Inkqubo yokwenziwa kokufakwa kwe-carbide

2024-01-04

Inkqubo yokuvelisa i-carbide blades ayifani nokuphosa okanye intsimbi, eyenziwa ngokunyibilika kwe-ore kwaye emva koko ifakwe kwi-molds, okanye iyenze ngokubumba, kodwa i-carbide powder (i-tungsten carbide powder, i-titanium carbide powder, i-tantalum carbide powder) eya kuphela. Nyibilika xa ifikelela kwi-3000 °C okanye ngaphezulu. umgubo, njl. Ukwenza le bhondi ye-carbide yomelele, i-cobalt powder isetyenziswa njenge-agent edibeneyo. Ngaphantsi kwesenzo sokushisa okuphezulu kunye noxinzelelo oluphezulu, ukudibanisa phakathi kwe-carbide kunye ne-cobalt powder kuya kuphuculwa, ukwenzela ukuba kuya kuqulunqwa ngokuthe ngcembe. Le nto ibizwa ngokuba sintering. Ngenxa yokuba kusetyenziswa umgubo, le ndlela ibizwa ngokuba yi powder metallurgy.

Ngokwenkqubo yokwenziwa kokufakwa kwe-carbide ngesamente, ubukhulu beqhekeza lecandelo ngalinye le-carbide efakiweyo yahlukile, kunye nokusebenza kokufakwa kwe-carbide eyenziwe ngesamente kwahlukile.

Manufacturing process of carbide inserts

I-Sintering yenziwa emva kokwenza. Oku kulandelayo yinkqubo yonke yenkqubo ye-sintering:

1) Cinezela i-tungsten carbide powder ecolekileyo kakhulu ecolekileyo kunye ne-cobalt powder ngokwemilo efunekayo. Ngeli xesha, iinqununu zetsimbi zixhunyiwe komnye nomnye, kodwa ukudibanisa akuqinanga kakhulu, kwaye baya kutyunyuzwa ngamandla amancinci.

2) Njengoko iqondo lokushisa kwi-powder block particles eyenziwe yanda, iqondo lokuxhamla liqiniswa ngokuthe ngcembe. Kwi-700-800 ° C, ukudityaniswa kweengqungquthela kuseyinto enqabileyo kakhulu, kwaye kusekho izikhewu ezininzi phakathi kweengqungquthela, ezinokubonakala kuyo yonke indawo. Ezi voids zibizwa ngokuba yi-voids.

3) Xa ukushisa kweqondo lokushisa kuphakama ukuya kwi-900 ~ 1000 ° C, i-voids phakathi kweengqungquthela ziyancipha, inxalenye emnyama yomgca iphantse yanyamalala, kwaye kuphela inxalenye enkulu emnyama isala.

4) Xa iqondo lokushisa lisondela ngokuthe ngcembe kwi-1100 ~ 1300 ° C (oko kukuthi, ukushisa okuqhelekileyo kwe-sintering), i-voids iyancipha ngakumbi, kwaye ukudibanisa phakathi kweengqungquthela kuba namandla.

5) Xa inkqubo ye-sintering igqityiwe, i-tungsten carbide particles kwi-blade i-polygons encinci, kwaye into emhlophe ingabonwa ngeenxa zonke kubo, eyi-cobalt. Isakhiwo se-sintered blade sisekelwe kwi-cobalt kwaye sihlanganiswe ngamaqhekeza e-tungsten carbide. Ubungakanani kunye nokuma kweengqungquthela kunye nobukhulu be-cobalt layer kuyahluka kakhulu kwiipropati zokufaka i-carbide.