Lub nraub qaum yob yog yob uas txhawb nqa kev ua haujlwmyobthiab yog qhov loj tshaj plaws thiab hnyav tshaj yob siv nyob rau hauv dov mills. Covyobtuaj yeem txhawb nruab nrabyobrau lub hom phiaj ntawm kev zam kom tsis txhob deflection ntawm kev ua haujlwm yob thiab cuam tshuam rau cov txiaj ntsig thiab qhov zoo ntawm cov phaj thiab sawb dov zeb. Cov yam ntxwv zoo ntawm cov thaub qab yob yog qhov siab tawv, zoo hardness uniformity thiab sib sib zog nqus tawv txheej ntawm yob lub cev, zoo zog thiab toughness ntawm yob caj dab thiab yob lub cev. lub thaub qab yob muaj siab hnav tsis kam thiab tev tawm, muaj zog tiv thaiv kev sib tsoo. Lub forged steel yob ntawm 1000mm los yog tsawg dua yog ua los ntawm 86CrMoV7 thiab 9Cr2Mo. Nws cov ntsiab lus carbon yog 0.80% txog 0.95% thiab Cr cov ntsiab lus yog 2%. Cr4 thiab Cr5 rov qab yob muaj cov ntsiab lus ntawm 0.4% mus rau 0.6% thiab Cr cov ntsiab lus ntawm 4% mus rau 5%, haum rau high-speed steel thiab semi-high-speed steel ua hauj lwm yob.

Rau qee qhov me me, forged steel thaub qab yob ntawm 1000mm lossis tsawg dua yog ua los ntawm 86CrMoV7 thiab 9Cr2Mo, nws cov ntsiab lus carbon yog 0.80% txog 0.95% thiab Cr cov ntsiab lus yog 2%.
Cov hlau rau Cr4 thiab Cr5 thaub qab yob muaj cov ntsiab lus carbon ntawm 0.4% txog 0.6% thiab Cr cov ntsiab lus ntawm 4% mus rau 5%. Lub hardened, hnav tsis kam, tev tawm tsis kam, qaug zog-tiv taus thiab tiv thaiv kev sib tsoo ntawm cov thaub qab yob yeej tshem tawm qhov tshwm sim ntawm qhov tshwm sim ntawm yob lub cev nto thiab yob txiav kev sib tsoo. Cr4, Cr5 steel thaub qab yob yog tsim rau high-speed steel thiab semi-high-speed steel ua hauj lwm yob.

Cov yam ntxwv ntawm High-speed steel yob (HSS yob)

1. High-speed steel yob cov ntaub ntawv muaj cov hlau alloy siab xws li vanadium, tungsten, chromium, molybdenum, thiab niobium. Cov hom carbides hauv cov qauv yob yog MC thiab M2C. Muab piv nrog cov ductile hlau rolls nrog high-nickel-chromium rolls, steel dhau ntim yog siab txhua lub sij hawm, uas txuag lub sij hawm ntawm yob hloov, txhim kho zeb kev khiav hauj lwm efficiency thiab txo cov nqi ntau lawm.

2. High-speed steel yob muaj thermal stability zoo. Ntawm qhov kub dov, yob nto muaj zog dua thiab zoo hnav tsis kam.
High-speed steel rolls muaj zoo hardenability, thiab lub hardness ntawm lub nto ntawm lub yob lub cev mus rau sab hauv ntawm lub ua hauj lwm txheej tsis tshua muaj txo, yog li xyuas kom meej tias cov yob muaj sib npaug zoo hnav tsis kam los ntawm sab nraud mus rau sab hauv.

3. Thaum lub sij hawm siv high-speed steel yob, nyob rau hauv zoo txias txias, ib tug nyias thiab ntom oxide zaj duab xis yog tsim nyob rau saum npoo ntawm lub yob lub cev. Cov khaub ncaws no, nyias thiab ntom oxide zaj duab xis tuaj yeem muaj nyob rau lub sijhawm ntev yam tsis poob, ua rau lub siab ceev steel yob hnav-tiv taus zoo dua.

4. High-speed steel rolls muaj cov khoom loj nthuav dav coefficient thiab thermal conductivity zoo. HSS rolls txuas ntxiv zuj zus vim qhov nthuav dav ntawm cov khoom siv hlau ceev ceev lawv tus kheej. Thaum lub sij hawm dov txheej txheem, qhov kev hloov ntawm dov zawj yog me me, thiab qhov sib xws ntawm qhov loj ntawm lub qhov yog khaws cia rau lub sijhawm ntev, tshwj xeeb tshaj yog thaum dov lub bar lossis rebar, uas yog qhov tsim nyog rau kev tswj qhov tsis zoo ntawm cov khoom siv dov.
5. Cov tub ntxhais ntawm cov centrifugally cam khwb cia high-speed steel yob yog ua los ntawm alloy ductile hlau, yog li, lub caj dab yob lub zog muaj zog.

Daim ntawv thov
Bar dov zeb, splitter zeb khib, high-speed hlau rod xov zeb, kub dov nqaim sawb xov zeb, seem thiab zawj steel dov zeb.