SA516 GR 70 Zotengera Zitsulo za Pressure

Chitsulo chotengera zitsulo chimakwirira mitundu ingapo yachitsulo yomwe idapangidwira kuti igwiritsidwe ntchito muzotengera zokakamiza, ma boilers, kusinthanitsa kutentha ndi chotengera china chilichonse chomwe chimakhala ndi gasi kapena madzi pamavuto akulu. Zitsanzo zodziwika bwino ndi monga masilinda agasi ophikira ndi kuwotcherera, masilinda a okosijeni odumphira m'madzi ndi matanki akuluakulu azitsulo ambiri omwe mumawawona m'malo oyenga mafuta kapena malo opangira mankhwala. Pali mitundu yambiri yosiyanasiyana ya mankhwala ndi madzi omwe amasungidwa ndi kukonzedwa mopanikizika. Izi zimachokera ku zinthu zopanda thanzi monga mkaka ndi mafuta a kanjedza mpaka mafuta osakanizika ndi gasi wachilengedwe ndi ma distillates ake kupita ku zidulo zakupha kwambiri ndi mankhwala monga methyl isocyanate. Choncho mwa njirazi zimafunika mpweya kapena madzi kuti azitentha kwambiri, pamene zina zimakhala ndi kutentha kotsika kwambiri. Chifukwa chake, pali mitundu ingapo yamitundu yosiyanasiyana yazitsulo zachitsulo zomwe zimakwaniritsa zochitika zosiyanasiyana zogwiritsira ntchito.

Mwambiri, awa akhoza kugawidwa m'magulu atatu. Pali gulu la carbon zitsulo kuthamanga chotengera makalasi. Izi ndizitsulo zokhazikika ndipo zimatha kuthana ndi ntchito zambiri pomwe pamakhala dzimbiri komanso kutentha pang'ono. Monga kutentha ndi dzimbiri zimakhudza kwambiri mbale zachitsulo chromium, molybdenum ndi faifi tambala amawonjezeredwa kuti apereke kukana kwina. Pomaliza pamene % ya chromium, faifi tambala ndi molybdenum zikuchulukira muli ndi zitsulo zosapanga dzimbiri zolimba kwambiri zomwe zimagwiritsidwa ntchito pazovuta kwambiri komanso komwe kuipitsidwa kwa oxide kuyenera kupewedwa - monga m'mafakitale azakudya ndi mankhwala.