Ubunzima beTungsten Carbide

Ubunzima be-tungsten carbide buphezulu kakhulu, yenye yezinto ezinobulukhuni obuphezulu phakathi kweentsimbi, kwaye ubunzima bayo be-Mohs bunokufikelela kwi-9-9.5.Oku kwenza i-tungsten carbide ibe yimathiriyeli efanelekileyo yokwenza izixhobo ezinobunzima obuphezulu kunye neemela.

I-Tungsten carbide idla ngokuba yinto exutywe nezinto zetsimbi ezifana ne-tungsten carbon kunye nezibophelelo ezifana ne-cobalt kunye ne-nickel, kwaye ubunzima bayo buhlala bujikeleze i-8-9.Phakathi kwazo, i-tungsten carbide yenye yezinto ezinobulukhuni obuphezulu kwi-carbide ene-cemented, kwaye ubunzima bayo be-Mohs bunokufikelela kwi-9-9.5, ngoko ke isetyenziswa ngokubanzi ekwenzeni izixhobo ezinobunzima obuphezulu kunye neemela.I-carbide ene-cemented ene-cobalt engaphezulu ekubunjweni inokumelana nokugqwesa okungcono kunye nokumelana nokunxiba.

Ubunzima be-alloy eqinile yi-HRA89-92.5, ephezulu kakhulu, ngoko kunzima ukwenza izixhobo eziyinkimbinkimbi.Uhlobo lokuqala lwehlabathi lwe-alloy enzima luvela kwi-1923, xa isazi saseJamani u-Schloetter ngokukhawuleza sicinga, i-tungsten carbide powder yongeza i-10% ~ 20% ye-cobalt, yenza i-tungsten carbide kunye ne-cobalt entsha.
I-Carbide inobulukhuni be-86 ukuya kwi-93HRA
I-Hard alloy yenziwe ngeentlobo ngeentlobo ze-carbide yesinyithi njengezinto eziluhlaza, ukuqina kwayo okulungileyo, ukuxhathisa ukunxiba kunye nokumelana nokubola, okubizwa ngokuba ngamazinyo oshishino.Kodwa i-brittleness yayo inkulu, ayikwazi ukwenza i-machining, kunzima ukwenza imilo yezinto ezinzima.
I-alloy yokuqala enzima ukusuka kwi-1923, isazinzulu saseJamani uSchloetter.Ukuveliswa kwe-tungsten carbide kunye ne-cobalt entsha ye-alloy, ubulukhuni buphezulu kakhulu, luhlobo lokuqala lwehlabathi lwe-alloy elukhuni, ngo-1929, isazinzulu saseMelika uSchwarzkopf ukuphucula, i-alloy enzima ngokuthe ngcembe iphuhliswe.

Ubunzima be-alloy hardness buphezulu kakhulu kunentsimbi eqhelekileyo, ngoko ke ukusetyenziswa kwayo kusetyenziselwa ukusika isinyithi esiqhelekileyo.Ngokukhula okukhawulezayo kweshishini leemoto laseTshayina, imfuno yezixhobo zokusika iyanda, kwaye intengiso ye-carbide enesamente nayo iyanda.