GB/T9948Umbhobho wentsimbi engenamthungo wokuqhekeka kwepetroleum ngumbhobho ongenamthungo ofanelekileyo kwiityhubhu zesithando somlilo, izitshintshi zobushushu kunye nemibhobho kwiindawo zokucoca ipetroleum. Intsimbi yesakhiwo sekhabhoni esemgangathweni ophezulu, intsimbi yesakhiwo se-alloy kunye nentsimbi engenasici engatshiyo imibhobho eqinileyo engenamthungo esetyenziswa ukwenza imibhobho yebhoyila yomphunga enoxinzelelo oluphezulu nangaphezulu. Le mibhobho yebhoyila isebenza phantsi kobushushu obuphezulu kunye noxinzelelo, kwaye imibhobho ivezwa kumsi wobushushu obuphezulu. I-oxidation kunye nokugqwala kuya kwenzeka phantsi kwesenzo segesi kunye nomphunga wamanzi. Ke ngoko, imibhobho yentsimbi kufuneka ibe namandla ahlala ixesha elide, ukumelana ne-oxidation ephezulu, kunye nozinzo oluhle lombutho. Ukongeza ekuqinisekiseni ukwakheka kweekhemikhali kunye neempawu zoomatshini, imibhobho yebhoyila enoxinzelelo oluphezulu kufuneka yenze uvavanyo loxinzelelo lwe-hydraulic nganye nganye, kubandakanya uvavanyo lokwandisa kunye nolwe-flatting. Imibhobho engenamthungo enoxinzelelo oluphezulu ihanjiswa kwimeko yonyango lobushushu.
Iindlela zokuvelisa kunye neendlela zokwenza iipayipi zokuqhekeka kwepetroliyam:

① Ngokubanzi, ubushushu benkonzo yemibhobho yentsimbi engenamthungo bungaphantsi kwama-450°C. Imibhobho yasekhaya yenziwe kakhulu ngeNombolo 10, Nombolo 20,12CrMo, 15CrMo, 12CrlMo, 12CrlMoV, 12Cr5MoI, 12Cr9MoI, imibhobho eqengqelekayo eshushu okanye imibhobho etsalwa kubanda.

② Iipayipi zentsimbi ezisemgangathweni ezingenamthungo ze-GB9948 zihlala zichaphazeleka kubushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu xa zisetyenziswa. Iipayipi ziya kunyibilika kwaye zibole phantsi kwesenzo segesi yobushushu obuphezulu kunye nomphunga wamanzi. Iipayipi zentsimbi kufuneka zibe namandla ahlala ixesha elide, zixhathise kakhulu kwi-oxidation kunye nokugqwala, kwaye zibe nozinzo oluhle kwisakhiwo.

sebenzisa:

① Ngokubanzi, imibhobho yentsimbi engenamthungo isetyenziselwa kakhulu ukwenza imibhobho yamanzi eludongeni, imibhobho yamanzi abilayo, imibhobho yomphunga eshushu kakhulu, imibhobho yomphunga eshushu kakhulu yeebhoyila zelocomotive, imibhobho yomsi emikhulu nemincinci kunye nemibhobho yezitena ze-arch, njl.

Umbhobho wentsimbi engenamthungo we-②GB9948 usetyenziswa kakhulu ekwenzeni iityhubhu ze-superheater, iityhubhu ze-reheater, iityhubhu zesikhokelo somoya, iityhubhu eziphambili zomphunga, njl.njl. kwiibhoyila ezinoxinzelelo oluphezulu kunye noxinzelelo oluphezulu kakhulu.

Iipayipi zentsimbi ezisemgangathweni ezingenamthungo ze-GB9948 zahlulwe zaba ziipayipi zebhoyila eziqhelekileyo kunye neepayipi zebhoyila ezinoxinzelelo oluphezulu ngokwendlela ezisebenza ngayo kubushushu obuphezulu. Nokuba ziityhubhu zebhoyila eziqhelekileyo okanye iityhubhu zebhoyila ezinoxinzelelo oluphezulu, zinokwahlulwa zibe ziipayipi zentsimbi ezahlukeneyo ngokweemfuno zazo ezahlukeneyo zokusetyenziswa.
Umbhobho wentsimbi engenamthungo we-GB/T9948, ububanzi bangaphandle buyi-10 ~ 426mm, ubukhulu bodonga buyi-1.5 ~ 26mm. Ububanzi bangaphandle kunye nobukhulu bodonga lweetyhubhu zomphunga ezishushu kakhulu, iityhubhu ezinkulu zomsi, iityhubhu zomsi ezincinci kunye neetyhubhu zezitena ze-arch ezisetyenziswa kwiibhoyila zelocomotive zichazwe ngenye indlela.

Umgangatho wenkangeleko: Akukho mifantu, imigobo, imiqulu, amaxolo, ukuqhekeka kunye nemigca yeenwele ezivumelekileyo kumphezulu wangaphakathi nangaphandle wemibhobho yentsimbi. Ezi ziphene kufuneka zisuswe ngokupheleleyo. Ubunzulu bokucoca abuyi kudlula ukuphambuka okungalunganga kobukhulu bodonga obuqhelekileyo, kwaye ubukhulu bodonga kwindawo yokucoca abuyi kuba ngaphantsi kobukhulu bodonga obuvumelekileyo.