Gr.6 Gr.3 A333 A334 Ƙarƙashin Ƙarfe Carbon Karfe

Babban Daraja

Darasi na 1, Mataki na 3, Darasi na 4, Mataki na 6, Mataki na 7, Mataki na 8, Mataki na 9, Darasi na 10, Darasi na 11;
Low zazzabi carbon karfe bututu quenching zafin jiki a A3 + (30 ~ 50) ℃, a aikace, yawanci saita zuwa babba iyaka. High quenching zafin jiki zafi bututu iya yin low gudun, surface hadawan abu da iskar shaka rage, kuma zai iya inganta aiki yadda ya dace. The workpiece ne uniform austenite, zai buƙaci isasshen lokacin riƙewa. Idan ainihin ƙarfin wutar lantarki da aka shigar, zai buƙaci ya dace don tsawaita lokacin riƙewa. In ba haka ba, za a iya samun rashin isasshen taurin saboda rashin daidaituwar dumama wanda abin ya haifar. Duk da haka, lokacin riƙewa ya yi tsayi da yawa, zai kuma bayyana ƙananan hatsi, oxidation da decarbonization mai tsanani da ke shafar ingancin quenching. Mun yi imani da cewa idan shigar makera ne mafi girma fiye da tsari takardun, dumama rike lokaci da za a kara 1/5.

Low zafin jiki carbon karfe bututu saboda low hardenability, ya kamata a yi amfani da babban sanyaya kudi na 10% gishiri bayani. Workpiece a cikin ruwa, ya kamata hardenability, amma ba chilled, idan 45 # daidai karfe chilled a brine, yana yiwuwa fatattaka na workpiece, wannan shi ne saboda lokacin da workpiece aka sanyaya zuwa game da 180 ℃, da austenite da sauri tuba zuwa doki s jiki nama lalacewa ta hanyar wuce kima danniya saboda. Saboda haka, lokacin da quenching da tempering karfe da sauri sanyaya zuwa wannan zafin jiki kewayon, ya kamata a dauki tsarin zuwa jinkirin sanyaya.

Kamar yadda yanayin zafin ruwa ke da wuyar fahimta, gwaninta a cikin aiki, lokacin da ruwan ya daina karkatar da kayan tarihi, zaku iya sanyaya ruwa (misali mai sanyaya mai zai iya zama mafi kyau). Bugu da kari, da workpiece a cikin ruwa, dace mataki ya kamata har yanzu zama daidai da lissafi na workpiece, kamar yadda na yau da kullum motsa jiki. Matsakaicin sanyaya mai tsayayye da aiki mai tsayuwa, yana haifar da rashin daidaituwa taurin, damuwa rashin daidaituwa barin babban nakasu na workpiece, har ma da fatattaka.