IVacuum Sintering yeeMveliso zeTungsten Carbide

I-vacuum sintering ithetha ukuba umgubo, i-powder compacts, okanye ezinye iintlobo zemathiriyeli zifudunyezwa kwiqondo lobushushu elifanelekileyo kwindawo yokucoca ukuphumeza ukudibanisa phakathi kwamasuntswana ngokufuduka kwe-athomu. I-Sintering kukwenza i-porous powder compacts ene-alloys enezakhiwo ezithile kunye neempawu.

I-samente ye-carbide vacuum sintering yinkqubo yokuntywila phantsi kwe-101325Pa. I-Sintering phantsi kweemeko ze-vacuum kunciphisa kakhulu umphumo wokuthintela igesi ye-adsorbed kwi-powder surface kunye negesi kwi-pores evaliweyo ekuxininiseni. I-Sintering iluncedo kwinkqubo yokusasazwa kunye noxinaniso kwaye inokuphepha ukusabela phakathi kwesinyithi kunye nezinye izinto ezisemoyeni ngexesha lenkqubo yokuntywila. Ukuphucula ngokuphawulekayo amandla okumanzi kwesigaba se-binder ye-liquid kunye nesigaba sesinyithi esinzima, kodwa i-vacuum sintering kufuneka ithathele ingqalelo ukuthintela ilahleko yokunyuka kwe-cobalt.

I-samente ye-carbide vacuum sintering ingahlulwa ngokubanzi ibe ngamanqanaba amane. Kukho inqanaba lokususa i-plasticizer, inqanaba langaphambi kwe-sintering, inqanaba lobushushu obuphezulu, kunye nenqanaba lokupholisa.

Iingenelo ze-vacuum sintering ye-cemented carbide zezi:

1. Ukunciphisa ungcoliseko lweemveliso ezibangelwa ziigesi eziyingozi kwindalo esingqongileyo. Umzekelo, kunzima kakhulu ukufikelela kwindawo yombethe ka-minus 40 ℃ kumxholo wamanzi we-hydrogen oveliswa yi-electrolysis, kodwa akunzima ukufumana iqondo elinjalo le-vacuum;

2. I-vacuum yeyona gesi ifanelekileyo ye-inert. Xa ezinye iigesi zokubuyisela kunye ne-inert azifanelekanga, okanye kwizinto ezithintekayo kwi-decarburization kunye ne-carburization, i-vacuum sintering ingasetyenziswa;

3. I-vacuum inokuphucula amandla omanzi e-liquid phase sintering, enenzuzo yokunciphisa kunye nokuphucula isakhiwo se-carbide ene-cemented;

4. I-vacuum inceda ukususa ukungcola okanye i-oxides ezifana ne-Si, i-Al, i-Mg, kwaye ihlambulule izinto;

5. I-vacuum inenzuzo ekunciphiseni i-adsorbed gas (i-gas eseleyo kwi-pores kunye neemveliso zegesi ye-reaction) kwaye inefuthe elicacileyo ekukhuthazeni ukucutheka kwinqanaba lamva le-sintering.

Ukusuka kwimbono yezoqoqosho, nangona izixhobo ze-vacuum sintering zinotyalo-mali olukhulu kunye nemveliso ephantsi yesithando somlilo, ukusetyenziswa kwamandla kuphantsi, ngoko ke iindleko zokugcina i-vacuum ziphantsi kakhulu kuneendleko zendawo yokulungiselela. Kwinqanaba le-liquid ye-sintering phantsi kwe-vacuum, ilahleko ye-volatilization ye-binder metal nayo yinto ebalulekileyo, engatshintshiyo kuphela kwaye ichaphazele ukubunjwa kokugqibela kunye nesakhiwo se-alloy kodwa iphinda ithintele inkqubo ye-sintering ngokwayo.

Ukuveliswa kwe-carbide ngesamente yinkqubo enzima. I-ZZBETTER ithatha zonke iinkcukacha zemveliso ngokungqongqo, ilawula ngokungqongqo umgangatho weemveliso ze-carbide enesamente, kwaye ibonelela ngezisombululo zeemeko zokusebenza ezinzima.

Ukuba unomdla kwiimveliso ze-tungsten carbide kwaye ufuna ulwazi oluthe kratya kunye neenkcukacha, ungaQHAGAMSHELANA NATHI ngefowuni okanye ngeposi ekhohlo, okanye SITHUMELE MAIL emazantsi ephepha.