Sinter kuumitsa mu MIM

Kodi Sinter Harding ndi chiyani?

Sinter harding ndi njira yomwe imapanga kusintha kwa martensite panthawi yozizira ya sintering cycle.

Ndiwo sintering ndi kutentha mankhwala a ufa zitsulo zipangizo amaphatikizidwa mu ndondomeko imodzi, kuti ndondomeko kupanga zinthu ndi zothandiza kwambiri ndi phindu chuma bwino.

Makhalidwe a sinter harding:

1) Chitsulo chachitsulo chimakhala bwino kwambiri.M'mbuyomu, ma aloyi opangidwa ndi nickel omwe amatha kupangidwa ndi kuponyera koma osapangidwa ndi kufota amathanso kupangidwa ndi sinter hardening die forging, motero kukulitsa mitundu yazitsulo zopukutika.

2) Kukaniza mapindikidwe achitsulo ndi kochepa kwambiri.Nthawi zambiri, kukakamiza konse kwa sinter-hardening die forging ndi gawo limodzi lokha mpaka gawo limodzi mwa magawo khumi lazomwe zimapangidwira wamba.Chifukwa chake, kupangira zida zazikulu kumatha kupangidwa pazida zokhala ndi matani ang'onoang'ono.

3) High processing olondola Sintering kuumitsa kupanga processing akhoza kupeza mbali woonda-mipanda ndi kukula yeniyeni, mawonekedwe ovuta, yunifolomu njere dongosolo, yunifolomu makina katundu, ang'onoang'ono Machining chilolezo, ndipo angagwiritsidwe ntchito ngakhale popanda kudula.Chifukwa chake, kupanga sinter-hardening ndi njira yatsopano yopezera zochepa kapena zosawerengeka komanso kupanga molondola.

Zomwe zimayambitsa kuuma kwa sinter makamaka ndizo:Alloying zinthu, kuzirala, kachulukidwe, carbon content.

Kuzizira kwa sinter kuumitsa ndi 2 ~ 5 ℃ / s, ndipo kuzizira kumathamanga kwambiri kuti apangitse kusintha kwa gawo la martensite muzinthu.Chifukwa chake, kugwiritsa ntchito njira yowumitsa sinter kumatha kupulumutsa njira yotsatira ya carburizing.

Zosankha:
Sinter kuumitsa kumafuna ufa wapadera.Nthawi zambiri, pali mitundu iwiri yazitsulo zopangidwa ndi chitsulo, zomwe ndi:

1) ufa wosakanizidwa wa elemental, ndiye kuti, ufa wosakanizika wopangidwa ndi ufa woyambira wosakanizidwa ndi ufa wachitsulo.Zomwe zimagwiritsidwa ntchito kwambiri ndi ufa wa graphite, ufa wamkuwa ndi ufa wa faifi tambala.Kusakaniza pang'ono kapena zomatira kungagwiritsidwe ntchito kulumikiza ufa wamkuwa ndi faifi tambala pa tinthu tating'ono tachitsulo.

2) Ndiwogwiritsidwa ntchito kwambiri otsika aloyi zitsulo ufa mu sinter kuumitsa.Pokonzekera zitsulo zazitsulo zotsika, zowonjezera manganese, molybdenum, nickel ndi chromium zimawonjezeredwa.Poganizira kuti zinthu zomwe zimapangidwira zimasungunuka muchitsulo, kuuma kwa zinthuzo kumawonjezeka, ndipo microstructure yazinthu pambuyo pa sintering ndi yofanana.