Imikhiqizo Ekasimende Ye-Carbide Sintered Waste Kanye Nokuhlaziywa Kwesizathu

I-Cemented carbide iwumkhiqizo we-powder metallurgy oshiswe esithandweni se-vacuum noma esithandweni sokunciphisa i-hydrogen ene-cobalt, i-nickel, ne-molybdenum njengengxenye eyinhloko ye-tungsten carbide micron-sized powder yensimbi ephikisayo eqinile.I-Sintering yisinyathelo esibucayi kakhulu ku-carbide enosimende.Okubizwa ngokuthi i-sintering ukushisa i-powder compact ezingeni lokushisa elithile, ukuyigcina isikhathi esithile, bese uyipholisa ukuze uthole impahla enezici ezidingekayo.Inqubo ye-sintering ye-carbide enosimende iyinkimbinkimbi kakhulu, futhi kulula ukukhiqiza imfucuza e-sintered uma ungaqaphile.Namuhla, u-Chuangrui Xiaobian uzokwabelana nawe ngemfucuza evamile kanye nezizathu.

1. I-Carbide sintered waste ingeyokuqala ecwecwayo
Okusho ukuthi, ingaphezulu le-carbide enosimende lidlula imifantu emaphethelweni, amagobolondo aphikisanayo noma imifantu, futhi ezimweni ezinzima, izikhumba ezincane ezincanyana njengezikali zezinhlanzi, ukuqhekeka okuqhumayo, ngisho nokugaya.Ukucwenga kubangelwa ikakhulukazi umphumela wokuxhumana we-cobalt ku-compact, ukuze igesi equkethe i-carbon ibole i-carbon yamahhala kuyo, okuholela ekunciphiseni kwamandla wendawo we-compact, okuholela ekuhlahleni.

2. Imfucuza yesibili enosimende ene-sintered sintered izimbobo
Izimbotshana ezingaphezu kwama-microns angama-40 zibizwa ngokuthi ama-pores.Izinto ezingabangela amabhamuza zingase zakhe izimbotshana.Ukwengeza, lapho kukhona ukungcola emzimbeni we-sintered ongamanziswanga yinsimbi encibilikisiwe, njengama-pores amakhulu njengokuthi "okungacindezelwa", noma umzimba we-sintered unesigaba esiqinile esiqinile futhi Ukuhlukaniswa kwesigaba se-liquid kungase kwakha izimbotshana.

3. Umkhiqizo wesithathu ovame kakhulu we-carbide sintered wasteed i-blister
Kunezimbobo emikhiqizweni ye-carbide alloy enosimende, futhi izindawo ezigobile ze-convex zivela ebusweni bezingxenye ezihambisanayo.Lesi simo sibizwa ngokuthi ama-blistering.Isizathu esiyinhloko sokuqhunyiswa kwamabhamuza ukuthi umzimba one-sintered unegesi egxilile.Ngokuvamile kunezinhlobo ezimbili: eyodwa ukuthi umoya unqwabelana emzimbeni we-sintered, futhi phakathi nenqubo ye-sintering shrinkage, umoya uhamba usuka ngaphakathi uye phezulu.Uma kukhona ukungcola kobukhulu obuthile emzimbeni osikiwe, njengezinsalela ze-alloy, izinsalela zensimbi, nezinsalela ze-cobalt, umoya uzogxila lapha.Ngemuva kokuthi umzimba owenziwe nge-sintered uvela esigabeni se-liquid futhi uminyene, umoya awukwazi ukukhishwa.Amabhamuza akheka ezindaweni ezincane kakhulu.

Okwesibili ukuthi kukhona ukusabela kwamakhemikhali okukhiqiza inani elikhulu legesi emzimbeni we-sintered.Uma kukhona ama-oxide athile emzimbeni we-sintered, ayancishiswa ngemva kokuba isigaba se-liquid sibonakala sikhiqiza igesi, okuzokwenza umkhiqizo ube yibhamuza;Ama-alloys e-WC-CO ngokuvamile akhiwa Okubangelwa ukuhlangana kwama-oxide kungxube.

4. Kukhona futhi inhlangano engalingani: ukuxuba

5, bese kuba ne-deformation
Ukushintsha komumo okungajwayelekile womzimba we-sintered kubizwa ngokuthi i-deformation.Izizathu eziyinhloko ze-deformation yilezi ezilandelayo: ukusatshalaliswa kokuqina kwama-compacts akufani, ngoba ubuningi be-alloy eqediwe bufana;umzimba we-sintered untula kakhulu kukhabhoni endaweni, ngoba ukuntuleka kwekhabhoni kunciphisa isigaba samanzi ngokuqhathaniswa;ukulayishwa kwesikebhe akunangqondo;i-backing plate ayilingani.