Umgomo we-MIM compaction-A

1. Incazelo yokubumba

Gxilisa impushana ibe yizingxube eziluhlaza ezinomumo othize, usayizi, i-porosity namandla, inqubo ukwakhiwa kwe-MIM.

2. Ukubaluleka kokubumba

I-1) Kuyinqubo eyisisekelo ye-powder metallurgy okubaluleka kwayo kungokwesibili ngemuva kokugcoba.
I-2) Ivimbela kakhulu futhi inquma yonke inqubo yokukhiqiza ye-powder metallurgy kunezinye izinqubo.
a) Ukuthi indlela yokwenza inengqondo noma cha inquma ngokuqondile ukuthi ingaqhubeka kahle yini.
b) Ukuthinta izinqubo ezilandelayo (kuhlanganise nezinqubo ezisizayo) kanye nekhwalithi yomkhiqizo wokugcina.
c) Kuthinta ukukhiqiza okuzenzakalelayo, ukukhiqiza kanye nezindleko zokukhiqiza.

Ukubunjwa kokucindezelaukulayisha i-metal powder noma ingxube ye-powder ibe isikhunta sokucindezela insimbi (isikhunta sesifazane), cindezela i-powder ngokusebenzisa i-punch ye-die, futhi ngemva kokuba ingcindezi ikhululiwe, i-compact ikhishwa esikhunjini sesifazane ukuze iqedele inqubo yokwenza.

Imisebenzi eyinhloko ye-compress molding yile:

1. Yakha impushana ibe yisimo esidingekayo;
2. Nikeza okuhlangene ngobukhulu obunembile bejometri;
3. Nikeza i-porosity edingekayo kanye nemodeli ye-pore ku-compact;
4. Nikeza ama-compact amandla afanele okuphatha kalula.

I-Phenomena eyenzeka ngesikhathi sokuhlangana kwe-powder:

1. Ngemuva kokucindezela, i-porosity yomzimba we-powder iyancishiswa, futhi ubukhulu obuhlobene be-compact buphakeme kakhulu kunomzimba we-powder.
I-compaction inciphisa ukuphakama kwe-stacking ye-powder, ngokuvamile i-compaction idlula i-50%

2. Ukucindezela kwe-Axial (ukucindezela okuhle) kusetshenziselwa umzimba we-powder.Umzimba oyimpushana uziphatha njengoketshezi ngokwezinga elithile.Uma amandla esetshenziswa odongeni lwesikhunta sesifazane, i-react force-lateral pressure ikhiqizwa.

3. Njengoba i-powder ihlanganiswe, ukuminyana kwe-compact kuyanda, futhi amandla e-compact nawo ayanda.

4. Ngenxa yokungqubuzana phakathi kwezinhlayiya ze-powder, ukudluliswa kwengcindezi akulingani, futhi ukuminyana kwezingxenye ezihlukene ku-compact azilingani.Ubuningi obungalingani be-compact eluhlaza bunomthelela obaluleke kakhulu ekusebenzeni kwe-compact eluhlaza ngisho nomkhiqizo.

5. Ngemuva kokuthi ingcindezi ikhululiwe futhi idiliziwe, ubukhulu be-compact eluhlaza buzokhula-bukhiqize umphumela wokunwebeka emva komphumela.Umphumela we-Elastic ungenye yezizathu eziyinhloko zokuguquguquka nokuqhekeka kwe-compact.