NM400 txiav thiab vuam txoj kev
NM400 hnav-resistant steel phaj yog hom cua sov- kho steel phaj. Zoo li feem ntau hnav- cov phaj hlau tiv taus ntawm kev ua lag luam, nws yog cua sov rau qee qhov kub. Thaum qhov kub siab tshaj 300 degrees, lub hardness yuav poob sai heev. Yog li ntawd, thaum txiav, hnav phaj yuav tsum siv txias txiav kom ntau li ntau tau, txwv tsis pub qhov teeb meem ntawm kev txiav hardness poob yuav tshwm sim.
NM400 hnav- cov phaj resistant yog cov cua sov- kho thiab tempered steel phaj, yog li feem ntau ntawm lawv tau raug txiav los ntawm cov ntshav los yog lwm txoj kev txiav. Nplaim txiav yog txiav cov phaj hnav nrog cov pa oxygen siab, yog li cov txheej txheem nplaim hluav taws yuav muaj qhov kub ntxhov ntawm cov phaj hnav. Tam sim no, nplaim taws- txiav Abrasion 400 hnav phaj tseem siv tau. Feem ntau, lub hardness ntawm qhov txiav tsis siab thaum siv. Qhov teeb meem ntawm kev txo qis hauv hardness tuaj yeem tsis quav ntsej. Vim hais tias nplaim taws txiav tuaj yeem txiav ntug- mus rau- ntug, cov khoom txuag, thiab cov nqi txiav kuj tsawg.
Txoj kev txiav rau NM400
Txoj kev txiav rau NM400 hnav- cov ntawv hlau tiv taus tuaj yeem muab faib ua ob pawg loj: txiav txias thiab txiav kub. Txias txiav muaj xws li waterjet txiav, shearing, sawing, los yog abrasive txiav; kub txiav muaj xws li oxy- hluav taws xob txiav (tom qab no hu ua "nplaim taws"), plasma txiav, thiab laser txiav. Qhov kev xaiv tiag tiag yog nyob ntawm cov hlau phaj tuab, qhov yuav tsum tau ua kom raug, thiab kev ua siab ntev rau cov cua sov- thaj tsam cuam tshuam.
Kev sib piv ntawm txoj kev txiav
| Txoj kev txiav | Siv Thickness | Thaum tshav kub kub-Affected Zone (HAZ) | Ntug Zoo | Txiav ceev | Kev pom zoo ua ntej |
|---|---|---|---|---|---|
| Waterjet Txiav | Tsawg dua lossis sib npaug li 100 mm + | Tsis muaj (Cold Cut) | Zoo heev | qeeb | ★★★★★ (siab- tus nqi tuab daim hlau) |
| Laser Txiav | Tsawg dua los yog sib npaug li 20-30 mm | me me heev | Zoo heev | Ceev ceev | ★★★★★ (nyias daim hlau, siab precision) |
| Plasma Txiav | Tsawg dua los yog sib npaug li 50 mm | Nruab nrab | Zoo | Ceev tshaj | ★★★★☆ (nyiam rau batch ntau lawm) |
| Nplaim Txiav | Tsis muaj kev txwv nruj | Loj | Rough | qeeb | ★★☆☆☆ (siv nrog ceev faj) |
- Laser txiav: Laser txiav yog tsim rau txiav NM400 hnav-cov hlau tsis muaj zog, tshwj xeeb tshaj yog rau siab- precision txiav ntawm nyias daim hlau (tsawg dua lossis sib npaug li 20mm) thiab ua cov txheej txheem nyuaj. Laser txiav ua rau muaj cua sov me me- thaj tsam cuam tshuam (kwv yees li 0.2mm), ntug zoo heev, thiab feem ntau tso cai rau kev nkag ncaj qha rau hauv cov txheej txheem tom ntej yam tsis muaj kev kho mob thib ob.
- Plasma Cutting: Plasma txiav yog tus nqi zoo tshaj plaws - kev xaiv zoo rau kev tsim khoom ntawm NM400 hnav- cov phaj hlau tiv taus. Underwater plasma txiav yog pom zoo rau kev txiav siab -qib coj- hlau tiv taus. Kev txiav hauv qab dej tau zoo nqus cov cua sov ntau dhau thiab txo cov cua sov- thaj tsam cuam tshuam, ua rau nws yog ib txoj hauv kev siv ntau tshaj plaws hauv kev tsim khoom.
- Waterjet Txiav: Waterjet txiav yog tib txoj kev txiav uas tshem tawm tag nrho cov cua sov- thaj tsam cuam tshuam. Tsis muaj thermal deformation thaum lub sij hawm txiav cov txheej txheem, thiab cov npoo txiav tag khaws cov qub hardness thiab toughness ntawm NM400. Txawm hais tias qhov kev txiav ceev kuj qeeb thiab tus nqi siab dua, waterjet txiav yog qhov kev daws teeb meem rau cov phaj tuab tshaj 50mm lossis siab tshaj - cov ntsiab lus tseem ceeb nrog rau kev qaug zog ntawm lub neej.
