Cov Khoom Siv Neeg Kho Tshuab Hauv Daim Ntawv Thov

Cov Khoom Siv Neeg Kho Tshuab Hauv Daim Ntawv Thov
Cov nyhuv ntawm qhov kub ntawm cov khoom siv neeg kho tshuab
Lub zog ntawm Q345 txo qis dua nrog kev nce kub, thaum nws muaj kev txo qis nrog txo qhov ntsuas kub tsawg:
Thaum temperatures ntau dua 300 degree, lub zog los txo qis (piv txwv li, thaum 350 degree, nws yog kwv yees li 70% ntawm chav tsev kub). Zam txhob siv nyob rau hauv high - kub, ntev -}}}} belting applics.
Thaum kub nyob hauv qab qhov cuam tshuam kub ntawm cov qhab nia zoo (piv txwv li, hauv qab no} 20℃rau Q345B), "tsawg-kub brittle begitate" yuav tshwm sim. Yog li ntawd, cov qib zoo thiab koog puag ncig ua haujlwm qhov kub yuav tsum tau sib phim nruj me ntsis.
Cov nyhuv ntawm vuam ntawm cov khoom siv me txhua yam
Thaum lub sij hawm vuam, grain coarsening nyob rau hauv cov cua sov - bein cuam tshuam cheeb tsam (tshwj xeeb yog thaum preheating tsis tau ua lossis txias nrawm dua). Cov kev ntsuas hauv qab no yuav tsum tau ua kom tsis txhob muaj qhov no:
Xaiv Matching Tsawg - hydrogen electrodes (xws li e5015) lossis xaim hluav taws xob (xws li er50-6);
Preheat ua ntej vuam (rau thickness> 20mm, preheat kub ntau dua los yog sib npaug rau 80 degree). Qeeb Cua Txias lossis Kev Kho Mob Kub Siab Yuav tsum tau ua tom qab vuam. Kev txiav txim siab tsim rau cov teebmeem tuab
The yield strength of thick plates (>63 hli) yog txo. Yog li, kev tsim qauv yuav tsum yog ua raws li tuab tiag tiag kom tsis txhob muaj kev phom sij kev nyab xeeb los ntawm kev tsim qauv rau cov ntaub ntawv nyias nyias.
Hauv cov ntsiab lus, cov khoom siv tshuab ntawm Q345 steel yog koom ib ncig ntawm cov txiaj ntsig lub zog ntawm 345 MPa. Qhov sib npaug ntawm lub zog, ductility, thiab tawv tau ua tiav los ntawm kev tswj cov txheej txheem thiab txheej txheem. Kev ua tau zoo sib txawv hla cov qhab nia zoo thiab cov neeg xaiv tau, thiab cov kev xaiv yuav tsum tau ua kom haum rau cov txheej txheem kev cai lij choj (ntsuas kub) kom ntseeg tau tias kev nyab xeeb thiab kev ntseeg tau.