Cov cua txias ceev ceev ntawm cov weld ntawm qhov kub qis yuav ua rau kom muaj kev sib cais hauv cheeb tsam ntawm cov weld crystallisation. Nyob rau hauv kev ntxhov siab, crystalline kab nrib pleb tshwm nyob rau hauv nruab nrab ntawm lub weld.
Cov nyhuv qeeb ntawm qhov txias cracking nce. Thaum lub sij hawm txias txheej txheem ntawm weld, lub dissolution tus nqi ntawm dawb hydrogen txo, lub sij hawm rau hydrogen kom dim yuav luv luv, thiab cov cua txias yuav sai sai, yog li cov seem hydrogen cov ntsiab lus nyob rau hauv cov hlau nce, uas ua rau kom lub siab ntawm txias cracking.
Qhov muaj peev xwm ntawm brittle fracture ntawm qis kub nce.
Cov nyhuv preheating yuav tshwm sim nyob rau hauv qhov kub thiab txias, cov nyhuv ntawm qhov kub thiab txias tsis zoo li nyob rau hauv chav tsev kub, thiab nws yog ib qho nyuaj rau tswj qhov kub ntawm cov khaubncaws sab nraud povtseg ntawm weld.
Thaum qhov kub thiab txias, qhov chaw tsim kho yuav nyuaj dua thiab hnyav, ua rau muaj teeb meem tsis tuaj yeem tswj tau.
- Tsawg kub vuam siv ntsuas
1. Ib puag ncig
Qhov ib puag ncig rau qhov kub tsis tshua muaj vuam yog {{0}} ~ 0 degree Celsius, thiab qhov vuam ua haujlwm tau nres thaum nws qis dua -15 degree Celsius.
Vuam yuav tsum tau nqa tawm ntawm chav tsev kub, thaum qhov chaw tsis ncav cuag, yuav tsum tau teeb tsa thermal rwb thaiv tsev los xyuas kom meej tias qhov kub thiab txias tuaj yeem ua tau raws li qhov xav tau ntawm vuam.
Thaum ua hauj lwm hauv cua thiab daus, cov khoom siv tiv thaiv cua thiab daus yuav tsum tau teeb tsa los tiv thaiv qhov vuam hauv zos.
Txhim khu kev soj ntsuam ib puag ncig, thaum huab cua tsis zoo, nres vuam ua haujlwm hauv lub sijhawm kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm.
Sim xaiv lub sijhawm ntawm lub hnub thaum qhov kub thiab txias yog qhov siab tshaj plaws los ua haujlwm vuam, txhawm rau txo qhov nyuaj ntawm kev ua haujlwm vuam.
2. Kev tswj cov khoom siv vuam
Xyuas seb lub vuam hlau puas zoo ua ntej siv thiab ua cov ntsuas dej tsis zoo.
nruj me ntsis tswj cov roj tiv thaiv, purity ntawm kev tiv thaiv roj tsis tsawg tshaj li 99.5%. Nyob rau hauv qhov kub thiab txias ib puag ncig, xyuas seb lub qhov ncauj ntawm lub tog raj kheej yog thaiv los yog khov kom ntseeg tau tias siv cov roj tiv thaiv kom du thiab ruaj khov.
