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

Nws yog kev taw qhia ntawm H13 cua quench hardening kub ua haujlwm tuag hlau los ntawm Tebchaws Meskas.Nws cov khoom thiab kev siv yeej ib txwm zoo ib yam li cov hlau 4Cr5MoSiV, tab sis vim nws cov ntsiab lus ntau dua vanadium, nws qhov nruab nrab kub (600 degrees) kev ua tau zoo dua 4Cr5MoSiV hlau.Nws yog tus sawv cev qib steel nrog ntau yam kev siv hauv kev ua haujlwm kub tuag steel.
2. Nta
Electroslag remelted steel, cov hlau muaj siab hardenability thiab thermal tawg kuj, cov hlau muaj cov ntsiab lus ntau dua ntawm carbon thiab vanadium, zoo hnav tsis kam, kuj tsis muaj zog toughness, thiab zoo tshav kub kuj.Thaum kub siab dua, nws muaj zog dua thiab hardness, siab hnav tsis kam thiab toughness, zoo heev txhua yam khoom thiab siab tempering kuj stability.
3. Cov tshuaj muaj pes tsawg leeg ntawm cov hlau
H13 steel yog C-Cr-Mo-Si-V steel, uas yog dav siv nyob rau hauv lub ntiaj teb no.Nyob rau tib lub sijhawm, ntau tus kws tshawb fawb los ntawm ntau lub tebchaws tau tshawb fawb txog nws thiab tab tom tshawb nrhiav kev txhim kho cov tshuaj muaj pes tsawg leeg.Hlau yog dav siv thiab muaj cov yam ntxwv zoo heev, feem ntau txiav txim siab los ntawm cov tshuaj muaj pes tsawg leeg ntawm cov hlau.Ntawm chav kawm, cov impurity ntsiab nyob rau hauv cov hlau yuav tsum tau txo.Qee cov ntaub ntawv qhia tau hais tias thaum Rm yog 1550MPa, cov ntsiab lus ntawm cov sulfur ntawm cov khoom raug txo los ntawm 0.005% mus rau 0.003%, uas yuav ua rau kom muaj zog toughness li ntawm 13J.Pom tseeb, NADCA 207-2003 tus qauv tau teev tseg tias cov ntsiab lus ntawm sulfur ntawm hwm H13 steel yuav tsum tsawg dua 0.005%, thaum cov ntsiab lus ntawm sulfur ntawm superior yuav tsum tsawg dua 0.003% S thiab 0.015% P.Cov muaj pes tsawg leeg ntawm H13 steel yog soj ntsuam hauv qab no.

Cov pa roj carbon: American AISI H13, UNS T20813, ASTM (qhov tseeb version) H13 thiab FED QQ-T-570 H13 steel muaj cov ntsiab lus carbon ntawm (0.32 ~ 0.45)%, uas yog cov ntsiab lus carbon feem ntau ntawm txhua tus.H13 hlau.Dav.Cov ntsiab lus carbon ntawm German X40CrMoV5-1 thiab 1.2344 yog (0.37 ~ 0.43)%, thiab cov pa roj carbon ntau 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 yog tib yam li SKD61 thiab AISI H13, feem.Tshwj xeeb, nws yuav tsum tau taw qhia tias cov ntsiab lus carbon ntawm H13 hlau nyob rau hauv North American Die Casting Association NADCA 207-90, 207-97 thiab 207-2003 cov qauv tau teev tseg raws li (0.37 ~ 0.42)%.

H13 steel uas muaj 5% Cr yuav tsum muaj siab toughness, yog li nws cov ntsiab lus C yuav tsum tau khaws cia nyob rau theem uas tsim ib tug me me ntawm alloy C compounds.Woodyatt thiab Krauss tau taw qhia tias ntawm Fe-Cr-C ternary theem daim duab ntawm 870 ℃, txoj hauj lwm ntawm H13 steel yog zoo dua nyob rau hauv kev sib tshuam ntawm austenite A thiab (A + M3C + M7C3) peb-theem cheeb tsam.Cov ntsiab lus C sib raug yog kwv yees li 0.4%.Daim duab kuj tau cim qhov nce ntawm C lossis Cr kom nce qhov nyiaj ntawm M7C3, thiab A2 thiab D2 steels nrog ntau dua hnav tsis kam rau kev sib piv.Nws tseem yog ib qho tseem ceeb kom tswj tau cov ntsiab lus C uas tsis tshua muaj los ua kom Ms taw tes ntawm cov hlau siv qhov kub thiab txias (Ms ntawm H13 steel feem ntau tau piav qhia li 340 ℃), kom cov hlau tuaj yeem quenched rau hauv chav tsev kub.Tau txais cov alloy C compound qauv feem ntau yog tsim los ntawm martensite ntxiv rau ib qho me me ntawm cov seem A thiab cov seem seem faib, thiab tau txais cov qauv tempered martensite tom qab tempering.Tsis txhob hloov pauv ntau dhau ntawm austenite ntawm qhov ua haujlwm kub kom cuam tshuam rau kev ua haujlwm ua haujlwm lossis deformation ntawm workpiece.Cov me me ntawm cov austenite khaws cia yuav tsum tau hloov pauv tag nrho hauv ob lossis peb txheej txheem tempering tom qab quenching.Los ntawm txoj kev, nws tau taw qhia ntawm no tias cov qauv martensite tau tom qab quenching ntawm H13 steel yog lath M + me me ntawm flake M + ib qho me me ntawm residual A. Cov hlau zoo heev carbides precipitated ntawm lath M tom qab tempering.Cov kws tshawb fawb hauv tsev kuj tau ua qee yam haujlwm