I-self-drilling screw yinxalenye yesiseko soomatshini, efunwa kakhulu. Ngokuqhelekileyo, iibholiti, izikrufu, iirivethi, njl., ukwenzela ukuba kuqinisekiswe ukhuseleko okanye ngokuqhelekileyo akufuneki ukuba kuqwalaselwe impembelelo yobushushu, indawo embi okanye ezinye iimeko zokusebenza eziyingozi. Izinto eziqhelekileyo ziyi-carbon steel, i-alloy iron ephantsi kunye neensimbi ezingenayo i-ferrous. Kodwa kwiimeko ezithile, izinto zokubopha kufuneka zihlangabezane neemeko zomhlwa obukhali okanye ukomelela okuphezulu, zininzi intsimbi engatyiwayo kunye nentsimbi ephezulu eqinileyo evele yavela. Ezi ngxaki zilandelayo zintandathu kufuneka zinikwe ingqwalasela xa usebenzisa kwaye ugcina intambo yomsila wokomba:
1. Inkqubo yokuhlanjululwa kwentambo yomsila wokugaya ingxamiseke kakhulu kwaye kufuneka ilumke kakhulu. Ngexesha lenkqubo, kuya kubakho iintsalela phezu komphezulu wocingo lomsila wokugaya. Eli nyathelo kukuhlamba emva kokuba isicoci se-silicate sihlanjiwe.
2. Ngethuba lenkqubo yokufudumala, i-stack kufuneka idibaniswe, ngaphandle koko i-oxidation encinci iya kwenzeka kwioli yokucima.
3. Iintsalela ze-phosphide ezimhlophe ziya kubonakala kumphezulu we-screws ephezulu, ebonisa (inqaku le-1) ukuba ukuhlolwa akuqapheli ngokwaneleyo ngexesha lokusebenza. 4. I-blackening phenomenon ebusweni bamacandelo ivelisa ukusetyenziswa kweekhemikhali reverse, ebonisa ukuba unyango lobushushu alwenziwanga ngokucokisekileyo kwaye i-alkaline eseleyo phezu komhlaba ayizange isuswe ngokupheleleyo.
5. Iindawo eziqhelekileyo ziya kuhlwa kwindawo yokuhlamba, kwaye amanzi asetyenziselwa ukuhlanjululwa kufuneka atshintshwe rhoqo.
6. Ukugqithisa okugqithisileyo kubonisa ukuba ioli yokucima isetyenziswe ixesha elide, kwaye kufuneka ifakwe okanye ifakwe endaweni.