NM500 hnav resistant steel phaj yog dab tsi?
Tuam Tshoj txoj kev hnav-resistant steel qib naming system txais cov ntsiab lus ntawm "NM + hardness tus nqi," npog xya qib pib ntawm NM300 txog NM600, nrog rau qhov hardness ntau yam txuas ntxiv ntawm 270 HBW txog 640 HBW. NM500, nrog lub hardness ntau ntawm 470 ~ 540 HBW, yog positioned raws li ib tug siab - zog hnav- qib resistant, haum rau hnyav hnyav scenarios xws li hard pob zeb mining thiab vibrating npo phaj.
NM500 yog qib siab -lub zog hnav- qib steel phaj hauv Suav teb tus qauv txheej txheem. Nws lub npe muaj lub ntsiab lus tseeb engineering: "N" sawv cev rau "hnav-resistant," "M" sawv cev rau "hnav-resistant," thiab tus naj npawb "500" qhia tias steel phaj qhov nruab nrab Brinell hardness tus nqi nce mus txog 500 HBW. Raws li qib siab -qib kawg hauv kev hnav- cov hlau tsis muaj zog, NM500 tshwj xeeb yog tsim los rau hnyav-cov haujlwm hnav hauv engineering machinery, mining machinery, thiab lwm yam kev siv. Nrog nws zoo heev hnav tsis kam, nws muaj peev xwm muab kev tiv thaiv zoo rau cov khoom siv hauv hnav- cov cheeb tsam tiv taus, txuas cov cuab yeej siv lub neej thiab txo kev txij nkawm thiab kev nqis peev nyiaj txiag.
Tiv tauj peb tam sim no rau ib nqe lus
Kev ua raws li cov qauv thiab cov txheej txheem
Tus qauv tseem ceeb rau NM500 hnav- cov hlau resistant yog GB/T 24186-2009 "High-strength Wear-Resistant Steel Phaj rau Engineering Machinery," uas siv rau cov hlau phaj nrog lub thickness tsis pub tshaj 80mm thiab feem ntau ua hauj lwm rau hnav{- siv zog, thiab kev ua liaj ua teb. Nyob rau hauv 2022, tus qauv no tau hloov kho rau GB / T 24186-2022, ntxiv refining cov kev cai thiab qib zoo system rau hnav-resistant steel.
Hais txog cov qib zoo, raws li qhov yuav tsum tau ua rau qis- qhov kub thiab txias, NM series ntxiv D / E cov qauv tsim tom qab qib pib: Qib D lav qhov cuam tshuam lub zog ntawm 21 ~ 24 J ntawm -20 degree, haum rau cov khoom siv mining nyob rau sab qaum teb lub caij ntuj no; Qib E tseem ua tiav lub zog cuam tshuam ntawm 21 ~ 24 J ntawm -40 degree, ua rau nws zoo tagnrho rau cov khoom siv hauv thaj chaw txias heev xws li Northeast Tuam Tshoj thiab Siberia.
Tshuaj muaj pes tsawg leeg thiab mechanical zog
1. Cov khoom siv tshuaj
Cov tshuaj muaj pes tsawg leeg ntawm NM500 yog tsim los kom ntseeg tau siab hardness thaum txo cov brittleness ntau dhau. Nws cov tshuaj lom neeg muaj pes tsawg leeg thiab lub luag haujlwm ntawm cov ntsiab lus tseem ceeb tau qhia hauv cov lus hauv qab no.
