Molao-motheo oa MIM compaction-A

1. Tlhaloso ea ho theha

Densify phofo hore e be li-compact tse tala tse nang le sebōpeho se itseng, boholo, porosity le matla, mokhoa ona ke ho theha MIM.

2. Bohlokoa ba ho theha

1) Ke ts'ebetso ea motheo ea phofo ea metallurgy eo bohlokoa ba eona e leng ea bobeli feela ho sintering.
2) E thibela ho feta 'me e etsa qeto ea mokhoa oohle oa tlhahiso ea phofo ea metallurgy ho feta mekhoa e meng.
a) Hore na mokhoa oa ho bopa o utloahala kapa che, o etsa qeto ka ho toba hore na o ka tsoela pele hantle.
b) Ama lits'ebetso tse latelang (ho kenyeletsoa le lits'ebetso tse thusang) le boleng ba sehlahisoa sa ho qetela.
c) E ama tlhahiso ea boiketsetso, tlhahiso le litšenyehelo tsa tlhahiso.

Ho etsa compressionke ho kenya phofo ea tšepe kapa motsoako oa phofo ka har'a hlobo ea tšepe ea khatiso (mofuta oa basali), o hatelle phofo ka "polanka ea lefu", 'me ka mor'a hore khatello e fokotsehe, compact e lokolloa hlobo ea basali ho phethahatsa mokhoa oa ho etsa.

Mesebetsi ea mantlha ea compression molding ke:

1. Theha phofo ka sebōpeho se hlokahalang;
2. Fana ka compact e nang le litekanyo tse nepahetseng tsa geometri;
3. Fana ka porosity e hlokahalang le mohlala oa pore ho compact;
4. Fana ka li-compact matla a nepahetseng bakeng sa ho sebetsana habonolo.

Lintho tse etsahalang nakong ea ho kopana ha phofo:

1. Ka mor'a ho hatella, porosity ea 'mele oa phofo e fokotsehile,' me sekhahla se lekanyelitsoeng sa compact se phahame haholo ho feta sa 'mele oa phofo.
The compaction e fokotsa bophahamo ba stacking ea phofo, ka kakaretso compaction e feta 50%

2. Khatello ea Axial (khatello e ntle) e sebelisoa ho 'mele oa phofo.'Mele oa phofo o itšoara joaloka mokelikeli ho isa bohōleng bo itseng.Ha matla a sebelisoa leboteng la hlobo ea basali, ho hlahisoa khatello ea karabelo-lateral.

3. Ha phofo e ntse e kopantsoe, boima ba compact bo eketseha, 'me matla a compact a boetse a eketseha.

4. Ka lebaka la likhohlano pakeng tsa likaroloana tsa phofo, phetisetso ea khatello ha e lekane, 'me boima ba likarolo tse fapaneng ka har'a compact ha bo lekane.Boima bo sa tsitsang ba compact e tala bo na le tšusumetso ea bohlokoa haholo ts'ebetsong ea compact e tala esita le sehlahisoa.

5. Ka mor'a hore khatello e fokotsehe 'me e fokotsoe, boholo ba compact e tala e tla atolosa-ho hlahisa elastic after-effect.Elastic aftereffect ke e 'ngoe ea mabaka a ka sehloohong a ho senyeha le ho phunyeha ha compact.