Ukunyangwa kobushushu obungafanelekanga kwimibhobho yentsimbi engenamthungo ngokulula kunokubangela uthotho lweengxaki zemveliso, okubangela ukuba umgangatho wemveliso ube sengozini kakhulu kwaye ujike ube sisilaphu.Ukuphepha iimpazamo eziqhelekileyo ngexesha lokunyanga ukushisa kuthetha ukugcina iindleko.Ziziphi iingxaki esifanele sigxininise ekuthinteleni ngexesha lenkqubo yokunyanga ukushisa?Makhe sijonge iingxaki eziqhelekileyo kunyango lobushushu lwemibhobho yentsimbi engenamthungo:
① Isakhiwo sepayipi yentsimbi engafanelekanga kunye nokusebenza: izinto ezintathu ezibangelwa unyango olungafanelekanga lokushisa (T, t, indlela yokupholisa).
Ulwakhiwo lwe-Wei: Iinkozo ezirhabaxa A ezenziwe ngentsimbi phantsi kweemeko zobushushu obuphezulu zenza isakhiwo apho iiflakes F zisasazwa kwi-P xa zipholile.Isakhiwo esishushu kakhulu kwaye silimaza ukusebenza ngokubanzi kombhobho wensimbi.Ngokukodwa, amandla okushisa aqhelekileyo ensimbi ayancitshiswa kwaye i-brittleness iyanda.
Isakhiwo esilula se-W sinokupheliswa ngokuqhelanisa kwiqondo lokushisa elifanelekileyo, ngelixa i-W enzima kakhulu inokupheliswa ngokuqhelekileyo kwesibini.Ubushushu besibini obuqhelekileyo buphezulu, kwaye ubushushu besibini obuqhelekileyo buphantsi.Iinkozo zekhemikhali.
Umzobo we-FC balance sisiseko esibalulekileyo sokwenza ubushushu bokufudumala kunyango lobushushu lombhobho wentsimbi.Kwakhona isiseko sokufunda ukubunjwa, isakhiwo se-metallographic, kunye neepropati ze-crystals ze-FC ngokulinganayo, i-diagram yenguqu yeqondo lokushisa ye-supercooling A (umzobo we-TTT) kunye nokuguqulwa kokupholisa okuqhubekayo kwe-supercooling A. Itshathi (itshathi yeCCT) sisiseko esibalulekileyo ukwenza ubushushu bokupholisa kunyango lobushushu.
② Imilinganiselo yombhobho wensimbi ayifanelekanga: ububanzi obungaphandle, i-ovality, kunye ne-curvature ayinyamezeli.
Utshintsho kwi-diameter yangaphandle yombhobho wensimbi ngokuqhelekileyo kwenzeka ngexesha lokucima, kwaye ububanzi bangaphandle bombhobho wensimbi buyanda ngenxa yokutshintsha umthamo (okubangelwa utshintsho lwesakhiwo).Inkqubo yokulinganisa isoloko yongezwa emva kwenkqubo yokufudumala.
Utshintsho kwi-ovality yentsimbi yombhobho: Iziphelo zemibhobho yentsimbi ubukhulu becala ziyimibhobho emikhulu enodonga olubhityileyo.
Ukugoba kombhobho wentsimbi: okubangelwa kukufudumeza okungalinganiyo kunye nokupholisa kwemibhobho yentsimbi, inokusombulula ngokulungisa.Kwiimibhobho zensimbi ezineemfuno ezikhethekileyo, inkqubo yokulungelelanisa efudumeleyo (malunga ne-550 ° C) kufuneka isetyenziswe.
③Ukuqhekeka kumphezulu wemibhobho yentsimbi: okubangelwa kukufudumeza okugqithisileyo okanye isantya sokupholisa kunye noxinzelelo olugqithisileyo lobushushu.
Ukunciphisa ukuchithwa kwonyango lokushisa kwimibhobho yensimbi, kwelinye icala, inkqubo yokufudumeza kunye nenkqubo yokupholisa yombhobho wensimbi kufuneka yenziwe ngokohlobo lwetsimbi, kwaye i-medium quenching efanelekileyo kufuneka ikhethwe;ngakolunye uhlangothi, umbhobho wensimbi ocinyiweyo kufuneka uhlanjululwe okanye uhlanjululwe ngokukhawuleza ukuphelisa uxinzelelo lwayo.
④ Imikrwelo okanye umonakalo onzima kumphezulu wombhobho wentsimbi: obangelwa kukutyibilika okuhlobene phakathi kombhobho wentsimbi kunye nesixhobo sokusebenza, izixhobo kunye neerola.
⑤Umbhobho wentsimbi ufakwe i-oxidized, i-decarbonized, i-overheated, okanye i-overburned.Ibangelwa ngu-T↑, t↑.
⑥ I-oxidation yomphezulu wemibhobho yentsimbi ephathwa ngegesi ekhuselayo: Isithando somlilo asivalwanga kakuhle kwaye umoya ungena ezikweni.Ukubunjwa kwegesi yesithando somlilo akuzinzile.Kuyimfuneko ukuqinisa ulawulo lwekhwalithi yazo zonke iinkalo zokufudumeza i-tube blank (ipayipi yensimbi).
Ixesha lokuposa: Jan-15-2024