IiMveliso zeNkunkuma yeCarbide eneCemented kunye noHlaziyo lweSizathu

I-carbide ene-cemented yimveliso ye-metallurgy engumgubo efakwe kwisithando somlilo okanye isithando sokunciphisa i-hydrogen kunye ne-cobalt, i-nickel, kunye ne-molybdenum njengenxalenye ephambili ye-tungsten carbide umgubo we-micron we-high-hardness refractory metal.I-Sintering linyathelo elibaluleke kakhulu kwi-carbide enesamente.Into ebizwa ngokuba yi-sintering kukutshisa i-powder compact kwiqondo lokushisa elithile, liyigcine ixesha elithile, kwaye liyipholise phantsi ukuze lifumane izinto eziphathekayo ezineempawu ezifunekayo.Inkqubo ye-sintering ye-cemented carbide inzima kakhulu, kwaye kulula ukuvelisa inkunkuma ene-sintered ukuba awuqapheli.Namhlanje, uChuangrui Xiaobian uya kukwabelana nawe ngenkunkuma eqhelekileyo kunye nezizathu.

1. Carbide sintered inkunkuma yeyokuqala ukuxobula
Oko kukuthi, umphezulu we-carbide ene-cemented udlula kwiindawo ezinqamlekileyo, iigobolondo ezijikelezayo okanye eziqhekezayo, kwaye kwiimeko ezinzima, izikhumba ezincinci ezinqabileyo ezifana nezikali zeentlanzi, ukuqhekeka, kunye nokuchithwa.I-peeling iyinhloko ngenxa yesiphumo soqhagamshelwano lwe-cobalt kwi-compact, ukwenzela ukuba i-carbon-containing gas ibola i-carbon free kuyo, okubangelwa ukuhla kwamandla asekuhlaleni e-compact, okubangelwa ukukhupha.

2. Inkunkuma yesibini eqhelekileyo ye-cemented carbide sintered yimingxuma
Iipores ezingaphezulu kwe-40 microns zibizwa ngokuba yi-pores.Izinto ezinokubangela amadyunguza zinokwenza iipores.Ukongezelela, xa kukho ukungcola kumzimba we-sintered ongenakumanziswa yintsimbi etyhidiweyo, njengama-pores amakhulu anjenge "unpressed", okanye umzimba odibeneyo unesigaba esinzima esiqinileyo kwaye Ukwahlulwa kwesigaba solwelo kunokwenza iipores.

3. Eyesithathu imveliso yenkunkuma enesamente enesamente ixhaphakileyo yiblister
Kukho imingxuma kwiimveliso ze-carbide alloy, kunye neendawo ezigobileyo ze-convex zibonakala kumphezulu weendawo ezihambelanayo.Le nto ibizwa ngokuba yi-blistering.Esona sizathu siphambili sokugqabhuka kwamadyungudyungu kukuba umzimba we-sintered unerhasi exineneyo.Ngokuqhelekileyo kukho iindidi ezimbini: enye kukuba umoya uqokelela kumzimba we-sintered, kwaye ngexesha lenkqubo ye-sintering shrinkage, umoya uhamba ukusuka ngaphakathi ukuya phezulu.Ukuba kukho ukungcola kobungakanani obuthile kumzimba osikiweyo, njengezinto ezilahliweyo zealloy, iintsimbi zentsimbi, nezilahlwa zecobalt, umoya uya kugxila apha.Emva kokuba umzimba we-sintered ubonakala kwisigaba solwelo kwaye ugxininiswe, umoya awukwazi ukukhutshwa.Amadyungudyungu akheleka kwezona ndawo zincinci.

Okwesibini kukuba kukho ukusabela kweekhemikhali ezivelisa isixa esikhulu serhasi kumzimba onesitere.Xa kukho ezinye ii-oxides kumzimba we-sintered, ziyancipha emva kokuba isigaba solwelo sibonakala sivelisa igesi, eya kwenza i-bubble yemveliso;Ingxubevange ye-WC-CO iqulunqwe ngokubanzi Ibangelwa yi-agglomeration yeeoxides kumxube.

4. Kukho nombutho ongalinganiyo: ukuxuba

5, kwaye ke kukho deformation
Utshintsho lwemilo engaqhelekanga yomzimba osindileyo kuthiwa luguquko.Izizathu eziphambili ze-deformation zilandelayo: ukusabalalisa koxinzelelo lwee-compacts akufani, kuba ubuninzi be-alloy egqityiweyo bufana;umzimba we-sintered uswele kakhulu kwikhabhoni yendawo, kuba ukungabikho kwekhabhoni kunciphisa isigaba solwelo ngokulinganayo;ukulayishwa kwesikhephe akunangqiqo;i-backing plate ayilingani.