1. Beryllium oxide:Beryllium oxide ba wai kawai ya yi hasarar ƙarfe mai yawa ba, amma har ma yana rage ingancin kayan ƙirƙira da rayuwar sabis.mutuƙar ƙirƙira.Idan an danna cikin karfe, daƙirƙiraza a soke.Rashin cire beryllium oxide zai shafi tsarin juyawa.
2. Rarraba:Decarburization yana nufin abin da ya faru cewa duk ko ɓangaren carbon da ke saman karfe yana ƙonewa.Decarburization yana sa saman kayan aikin ya bayyana aibobi masu laushi, rage taurin saman, juriya da ƙarfin gajiya.
3. Zafi da yawan zafi:Overheat yana nufin karfe a cikin dumama fiye da yadda aka yarda zafin jiki, don haka da hatsi girma na m.Ƙunƙarar zafi ba ta da amfani ga maganin zafi, don haka ƙirƙira ta zama raguwa kuma an rage kayan aikin injiniya, amma ana iya kawar da su ta hanyar daidaitawa ko annealing bayan.ƙirƙira.Konewa yana nufin al'amarin na oxides ko narkewar karafa na wani bangare saboda lokacin dumama ya yi tsayi da yawa kuma zafin jiki ya yi yawa.Zazzaɓin ba za a iya gyara ba.

4. Damuwa:saboda bambancin da ke tsakanin ciki da waje na karfe, fadada ba ta dace ba, kuma ana haifar da damuwa na ciki, wanda ake kira thermal stress.Canje-canjen tsarin ƙarfe na ƙarfe wanda dumama ya haifar kuma yana haifar da damuwa, wanda ake kira damuwa microstructure.Wannan zai sa workpiece a cikin dumama fasa, haifar da workpiece bayan da mota sarrafa fasa da kuma guntu.
5. Karaya a sashin giciye:wannan lahani yana lalata tsarin sinadarai da daidaituwar microstructure na karfe, yana rage taurin quenching kuma yana lalata kaddarorin inji.Idan zafin zafin jiki ya yi yawa kuma yana haifar da sashin graphite, ba zai zama da sauƙi a yanke da kashe zafi da nakasawa ba.Amma idan annealing a karkashin zafi ko low zafin jiki, pearlite ba zai iya kammala duniya, shi ne ba m ga yankan da kuma m zafi magani.
6. Karfe mai kauri da karye: yana raunana ƙarfin haɗin kai tsakanin kayan kristal, kayan aikin injiniya ya fi muni sosai, musamman ma tasirin tasirin ya ragu, amma ana iya ingantawa ko kawar da shi ta hanyar daidaitawa.Idan akwai banded carbide, zai sa taurin da tsarin quenching da tempering m, da kuma sauki nakasawa, wanda kuma shi ne aibi na banded tsarin pearlite da ferrite tare da jagorancin nakasawa.A lokaci guda, zai kuma rage filastik da taurin karfe, don haka girman mashin ɗin ba shi da kwanciyar hankali, saurin lalacewa na kayan aiki.