Puas yog lub tshuab txias txias ribbed steel bar tshuab yuav tsum nquag hloov pwm?
Txias- Rolled ribbed steel tuav yog tsim nyob rau saum npoo ntawm cov hlau tuav los ntawm cov txheej txheem txias dov. Cov pwm yuav tsum yog cov khoom siv tseem ceeb uas siv los ua cov tav hauv cov txheej txheem no. Ua ntej, cov khoom ntawm pwm tuaj yeem cuam tshuam rau nws cov durability. Secondly, zaus ntawm kev siv kuj yog ib qho tseem ceeb. Tsis tas li ntawd, lub hardness ntawm cov txheej txheem kuj yuav tsum tau txiav txim siab, thiab tsim pwm yog tsim nyog.
1. Cov yam tseem ceeb cuam tshuam rau pwm lub neej
Mould khoom thiab txheej txheem:
High-cov pwm zoo (xws li cov hlau alloy, tungsten carbide thiab lwm yam hnav- cov ntaub ntawv tiv taus) tuaj yeem kav ntev txog ntau txhiab tons ntawm cov hlau tuav, thaum cov pwm zoo tib yam yuav kav ntev txog ntau pua tons. Kev kho cua sov ntawm qhov chaw (xws li nitriding, txheej) tuaj yeem ua kom ntev kev pab cuam lub neej.
Cov khoom siv hardness:
Siab - lub zog steel (xws li HRB500) hnav cov pwm hnyav dua li cov hlau zoo tib yam (HRB400), uas tuaj yeem ua rau pwm lub neej luv ntawm 30%-50%.
Khoom siv load:
Kev coj tus nqi ntawm pwm nyob rau hauv tas li 24-teev ntau lawm tej zaum yuav yog 2-3 zaug ntawm kev siv sib quas ntus. Piv txwv li, ib rooj plaub qhia tau hais tias pwm yuav tsum tau kho txhua txhua 2 lub hlis nyob rau hauv tas li ntawd ntau lawm, thaum nws muaj peev xwm txuas mus rau 6 lub hlis nyob rau hauv 8-teev ua hauj lwm ib hnub twg.
Rolling txheej txheem parameter:
Excessive reduction (such as more than 15%) or excessive roller speed (such as >30m / min) yuav ua rau pwm kub kom nce siab thiab ua kom qaug zog tawg.
2. Kev ntsuas tseem ceeb rau kev saib xyuas
Kev tshuaj xyuas txhua hnub:huv si steel bar khib nyiab (tshwj xeeb tshaj yog cov nplai oxide ua los ntawm Q235 steel) kom tsis txhob khawb ntawm qhov chaw ua haujlwm ntawm pwm.
Lubrication Management:siv siab - roj kub (xws li molybdenum disulfide) thiab ntxiv nws txhua 4 teev kom txo cov kev sib txhuam coefficient li ntawm 40%.
Hnav saib xyuas:siv lub laser micrometer los ntsuas qhov rib zawj qhov tob tsis tu ncua. Thaum qhov sib txawv tshaj 0.2 hli, cov pwm yuav tsum tau kho. Cov ntaub ntawv los ntawm cov nroj tsuag steel qhia tau hais tias kev kho raws sij hawm tuaj yeem txuas lub neej ntawm pwm los ntawm 25%.
3. Kev hloov pauv nyiaj txiag
Kev suav nqi:Tus nqi pwm suav txog li 1.5% -3% ntawm tus nqi ntawm ib tuj ntawm steel tuav. Thaum tus nqi kho pwm nce mus txog 70% ntawm tus nqi ntawm cov pwm tshiab, kev hloov pauv yog kev lag luam ntau dua.
Batch Management:Nws raug pom zoo kom khaws 2-3 txheej pwm rau kev sib hloov kom tsis txhob muaj xwm txheej ceev cuam tshuam rau kev tsim khoom. Piv txwv li, ib lub tuam txhab txais yuav peb-hloov hom, thiab txhua txheej pwm yog tig thiab txias tom qab 200 teev ntawm kev siv.
Xaus
Raws li cov qauv kev ua haujlwm thiab kev saib xyuas, siab- cov pwm zoo tuaj yeem siv tsis tu ncua rau 3-6 lub hlis, thiab kev hloov pauv txhua xyoo feem ntau yog tswj hwm ntawm 4-6 zaug. Los ntawm kev xaiv cov ntaub ntawv ua tau zoo, kev ua kom zoo dua qhov tsis sib xws (xws li tswj kev txo qis rau 10% -12%), thiab siv kev tiv thaiv kev tiv thaiv, kev hloov zaus tuaj yeem txo qis ntxiv thiab kev tsim khoom tuaj yeem txhim kho los ntawm 15% -20%. Nws raug nquahu kom ua qhov kev ntsuam xyuas pwm zoo tom qab tsim 5,000-8,000 tons ntawm steel tuav.
