A cikin waɗanne fagage ne aiwatar da annealing na kayan aiki mai ɗimbin yawa yafi amfani?

Da farko, domin rage taurin workpiece karfe da kuma dauke da karfe bayan ƙirƙira, workpiece ne mai tsanani zuwa sama 20-40 digiri Celsius, sa’an nan a hankali sanyaya, sabõda haka, lamellar cimentite a cikin pearlite zama mai siffar zobe a lokacin sanyaya tsari. , don rage taurin karfe, wannan al’amari nasa ne ga spheroidizing annealing.

Na biyu, domin ya sa aka gyara a cikin gami da simintin gyare-gyare a ko’ina, za mu iya zafi da workpiece zuwa wani zazzabi, amma a kan jigo cewa ba za a iya narke, ci gaba da shi dumi na wani lokaci don ba da damar na ciki aka gyara na ciki. workpiece a ko’ina rarraba sa’an nan sanyi. Don sanya shi cimma wasu kaddarorin sinadarai don inganta aikin sa, wannan hanyar dumama ita ce kawar da ɓarna.

Na uku, simintin gyare-gyaren ƙarfe da sassa masu walda gabaɗaya suna da damuwa na ciki. Zamu iya amfani da na’urorin dumama shigar da mitoci masu tsayi don dumama su, kuma zafin jiki ya kamata ya kasance ƙasa da 100-200 ° C, sa’an nan kuma bar shi yayi sanyi ta halitta. Rage damuwa.

Na hudu, don yin simintin ƙarfe mai ɗauke da siminti ya zama baƙin ƙarfe na filastik, haka nan za mu iya amfani da kayan dumama na induction don zafi da shi a hankali zuwa zafin jiki na kusan digiri 1000, a bar shi ya huce sannu a hankali, ta yadda siminti na ciki ya lalace. a cikin flocculent graphite, kuma wannan hanyar dumama shine graphite annealing.

Na biyar, alal misali, a cikin tsarin jujjuyawar sanyi ko zane mai sanyi, ana samun yanayin taurin gaske a cikin wayoyi da zanen ƙarfe. Domin kawar da wannan taurare sabon abu, ya kamata mu nan da nan sarrafa zafin jiki na workpiece lokacin da aka mai tsanani zuwa 50-150 digiri Celsius. Don taurare da workpiece don tausasa karfe, wannan dumama hanya ne recrystallization annealing.