H13 belongs rau kub ua hauj lwm tuag hlau, uas yog tsim los ntawm kev ntxiv cov ntsiab lus alloy nyob rau hauv lub hauv paus ntawm carbon hlau.
Qib 4Cr5MoSiV1. Nws muaj kev ua tau zoo ntawm qhov nruab nrab kub (~ 600 degree), siab hardenability (hardenable nyob rau hauv huab cua), tsis tshua muaj kub kho deformation tus nqi, thiab nws cov kev ua tau zoo thiab kev pab cuam lub neej yog siab tshaj 3Cr2W8V. Nws tuaj yeem siv rau kev tuag forging rauj forging tuag, aluminium alloy tuag casting tuag, kub extrusion tuag, high-speed precision forging tuag thiab forging xovxwm tuag, thiab lwm yam.
H13 steel yog feem ntau siv thiab sawv cev kub ua haujlwm tuag hlau.
Nws cov yam ntxwv tseem ceeb yog:
(1) High hardenability thiab toughness;
(2) Cov cua sov ua kom tawg zoo heev, uas tuaj yeem ua dej txias hauv chaw ua haujlwm;
(3) Nws muaj qhov nruab nrab hnav tsis kam, thiab tseem tuaj yeem siv cov txheej txheem carburizing lossis nitriding los txhim kho nws qhov tawv tawv, tab sis me ntsis txo qhov tsis kam rau kub tawg;
(4) Vim nws cov ntsiab lus tsis tshua muaj carbon, lub peev xwm thib ob hardening hauv tempering tsis zoo;
(5) Nws muaj peev xwm tiv taus softening ntawm qhov kub thiab txias, tab sis lub hardness txo sai heev thaum qhov kev pab cuam kub siab tshaj 540 degree (1000 ℉) (uas yog, qhov ua hauj lwm kub nws yuav tiv taus yog 540 degree);
(6) Lub deformation ntawm kev kho cua sov yog me me;
(7) Nruab nrab thiab siab machinability;
(8) Nruab nrab decarburization kuj.
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 khoom zoo heev, uas yog 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 tias thaum Rm yog 1550MPa, cov ntsiab lus sulfur ntawm cov khoom txo qis ntawm 0.0{{10}}5 feem pua rau 0.003 feem pua , uas yuav ua rau muaj kev cuam tshuam toughness li ntawm 13J. NADCA 207-2003 tus qauv tau teev tseg tias cov ntsiab lus sulfur ntawm hwm H13 steel yuav tsum tsawg dua 0.005 feem pua, thaum cov hlau super yuav tsum tsawg dua 0.003 feem pua S thiab 0.015 feem pua P. Cov ntsiab lus ntawm H13 steel yog soj ntsuam hauv qab no.
Carbon: cov ntsiab lus carbon ntawm AISI H13, UNS T20813, ASTM (latest version) H13 thiab FED QQ-T-570 H13 steel yog (0.32 ~ 0.45) feem pua, uas yog qhov dav tshaj ntawm cov ntsiab lus carbon hauv tag nrho H13 steel.
Cov ntsiab lus carbon ntawm X40CrMoV5-1 thiab 1.2344 nyob rau hauv lub teb chaws Yelemees yog (0.37~{11}}.43) feem pua, nrog ib tug nqaim ntau ntawm cov ntsiab lus carbon. Cov ntsiab lus carbon ntawm X38CrMoV5-1 hauv lub teb chaws Yelemees DIN17350 yog (0.36~{18}}.42) feem pua . Cov ntsiab lus carbon ntawm SKD 61 hauv Nyiv yog (0.32 ~ {{30}}.42) feem pua . Cov ntsiab lus carbon ntawm 4Cr5MoSiV1 thiab SM 4Cr5MoSiV1 hauv GB/T 1299 thiab YB/T 094 hauv Suav teb yog (0.32~{41}}.42) feem pua thiab (0.32~0.45) feem pua , uas yog tib yam li SKD61 thiab AISI H13 feem. Tshwj xeeb, cov ntsiab lus carbon ntawm H13 steel tau teev raws li (0.37 ~ 0.42) feem pua hauv NADCA 207-90, 207-97 thiab 207-2003 cov qauv.
