Sinter e thatafatsa ho MIM

Sinter Hardening ke Eng?

Sinter harding ke ts'ebetso e hlahisang phetoho ea martensite nakong ea pholileng ea potoloho ea sintering.

Eo ke phekolo ea sintering le mocheso oa lisebelisoa tsa phofo tsa metallurgy li kopantsoe ka mokhoa o le mong, e le hore mokhoa oa tlhahiso ea thepa o atlehe haholoanyane le melemo ea moruo e ntlafatsoa.

Litšobotsi tsa sinter harding:

1) Plastiki ea tšepe e ntlafalitsoe haholo.Nakong e fetileng, li-alloys tse thehiloeng ho nickel tse neng li ka etsoa feela ka ho lahla empa li ke ke tsa etsoa ka ho qhekella li ka boela tsa thehoa ke sinter hardening die forging, kahoo ho atolosa mefuta ea litšepe tse ka khonehang.

2) Ho hanyetsa deformation ea tšepe e nyenyane haholo.Ka kakaretso, khatello e felletseng ea "sinter-hardening die forging" ke karoloana e le 'ngoe feela ho karolo e le 'ngoe ho tse leshome ea tse tloaelehileng tsa die forging.Ka hona, ho ka etsoa lisebelisoa tse kholo ka lisebelisoa tse nang le lithane tse nyane.

3) Ho nepahala ha ts'ebetso e phahameng ea Sintering harding forming process e ka fumana likarolo tse nang le marako a tšesaane ka boholo bo nepahetseng, sebopeho se rarahaneng, sebopeho sa lijo-thollo se ts'oanang, thepa e ts'oanang ea mochini, tumello e nyane ea machining, mme e ka sebelisoa ntle le ho itšeha.Ka hona, ho etsa li-sinter-hardening ke mokhoa o mocha oa ho fihlella ho fokotseha kapa ho se be le ho etsa seha ka nepo.

Mabaka a susumetsang a sinter harding haholo a kenyelletsa:Lintho tse kopanyang, sekhahla sa ho pholisa, letsoalo, litaba tsa khabone.

Sekhahla sa ho pholisa sa sinter harding ke 2 ~ 5 ℃/s, 'me sekhahla sa ho pholisa se potlakile ho lekana ho baka phetoho ea karolo ea martensite ho thepa.Ka hona, ts'ebeliso ea sinter hardening process e ka boloka ts'ebetso e latelang ea carburizing.

Khetho ea Lintho:
Ho thatafatsa sinter ho hloka phofo e khethehileng.Ka kakaretso, ho na le mefuta e 'meli ea lisebelisoa tsa tšepe tse entsoeng ka tšepe, e leng:

1) Phofo e tsoakiloeng ea motsoako, ke hore, phofo e tsoakiloeng e entsoeng ka phofo ea elemental e kopantsoeng le phofo e hloekileng ea tšepe.Metsoako e sebelisoang haholo ea motsoako oa motsoako ke phofo ea graphite, phofo ea koporo le phofo ea nickel.Kalafo e sa fellang kapa sekhomaretsi se ka sebelisoa ho kopanya phofo ea koporo le phofo ea nickel holim'a likaroloana tsa phofo ea tšepe.

2) Ke phofo ea tšepe e tlase e sebelisoang ka ho fetesisa ho sinter harding.Ha ho etsoa li-powders tsena tsa tšepe tse tlaase, lisebelisoa tsa alloying manganese, molybdenum, nickel le chromium lia eketsoa.Ka lebaka la 'nete ea hore lisebelisoa tsa alloying kaofela li qhibiliha ka tšepe, ho thatafala ha thepa hoa eketseha,' me microstructure ea thepa ka mor'a ho sintering e tšoana.