① Been abuurasho. Birta GCr15 waxay leedahay wax qabad wanaagsan oo been abuur ah iyo heerkulka been abuurka ah eetungsten birta caaryadawaa ballaadhan yahay. Xeerarka habka been abuurka guud ahaan waa: kululaynta 1050 ~ 1100 ℃, heerkulka been abuur ah bilowga ah 1020 ~ 1080 ℃, heerkulka been abuur ah final 850 ℃, iyo qaboojinta hawada ka dib been abuurasho. Qaabka la been-abuuray waa inuu noqdaa jidh spheroidal flake ah. Qaab dhismeedka noocan oo kale ah waa la spheroidized oo la tirtiri karaa iyada oo aan caadi ahayn.
②Caadi dabka Heerkulka kulaylka caadiga ah ee GCr15 birta guud ahaan waa 900 ~ 920 ℃, iyo heerka qaboojinta ma noqon karto wax ka yar 40 ~ 50 ℃ / min. Saldhigyada caaryada yaryar waxaa lagu qaboojin karaa hawada deggan; Saldhigyada caaryada waaweyn waxaa lagu qaboojin karaa qarax hawada ama buufin; Saldhigyada caaryada waaweyn ee dhexroorkoodu ka badan yahay 200mm ayaa lagu qaboojin karaa saliid kulul, waxaana laga soo saari karaa qaboojinta hawada marka heerkulka dusha sare uu gaaro 200 ° C. Cadaadiska gudaha ee uu sameeyay habka qaboojinta dambe ee caaryada birta tungsten waa mid weyn oo sahlan in la dillaaco. Waa in isla markiiba la tirtiraa spheroidized ama habka nuugista diiqada waa in lagu daraa.
③Spheroiding annealing. Tilmaamaha habka spheroidizing annealing ee birta GCr15 guud ahaan waa: tungsten birta kulaylka caaryada 770 ~ 790 ℃, heerkulka 2 ~ 4h, heerkulka isothermal 690 ~ 720 ℃, wakhtiga isothermal 4 ~ 6h. Burburinta ka dib, qaabdhismeedku waa quruxsan yahay oo lebbisan pearlite lebbisan oo leh engegan 217 ~ 255HBS iyo waxqabadka goynta wanaagsan. Birta GCr15 waxay leedahay adkeysi wanaagsan (dhexroorka adag ee adag ee saliidda deminta waa 25mm), iyo qoto dheer ee lakabka adag ee laga helay deminta saliidda waxay la mid tahay tan qalabka kaarboonka iyada oo loo marayo deminta biyaha.
Waqtiga boostada: Agoosto-23-2024
