1.Umonakalo womngundo

　　Ngenxa yemisebenzi engaqhelekanga (i-crimping yesibini, njl.njl.) kunye nokugcwala komngundo, umngundo ophezulu kunye nosezantsi wokukrala uneziva okanye uqhekekile. Ke ngoko, ukungakwazi ukukhupha imilo eqhelekileyo kuya kubangela iingxaki ezinkulu njengeebhula. I-Die abnormalities inokufunyanwa ngokuqwalasela indawo ekhubekayo.

　　I-terminal deformation

　　Uluhlu oluvumelekileyo luyahluka ngokuxhomekeke kwi-terminal, kwaye ngokubanzi lungaphakathi ±5°. Itheminali ejijekileyo iya kuvelisa isiphene esifana nokugoba kwecala.

　　2.Terminal deformation

　　Gobela phezulu:

　　Uluhlu oluvumelekileyo luyohluka ngokweetheminali ezahlukeneyo, ngokubanzi ngaphakathi kwe-3°. Iitheminali ezigobe phezulu azinakufakwa kwiqokobhe. Nokuba zinokufakwa, ziyakuphuma kwisikhonkwane kwaye zibangele ukungafihli kakuhle kwelinye icala 1.

　　Gobela phantsi:

　　I-engile evumelekileyo iyahluka noko ngokuxhomekeke kwitheminali, kwaye ingaphakathi jikelele kwi-3°. Iitheminali ezigobe ezantsi azinakufakwa kwiqokobhe, kwaye nokuba iqokobhe linokufakwa, isikhonkwane siya kuphuma, kwaye siya kubangela ukungafihli kakuhle kwelinye icala.