Txheej txheem cej luam ntawm Cryogenic nickel phaj
Cov phaj nickel cryogenic zoo heev rau cov ntawv thov uas raug rau qhov kub qis heev. Lawv yog siv rau kev thauj cov roj av liquefied natural (LNG) thiab cov roj av liquefied (LPG).
A 645 Gr A / A 645 Gr B, txo nqi thiab nce kev nyab xeeb hauv kev tsim kho ethylene thiab LNG tank.
Cov chaw tsim khoom zoo tshaj plaws ua rau peb muaj peev xwm tsim cov hlau qib A 645 Gr A thiab Gr B nrog rau cov hlau nickel 5% thiab 9% ib txwm muaj.
● LNG
Cov roj av yog liquefied ntawm qhov kub qis heev ntawm -164 ° C, ua rau nws lub ntim me me los ntawm ib qho ntawm 600. Qhov no ua rau nws khaws cia thiab thauj mus los tau thiab ua tau zoo. Ntawm qhov kub qis heev no, kev siv cov hlau nickel tshwj xeeb 9% yog qhov tsim nyog kom lav qhov ductility txaus thiab tiv taus brittle cracking. Peb muab cov phaj dav dav rau qhov kev lag luam no, txawm tias nyob rau hauv thicknesses txog li 5 hli.
● LPG
Cov txheej txheem LPG yog siv los tsim cov propane thiab ua cov pa roj los ntawm cov roj ntuj. Cov pa roj no tau ua kua ntawm chav tsev kub ntawm qhov siab qis thiab khaws cia rau hauv cov thoob tshwj xeeb ua los ntawm 5% nickel hlau. Peb muab cov phaj plhaub, lub taub hau thiab lub khob hliav qab los ntawm ib qho chaw.
Piv txwv li, siv ASTM A 645 Gr B Phaj.
● Siv A 645 Gr A rau kev tsim cov ethylene tanks muab kwv yees li 15% lub zog siab dua, kev nyab xeeb ntxiv thiab qhov ua tau ntawm kev txo cov phab ntsa tuab rau kev txuag nyiaj ntau hauv kev tsim lub tank.
● ASTM A 645 Gr B ua tiav cov khoom siv zoo ib yam li cov hlau nickel 9% ib txwm muaj hauv LNG cia tab sis ua tau raws li cov kev cai no nrog kwv yees li 30% qis dua nickel. Ib qho txiaj ntsig ntxiv yog txo cov nqi hauv kev tsim cov tso tsheb LNG hauv hiav txwv thiab hauv kev tsim cov tso tsheb roj LNG.
Qhov zoo tshaj plaws rau qib kev ruaj ntseg siab tshaj plaws
Lub hauv paus ntawm peb cov phaj nickel zoo yog cov slabs purity siab los ntawm peb tus kheej lub Hoobkas ua hlau. Cov pa roj carbon tsawg heev lav qhov zoo meej weldability. Lwm qhov zoo dua pom nyob rau hauv cov khoom lub zog zoo heev thiab cov khoom tawg (CTOD). Tag nrho cov phaj nto raug kuaj ultrasonic. Lub magnetism seem yog qis dua 50 Gauss.
Kev ua ua ntej kom tau raws li cov kev xav tau tshwj xeeb ntawm cov neeg siv khoom
● Xuab zeb-blasted los yog xuab zeb-blasted thiab primed.
● Kev npaj cov npoo vuam: Qhov tsawg kawg nkaus ntawm cov npoo hlawv ua rau tawv dua vim muaj cov pa roj carbon tsawg.
● Phaj khoov.
Cov Qib Hlau ntawm Cryogenic Nickel Phaj Jindalai Tuaj Yeem Muab Khoom
| Pawg hlau | Tus qauv qib hlau | Cov qib hlau |
| 5% cov hlau nickel | EN 10028-4 / ASTM/ASME 645 | X12Ni5 A/SA 645 Qib A |
| 5.5% cov hlau nickel | ASTM/ASME 645 | A/SA 645 Qib B |
| 9% nickel hlau | EN 10028-4 / ASTM/ASME 553 | X7Ni9 A/SA 553 Hom 1 |
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