GB/T9948umbhobho wensimbi ongenamthungo wokuqhekeka kwepetroleum ngumbhobho ongenamthungo ofanelekileyo kwiityhubhu zesithando somlilo, ukutshintshiselana kobushushu kunye nemibhobho kwiindawo zokucoca i-petroleum. Umgangatho ophezulu we-carbon structural steel, i-alloy structural iron kunye nentsimbi engasimiyo ekwazi ukumelana nobushushu, imibhobho eqinile engenamthungo isetyenziselwa ukwenza imibhobho yebhoyila yomphunga yoxinzelelo oluphezulu nangaphezulu. Le mibhobho yebhoyili isebenza phantsi kobushushu obuphezulu kunye noxinzelelo, kwaye imibhobho ibonakaliswe kumsi ophezulu wokushisa. I-oxidation kunye ne-corrosion iya kwenzeka phantsi kwesenzo segesi kunye nomphunga wamanzi. Ngoko ke, imibhobho yentsimbi iyadingeka ukuba ibe namandla ahlala ixesha elide, ukuxhathisa okuphezulu kwe-oxidation, kunye nokuzinza okuhle kombutho. Ukongeza ekuqinisekiseni ukubunjwa kweekhemikhali kunye neempawu zoomatshini, imibhobho yebhoyila yoxinzelelo oluphezulu kufuneka kwakhona Enze uvavanyo loxinzelelo lwe-hydraulic nganye nganye, kubandakanya nolwandiso kunye novavanyo lokuthambisa. Imibhobho yoxinzelelo oluphezulu olungenamthungo ihanjiswa kwisimo sokushisa.
Ukuveliswa kwemibhobho yokuqhekeka kwePetroleum kunye neendlela zokwenza:

① Ngokubanzi, ubushushu benkonzo yemibhobho yentsimbi engenamthungo bungaphantsi kwama-450°C. Imibhobho yasekhaya yenziwa ikakhulu kwiNombolo ye-10, iNombolo ye-20,12CrMo, 15CrMo, 12CrlMo, 12CrlMoV, 12Cr5MoI, 12Cr9MoI, imibhobho eshushu okanye imibhobho ebandayo.

② I-GB9948 imibhobho yentsimbi esemgangathweni esemgangathweni ihlala ibonakaliswe kubushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu xa isetyenziswa. Imibhobho iya ku-oxidize kwaye idle phantsi kwesenzo segesi ephezulu yobushushu kunye nomphunga wamanzi. Imibhobho yensimbi iyadingeka ukuba ibe namandla aphezulu, ukuchasana ne-oxidation kunye ne-corrosion, kunye nokuzinza okuhle kwesakhiwo.

sebenzisa:

① Ngokubanzi, imibhobho yentsimbi engenamthungo isetyenziswa ikakhulu ukwenza imibhobho yodonga lwamanzi, imibhobho yamanzi abilayo, imibhobho yomphunga eshushu kakhulu, imibhobho yomphunga eshushu kakhulu yeebhoyila zikaloliwe, imibhobho emikhulu nemincinci yomsi kunye nemibhobho yezitena zearch, njl.

②GB9948 umbhobho wentsimbi ongenamthungo usetyenziswa ikakhulu ukwenza iityhubhu ze-superheater, iityhubhu zokufudumeza, iityhubhu zesikhokelo somoya, imibhobho ephambili yomphunga, njl.

Imibhobho ye-GB9948 esemgangathweni engenamthungo yentsimbi yahlulwe yaba yimibhobho yebhoyila ngokubanzi kunye nemibhobho yebhoyila yoxinzelelo oluphezulu ngokokusebenza kwayo okuphezulu kobushushu. Nokuba iityhubhu zebhoyila ngokubanzi okanye iityhubhu zebhoyila zoxinzelelo oluphezulu, zinokwahlulwa zibe yimibhobho eyahlukeneyo yentsimbi ngokweemfuno zazo ezahlukeneyo zokusetyenziswa.
GB/T9948 umbhobho wentsimbi engenamthungo, ububanzi obungaphandle 10 ~ 426mm, ubukhulu bodonga 1.5 ~ 26mm. Idayamitha yangaphandle kunye nobukhulu bodonga lwetyhubhu zomphunga ezishushu kakhulu, iityhubhu ezinkulu zomsi, iityhubhu ezincinci zomsi kunye neetyhubhu zezitena ezisetyenziswa kwiibhoyila zikaloliwe zichazwe ngenye indlela.

Umgangatho wokubonakala: Akukho zintanda, ukugoba, imiqulu, i-scabs, i-delamination kunye nemigca yeenwele ezivumelekileyo kwiindawo zangaphakathi nangaphandle zemibhobho yensimbi. Ezi ziphene kufuneka zisuswe ngokupheleleyo. Ubunzulu bokucoca abuyi kudlula ukuphambuka okungalunganga kodonga oluqingqiweyo, kwaye ubukhulu bodonga lwangempela kwindawo yokucoca abuyi kuba ngaphantsi kobuncinci obuvumelekileyo bodonga.