Indlela yokusika i-Tungsten carbide rod?

Siyazi ukuthi ubulukhuni bempahla yethuluzi ngokwayo kumele bube phezulu kunobulukhuni bomsebenzi okufanele wenziwe ngomshini. Ukuqina kwe-Rockwell kwe-carbide enosimende ngokuvamile kuphakathi kuka-HRA78 kuya ku-HRA90. Uma ufuna ukuthola amaphuzu noma ukusika izinti ze-tungsten carbide ngempumelelo, izindlela ezingu-4 ezilandelayo zingase zisebenze, okuwukugaya isondo lokuhuzuka, ukukhanda ngezinto eziqinile, i-electric machining(ECM), kanye ne-electric discharge machining(EDM).

1. Sika i-carbide ingenalutho ngokugaya isondo

Kusukela manje kuqhubeke, izinto ezikwazi ukucubungula izikhala ze-carbide ikakhulukazi zibhekisela ku-poly-crystalline cubic boron nitride (PCBN) kanye nedayimane le-poly-crystalline (PCD).

Izinto eziyinhloko zamasondo okugaya i-silicon carbide eluhlaza kanye nedayimane. Njengoba ukugaya kwe-silicon carbide kuzodala ukucindezeleka okushisayo okudlula umkhawulo wamandla we-carbide enosimende, ukuqhekeka kwendawo kwenzeka kakhulu, okwenza i-silicon carbide ingabi inketho efanelekile yokwenza indawo engaqinisekisiwe.

Nakuba isondo lokugaya le-PCD lifanelekile ukuqedela yonke imisebenzi kusukela ekuqineni kuya ekuqedeni izikhala ze-carbide, ukuze kuncishiswe ukulahlekelwa kwesondo lokugaya, izikhala ze-carbide zizocutshungulwa ngaphambili ngendlela yomshini kagesi, bese wenza ukuqeda kancane nokucolisa- eqeda ngokugaya isondo ekugcineni.

2. Sika ibha ye-carbide ngokugaya nokujika

Izinto ze-CBN ne-PCBN, okuhloswe ngazo njengendlela yokusika izinsimbi ezimnyama ngobulukhuni, njengensimbi eqinile nensimbi ekhonjiwe (insimbi). I-Boron nitrite iyakwazi ukumelana nethonya lokushisa eliphezulu (ngaphezu kwamadigri angu-1000) futhi ibambe ubulukhuni ku-8000HV. Le ndawo iyenza ilingane nokucubungula izikhala ze-carbide, ikakhulukazi lezo zingxenye zesakhiwo ezihlanganiswe yi-carbide core kanye ne-steel casing ngaphansi kokulingana kokuphazamiseka.

Noma kunjalo, lapho ubulukhuni bezingxenye ze-carbide zikasimende bungaphezu kwe-HRA90, isiphumile ngokuphelele kuligi ye-boron nitrite okufanele isikwe, asikho isidingo sokugcizelela kumathuluzi e-PCBN kanye ne-CBN.

Asikwazi namanje ukulahlekelwa umbono wobubi bokufakwa kwe-PCD, ukungakwazi kwayo ukuthola imiphetho ebukhali kakhulu kanye nokuphazamiseka kokwenziwa ngama-chipbreaker. Ngakho-ke, i-PCD ingasetshenziselwa kuphela ukusika kahle kwezinsimbi ezingenayo insimbi nezingezona izinsimbi, kodwa ayikwazi ukufeza ukusika kwesibuko esinembe kakhulu sezikhala ze-carbide, okungenani okwamanje.

3. Electrolytic Machining (ECM)

Ukucutshungulwa kwe-Electrolytic ukucubungula izingxenye ngesimiso sokuthi i-carbide ingancibilika ku-electrolyte (NaOH). Iqinisekisa ukuthi ingaphezulu le-carbide workpiece alishisi. Futhi iphuzu liwukuthi isivinini sokucubungula se-ECM kanye nekhwalithi yokucubungula izimele ezimpahleni ezibonakalayo zezinto okufanele zicutshungulwe.

4. Umshini wokukhipha ugesi (EDM)

Umgomo we-EDM usekelwe esimweni sokugqwala kukagesi phakathi kwethuluzi kanye nendawo yokusebenza (ama-electrode alungile noma angalungile) ngesikhathi sokukhishwa kwe-pulse spark ukuze kukhishwe izingxenye ze-carbide ezingaphezulu ukuze kufezwe izidingo zokucubungula ezinqunywe kusengaphambili zosayizi, ukwakheka kanye nekhwalithi ephezulu yendawo yokusebenza. . Ama-electrode e-copper-tungsten kuphela nama-electrode e-copper-silver angacubungula izikhala ze-carbide.

Ngamafuphi, i-EDM ayisebenzisi amandla emishini, ayixhomekile ekunqumeni amandla okukhipha insimbi, kodwa isebenzisa ngokuqondile amandla kagesi nokushisa ukuze isuse ingxenye ye-carbide.