| Element | Cov ntsiab lus ntau yam (feem ntau, %) | Main Function / Lub luag haujlwm |
|---|---|---|
| Cov pa roj carbon (C) | 0.20–0.38 | Muab lub hauv paus hardness; Cov ntaub ntawv hnav-resistant carbides nrog alloying ntsiab |
| Silicon (Si) | 0.30–0.70 | Deoxidation thiab solid-solution ntxiv dag zog rau; txhim kho oxidation tsis kam thiab lub zog |
| Manganese (Mn) | 1.00–1.80 | Nce hardenability, xyuas kom cov tub ntxhais hardening ntawm tuab daim hlau, thiab txhim kho toughness |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025 | Tswj nruj me ntsis teeb meem; zam qhov kub thiab txias brittleness thiab weld tawg |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.015 | Lowers kub workability thiab toughness; yuav tsum khaws cia nyob rau theem qis heev |
| Chromium (Cr) | 0.80–1.50 | Cov ntaub ntawv hnav-resistant chromium carbides; txhim kho hardenability thiab corrosion-hnav tsis kam |
| Molybdenum (hli) | 0.20–0.60 | Refines grain loj; txhim khu kev kub-kub lub zog thiab tempering stability |
| Nickel (Ni) | 0.50–1.00 | Lub ntsiab toughness; txo ductile-brittle hloov kub; xyuas kom tsis txhob muaj qhov kub thiab txias |
| Vanadium / Niobium (V / Nb) | Tsawg dua lossis sib npaug li 0.10 (tag nrho) | Ntxiv nyob rau hauv ib txoj lw tus nqi rau refine nplej; ntxiv zog thiab hnav tsis kam |
2.Mechanical zog
Cov khoom siv kho tshuab ntawm NM500 muaj qhov sib npaug ntawm "siab hardness + siab zog + txwv toughness".
| Khoom | Tus nqi | Lus hais |
|---|---|---|
| Brinell hardness (HBW) | 480-525 (rau thickness Tsawg dua lossis sib npaug li 70 hli) | Qhov taw qhia tseem ceeb hnav-tiv taus; nto hardness me ntsis txo thaum thickness tshaj 70 hli |
| Tensile zog (MPa) | Ntau tshaj los yog sib npaug rau 1300 | deb tshaj li cov qauv hlau zoo tib yam; kom tsis txhob deformation nyob rau hauv hnyav loads |
| Yield zog (MPa) | Ntau dua lossis sib npaug li 500 | Muaj zog tiv thaiv cov yas deformation |
| Elongation tom qab tawg (%) | Ntau dua lossis sib npaug li 7–16 | Tsawg dua cov qib qis hnav-tiv taus steels, tab sis txaus kom tsis txhob tawg tawg |
| Kev cuam tshuam absorbed zog (-20 degree, J) | Ntau dua lossis sib npaug li 24 |
Guarantees tsis kam rau nkig tawg nyob rau hauv qis-kub ib puag ncig |
NM 500
Cov txheej txheem ntau lawm ntws
Cov txheej txheem tsim khoom ntawm NM500 hnav- cov phaj steel resistant integrates ob peb yam tseem ceeb ntawm niaj hnub metallurgical technology. Nws lub hom phiaj tseem ceeb yog kom tau txais ib qho zoo sib xws, siab -hardness martensitic microstructure los ntawm kev tswj hwm microstructural.
Smelting: Thawj smelting yog ua nyob rau hauv lub converter los yog hluav taws xob rauv, ua raws li los ntawm ladle refining (LF / VD, thiab lwm yam). Kev tswj nruj nruj yog tswj xyuas qhov nqaim ntawm qhov hloov pauv hauv qhov purity thiab tshuaj lom neeg muaj pes tsawg leeg ntawm cov hlau molten, txo cov ntsiab lus ntawm cov teeb meem xws li phosphorus thiab sulfur.
Nruam Casting thiab Slab cua sov: Molten steel yog cam khwb cia rau hauv slabs siv lub nruam casting tshuab, thiab ces rhuab nyob rau hauv lub cua sov rauv rau ib tug tshwj xeeb kub ntau yam los npaj lub microstructure rau tom ntej dov.
Tswj Rolling thiab Tswj Txias: Siab -cov cuab yeej tswj dov yog ua haujlwm. Los ntawm precisely tswj lub dov hla, deformation tus nqi, thiab kub, lub grain qauv yog refined. Qhov kawg dov kub muaj qhov cuam tshuam loj rau microstructure ntawm nruab nrab -manganese martensitic NM500 steel, ncaj qha cuam tshuam rau nws cov khoom siv kho tshuab tom qab kev kho cua sov.
