Lub hardness ntawm tungsten carbide yog siab heev, nws yog ib qho ntawm cov khoom uas muaj hardness siab tshaj plaws ntawm cov hlau, thiab nws cov Mohs hardness tuaj yeem ncav cuag 9-9.5.Qhov no ua rau tungsten carbide yog cov khoom siv zoo tshaj plaws rau kev tsim cov cuab yeej hardness siab thiab riam.
Tungsten carbide feem ntau yog cov khoom sib xyaw nrog cov hlau xws li tungsten carbon thiab binders xws li cobalt thiab npib tsib xee, thiab nws qhov hardness feem ntau yog nyob ib ncig ntawm 8-9.Ntawm lawv, tungsten carbide yog ib qho ntawm cov khoom uas muaj qhov nyuaj tshaj plaws hauv cemented carbide, thiab nws cov Mohs hardness tuaj yeem ncav cuag 9-9.5, yog li nws yog dav siv hauv kev tsim cov cuab yeej hardness thiab riam.Cov cemented carbide nrog ntau cobalt nyob rau hauv muaj pes tsawg leeg muaj zoo corrosion kuj thiab hnav tsis kam.
Lub hardness ntawm hard alloy yog HRA89-92.5, uas yog siab heev, yog li nws yog ib qho nyuaj rau ua nyuaj cov tais diav.Lub ntiaj teb thawj hom tawv tawv yog los ntawm 1923, thaum tus kws tshawb fawb German Schloetter dheev lub tswv yim, tungsten carbide hmoov ntxiv 10% ~ 20% cobalt, ua tungsten carbide thiab cobalt tshiab alloy.
Carbide muaj qhov nyuaj ntawm 86 txog 93HRA
Hard alloy yog ua los ntawm ntau yam refractory hlau carbide raws li raw cov ntaub ntawv, nws zoo hardness, hnav tsis kam thiab corrosion kuj, hu ua cov hniav muaj.Tab sis nws cov brittleness yog loj, tsis tuaj yeem machining, nyuaj ua rau cov duab ntawm cov khoom complex.
Thawj qhov nyuaj alloy los ntawm 1923, German kws tshawb fawb Schloetter.Lub invention ntawm tungsten carbide thiab cobalt tshiab alloy, hardness yog siab heev, yog lub ntiaj teb no thawj hom hard alloy, 1929, tus kws tshawb fawb Asmeskas Schwarzkopf los txhim kho, nyuaj alloy maj mam tsim.
Hard alloy hardness yog ntau dua li cov hlau ntau, yog li nws siv tsuas yog siv los txiav cov hlau ntau.Nrog rau kev nthuav dav sai ntawm kev lag luam tsheb hauv Suav teb, qhov kev thov rau cov cuab yeej txiav yog nce, thiab kev ua lag luam rau cemented carbide kuj tseem nthuav.
Post lub sij hawm: May-09-2023
