Iipores emva kokuSintering

I-carbide enesamente luhlobo lwekhompawundi ebandakanya i-tungsten elinganayo kunye nekhabhoni, enobulukhuni kufutshane nedayimani. I-carbide enesamente inokuqina okuphezulu kunye nobunzima obuphezulu ngexesha elinye. I-carbide enesamente yenziwe ngumgubo wesinyithi, kwaye i-sintering yeyona nkqubo ibalulekileyo ngexesha lokwenziwa kwemveliso ye-carbide enesamente. Kulula ukubangela iipores emva kwe-tungsten carbide sintering ukuba ayilawulwa kakuhle. Kweli nqaku, uya kufumana ulwazi malunga neepores emva kwe-tungsten carbide sintering.

I-tungsten carbide powder kunye ne-binder powder zixutywe kumlinganiselo othile. Emva koko umgubo womxube wenziwa ube bubucwebe obuluhlaza emva kokusila okumanzi kumatshini wokungqusha webhola, ukomiswa kokutshiza, kunye nokudibanisa. I-compact tungsten carbide compacts ifakwe kwi-HIP sintering furnace.

Inkqubo ephambili ye-sintering inokwahlulwa ibe ngamanqanaba amane. Zikukususwa kwe-arhente yokubumba kunye nenqanaba langaphambili le-sintering, inqanaba eliqinileyo le-sintering, i-liquid-phase sintering stage, kunye ne-cooling sintering stage. Ngexesha le-sintering, iqondo lobushushu liyenyuka kancinci. Kwiifektri, kukho iindlela ezimbini eziqhelekileyo zokucoca. Enye i-hydrogen sintering, apho ukubunjwa kwamalungu kulawulwa yi-phase reaction kinetics kwi-hydrogen kunye noxinzelelo lwe-atmospheric. Kwaye enye i-vacuum sintering, esebenzisa i-vacuum bume okanye imeko-bume encitshisiweyo. Uxinzelelo lwegesi lulawula ukubunjwa kwe-carbide ene-cemented ngokunciphisa i-kinetics yokuphendula.

Kuphela xa abasebenzi belawula inqanaba ngalinye ngononophelo, iimveliso zokugqibela ze-tungsten carbide zinokufumana i-microstructure efunwayo kunye nokwakheka kweekhemikhali. Amanye ama-pores anokubakho emva kokucoca. Esinye sezizathu ezibalulekileyo malunga nobushushu be-sintering. Ukuba iqondo lokushisa liphakama ngokukhawuleza, okanye ukushisa kwe-sintering kuphezulu kakhulu, ukukhula kweenkozo kunye nokunyakaza kuya kungalingani, okubangela ukuveliswa kweepores. Esinye isizathu esibalulekileyo yi-arhente eyenza. Isibophelelo kufuneka sisuswe phambi kokuba sintering. Ngaphandle koko, i-ejenti yokwenza i-volatilize ngexesha lokunyusa ukushisa kwe-sintering, okuya kubangela iipores.

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