injani inkqubo ye-sintering kwi-powder metallurgy

Molweni, bahlobo! Siyingcaliabenzi zentsimbi engumgubo eTshayina.Sinezinto ezininzipowder metallurgy sintering yamacandelo.Okulandelayo ndiza kukuxelela indlela yokufaka inkqubo kwi-powder metallurgy!

 Inkqubo ye-Sintering kwi-powder metallurgyifumana uthotho lotshintsho lomzimba kunye neekhemikhali, ezinje ngamanzi okanye ukuguquka kwezinto eziphilayo, ukuhlanjululwa kwegesi ye-adsorption, ukupheliswa koxinzelelo, ukuncipha kwesuntswana le-powder surface oxide, ukufuduka kwezinto ezingaphakathi kwegranular, ukumiliselwa kwakhona kwekristale kunye nokukhula kweenkozo, oko kwenza ujongano lwekristale phakathi kwamasuntswana anyuke. , umngxuma uyashwabana okanye uphele.Xa isigaba solwelo sibonakala, ukuchithwa kunye nemvula yesigaba esiqinileyo kuya kwenzeka.Ezi nkqubo azinayo imida ecacileyo enye kwenye, kodwa ziyadibana kwaye zinempembelelo enye kwenye.Ukongeza kokunye ukuntywila kwi-metallurgy, ukusabela kweemveliso zonke ezenziwe ngumgubo we-metallurgy kunzima.Kwi-1942, i-German GF Schutig yasebenzisa iindlela zophando lomzimba kunye neekhemikhali ukulinganisa impembelelo yokushisa kwe-sintering kumandla ombane we-electromotive, ukunyibilika, ukuxinana, i-microstructure, i-mechanical properties of sintered body, kwaye yafumanisa ukuba i-sintering yinkqubo enzima kakhulu.Ngo-1949, uGCKuczynski wase-United States wafunda ukucwiliswa kweebhola zentsimbi kunye neepleyiti zentsimbi kwaye wayekholelwa ukuba ukufuduka kwezinto ngexesha lokucoca kwakuqhutywa ngokusasazwa.Umsebenzi wabo uqhubele phambili isifundo sethiyori ye-sintering kwinqanaba elitsha.Uninzi lomsebenzi wophando olulandelayo lugxininise kwindlela yokufuduka kwezinto ngexesha le-sintering.

Ngokuqhelekileyo kukholeleka ukuba kukho iindlela ezintlanu zokufuduka kwezinto ngexesha le-sintering: i-viscous okanye iplastiki ehambayo, i-evaporation kunye ne-condensation, ukusabalalisa umthamo, ukusasazwa komda weenkozo, kunye nokusasazwa komhlaba.Xa amasuntswana amabini angqukuva anxibelelana esenziwa sintered, ukukhula kweradiyasi yentamo yoqhagamshelwano X kunokunxulumana nexesha le-sintering ngolu hlobo lulandelayo:

Inkqubo ye-Sintering I-Sintering kufuneka iqhutywe kwisithando somlilo esinomoya okhuselayo ukuphepha i-oxidation ye-sintered body okanye ukusabela okubi kweekhemikhali.Zininzi iintlobo zeziko lokutshisa, ezinokusetyenziswa njengemithombo yobushushu efana nerhasi yendalo, irhasi, ioyile kunye nombane.Isithando somlilo sombane sinoqoqosho kwaye sikulungele, kulula ukulungelelanisa nokulawula.I-atmospheric yokukhusela esetyenziswa ngokuqhelekileyo i-vacuum, i-argon, i-helium, i-nitrogen, i-carbon dioxide kunye nezinye iigesi ze-inert kunye ne-hydrogen, ukubola kwe-ammonia, i-carbon monoxide, ukuguqulwa kwegesi yendalo kunye nezinye iigesi zokunciphisa.

Ukuze kuphuculwe ngakumbi ukusebenza kweemveliso ze-sintered kunye nobukhulu kunye nokuchaneka kobume, kudla ngokuba yimfuneko ukwenza ukubunjwa, ukugqiba, ukunyanzeliswa, ukucwiliswa kweoli, ukuqhutyelwa komatshini, unyango lobushushu kunye nezinye iinkqubo ezilandelayo.

Isitofu sokubumba inkqubo yokuhamba

 

inkqubo ye-sintering kwi-powder metallurgy


Ixesha lokuposa: Jul-29-2022