Impembelelo yonyango lwe-cryogenic ekuphuculeni umgangatho we-carbide ene-cemented

Ukususela kwi-1980, unyango lwe-cryogenic lusetyenziswe ngempumelelo ukunyusai-carbide enesamente.Izifundo ezininzi zibonise ukuba unyango lwe-cryogenic lunempembelelo ethile efanelekileyo kwiipropati ze-mechanical, ukumelana nokunxiba, ukusika ukusebenza, i-microstructure, kunye neemeko zokuxinwa kwe-cemented carbide.Ngokuphononongwa okuqhubekayo ngabaphandi, uthotho lwemilinganiselo esebenzayo lufunyenwe.kunye nezigqibo zokubaluleka kwezenzululwazi.

(1) Unyango lwe-Cryogenic lunokuphucula amandla okugoba, ukumelana nokunxiba kunye nokusebenza kokusikai-carbide enesamente, ngokwandisa ngempumelelo ubomi benkonzo yeizixhobo carbide ngesamente.Ngokuhlalutya impembelelo yeeparameters zenkqubo yonyango ye-cryogenic kwiipropathi zemishini ye-carbide ene-cemented, kukholelwa ukuba umphumo wokuphucula unyango lwe-cryogenic alutshintshi ngokuhambelana nokunciphisa ubushushu bonyango lwe-cryogenic kunye nokwandiswa kwexesha lokubamba.Kumabanga athile ei-carbide enesamente, kukho inkqubo efanelekileyo yonyango ye-cryogenic, enokufikelela kwisiphumo esilungileyo sokuphucula ngexabiso eliphantsi.

(2) Iziphumo eziphambili zonyango lwe-cryogenic kwi-microstructure yei-carbide enesamentezezi: ① ukutshintsha imo yezityalo eziziinkozo zesigaba esinzima – WC;② ukukhuthaza inguqu ye-martensitic yesigaba sokudibanisa;③ amasuntswana amahle e-carbide (isigaba se-eta) kwi-Disased and precipitated kwi-matrix yezinto.

(3) Ukuguqulwa kwe-martensite yesigaba sokubambisana, imvula ye-carbides emihle kunye nokunyuka koxinzelelo lwe-residual compressive surface emva kokuba unyango lwe-cryogenic lunokuphucula kakhulu amandla kunye nokunxiba ukuxhathisa kwe-carbide ene-cemented.Ngoko ke, ukuphuculwa kweempawu ze-macroscopic ze-carbide ene-cemented yisiphumo semiphumo edibeneyo yokuguqulwa kwesigaba sokuqinisa kunye nokuqiniswa koxinzelelo.