Chidule cha mbale za nickel za Cryogenic
Ma mbale a nickel a cryogenic ndi oyenererana bwino ndi ntchito zomwe zimakhala ndi kutentha kotsika kwambiri. Amagwiritsidwa ntchito ponyamula gasi wachilengedwe (LNG) ndi gasi wamafuta amafuta (LPG).
A 645 Gr A / A 645 Gr B, kuchepetsa mtengo ndikuwonjezera chitetezo pakumanga kwa ethylene ndi LNG tank.
Zopangira zamakono zamakono zimapangitsa kuti tithe kupanga zitsulo zonse A 645 Gr A ndi Gr B komanso zitsulo za 5% ndi 9% za nickel.
● LNG
Mpweya wachilengedwe umasungunuka pa kutentha kochepa kwambiri kwa -164 ° C, kucheperachepera mphamvu yake ndi 600. Izi zimapangitsa kuti kusungidwa kwake ndi kayendetsedwe kake kukhala kotheka komanso kogwira mtima. Pakutentha kwambiri kumeneku, kugwiritsa ntchito zida zapadera za nickel 9% ndikofunikira kuti zitsimikizire kuti ductility chokwanira komanso kukana kusweka kwa brittle. Timapereka mbale zokulirapo pamsika uno, ngakhale zonenepa mpaka 5 mm.
● LPG
Njira ya LPG imagwiritsidwa ntchito popanga propane ndikusintha mpweya kuchokera ku gasi wachilengedwe. Mipweya imeneyi imasungunuka kutentha kwa firiji pamtunda wochepa ndipo imasungidwa m'matangi apadera opangidwa ndi 5% nickel steels. Timapereka mbale za zipolopolo, mitu ndi ma cones kuchokera ku gwero limodzi.
Tengani mbale ya ASTM A 645 Gr B Mwachitsanzo
● Kugwiritsa ntchito A 645 Gr A popanga matanki a ethylene kumapereka mphamvu zokulirapo ndi 15%, chitetezo chowonjezereka komanso kuthekera kochepetsera makulidwe a khoma kuti apulumutse ndalama zambiri pomanga thanki.
● ASTM A 645 Gr B imakwaniritsa zinthu zakuthupi zofanana ndi 9% ya zitsulo za faifi tambala mu malo osungira a LNG koma imakwaniritsa zofunikirazi ndi pafupifupi 30% ya nickel yotsika. Chotsatira chake ndi kutsika kwakukulu kwa ndalama zopangira matanki a m'mphepete mwa nyanja ndi m'mphepete mwa nyanja a LNG komanso pomanga matanki amafuta a LNG.
Ubwino wapamwamba kwambiri wachitetezo chapamwamba kwambiri
Maziko a mbale zathu zapamwamba za nickel ndi masilabu oyeretsedwa kuchokera ku chomera chathu chopangira zitsulo. Zochepa kwambiri za carbon zimatsimikizira kutenthedwa bwino. Ubwino winanso umapezeka pakulimba kwamphamvu kwa chinthucho komanso ma fracturing properties (CTOD). Yonse mbale padziko akukumana akupanga kuyezetsa. Maginito otsalira ali pansi pa 50 Gauss.
Preprocessing kukwaniritsa zofunika kasitomala
● Kuphulika kwa mchenga kapena kuphulika ndi kupukuta mchenga.
● Kukonzekera m'mphepete mwa welded: Kuwumitsa pang'ono kwa m'mphepete mwamoto kumatheka chifukwa cha kuchepa kwa carbon.
● Kupinda mbale.
Magulu Azitsulo a Cryogenic Nickel Plates Jindalai Akhoza Kupereka
Gulu lachitsulo | Steel grade standard | Magiredi achitsulo |
5% nickel zitsulo | EN 10028-4 / ASTM/ASME 645 | X12Ni5 A/SA 645 Gawo A |
5.5% nickel zitsulo | ASTM/ASME 645 | A/SA 645 Gulu B |
9% nickel zitsulo | EN 10028-4 / ASTM/ASME 553 | X7Ni9 A/SA 553 Mtundu 1 |