I-oxidation yeforgingsichaphazeleka kakhulu kukubunjwa kweekhemikhali zetsimbi efudumeleyo kunye nezinto zangaphakathi nangaphandle zendandatho yokufudumeza (njengokubunjwa kwegesi yesithando somlilo, ubushushu bokufudumala, njl.).
1) Ukubunjwa kweekhemikhali zezinto zetsimbi
Ubungakanani bomlinganiselo we-oxide owenziwe ngokusondeleyo uhambelana nokwakheka kweekhemikhali. Ukuphakama kwekhabhoni yensimbi, isikali esincinci se-oxide senziwe, ngakumbi xa umxholo wekhabhoni udlula i-0.3%. Oku kungenxa yokuba emva kokuba i-carbon oxidized, i-layer ye-monoxide (CO) yegesi yenziwe phezu kwendawo engenanto, edlala indima ekuvimbeleni ukuqhubeka kwe-oxidation. Intsimbi ye-alloy e-Cr, i-Ni, i-Al, i-Mo, i-Si kunye nezinye izinto, ukufudumeza ngakumbi xa ukubunjwa kwesikali kuncinci, kuba ezi zinto zazixutywe nge-oxidized, zingenza umaleko kumphezulu wefilimu yensimbi eshinyeneyo, kwaye kwaye intsimbi isondele kwi-coefficient yokwandisa i-thermal, kwaye ifakwe ngokuqinileyo kumphezulu, akulula ukuphuka nokuwa, ngoko ke ukuthintela i-oxidation eyongezelelweyo, ukukhuselwa. I-Heat-resistant non-peeling steel yintsimbi ye-alloy enezinto ezininzi ezingentla, kwaye xa umxholo we-Ni kunye ne-Cr kwintsimbi yi-13%? Kwi-20%, phantse akukho oxidation eyenzekayo.
2) Ukubunjwa kwegesi yesithando somlilo
Ukubunjwa kwegesi yesithando somlilo kunempembelelo enkulu ekubunjweniukwenzaisikali, ngokufanayoizinto zentsimbikwiindawo ezahlukeneyo zokufudumeza umoya, ukubunjwa kwesikali akufani, kwi-oxidizing oxidizing gas, ukubunjwa kwesikali yeyona nto, i-gray ekhanyayo, kulula ukuyisusa; Kwigesi yomlilo engathathi hlangothi (ikakhulu iqulethe i-N2) kunye nokunciphisa igesi yesithando somlilo (equkethe i-CO, i-H2, njl.), isikali se-oxide esakhiweyo simnyama ngaphantsi kwaye akulula ukususa. Ukuze kuncitshiswe ukubunjwa kunye nokususwa kwesikali se-oxide, ingqalelo kufuneka ihlawulwe ekulawuleni ukubunjwa kwegesi yesithando somlilo kwinqanaba ngalinye lokufudumala. Ngokuqhelekileyo, i-forgings ingaphantsi kwe-1000 ℃, kwaye i-oxidized furnace gas isetyenziselwa ukufudumeza, kuba iqondo lokushisa alikho phezulu ngeli xesha, inkqubo ye-oxidation ayinzima kakhulu, kwaye isikali se-oxide esenziwe kulula ukususa; Xa iqondo lobushushu lidlula i-1000 ℃, ngakumbi kwinqanaba lokubamba ubushushu obuphezulu, ukunciphisa irhasi yesithando somlilo okanye irhasi yesithando somlilo engathathi hlangothi kufuneka isetyenziswe ukunciphisa ukuveliswa kwesikali se-oxide.
Ubume begesi yesithando somlilo kwisithando somlilo somlilo sixhomekeke kumthamo womoya onikezelwe kumafutha ngexesha lokutsha. Ukuba i-coefficient eyongezelelweyo yomoya kwisithando somlilo ikhulu kakhulu, ukunikezelwa komoya kuninzi, igesi yomlilo i-oxidized, i-metal oxide scale ingaphezulu, ukuba i-coefficient engaphezulu yomoya kwisithando somlilo ngu-0.4? Kwi-0.5, igesi yesithando somlilo iyancitshiswa, yenza umoya okhuselayo ukuze ugweme ukubunjwa kwesikali se-oxide kwaye ungaphumeleli ukufudumala kwe-oxidation.

3) Ukufudumala kweqondo lokushisa
Ubushushu bobushushu bukwayeyona nto iphambili yokubumba isikali sokwenziwa, kokukhona iqondo lobushushu liphezulu, kokukhona i-oxidation iqatsela. Kwi 570 ℃? Ngaphambi kwe-600 ℃, ukubumba i-oxidation kuyacotha, ukusuka kwi-700 ℃ isantya se-oxidation esikhawulezileyo, ukuya kwi-900 ℃? Kwi-950 ℃, i-oxidation ibaluleke kakhulu. Ukuba izinga le-oxidation lithathwa ukuba li-1 kwi-900 ° C, i-2 kwi-1000 ° C, i-3.5 kwi-1100 ° C, kunye ne-7 kwi-1300 ° C, ukwanda kwamaxesha amathandathu.
4) Ixesha lokufudumala
Okukhona ixesha lokufudumeza kwe-forgings kwigesi ene-oxidizing eziko, kokukhona ukusasazwa kwe-oxidation enkulu, kwaye ngakumbi isikali se-oxide senziwa, ngakumbi kwinqanaba lobushushu obuphezulu, ngoko ke ixesha lokufudumeza kufuneka lincitshiswe kangangoko kunokwenzeka. , ngakumbi ixesha lokufudumala kunye nexesha lokubamba kwiqondo lokushisa eliphezulu kufuneka lifinyezwe ngokusemandleni.
Ukongeza, i-billet yokubumba kwiqondo lokushisa eliphezulu ayigcini nje i-oxidized kwiziko, kodwa nakwinkqubo yokubumba, nangona isikali se-oxide kwi-billet sicocwa, ukuba ubushushu be-billet lusaphezulu, luya kuxutywa kabini, kodwa izinga le-oxidation liye liba buthathaka ngokuthe ngcembe ngokuhla kweqondo lobushushu bebhiliti.