Quenching (Core Kauj Ruam ntawm Tempering): Cov kauj ruam no yog qhov tseem ceeb rau kev ua tiav qhov siab hardness ntawm NM500. Online quenching yog dav siv los ua kom txias txias dov steel daim hlau, hloov cov qauv austenitic rau siab -hardness martensite. Nyob rau hauv xyoo tas los no, cov tuam txhab lag luam siab heev tau qhia txog ob -theem kub- tswj quenching thiab txias txheej txheem: siab- theem siab ua raws li theem qis- siab. Nyob rau hauv cov txheej txheem no, lub siab - theem siab ceev kom txias cov hlau kom qis dua 500℃ntawm tus nqi siab tshaj qhov tseem ceeb txias tus nqi kom induce lub martensitic transformation, thaum lub qis - theem siab siv intermittent txias ntawm nruab nrab mus rau qis tus nqi. Qhov no tswj cov uniformity ntawm martensite qhov ntev, ua rau zoo heev formability.
Tempering: Tom qab quenching, tempering kev kho cua sov yog ua (feem ntau ntawm 200-300℃rau 1-2 teev) kom tshem tawm quenching kev nyuaj siab, txhim kho toughness, stabilize microstructure, thiab tiv thaiv kom tsis txhob muaj zog hardness ntau dhau.
Kev siv tshuab
Txiav
Nplaim txiav, txiav plasma, lossis laser txiav tuaj yeem siv. Thaum lub sij hawm hluav taws kub txiav, vim lub siab hardness thiab siab carbon sib npaug, muaj ib tug tseem ceeb nyiam rau txias cracking; preheating yog tsim nyog ua ntej txiav. Preheating rau 150 ~ 200℃yog pom zoo, thiab preheating yog yuav tsum tau rau thicknesses tshaj 30 hli. Plasma txiav yog tsim rau nruab nrab - daim hlau nyias (<50mm), offering fast cutting speeds and a small heat-affected zone. Laser cutting is suitable for thin and medium-thick plates, achieving an accuracy of ±0.1mm, and is suitable for machining complex-shaped parts.
Vuam
NM500 muaj qhov sib npaug ntawm cov alloy siab thiab siab carbon sib npaug, ua rau nws nkag siab rau cov txheej txheem vuam thiab nthuav tawm qhov tseem ceeb rau kev sib tsoo txias. Weldability tsis zoo (20†L2-L3). Preheating rau qhov tsim nyog kub (feem ntau tshaj 100 ~ 150 degree) yog qhov tseem ceeb ua ntej vuam. Tsawg- hydrogen vuam pas nrig lossis cov xov hlau yuav tsum tau siv, thiab cov khoom siv hluav taws xob yuav tsum tau tswj nruj me ntsis. Thaum lub sij hawm vuam, lub hauv paus ntsiab lus ntawm "xaiv cov khoom siv vuam zog raws li cov khoom siv nrog lub zog qis thiab txiav txim siab qhov kub thiab txias raws li cov khoom siv nrog lub zog siab dua" yuav tsum ua raws. Tom qab-weld stress-relief annealing yog pom zoo kom tshem tawm cov kev ntxhov siab nyob hauv qhov sib koom ua ke.
Main daim ntawv thov scenarios
NM500 yog siv dav hauv hnav-cov khoom tiv thaiv ntawm cov cuab yeej siv, muab kev hnav- tiv thaiv tiv thaiv rau cov khoom tseem ceeb. Nws cov ntawv thov tseem ceeb suav nrog:
Mining Machinery: Excavator thoob, txiav ntug, thiab sab txiav ntug; crusher liners; dump tsheb lub cev thiab hauv qab daim hlau; hloov conveyor troughs thiab ntsia hlau feeders.
Siv Machinery: Bulldozer thoob daim hlau, loader txiav npoo, scraper conveyor troughs, thiab lwm yam.
