Ka'idar ƙaddamarwar MIM-A

1. Ma'anar kafawa

Densify foda zuwa koren compacts tare da takamaiman sifa, girman, porosity da ƙarfi, tsarin shine ƙirƙirar MIM.

2. Muhimmancin kafawa

1) Yana da wani asali foda metallurgy tsari wanda muhimmancin shi ne na biyu kawai ga sintering.
2) Ya fi ƙuntatawa kuma yana ƙayyade duk tsarin samar da ƙwayar foda fiye da sauran matakai.
a) Ko hanyar kafa ta tana da ma'ana ko a'a kai tsaye yana ƙayyade ko za ta iya ci gaba cikin sauƙi.
b) Tasiri matakai na gaba (ciki har da matakan taimako) da ingancin samfurin ƙarshe.
c) Tasirin samar da aiki da kai, yawan aiki da farashin samarwa.

Matsi gyare-gyareshi ne a ɗora foda na ƙarfe ko cakuda foda a cikin injin daskarewa na karfe (mace na mace), sai a danna foda ta cikin nau'in mutu, kuma bayan an sauke matsi, an saki karamin daga jikin mace don kammala aikin.

Babban ayyuka na matsawa gyare-gyaren su ne:

1. Samar da foda a cikin siffar da ake bukata;
2. Ba da ƙaƙƙarfan tare da madaidaicin ma'auni na geometric;
3. Ba da porosity da ake buƙata da samfurin pore ga m;
4. Ba wa ƙaƙƙarfan ƙarfi da ya dace don sauƙin sarrafawa.

Abubuwan al'ajabi da ke faruwa a lokacin damfarar foda:

1. Bayan dannawa, an rage porosity na jikin foda, kuma ma'auni na dangi yana da mahimmanci fiye da na jikin foda.
Ƙunƙarar yana rage tsayin daka na foda, gabaɗaya ƙaddamarwa ya wuce 50%

2. Ana amfani da matsa lamba axial (matsi mai kyau) zuwa jikin foda.Jikin foda yana aiki kamar ruwa zuwa wani wuri.Lokacin da aka yi amfani da karfi a bangon ƙirar mata, ana haifar da matsin lamba na ƙarfi.

3. Yayin da foda ya cika, yawan ƙwayar ƙwayar cuta yana ƙaruwa, kuma ƙarfin ƙarfin yana ƙaruwa.

4. Saboda rikice-rikice tsakanin ƙwayoyin foda, watsawar matsa lamba ba daidai ba ne, kuma yawancin sassa daban-daban a cikin m ba daidai ba ne.Rashin daidaituwar ƙarancin ƙarancin kore yana da tasiri mai mahimmanci akan aikin ƙaramin kore har ma da samfurin.

5. Bayan an sauke matsa lamba kuma an rushe shi, girman girman koren kore zai fadada-samar da sakamako na roba.Sakamakon na roba yana ɗaya daga cikin manyan dalilan da ke haifar da nakasu da fashewar ƙaramin abu.