Sinter hardening a cikin MIM

Menene Sinter Hardening?

Sinter hardening wani tsari ne wanda ke samar da sauyi na martensite a lokacin lokacin sanyi na zagayowar sintering.

Wato ƙwanƙwasa da zafi na kayan ƙarfe na foda an haɗa su cikin tsari guda ɗaya, ta yadda tsarin samar da kayan ya fi inganci kuma an inganta fa'idodin tattalin arziki.

Halayen hardening sinter:

1) Ƙarfe filastik yana inganta sosai.A da, allunan da ke tushen nickel waɗanda kawai za a iya yin su ta hanyar simintin gyare-gyare amma ba za a iya yin su ta hanyar ƙirƙira ba kuma ana iya yin su ta hanyar sinter hardening die ƙirƙira, ta haka ne za a faɗaɗa nau'ikan nau'ikan nau'ikan karafa.

2) Juriya na nakasar karfe kadan ne.Gabaɗaya, jimillar matsi na ƙirƙirawar ƙirƙira mai ƙirƙira mutuƙar ƙirƙira shine kashi ɗaya kawai zuwa kashi ɗaya cikin goma na na yau da kullun.Saboda haka, za a iya yin ƙirƙira mafi girma a kan kayan aiki tare da ƙananan ton.

3) High aiki daidaito Sintering hardening kafa aiki iya samun bakin ciki-karo sassa tare da daidai size, hadaddun siffar, uniform tsarin hatsi, uniform inji Properties, kananan machining izni, kuma za a iya amfani ko da ba tare da yankan.Saboda haka, sinter-hardening forming wata sabuwar hanya ce don cimma ƙasa da ƙasa ko babu yankewa da daidaitaccen tsari.

Abubuwan da ke tasiri na hardening sinter musamman sun haɗa da:Abubuwan haɗin gwiwa, ƙimar sanyaya, yawa, abun ciki na carbon.

The sanyaya kudi na sinter hardening ne 2 ~ 5 ℃ / s, da sanyaya kudi ne quite sauri isa ya sa martensite lokaci canji a cikin kayan.Sabili da haka, yin amfani da tsarin hardening na sinter zai iya ceton tsarin carburizing na gaba.

Zaɓin kayan aiki:
Sinter hardening yana buƙatar foda na musamman.Gabaɗaya, akwai nau'ikan kayan ƙarfe na ƙarfe na tushen ƙarfe, wato:

1) Gauraye foda, wato gauraye foda wanda aka hada da elemental foda wanda aka hada da tsantsar hoda.Abubuwan da aka fi amfani da su na alloying foda sune graphite foda, foda na jan karfe da nickel foda.Za'a iya amfani da ɓangaren yaduwa ko maganin mannewa don haɗa foda na jan karfe da foda nickel akan barbashi foda na ƙarfe.

2) Shi ne mafi yadu amfani low gami karfe foda a sinter hardening.A cikin shirye-shiryen waɗannan ƙananan foda na ƙarfe, an ƙara abubuwan da suka haɗa da manganese, molybdenum, nickel da chromium.Dangane da gaskiyar cewa abubuwan da aka haɗa su duka suna narkar da baƙin ƙarfe, ƙarfin ƙarfin abu yana ƙaruwa, kuma microstructure na kayan bayan sintering shine uniform.