1. Quav kom hloov kho lub hom phiaj ntawm kab lus no
H13 hlau tuagyog siv los tsim cov forging tuag nrog kev cuam tshuam siab, kub extrusion tuag, precision forging tuag; tuag-casting tuag rau txhuas, tooj liab thiab lawv cov alloys.

Nws yog kev qhia txog H13 cua quench hardening kub ua haujlwm hlau los ntawm Tebchaws Meskas. Nws cov khoom thiab kev siv yog zoo ib yam li cov ntawm 4Cr5MoSiV hlau, tab sis vim nws cov ntsiab lus vanadium siab dua, nws qhov kub nruab nrab (600 degrees) kev ua tau zoo dua li 4Cr5MoSiV hlau. Nws yog ib qib hlau sawv cev nrog ntau yam kev siv hauv kub ua haujlwm hlau.
2. Cov yam ntxwv
Cov hlau uas tau yaj dua los ntawm electroslag, cov hlau no muaj zog thiab tiv taus kev tawg ntawm cua sov, cov hlau no muaj cov pa roj carbon thiab vanadium ntau dua, tiv taus kev hnav zoo, muaj zog tsis zoo, thiab tiv taus cua sov zoo. Thaum kub dua, nws muaj zog thiab tawv dua, tiv taus kev hnav thiab tawv zoo, muaj cov khoom siv kho tshuab zoo heev thiab ruaj khov thaum kub.
3. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm hlau
H13 hlau yog C-Cr-Mo-Si-V hlau, uas siv dav hauv ntiaj teb. Tib lub sijhawm, ntau tus kws tshawb fawb los ntawm ntau lub tebchaws tau ua kev tshawb fawb ntau yam txog nws thiab tab tom tshawb nrhiav kev txhim kho cov tshuaj lom neeg. Hlau siv dav thiab muaj cov yam ntxwv zoo heev, feem ntau yog txiav txim siab los ntawm cov tshuaj lom neeg ntawm hlau. Tau kawg, cov khoom tsis huv hauv hlau yuav tsum tau txo qis. Qee cov ntaub ntawv qhia tias thaum Rm yog 1550MPa, cov ntsiab lus sulfur ntawm cov khoom siv raug txo los ntawm 0.005% mus rau 0.003%, uas yuav ua rau muaj kev cuam tshuam ntau ntxiv los ntawm kwv yees li 13J. Nws yog qhov tseeb, NADCA 207-2003 tus qauv hais tias cov ntsiab lus sulfur ntawm cov hlau H13 zoo tshaj plaws yuav tsum tsawg dua 0.005%, thaum cov ntsiab lus sulfur ntawm superior yuav tsum tsawg dua 0.003% S thiab 0.015% P. Cov khoom xyaw ntawm H13 hlau raug tshuaj xyuas hauv qab no.

Cov pa roj carbon: American AISI H13, UNS T20813, ASTM (qhov tseeb version) H13 thiab FED QQ-T-570 H13 hlau muaj cov pa roj carbon ntawm (0.32 ~ 0.45)%, uas yog cov pa roj carbon ntau tshaj plaws ntawm txhua yamCov hlau H13. Dav. Cov ntsiab lus carbon ntawm German X40CrMoV5-1 thiab 1.2344 yog (0.37 ~ 0.43)%, thiab cov ntsiab lus carbon yog nqaim. Hauv German DIN17350, cov ntsiab lus carbon ntawm X38CrMoV5-1 yog (0.36 ~ 0.42)%. Cov ntsiab lus carbon ntawm SKD 61 hauv Nyiv yog (0.32 ~ 0.42)%. Cov ntsiab lus carbon ntawm 4Cr5MoSiV1 thiab SM 4Cr5MoSiV1 hauv kuv lub teb chaws GB / T 1299 thiab YB / T 094 yog (0.32 ~ 0.42)% thiab (0.32 ~ 0.45)%, uas zoo ib yam li SKD61 thiab AISI H13, feem. Tshwj xeeb, nws yuav tsum tau taw qhia tias cov ntsiab lus carbon ntawm H13 hlau hauv North American Die Casting Association NADCA 207-90, 207-97 thiab 207-2003 cov qauv tau teev tseg ua (0.37 ~ 0.42)%.

Cov hlau H13 uas muaj 5% Cr yuav tsum muaj lub zog siab, yog li nws cov ntsiab lus C yuav tsum tau tswj hwm ntawm qib uas tsim cov khoom sib xyaw C me me. Woodyatt thiab Krauss tau taw qhia tias ntawm daim duab Fe-Cr-C ternary theem ntawm 870 ℃, qhov chaw ntawm H13 hlau zoo dua ntawm qhov sib tshuam ntawm austenite A thiab (A + M3C + M7C3) peb-theem cheeb tsam. Cov ntsiab lus C sib xws yog li 0.4%. Daim duab kuj tau cim qhov nce ntawm C lossis Cr kom nce qhov ntau ntawm M7C3, thiab cov hlau A2 thiab D2 nrog kev tiv thaiv hnav siab dua rau kev sib piv. Nws tseem ceeb heev kom tswj cov ntsiab lus C qis kom ua rau Ms taw tes ntawm cov hlau coj qib kub siab (Ms ntawm H13 hlau feem ntau piav qhia tias yog 340 ℃), yog li cov hlau tuaj yeem raug quenched rau chav tsev kub. Tau txais cov qauv sib xyaw ua ke C feem ntau yog tsim los ntawm martensite ntxiv rau me me ntawm cov seem A thiab cov seem sib npaug, thiab tau txais cov qauv martensite sib npaug tom qab tempering. Tsis txhob hloov pauv ntau dhau ntawm qhov kub ua haujlwm kom cuam tshuam rau kev ua haujlwm lossis kev hloov pauv ntawm cov khoom ua haujlwm. Cov me me ntawm cov austenite khaws cia no yuav tsum tau hloov pauv tag nrho hauv ob lossis peb txoj kev tempering tom qab quenching. Los ntawm txoj kev, nws tau taw qhia ntawm no tias cov qauv martensite tau txais tom qab quenching ntawm H13 hlau yog lath M + me me ntawm flake M + me me ntawm cov seem A. Cov carbides zoo heev precipitated ntawm lath M tom qab tempering. Cov kws tshawb fawb hauv tsev kuj tau ua qee yam haujlwm