- Nplaim taws txiav: Txoj kev nplaim taws txiav rau qib siab- qib hnav- cov hlau tsis muaj zog yog yooj yim li qhov zoo tib yam qis- carbon thiab qis- alloy steel, tab sis yuav tsum tau saib xyuas tshwj xeeb thaum txiav cov phaj tuab ntawm hnav- cov hlau tsis muaj zog. Lub ntsiab lus tseem ceeb yog tias raws li lub thickness thiab hardness ntawm steel phaj nce, qhov kev pheej hmoo ntawm txias cracking thaum txiav kuj nce. Txhawm rau kom txiav qhov zoo, cov roj siab dua thiab cov pa oxygen yuav tsum raug xaiv thaum lub sijhawm txiav cov nplaim taws, thaum txiav ceev yuav tsum raug txo kom tsim nyog.
Txiav thiab vuam xav tau
Txhawm rau kom siv tag nrho cov khoom zoo tshaj plaws ntawm NM400 steel, kev ua raws nraim li kev kho vuam, txiav, thiab tsim cov txheej txheem yog qhov tseem ceeb. Cov txheej txheem kev ua haujlwm no pab tswj cov hlau qhov qub hnav tsis kam, siab hardness, thiab zoo toughness, thaum txo qhov kev pheej hmoo ntawm cov khoom puas thaum ua.
Cov ntsiab lus tseem ceeb rau machining NM400 steel
Vuam
Rau cov phaj tuab (Ntau dua lossis sib npaug li 20mm), preheat rau 150-250℃kom tsis txhob tawg.
Siv tsawg-hydrogen electrodes (piv txwv li, E7018) kom tsis txhob hydrogen-induced cracking.
Tswj cov khoom siv hluav taws xob, ua kom qhov kub thiab txias hauv qab 150℃los tiv thaiv softening.
Siv cov hlaws ncaj ncaj los txo cov cua sov- thaj tsam cuam tshuam.
Txiav thiab Shaping
Plasma lossis laser txiav yog qhov zoo dua rau kev txiav kom zoo dua thiab deformation tsawg dua.
Txias khoov yog nyiam; lub vojvoog dabtsi yog khoov yuav tsum phim lub phaj thickness kom tsis txhob muaj cua sov.
Tshaj tawm -Kev kho cua sov
PWHT kev ntxhov siab tuaj yeem ua tau, tab sis yuav tsum tau saib xyuas kom tsis txhob txo qis vim qhov kub thiab txias.
Drilling/Machining
Siv cov carbide lossis siab -cov cuab yeej steel ceev ntawm qhov ceev nrog lubrication txaus.
Ntxuav lub npoo ntawm xeb thiab roj ua ntej vuam.
Tswj qhov kub thiab txias thoob plaws hauv cov txheej txheem kom tsis txhob overheating thiab kev ua haujlwm degradation.
Kev ua kom zoo tuaj yeem tswj tau qhov hnav tsis kam, hardness, thiab toughness ntawm NM400, txuas cov cuab yeej siv lub neej thiab txo cov nqi tu.
🛒 Tiv tauj peb rau NM400 Txiav thiab Vuam Kev Pabcuam
Tiv tauj peb tam sim no rau ib nqe lus
✅ Ntau Cov Khoom Muag: Thawj NM400 / NM400D / NM400E qib hnav- cov hlau tsis muaj zog los ntawm cov hlau mills xws li Baowu, Ansteel, thiab Nanjing Steel, nrog thicknesses li ntawm 6 mus rau 100mm.
✅ Kev Txiav Txim: Peb muab laser txiav, plasma txiav (nrog rau kev txiav hauv qab), txiav waterjet, thiab cov kev pabcuam nplaim taws. Precise txiav raws li drawings yog ua tau.
FAQ:
NM400 steel yog dab tsi?
NM400 Phaj yog lub siab - lub zog, hnav- cov hlau tsis muaj zog paub txog nws qhov zoo tshaj qhov ua tau zoo thiab lub zog. NM400 yog Suav GB tus qauv steel qib. Cov khoom siv NM 400 yog siv dav hauv kev lag luam uas tsis kam tiv thaiv kev puas tsuaj (ua puas resistant) yog ib qho tseem ceeb, xws li hauv kev tsim kho thiab mining sectors.
Qhov twg zoo dua, NM400 lossis AR400?
Tsis yog ib txwm zoo dua. Qhov kev xaiv yog nyob ntawm hardness, toughness, thickness, ua, thiab qhov project specifications.
Puas yog AR400 qib ASTM?
AR400 feem ntau yog lub npe lag luam rau 400 Brinell abrasion-cov phaj hlau tiv taus, tsis yog ib qib ASTM ruaj khov.
Kuv yuav tsum kuaj dab tsi ua ntej siv NM400 tsis yog AR400?
Tshawb xyuas hardness, chemistry, toughness, thickness, vuam, dabtsi yog khoov, thiab daim ntawv pov thawj zeb xeem.