Metallurgical Machinery: Sintering tshuab trolleys, blast furnace tswb, thiab hnav- cov ntaub ntawv tiv thaiv rau cov khoom siv coking, muaj peev xwm tiv taus siab - qhov kub thiab txias txog li 400℃.
Coal thiab Fais Fab Machinery: Pulverized thee conveying pipelines, thee mill liners, dust collector flues, fan impeller housings, the coal crusher liners, thee hoppers, and screw feeders, etc.
Cov Khoom Siv Hauv Tsev: Cov cement zeb liners, cib tshuab pwm, txo cov nqi tsim khoom los ntawm kev txhim kho hnav tsis kam.
Tsis tas li ntawd, NM500 kuj tseem siv me me hauv kev tsim cov khoom precision xws li abrasives thiab bearings. Nrog rau kev txhim kho txuas ntxiv ntawm thev naus laus zis, qib siab- kawg qib xws li NM500D thiab NM500E tau ua tiav zoo rau cov khoom siv tshiab xws li cov ntse loj crushers thiab dav - lub cev mining tsheb.
Qib Kev Sib Piv thiab Kev Xaiv Phau Ntawv Qhia
| Qib | Hardness Range (HBW) | Hnav Resistance | Toughness | Siv tau cov xwm txheej ua haujlwm |
|---|---|---|---|---|
| NM 400 | 370–440 | Lub hauv paus | Zoo heev | Kev hnav nruab nrab, sib npaug tag nrho kev ua tau zoo, haum rau hnyav hnyav loads |
| NM450 | 410–480 | Siab (15-30% siab dua NM400) | Zoo | Comprehensive kev ua tau zoo, zoo sib npaug ntawm toughness thiab hardness |
| NM 500 | 470–540 | Siab heev | Txwv tsis pub | Kev hnav siab, qhov cuam tshuam qis rau nruab nrab; nyiam rau qhov hnyav hnav ib puag ncig |
Tiv tauj peb hnub no rau cov nqi hwm NM500 hnav- cov ntawv hlau tiv taus - zoo dua hardness, zoo heev durability, thiab cov nqi sib tw kom ntev koj cov khoom siv lub neej.
Peb muab:
Ua tib zoo siab - zoo NM500 steel daim hlau
Ua tiav Factory Test Certificate (MTC)
Customizable qhov ntau thiab tsawg, xa khoom sai
Tiv tauj peb hnub no rau cov lus sib tw heev thiab txo koj cov nqi ntawm qhov project los ntawm kev siv NM500 steel daim hlau.
Tiv tauj peb tam sim no rau ib nqe lus
FAQ:
Qhov txawv ntawm Hardox 500 thiab NM500 yog dab tsi?
Hardness: NM500 feem ntau muaj qhov nyuaj ntawm ib puag ncig 470-540 HBW (Brinell hardness), thaum Hardox 500 feem ntau ntog hauv thaj tsam ntawm 470-530 HBW. Qib hardness qhia tias lawv muaj peev xwm tiv taus abrasive hnav thiab cuam tshuam.
Qhov txawv ntawm AR500 thiab NM500 yog dab tsi?
AR500: Cov pa roj carbon ntau (C: ~ 0.38-0.45%), chromium (Cr: ~ 1.5%), thiab boron (B: 0.0005-0.006%) rau kev txhim kho hardness thiab corrosion kuj. NM500: Tsawg carbon (C: Tsawg dua lossis sib npaug rau 0.38%), ntxiv nickel (Ni: Tsawg dua lossis sib npaug li 1.0%) thiab molybdenum (Mo: Tsawg dua lossis sib npaug li 0.65%) rau kev sib npaug weldability thiab toughness.
NM500 puas tuaj yeem welded?
NM500 yog weldable tab sis xav tau cov txheej txheem vuam nruj. Nws yuav tsum tau preheating ntawm 100-150 degree, sib tw qis - hydrogen vuam cov ntaub ntawv, thiab kom zoo ncej-weld tempering kev kho mob los lav vuam zoo.