Kafin hot-rolled karfe coils da aka ruwaito daga niƙa mai zafi rolling a cikin niƙa mai sanyi, pickling hanya ce ta yau da kullun, da kuma ƙwanƙwasa mai ɗorewa. Idan tsiri karfe tare da sikelin da aka birgima kai tsaye, abubuwa masu zuwa dole ne su faru:
(1) Mirgiri a karkashin yanayin raguwa zai danna sikelin baki a cikin matrix na ɗumbin takarda, har ma yana lalata sharar gida.
(2) Bayan sikelin oxide oxide ya karye, yana shiga sanyaya da sanya tsarin emulsion, wanda zai lalata kayan wurare dabam dabam da kuma rage kayan wurare dabam dabam da kuma rage kayan aikin emulsion;
(3) Lalacewa farfajiya ta ƙasa sosai, mai tsada sanyi mirgine Mix.
Sabili da haka, kafin a mirgine sanyi, tanki mai zina dole ne a sanye da dumama mai dumama don cire sikelin baki a saman tsiri kuma cire tsiri.
Koyaya, tsarin tattarawa da aka yi amfani da shi a halin yanzu don cire lokacin farin ciki a farfajiya bakin karfe yana da babban aiki zazzabi da lokacin aiki mai tsawo. Farawa daga hanyar dumama, tanki tating dumama Streat Generorator ana amfani dashi don yin amfani da mafita da kuma farashin aiki, kuma yana haifar da ƙarancin zafi-birgima tsayayyen tsari.