Iziphene eziqhelekileyo kunye nezizathu zeTungsten Carbide Sintering

I-Sintering ibhekisela kwinkqubo yokuguqula izinto ze powdery zibe yi-alloy dense kwaye linyathelo elibaluleke kakhulu kwinkqubo yokuvelisa i-carbide ene-cemented. Inkqubo ye-tungsten carbide sintering inokohlulwa ibe ngamanqanaba amane asisiseko: ukususwa kwe-arhente yokubumba kunye ne-pre-sintering stage, inqanaba eliqinileyo-inqanaba le-sintering (800 ℃ - ubushushu be-eutectic), inqanaba lolwelo lwe-sintering (ubushushu be-eutectic - ubushushu be-sintering), kunye nokupholisa. isigaba (ubushushu be-sintering - ubushushu begumbi). Nangona kunjalo, ngenxa yokuba inkqubo ye-sintering inzima kakhulu kwaye iimeko zinzima, kulula ukuvelisa iziphene kunye nokunciphisa umgangatho weemveliso. Iziphene eziqhelekileyo ze-sintering kunye nezizathu zazo zezi zilandelayo:

1. Ukuxobula

I-carbide ene-cemented eneziphene zokuxobula ithanda ukugqabhuka kunye netshokhwe. Isizathu esona sizathu sokuba i-peeling kukuba i-carbon-containing gas ibola i-carbon yamahhala, okubangelwa ukuhla kwamandla engingqi yeemveliso ezicinezelekileyo, okubangelwa ukukhupha.

2. Iintunja

Iipores zibhekisa kwiimicrons ezingaphezu kwama-40. Esona sizathu siphambili sokuveliswa kwee-pores kukuba kukho ukungcola kumzimba we-sintered ongenakumanziswa yintsimbi yesisombululo, okanye kukho ukuhlukana okunzulu kwesigaba esiqinileyo kunye nesigaba solwelo, esinokuthi senze iipores.

3. Ukuba namadyungudyungu

I-blister iya kubangela i-convex surface kwi-carbide ene-cemented, ngaloo ndlela inciphisa ukusebenza kwemveliso ye-tungsten carbide. Ezona zizathu ziphambili zokwenziwa kwamaqamu ane-sintered zezi:

1) Umoya uqokelela kumzimba we-sintered. Ngexesha lenkqubo ye-sintering shrinkage, umzimba we-sintered ubonakala kwisigaba solwelo kwaye uxinene, okuya kuthintela umoya ukuba ungakhutshelwa, kwaye emva koko wenze amaqamza athobileyo kumphezulu womzimba odibeneyo kunye nokuchasana okuncinci;

2) Kukho ukusabela kweekhemikhali ezivelisa inani elikhulu legesi kumzimba we-sintered, kwaye igesi igxininiswe kwi-sintered body, kwaye i-blister yenziwe ngokwemvelo.

4. Utshintsho

Iziganeko eziqhelekileyo ze-deformation ye-cemented carbide ziyi-blister kunye ne-concave. Ezona zizathu ziphambili ze-deformation kukusasazwa koxinaniso olungalinganiyo lwe-compact ecinezelweyo. Ukunqongophala okukhulu kwekhabhoni kumzimba we-sintered, ukulayishwa kwesikhephe ngokungekho ngqiqweni, kunye nepleyiti yokuxhasa engalinganiyo.

5. Iziko elimnyama

Iziko elimnyama libhekisela kwinxalenye enentlangano ekhululekile kwi-alloy fracture. Esona sizathu siphambili seentliziyo ezimnyama yi-carburizing okanye i-decarburization.

6. Ukuqhekeka

I-crack yinto eqhelekileyo kwinkqubo yokufaka i-carbide enesamente. Ezona zizathu zokuqhekeka zezi:

I-1) Ukunciphisa uxinzelelo alubonakali ngokukhawuleza xa i-billet isomile, kwaye ukubuyiswa kwe-elastic kukhawuleza ngexesha lokutshisa;

I-2) I-billet ixutywe i-oxidized inxalenye xa isomile, kwaye ukwandiswa kwe-thermal ye-oxidized part of the oxidized part of the part of oxidized part.

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