Ngowuphi umahluko ophambili phakathi kokwaphuka kwe-corrosion fatigue fracture kunye noxinzelelo lwe-corrosion fracture yombhobho wokubhoboza?

I. Ukuqaliswa kwee-crack kunye nokwandiswa: Iintanda ze-corrosion yoxinzelelo kunye neentanda zokudinwa kwe-corrosion zonke zithunyelwa kumphezulu wemathiriyeli. Ngaphantsi kwemithombo yeendaba ezonakalisayo kunye neemeko ezinkulu zoxinzelelo, uxinzelelo lwe-corrosion cracking lunokuthi lwenzeke kwiindawo ezigudileyo (kwaye ngokuqinisekileyo kugxininiso loxinzelelo), kunye nokuqhekeka kokudinwa kubangelwa kukugxininiswa koxinzelelo ngaphandle kokukhetha.

2. Ubudlelwane phakathi kwesantya sokwandiswa kwe-subcritical of crack kunye ne-stress advisory factor kunye ne-frequency: Isantya sokukhula kwe-corrosion fatigue crack ichaphazeleka ngokuphindaphindiweyo. Nangona kunjalo, kwiimeko ezininzi, i-stress intensite factor ilawulwa. Uxinzelelo lwe-corrosion cracking yahlukile, ubukhulu becala kulawulwa ixesha.

3. Ubume bokwaphuka: Ukwandiswa kwesantya esingaqhelekanga soxinzelelo lwesantya sokuqhekeka kweentanda ngokuqhelekileyo kurhabaxa kunokwaphuka kokudinwa kukudinwa, kwaye akukho patheni yokubhoboza ekudinwa okukhukulisekayo. _

Umbhobho we-drill yinxalenye ebalulekileyo yentambo yokubhoboza. Umsebenzi wayo ophambili kukuhambisa i-torque kunye nokuthutha ulwelo lokomba, kwaye iqula linzulu ngokwandisa ngokuthe ngcembe umbhobho wokubhobhoza. Ngoko ke, i-drill pipe idlala indima ebalulekileyo ekubhobhozeni ioli.