Molweni, bahlobo! Siyingcaliabenzi zentsimbi engumgubo eTshayina. Sinezinto ezininzipowder metallurgy sintering yamacandelo. Njengomenzi wesinyithi womgubo, ndiza kukuxelela indlela yokufaka inkqubo kwi-powder metallurgy!
Inkqubo ye-Sintering kwi-powder metallurgyifumana uthotho lotshintsho lwenyama kunye neekhemikhali, ezinje ngamanzi okanye i-organic evaporation okanye i-volatilization, i-adsorption gas purging, ukupheliswa koxinzelelo, i-pore particle surface reduction, imfuduko ye-intergranular material, i-recrystallization kunye nokukhula kweenkozo, ngaloo ndlela yenza ujongano lwekristale phakathi kwamasuntswana ayanda, i-pore iyancipha okanye iphele. 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 le-sintering 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 komphezulu. Xa amasuntswana amabini angqukuva anxibelelana adityanisiwe, ukukhula kweradiyasi yentamo yoqhagamshelwano X kunokunxulumana nexesha le-sintering ngolu hlobo lulandelayo:
Inkqubo ye-Sintering I-Sintering kufuneka iqhutywe kwisithando somlilo kunye nomoya 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-atmosphere 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, ukucutshungulwa komatshini, unyango lobushushu kunye nezinye iinkqubo ezilandelayo.
Isitofu sokubumba inkqubo yokuhamba
Ixesha lokuposa: Jul-29-2022