Yeyiphi intsimbi enokumelana nobushushu obuphezulu?
Kukho iintlobo ezininzi zentsimbi, kodwa imisebenzi yazo ayifani ncam.
Ngokuqhelekileyo, sibhekisela kwintsimbi ephezulu yokushisa njenge "intsimbi ekwazi ukumelana nobushushu". Intsimbi ekwazi ukumelana nobushushu ibhekisa kwiklasi yeentsimbi ezinokumelana ne-oxidation kunye nokwanelisayo kobushushu obuphezulu kunye nokumelana nobushushu obugqwesileyo phantsi kweemeko eziphezulu zobushushu. I-China yaqala ukuvelisa intsimbi ekwazi ukumelana nobushushu ngo-1952.
Intsimbi ekwaziyo ukumelana nobushushu isoloko isetyenziselwa ukwenziwa kwezinto ezisebenza kumaqondo obushushu aphezulu kwiibhoyila, iiinjini zomphunga, oomatshini bombane, iziko lemizi-mveliso kunye namacandelo emizi-mveliso anje ngenqwelomoya kunye namashishini epetrochemical. Ukongeza kumandla obushushu obuphezulu kunye nokuchasana nobushushu obuphezulu be-oxidative corrosion, la macandelo afuna ukuxhathisa okwanelisayo, ukuqhubekeka okubalaseleyo kunye nokuqina, kunye nozinzo oluthile lolungiselelo ngokweendlela ezahlukeneyo zokusetyenziswa.
Intsimbi ekwazi ukumelana nobushushu inokwahlulwa ibe ziindidi ezimbini ngokomsebenzi wayo: intsimbi echasene ne-oxidation kunye nentsimbi enganyangekiyo. Intsimbi ye-Anti-oxidation ikwabizwa ngokuba yintsimbi yesikhumba ngokufutshane. Intsimbi yamandla ashushu ibhekisa kwintsimbi enokumelana ne-oxidation ebalaseleyo kumaqondo obushushu aphezulu kwaye inamandla aphezulu obushushu.
Intsimbi ekwaziyo ukumelana nobushushu inokohlulwa ibe yintsimbi ekwaziyo ukumelana nobushushu, intsimbi ye-martensitic ekwazi ukumelana nobushushu, intsimbi ekwaziyo ukumelana nobushushu, kunye nentsimbi ekwaziyo ukumelana nobushushu.
Intsimbi ye-Austenitic ekwazi ukumelana nobushushu iqulethe izinto ezininzi ze-austenite ezifana ne-nickel, manganese, kunye ne-nitrogen. Xa ingaphezulu kwe-600 ℃, inamandla amahle obushushu obuphezulu kunye nozinzo lwelungiselelo, kwaye inomsebenzi obalaseleyo wokuwelda. Isetyenziswa ngokubanzi ngaphezulu kwe-600 ℃ idatha yobunzulu bobushushu bomsebenzi. Intsimbi ye-Martensitic ekwazi ukumelana nobushushu ngokuqhelekileyo inomxholo wechromium we-7 ukuya kwi-13%, kwaye inamandla aphezulu obushushu, ukuxhathisa i-oxidation kunye nokumelana nomphunga wamanzi ongaphantsi kwama-650 ° C, kodwa ukuwelda kwayo kumbi.
Intsimbi yeFerritic ekwazi ukumelana nobushushu iqulethe izinto ezininzi ezinje ngechromium, ialuminiyam, isilicon, njl.njl., yenza ilungiselelo le-ferrite yenqanaba elinye, inamandla abalaseleyo okuxhathisa i-oxidation kunye nobushushu obuphezulu berhasi corrosion, kodwa inamandla asezantsi obushushu kunye nokuqina okukhulu kwiqondo lobushushu begumbi. . , ukuwelda kakubi. I-pearlite i-alloy yensimbi ekwazi ukumelana nobushushu ininzi i-chromium kunye ne-molybdenum, kwaye isixa esipheleleyo asidluli kwi-5%.
Ukhuseleko lwayo alubandakanyi i-pearlite, i-ferrite, kunye ne-bainite. Olu hlobo lwentsimbi lunamandla amakhulu obushushu obuphezulu kunye nomsebenzi wenkqubo kwi-500 ～ 600 ℃, kwaye ixabiso liphantsi.
Isetyenziswa ngokubanzi ukwenza iindawo ezikwaziyo ukumelana nobushushu ngaphantsi kwe-600 ℃. Njengemibhobho yensimbi yebhoyili, i-impellers ye-turbine, i-rotors, i-fasteners, iinqanawa zoxinzelelo oluphezulu, iipayipi, njl.
Ixesha lokuposa: Jan-19-2020