Lub hauv paus ntsiab lus ntawm MIM compaction-A

1. Kev txhais ntawm kev tsim

Densify hmoov rau hauv ntsuab compacts nrog ib tug tej yam duab, loj, porosity thiab lub zog, txheej txheem yog MIM txoj kev.

2. Qhov tseem ceeb ntawm kev tsim

1) Nws yog txheej txheem hmoov hlau metallurgy uas nws qhov tseem ceeb yog qhov thib ob rau sintering.
2) Nws muaj kev txwv ntau dua thiab txiav txim siab tag nrho cov txheej txheem ntawm cov hmoov metallurgy ntau dua li lwm cov txheej txheem.
a) Txawm hais tias txoj kev tsim qauv tsim nyog lossis tsis ncaj qha txiav txim siab seb nws puas tuaj yeem ua tau zoo.
b) cuam tshuam rau cov txheej txheem tom ntej (nrog rau cov txheej txheem pabcuam) thiab qhov zoo ntawm cov khoom kawg.
c) cuam tshuam rau kev tsim khoom automation, kev tsim khoom thiab cov nqi tsim khoom.

Compression moldingyog thauj cov hmoov hlau los yog hmoov sib tov rau hauv cov hlau xovxwm pwm (poj niam pwm), nias cov hmoov los ntawm cov punch tuag, thiab tom qab lub siab txo qis, lub compact yog tso tawm ntawm cov poj niam pwm kom tiav cov txheej txheem tsim.

Lub luag haujlwm tseem ceeb ntawm compression molding yog:

1. Ua cov hmoov rau hauv cov duab uas yuav tsum tau ua;
2. Muab lub compact nrog meej geometric qhov ntev;
3. Muab qhov xav tau porosity thiab pore qauv rau lub compact;
4. Muab cov compacts kom muaj zog kom yooj yim tuav.

Phenomena uas tshwm sim thaum hmoov compaction:

1. Tom qab nias, lub porosity ntawm hmoov lub cev yog txo, thiab tus txheeb ze ntom ntom ntawm lub compact yog ho siab dua li ntawm cov hmoov lub cev.
Lub compaction txo cov stacking qhov siab ntawm cov hmoov, feem ntau cov compaction tshaj 50%

2. Axial siab (zoo siab) yog siv rau lub cev hmoov.Lub cev hmoov coj zoo li cov kua dej rau qee yam.Thaum ib tug quab yuam siv rau cov poj niam pwm phab ntsa, cov tshuaj tiv thaiv quab yuam-lateral siab yog generated.

3. Raws li cov hmoov yog compacted, qhov ceev ntawm lub compact nce, thiab lub zog ntawm lub compact kuj nce.

4. Vim muaj kev sib txhuam ntawm cov hmoov nplej, lub siab sib kis tsis sib xws, thiab qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txuam tsis sib xws.Qhov tsis sib xws ntawm cov ntsuab compact muaj qhov tseem ceeb heev ntawm kev ua haujlwm ntawm ntsuab compact thiab txawm tias cov khoom.

5. Tom qab lub siab yog relieved thiab demoulded, qhov luaj li cas ntawm ntsuab compact yuav nthuav-ua elastic tom qab-tshuaj.Elastic aftereffect yog ib qho ntawm cov laj thawj tseem ceeb rau deformation thiab tawg ntawm lub compact.