Umbhobho wentsimbi ye-alloy engenamthungoI-ASTM A335 P11sisixhobo sentsimbi esenziwe nge-chromium-molybdenum alloy, kwaye igama laso elihambelanayo nesiTshayina yi15CrMoGLe nto inamandla aphezulu obushushu kunye nokumelana nokurhubuluza, kwaye ifanelekile kwiimeko zokusebenza ezishushu kakhulu kunye noxinzelelo oluphezulu. Isetyenziswa kakhulu kumashishini afana namandla kunye namandla, kunye neekhemikhali zepetrochemicals.
Ngokuphathelele ukwakheka kweekhemikhali, izinto ze-P11 ziqulethe malunga ne-1.00% - 1.50% ye-chromium kunye ne-0.44% - 0.65% ye-molybdenum. Olu didi lwe-alloy luyenza ikwazi ukugcina iipropati zoomatshini ezizinzileyo phantsi kweemeko zobushushu obuphezulu. Into ye-chromium inceda ekwakheni umaleko we-oxide exineneyo, iphucula ukuchasana nokubola kwezinto kunye nokumelana nokugqwala, ngelixa into ye-molybdenum iphucula kakhulu amandla aphezulu kunye nokumelana nokuqhekeka kwezinto.
Kwishishini lamandla namandla, imibhobho yentsimbi engenamthungo ye-ASTM A335 P11 isetyenziswa kakhulu kwiinkqubo zemibhobho ezinobushushu obuphezulu noxinzelelo oluphezulu kwizityalo zamandla ezishushu. Zihlala zisetyenziselwa ukuvelisa izinto ezibalulekileyo ezifana nee-boiler superheaters, ii-reheaters, kunye nemibhobho ephambili yomphunga. Ezi zinto zihlala zifuna ukusebenza ngokuthembekileyo ixesha elide kwindawo enobushushu obuphezulu ukusuka kwi-540°C ukuya kwi-570°C. Ezi zinto zinokumelana noxinzelelo oluphezulu lwangaphakathi kwaye zixhathise ukubola kwe-oxidation okuvela kumphunga obushushu obuphezulu, ukuqinisekisa ukusebenza okukhuselekileyo nokuzinzileyo kwezityalo zamandla.
Kwishishini le-petrochemical, iipayipi zentsimbi ze-P11 zisetyenziswa kakhulu kwizixhobo ezahlukeneyo zenkqubo yobushushu obuphezulu. Zihlala zisetyenziswa ukuvelisa iityhubhu zesithando sokuqhekeka, iityhubhu zesithando sokuguqula, kunye neenkqubo zepayipi zokucubungula i-hydrogenation, phakathi kwezinye. Ezi pipes kufuneka zimelane nemiphumo yemidiya ye-hydrocarbon enobushushu obuphezulu. Amandla aphezulu obushushu obuphezulu kunye nokumelana nokugqwala kwezinto kwenza ukuba zikwazi ukuziqhelanisa neemeko ezinzima zemveliso ye-petrochemical, ukuqinisekisa ukusebenza okuzinzileyo kwexesha elide kwezixhobo.
Kwishishini lamandla enyukliya, imibhobho yentsimbi ye-P11 isetyenziswa kakhulu kwiinkqubo zemibhobho yokuncedisa. Nangona imibhobho yomgangatho wenyukliya idla ngokusebenzisa izixhobo zomgangatho ophezulu, i-P11 isasetyenziswa kwiinkqubo zokuncedisa ezingezizo zenyukliya, ezifana neenkqubo zokutshintshiselana kobushushu kunye neenkqubo zokubonelela ngamanzi, ezibonelela ngenkxaso yokusebenza okuthembekileyo kwezityalo zamandla enyukliya.
Ngexesha lokucubungula nokuvelisa esi sixhobo, kufuneka kuqwalaselwe ngokukodwa inkqubo yokudibanisa. Ngaphambi kokudibanisa, kufuneka kufudunyezwe i-200-250°C. Kufuneka kusetyenziswe ii-electrode zohlobo lwe-hydrogen ephantsi, kwaye kufuneka unyango lobushushu olukhawulezileyo kwi-680-720°C emva kokudibanisa. La manyathelo anokuphelisa uxinzelelo lokudibanisa, aphucule isakhiwo sokudibanisa, kwaye athintele ukwakheka kwemifantu ebandayo. Ngexesha lokufakelwa kombhobho, inkxaso efanelekileyo kunye noseto lwe-hanger ziyafuneka ukuqinisekisa ukuba inkqubo yombhobho inokwandiswa ngokukhululekileyo kwaye iphephe ukuveliswa koxinzelelo olongezelelweyo lobushushu.
Ngokuphuhliswa kweshishini lamandla, imfuno yemibhobho enobushushu obuphezulu kunye noxinzelelo oluphezulu iyaqhubeka nokukhula. I-ASTM A335 P11, njengesixhobo semibhobho esiphakathi esivuthiweyo nesithembekileyo, isaza kudlala indima ebalulekileyo ekugcinweni nasekuhlaziyweni kwezixhobo ezikhoyo. Ngokuphucula uyilo lolwakhiwo kunye nenkqubo yokuvelisa, ukusebenza kwesi sixhobo kuya kuphucuka ngakumbi, kubonelelwe ngenkxaso engcono yezinto zophuhliso lwamacandelo ahlukeneyo emizi-mveliso.
Imibhobho yentsimbi ye-ASTM A335 P11 engenamthungo, ngenxa yokusebenza kwayo okugqwesileyo kumaqondo obushushu aphezulu kunye neendleko ezingabizi kakhulu, igcina ixabiso elikhulu lokusetyenziswa kwicandelo lobunjineli bamandla kunye neekhemikhali. Ukuze ukhethe ngokuchanekileyo kwaye usebenzise le nto ngokufanelekileyo, kufuneka ukuqonda okubanzi kunye nokuqonda iimpawu zayo zokusebenza kunye neemfuno zokusetyenziswa.