Izingcezu zensimbi zokubhola ezinesivinini esiphezulu, eziphansi ngokuphelele zivame ukuvela ezimhlophe.Yiqiniso, izinsimbi zokubhoboza ezigoqiwe zingaba mhlophe ngokugaya kahle indilinga yangaphandle.Isizathu sokuthi kungani izinga eliphezulu liwukuthi ngaphezu kwempahla ngokwayo, ukulawulwa kwekhwalithi ngesikhathi sokugaya nakho kuqinile impela, ngeke kube khona ukusha ebusweni bethuluzi.Okumnyama i-drill bit eye yafakwa nitrided.
Kuyindlela yamakhemikhali efaka ithuluzi eliqediwe engxubeni ye-ammonia nomhwamuko wamanzi bese liyishisisa ku-540~560°C ukuze kuthuthukiswe ukuqina kwethuluzi.Okwamanje, izingcezu zokubhola ezimnyama eziningi emakethe zimnyama kuphela. ngombala (ukuze uvale ukusha noma isikhumba esimnyama ebusweni bethuluzi), kodwa umphumela wangempela wokusetshenziswa awuzange uthuthukiswe ngempumelelo.
Kunezinqubo ezintathu zokukhiqiza ama-drill bits, okumnyama kuyagoqa, okubi kakhulu.Ezimhlophe ziyasikwa zipholishwe.Ngenxa yokuthi ayikhiqizi i-oxidation ephezulu yokushisa, ngokungafani nokugoqa, ukwakheka okusanhlamvu kwensimbi akukonakali.Isetshenziselwa ukubhola izingcezu zokusebenza ngobulukhuni obuphakeme kancane.Ukubhoboza okuphuzi okunsundu kubizwa ngokuthi i-cobalt-containing drill embonini.Lona umthetho ongashiwongo wale mboni yokubhoboza.Amadayimane aqukethe i-cobalt ekuqaleni amhlophe futhi akhiqizwa ngokugaya.Lapho sezishintshile nge-athomu kamuva, ziba nsundu ngokuphuzi (ngokuvamile okubizwa ngokuthi inhlaka), okuyiyona ehamba phambili esakazweni njengamanje.I-M35 (Co 5%) nayo inombala osagolide.
Lolu hlobo lokubhoboza lubizwa ngokuthi i-titanium-plated drill, ehlukaniswe yaba i-plating yokuhlobisa kanye ne-industrial plating.I-plating yokuhlobisa ayinawo umphumela nhlobo, inhle futhi igolide.I-Industrial Plating yinhle kakhulu, ubulukhuni bungafinyelela ku-HRC78, ephakeme kunobulukhuni bedayimane eliqukethe i-cobalt (HRC54).
Isikhathi sokuthumela: Dec-17-2021
