I-Super Stainless Steel 904L/N08904 Ipleyiti, iTubing, intonga, ukuQinisa

Ngenxa yokuba umxholo wekhabhoni we-904L uphantsi kakhulu (u-0.020% ubuninzi), akuyi kubakho imvula ye-carbide kwimeko yonyango olushushu oluqhelekileyo kunye ne-welding.Oku kuphelisa umngcipheko we-intergranular corrosion eyenzeka ngokuqhelekileyo emva konyango lobushushu kunye ne-welding.Ngenxa yomxholo ophezulu we-chromium-nickel-molybdenum kunye nokongezwa kobhedu, i-904L inokugqithiswa nakwiindawo ezinciphisa ezifana ne-sulfuric kunye ne-formic acids.Umxholo ophezulu we-nickel uphinde ubangele izinga eliphantsi lokubola kwimeko esebenzayo.Kwi-asidi ye-sulfuric ecocekileyo kwi-concentration range ye-0 ~ 98%, ubushushu bokusebenza be-904L bunokuba buphezulu kwi-40 degrees Celsius.Kwi-asidi ye-phosphoric ecocekileyo kwi-concentration range ye-0 ~ 85%, ukuxhathisa kwayo kwe-corrosion kuhle kakhulu.Kwi-acid ye-industrial phosphoric eveliswa yinkqubo emanzi, ukungcola kunempembelelo enamandla kwi-corrosion resistance.Kuzo zonke iiasidi ze-phosphoric ezahlukeneyo, i-904L inokumelana nokugqwala ngakumbi kunentsimbi eqhelekileyo engenasici.Kwi-asidi ye-nitric ene-oxidizing eyomeleleyo, i-904L inokumelana ne-corrosion ephantsi kunamabakala ensimbi ane-alloyed ephezulu angenayo i-molybdenum.Kwi-hydrochloric acid, ukusetyenziswa kwe-904L kunqunyelwe kwiindawo ezisezantsi ze-1-2%.kolu luhlu loxinaniso.Ukuxhatshazwa kwe-corrosion ye-904L kungcono kuneyentsimbi yesiqhelo.I-904L yentsimbi inokuxhathisa okuphezulu kwi-corrosion.Ukuxhathisa kwayo kwi-corrosion ye-crevice kwi-chloride isisombululo nako kuhle kakhulu.Umxholo we-nickel ophezulu we-904L unciphisa izinga lokubola emigodini kunye neengcingo.Iintsimbi eziqhelekileyo ze-austenitic ezingenasici zinokuthi zithintele ukunyanzeliswa kwe-corrosion kwindawo ene-chloride ecebileyo kumaqondo okushisa angaphezu kwama-60 ° C, kwaye oku kuqonda kunokunciphisa ngokunyusa umxholo we-nickel wensimbi engenasici.Ngenxa yomxholo ophezulu we-nickel, i-904L ixhathisa kakhulu ukunyanzeliswa kwe-corrosion cracking kwi-chloride solutions, i-concentrated hydroxide solutions kunye ne-hydrogen sulfide ecebileyo.