Welding Properties na daban-daban jan karfe gami

Welding Properties na daban-dabangami da jan karfe:

1. Thermal watsin jan jan ne high.Matsakaicin zafin jiki na jan jan karfe a zafin daki yana da girma kusan sau 8 fiye da na carbon karfe.Yana da wahala a ɗumamar walda tagulla a cikin gida zuwa zafin narke.Saboda haka, ya kamata a yi amfani da tushen zafi tare da makamashi mai mahimmanci yayin walda.Kararrawa sau da yawa suna faruwa lokacin da aka yi waldi na jan karfe da tagulla.Ana samun fashe-fashe a cikin walda, layukan haɗaka da yankunan da zafi ya shafa.Fasassun suna lalacewa ta hanyar intergranular, kuma ana iya ganin launin iskar shaka na zahiri daga sashin giciye.A lokacin aikin walda, gano iskar oxygen da jan ƙarfe suna samar da Cu2O, kuma su samar da eutectic mai ƙarancin narkewa (α+Cu2O) tare da jan karfe α, kuma wurin narkewar shine 1064°C.

2. Gubar ba ta iya narkewa a cikin tagulla mai ƙarfi, kuma gubar da tagulla sun zama ƙaramin narkewar eutectic tare da narkewar kusan 326°C.A karkashin aikin walda ciki danniya, jan karfe da kuma jan karfe gami gidajen abinci a high zazzabi form fasa a cikin m sassa na welded gidajen abinci.Bugu da ƙari, hydrogen a cikin walda kuma yana iya haifar da fasa.Porosity sau da yawa yana faruwa a cikin welds na jan karfe da na jan karfe.Rashin ƙarfi a cikin tsantsar ƙarfen walda na tagulla yana faruwa ne ta hanyar iskar hydrogen gas.Lokacin da aka narkar da CO gas a cikin tagulla mai tsafta, ana iya haifar da pores ta hanyar tururin ruwa da iskar CO2 da aka haifar ta hanyar amsawar carbon monoxide da oxygen.

3. A porosity samuwar hali na jan karfe gami waldi ne da yawa girma fiye da na m jan karfe.Gabaɗaya, ana rarraba pores a tsakiyar walda kuma kusa da layin fusion.Lokacin da tsantsar jan ƙarfe da tagulla suna waldawa, kayan aikin haɗin gwiwa suna raguwa.A cikin tsarin walda na tagulla na jan karfe, oxidation na jan karfe, da zubar da kona abubuwan gami zasu faru.Ƙananan narkewa eutectic da lahani daban-daban na walda suna haifar da raguwar ƙarfin, filastik, juriya na lalata da lantarki na haɗin gwiwar welded.