Kev tawg tom qab vuam nyob rau hauv cov ntaub ntawv overheated tsis tuaj yeem kho tau vim tias cov khoom tau raug kev puas tsuaj tsis zoo xws li cov nplej ciam teb oxidation, voids, lossis hauv zos melting. Tsis muaj txoj kev kho yuav rov qab tau nws cov qauv kev ncaj ncees thiab kev thauj khoom -cov kabmob muaj peev xwm.
1. Vim li cas cov kab nrib pleb kho tsis tau?
Kev poob mus tas li ntawm kev cog qoob loo ntawm kev cog qoob loo: Oxygen tau tsim ib qho kev sib txuas oxide txuas ntxiv raws li cov ciaj ciam ntawm cov qoob loo, ua kom puas tag nrho cov nyiaj ntawm cov hlau atoms;
Tsis tshua muaj embrittlement ntawm microstructure: Lub plasticity ntawm lub overheated cheeb tsam mus zero, thiab vuam los yog kho vuam yuav ua rau cov tshiab intergranular tawg;
Kev kho tsis zoo thiab txaus ntshai: Txawm hais tias qhov tawg tau sau, qhov sib koom ua ke tseem tsis muaj zog lav, ua rau nws muaj kev puas tsuaj sai sai thaum lub sijhawm ua haujlwm.
Kev pom zoo engineering: Overheating=mus tas li tsis ua hauj lwm; txwv tsis pub kho txhua yam.
2. Txoj kev tuav kom raug: Hloov ncaj qha
Kev Txiav Txim Tam Sim No: Thaum kuaj pom tias muaj cua sov thiab cov kab nrib pleb, cov khoom siv yuav tsum raug txiav kom tsis txhob tawg tam sim ntawd thaum tsim khoom.
Hloov nrog Ib Ntu Tshiab: Rov ua dua tshiab siv cov ntaub ntawv tiv thaiv kev loj hlob ntawm cov nplej (xws li H13+Ti, PM-H13).
Kev Tshawb Fawb Txog Kev Tshawb Fawb: Tshawb xyuas qhov ntsuas kub tsis raug thiab cov cua kub ntau dhau los tiv thaiv kev rov tshwm sim.
Kev tiv thaiv zoo dua li kev kho mob: nruj me ntsis tswj qhov kub khiav khiav hauj lwm kub (H13 steel Tsawg dua los yog sib npaug li 600 degree) thiab tsis tu ncua calibrate thermocouples.
3. Pom zoo lwm txoj kev daws teeb meem
Siv High- Cov ntaub ntawv ruaj khov: xws li hmoov hlau metallurgy (PM-H13) thiab microalloyed steel (H13+Ti), uas muaj cov khoom zoo thiab zoo li qub microstructures thiab muaj zog tiv thaiv overheating.
Optimize Process Control: Teem tsis siv neeg hla- tswb ntsuas kub thiab lub zog- tawm kev tiv thaiv, thiab siv kev saib xyuas tsis tu ncua nrog dual thermocouples.
Tsim kom muaj Kev Tshawb Nrhiav Mechanism: Ua qhov kev kuaj xyuas cov khoom siv hlau tsis tu ncua ntawm cov pwm tshiab thaum tuaj txog ntawm lub Hoobkas thiab thaum lub sijhawm ua haujlwm kom pom cov kev hloov pauv sai. Cov tswv yim tswv yim: Ua qhov ntsuas metallographic txhua 6-12 lub hlis, uas tuaj yeem luv luv mus rau 3-6 lub hlis nyob rau hauv siab -load tej yam kev mob.
