav nrog:

  • Cov tuav puag ncig

  • Cov tuav tiaj tiaj

  • Cov phaj thiab cov blocks

  • Cov hlau forged

  • Cov pwm ua ntej tshuab

Tag nrho cov ntaub ntawv yog muab nrogEN 10204 3.1 Mill Test Certificate, lees paub cov tshuaj lom neeg muaj pes tsawg leeg thiab kev ua haujlwm ntawm lub tshuab. Kev txiav raws li qhov xav tau, kev ua haujlwm kom raug, thiab kev kho cua sov kuj muaj raws li cov lus qhia ntawm tus neeg siv khoom.

10. Kev Pov Hwm Zoo thiab Cov Qauv

At SAKYSTEEL, tag nrho cov ntaub ntawv AISI H12 yog tsim tawm raws li cov qauv thoob ntiaj teb xws li:

  • ASTM A681 - Cov Hlau Cuab Yeej Alloy

  • DIN EN ISO 4957 - Cov Hlau Siv

  • JIS G4404 - Cov Hlau Siv Rau Cov Cuab Yeej Alloy

Txhua pawg khoom raug tswj xyuas zoo nruj, suav nrog kev sim ultrasonic, kev tshuaj xyuas qhov nyuaj, thiab kev tshuaj xyuas metallographic kom ntseeg tau tias muaj kev ua haujlwm tsis muaj qhov tsis zoo.

11. Cov Lus Qhia rau Lub Neej Siv Tau Zoo Tshaj Plaws

Yuav kom ua tiav lub neej siv tau zoo tshaj plaws los ntawm cov khoom AISI H12:

  1. Siv cov preheating kom zoo ua ntej ua haujlwm.

  2. Tsis txhob hloov pauv kub ntau dhau.

  3. Ua ob chav tempering rau kev txhim kho toughness.

  4. Siv nitriding rau kev ua kom tawv ntawm qhov chaw ntev dua.

  5. Tswj kom muaj lubrication tas li hauv cov ntawv thov kub.

Ua raws li cov lus qhia no ua kom muaj kev pabcuam ntev tshaj plaws, txo lub sijhawm tsis ua haujlwm, thiab txuag nqi rau cov neeg siv khoom hauv kev lag luam.

12. Xaus Lus

AISI H12 yog cov hlau ua haujlwm kub ua haujlwm tau zoo uas muab kev tawv zoo heev, tiv taus cua sov, thiab ruaj khov hauv qhov chaw ua haujlwm hnyav. Nws cov khoom sib xyaw ua ke thiab kev tiv taus cua sov zoo ua rau nws yog cov khoom siv nyiam rau kev forging, die casting, thiab extrusion tooling.

Nrog xyoo ntawm kev tsim khoom thiab kev xa tawm,SAKYSTEELmuab cov khoom siv hlau AISI H12 zoo uas ua tau raws li cov qauv thoob ntiaj teb thiab cov kev xav tau tshwj xeeb ntawm cov neeg siv khoom. Txawm hais tias koj xav tau cov blocks forged, precision-cut plates, lossis cov bars npaj txhij-rau-tshuab,SAKYSTEELua kom ntseeg tau zoo, xa khoom raws sijhawm, thiab kev txhawb nqa kev tshaj lij.

Lub sijhawm tshaj tawm: Lub Kaum Hli-28-2025