Cov ntsia hlau loj hauv cov ntoo khaub ncaws decessed recessed recessed ntsia hlau muaj cov hlau loj, thiab cov khoom siv hlau tsis muaj roj stainless Cov ntsia hlau 4.8 sib xyaw yog cov hlau zoo tib yam nrog qhov siab tshaj plaws uas tau tso tseg hardness ntawm 255hv. Phau Ntawv Qhia 8.8 sib xyaw ua ke yog feem ntau ua los ntawm xaim 10B21 Pier, thiab tom qab ntawd nws tawv, thiab tom qab ntawd dehydrogenated tom qab ua kom tawv nqaij.
Hydrogen tshem tawm yog los tiv thaiv hydrogen embrittlement ntawm lub caij nplooj ntoo hlav cua hauv cov screws. Tiv thaiv lub caij nplooj ntoo hlav ntxuav los ntawm kev tawg. Qhov kev ua siab ntev ntawm cov qib ntawm cov screws ua ke yog A. Tus ntoo khaub lig qhov yog H-puab. Cov kev kho deg saum npoo ntawm cov screws ua ke yog ib puag ncig phooj ywg thiab tsis yog ib tug phooj ywg ib puag ncig. Piv txwv li, ib puag ncig xiav xiav zinc, ib puag ncig zoo nkauj zinc, dub zinc, npib dawb, thiab lwm yam. Qhov kev ntxhua khaub ncaws ua ke yuav tsum muaj peev xwm tig tau kom tsis txhob poob.
