Kodi MIM binder ndi chiyani?

Kusankha zomangira za ufa wa metallurgy,ukadaulo wopangira jakisoni wachitsulondi chopangidwa cha kusakanikirana ndi mphambano ya luso pulasitiki akamaumba, polima chemistry, ufa zitsulo luso ndi zitsulo zipangizo sayansi. Chikombolecho chitha kugwiritsidwa ntchito kupaka jekeseni yopanda kanthu ndikudutsa mu Sintering imatha kutulutsa mwachangu kwambiri, yolondola kwambiri, magawo atatu azithunzi zowoneka bwino. Imatha kusintha mwachangu komanso molondola malingaliro apangidwe kukhala zinthu zokhala ndi mawonekedwe enaake komanso magwiridwe antchito, ndipo imatha kupanga magawo ambiri. Ndikusintha kwatsopano mumakampani opanga ukadaulo.

Zochita za ndondomeko:

Njira luso luso osati ubwino wa ochiritsira ufa zitsulo njira monga masitepe ochepa, palibe kapena zochepa kudula, ndi phindu mkulu zachuma, komanso kugonjetsa zophophonya miyambo miyambo.mankhwala ufa zitsulomonga zipangizo zosagwirizana, zinthu zochepa zamakina, komanso zovuta kupanga makoma owonda komanso zovuta. Ndizoyenera kwambiri kupanga zitsulo zazing'ono, zovuta komanso zapadera. Mayendedwe a ndondomeko: binder → kusakaniza → jekeseni → kupukuta → kupukuta → sintering → pambuyo pokonza.

Ufa wa chitsulo:

The tinthu kukula zitsulo ufa ntchito muChithunzi cha MIMkawirikawiri ndi 0.5 ~ 20μm; Theoretically, ndi bwino particles, ndi yaikulu yeniyeni pamwamba m'dera, kupangitsa kukhala kosavuta kuumba ndi sinter. Njira yachikhalidwe yopangira zitsulo za ufa imagwiritsa ntchito ufa wokulirapo kuposa 40μm.

Mu themetal jekeseni akamaumba MIM, binder amagwira ntchito yofunika kwambiri, imakhudza mwachindunji kusakaniza, jekeseni akamaumba, degreasing ndi njira zina, ndipo zimakhudza kwambiri khalidwe, degreasing ndi dimensional molondola wa zitsulo ufa jekeseni akamaumba opanda kanthu, aloyi zikuchokera, etc. makina, ndiko kuti, amakhala chonyamulira kuyendetsa otaya ufa. Choncho, kusankha binder ndiye chinsinsi pakupanga jekeseni lonse la ufa. Zofunikira pa binder:

• pang'ono, ndiko kuti, kuonetsetsa kuti osakaniza ali bwino rheology pamene ntchito pang'ono binder monga n'kotheka;
• Palibe anachita, mwachitsanzo palibe mankhwala anachita ndi zitsulo ufa;
• Zosavuta kuchotsa, palibe zotsalira muzogulitsa.

Moyo wa binder powder metallurgy MIM ndondomeko, kuwonjezera ndi kuchotsa ndi teknoloji yaikulu ya MIM, ndipo ndondomeko yowonongeka yomwe imagwiritsidwa ntchito mu binder system ndi mutu wofunikira wofufuza kunyumba ndi kunja. Zomangira zomwe zimagwiritsidwa ntchito mu MIM zimaphatikizapo makina a thermoplastic, thermoset systems, makina osungunuka ndi madzi, makina a gel ndi machitidwe apadera, omwe ali ndi ubwino ndi zovuta zake. Thermoplastic binder system ndiye chigawo chachikulu komanso kalambulabwalo wa MIM binder, ndipo anthu amayang'ana kwambiri kuwongolera mphamvu zakudyetsa mbewu, kafukufuku wambiri wachitika kuti achepetse kupindika kwa degreasing ndikufupikitsa nthawi yotsitsa, ndipo othandizira ena apadera kuphatikiza zomangira za polyacetal apangidwa. Koma kafukufuku ndi chitukuko cha zomangira alibe ufa
Kugwirizana, kusanganikirana kwa ufa ndi zomangira, rheological ndi thermodynamic katundu wa zomangira ndi chakudya pansi pa zinthu zosiyanasiyana,Chikoka cha binders pa degreasing ndi katundu katundu amapereka mfundo zonse ndi maziko ongoganiza kusankha omangira, amene mosakayikira wapadera Iwo ali ndi tanthauzo zabwino kwambiri. Kupititsa patsogolo kachitidwe katsopano komanso kogwira mtima komangiriza ndikonso cholinga chaMtengo wa MIM.