Ƙunƙwasa Ƙarawa

Ƙunƙwasa Ƙarawa tsari ne na dumama wanda ke biye da sanyaya gabaɗaya da sauri don haɓaka taurin ƙarfi da ƙarfin injin ƙarfe.

Don wannan karshen, karfe yana mai tsanani zuwa zafin jiki dan kadan sama da babba mai mahimmanci (tsakanin 850-900ºC) sannan kuma ya sanyaya fiye ko žasa da sauri (dangane da halaye na karfe) a cikin matsakaici kamar man fetur, iska, ruwa, ruwa. gauraye da polymers masu narkewa, da dai sauransu.

Akwai hanyoyi daban-daban don dumama kamar tanderun lantarki, tukunyar gas, gishiri, harshen wuta, shigarwa, da dai sauransu.

Karfe da aka saba amfani da shi wajen tauraruwar shigar da kara sun kunshi daga 0.3% zuwa 0.7% carbon (karfe na hypoeutectic).

Ƙarƙashin ƙarewa fa'ida:

• Yana kula da takamaiman yanki na yanki (taurin bayanin martaba)
• Kula da mitoci da lokutan dumama
• Ikon sanyaya
• Adana makamashi
• Babu lamba ta jiki
• Sarrafa da wurin zafi
• Ana iya haɗawa a cikin layin samarwa
• Ƙara aiki da adana sarari

Induction hardening za a iya yi ta hanyoyi biyu daban-daban:

• Tsaye: ya ƙunshi saita sashin a gaban inductor da aiwatar da aikin ba tare da motsa sashin ko inductor ba. Wannan nau'in aiki yana da sauri sosai, yana buƙatar injiniyoyi masu sauƙi kawai kuma yana ba da damar daidaitaccen yanki na wurin da aka jiyya, har ma da sassa masu rikitarwa.

• Ci gaba (ta hanyar dubawa): ya ƙunshi wuce sashin tare da ci gaba da aiki, motsi ko dai ɓangaren ko inductor. Irin wannan aiki yana nufin cewa za a iya kula da sassan da manyan filaye da manyan girma.

Don nau'in nau'in sashi iri ɗaya maganin dubawa yana buƙatar ƙarancin ƙarfi tare da tsawon lokacin jiyya kwatankwacin jiyya a tsaye.

Induction Tempering

Induction Tempering wani tsari ne wanda zai iya rage taurin, ƙarfi kuma yana ƙara ƙarfin ƙarfe mai ƙarfi, yayin da yake kawar da tashin hankali da aka haifar a cikin haikalin, yana barin ƙarfe tare da taurin da ake bukata.

Tsarin zafin jiki na gargajiya ya ƙunshi dumama sassan a ƙananan yanayin zafi (daga 150ºC zuwa 500 ° C, koyaushe a ƙasa da layinAC1) na ɗan lokaci sannan a bar su suyi sanyi a hankali.

Indoction dumama ab .buwan amfãni:

• Ƙananan lokuta a cikin tsari
• Maganin yanayin zafi
• Haɗin kai a cikin layin samarwa
• Adana makamashi
• Samuwar sassa kai tsaye
• Ajiye sarari
• Ingantattun yanayin muhalli

Tsarin hardening da tempering magani ne ga sassa daban-daban a yawancin sassan masana'antu.