Amagama Mayelana ne-Tungsten Carbide

Ngokuthuthuka kobuchwepheshe, abantu bajaha amathuluzi angcono, nezinto zokwakha kanye nebhizinisi labo. Ngaphansi kwalesi simo, i-tungsten carbide ithatha indima ebalulekile embonini yesimanje. Futhi kulesi sihloko kuzokwethulwa amagama athile mayelana ne-tungsten carbide.

1. I-carbide enosimende

I-carbide enosimende isho inhlanganisela ene-sintered eyakhiwe ngama-carbide ensimbi aphikisayo nezibophezelo zensimbi. Phakathi kwama-carbides ensimbi, i-tungsten carbide, i-titanium carbide, i-tantalum carbide, nokunye kukhona ama-carbide asetshenziswa kakhulu njengamanje. Futhi i-binder yensimbi esetshenziswa kakhulu i-cobalt powder, nezinye izibophezelo zensimbi njenge-nickel, ne-iron, nazo zizosetshenziswa ngezinye izikhathi.

2. I-Tungsten carbide

I-Tungsten carbide iwuhlobo lwe-carbide enosimende, eyakhiwe nge-tungsten carbide powder nezibophezelo zensimbi. Ngephuzu eliphakeme lokuncibilika, imikhiqizo ye-tungsten carbide ayikwazi ukukhiqizwa njengezinye izinto. I-powder metallurgy iyindlela evamile yokukhiqiza imikhiqizo ye-tungsten carbide. Ngama-athomu e-tungsten nama-athomu e-carbon, imikhiqizo ye-tungsten carbide inezinto eziningi ezinhle, okuyenza ibe yithuluzi elidumile embonini yesimanje.

3. Ukuminyana

Ukuminyana kubhekisela esilinganisweni sesisindo nevolumu yezinto. Umthamo wayo uqukethe nomthamo wama-pores kundaba.

Emikhiqizweni ye-tungsten carbide, i-cobalt noma ezinye izinhlayiya zensimbi zikhona. Ibanga elijwayelekile le-tungsten carbide i-YG8, eliqukethe u-8% we-cobalt, linobuningi obungu-14.8g/cm3. Ngakho-ke, njengoba okuqukethwe kwe-cobalt ku-tungsten-cobalt alloy kwanda, ukuminyana okuphelele kuzokwehla.

4. Ubulukhuni

Ubulukhuni busho ikhono lempahla yokumelana nokuguquguquka kwepulasitiki. Ubulukhuni beVickers kanye nobulukhuni be-Rockwell kuvame ukusetshenziselwa ukukala ubulukhuni bemikhiqizo ye-tungsten carbide.

Vickers hardness isetshenziswa kabanzi emhlabeni jikelele. Le ndlela yokulinganisa ubulukhuni ibhekisela enanini lokuqina elitholwe ngokulinganisa usayizi wokuhlehlisa ngokusebenzisa idayimane ukuze ingene ebusweni besampula ngaphansi kwesimo esithile somthwalo.

Ukuqina kwe-Rockwell kungenye indlela yokulinganisa ubulukhuni esetshenziswa kakhulu. Ikala ubulukhuni isebenzisa ukujula kokungena kwekhoni yedayimane evamile.

Kokubili indlela yokulinganisa ubulukhuni be-Vickers kanye nendlela yokulinganisa ubulukhuni be-Rockwell ingasetshenziswa ukukala ubulukhuni be-carbide enosimende, futhi lokhu okubili kungashintshwa ngokufanayo.

Ukuqina kwe-tungsten carbide kusuka ku-85 HRA kuya ku-90 HRA. Ibanga elivamile le-tungsten carbide, i-YG8, linobunzima obungu-89.5 HRA. Umkhiqizo we-tungsten carbide onobulukhuni obuphezulu ungabekezelela umthelela futhi ugqoke kangcono, ngakho-ke ungasebenza isikhathi eside. Njenge-bonder, i-cobalt encane ibangela ubulukhuni obungcono. Futhi i-carbon ephansi ingenza i-tungsten carbide ibe nzima. Kodwa i-decarbonization ingenza i-tungsten carbide ibe lula ukuyilimaza. Ngokuvamile, i-tungsten carbide enhle izokwandisa ubulukhuni bayo.

5. Amandla okugoba

Isampula liphindaphindwa njengenduku esekelwe kalula kuma-fulcrum amabili, futhi umthwalo usetshenziswa emgqeni omaphakathi wama-fulcrum amabili kuze kube yilapho isampula iphuka. Inani elibalwe ngefomula yokusonta lisetshenziswa ngokuhambisana nomthwalo odingekayo wokuphuka kanye nendawo ephambanayo yesampula. Okwaziwa nangokuthi amandla okuphuka aguquguqukayo noma ukumelana nokugoba.

Ku-WC-Co tungsten carbide, amandla okuguquguquka akhula ngokunyuka kokuqukethwe kwe-cobalt ye-tungsten-cobalt alloy, kodwa lapho okuqukethwe kwe-cobalt kufinyelela cishe ku-15%, amandla okuguquguquka afinyelela inani eliphakeme, bese eqala ukwehla.

Amandla okugoba akalwa ngesilinganiso samanani amaningana akaliwe. Leli nani lizophinda lishintshe njengejiyomethri yesifanekiso, isimo esingaphezulu, ukucindezelwa kwangaphakathi, kanye nokukhubazeka kwangaphakathi kokushintsha kwezinto. Ngakho-ke, amandla e-flexural ayisilinganiso samandla kuphela, futhi inani lamandla e-flexural alikwazi ukusetshenziswanjengesisekelo sokukhetha izinto ezibonakalayo.

6. Amandla okuqhekeka okuphambene

Amandla okuqhekeka okuguquguqukayo yikhono le-tungsten carbide ukumelana nokugoba. I-Tungsten carbide enamandla angcono wokuqhekeka aguquguqukayo inzima kakhulu ukuyonakalisa ngaphansi komthelela. I-tungsten carbide enhle inamandla angcono okuqhekeka okuphambene. Futhi lapho izinhlayiya ze-tungsten carbide zisakazwa ngokulinganayo, i-transverse iba ngcono, futhi i-tungsten carbide akulula ukuyilimaza. Amandla okuphuka aguquguqukayo wemikhiqizo ye-YG8 tungsten carbide acishe abe ngu-2200 MPa.

7. Amandla okuphoqa

Amandla okucindezelayo amandla ayizibuthe ayinsalela akalwa ngokwenza uzibuthe ku-carbide enosimende ukuya esimweni esigcwele bese ewukhipha uzibuthe.

Kunobudlelwane obuqondile phakathi kobukhulu bezinhlayiyana ezimaphakathi zesigaba se-carbide esisikiwe kanye namandla okuphoqa. Ukuqina kwesilinganiso sosayizi wezinhlayiyana zesigaba esizibuthe, kuphakama inani lamandla okuphoqelela. Elebhu, amandla okuphoqelela ahlolwa umhloli wamandla ophoqelelayo.

Lawa amagama e-tungsten carbide kanye nezakhiwo zayo. Amanye amatemu azokwethulwa ezihlokweni ezilandelayo.

Uma unentshisekelo emikhiqizweni ye-tungsten carbide futhi ufuna ulwazi olwengeziwe nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma ngemeyili kwesokunxele, noma SITHUMELE IMEYILI ezansi nekhasi.