Ngokwezinqubo zemboni emkhakheni wemishini esindayo, i-forging yamahhala ekhiqizwa kusetshenziswa umshini wokunyathelisa we-hydraulic onamandla okubumba amathani angaphezu kwe-1000 ingabizwa ngokuthi i-forging enkulu. Ngokusekelwe kumthamo wokubumba wemishini yokunyathelisa esebenza ngomshini wokunyathelisa ngokufoja mahhala, lokhu kucishe kufane nokufogetha kwe-shaft enesisindo esingaphezu kwamathani angu-5 kanye nama-disc forging anesisindo esingaphezu kwamathani angu-2.
Izici eziyinhloko neziyisisekelo zama-forgings amakhulu ubukhulu bazo obukhulu nesisindo esinzima. Isibonelo, usayizi we-600MW ye-steam turbine generator rotor forging ngu-φ1280mm×16310mm, enesisindo samathani angu-111.5. Usayizi we-2200-2400MW ye-steam turbine generator forging rotor ngu-φ1808mm×16880mm, enesisindo samathani angama-247.
Ngenxa yobukhulu bawo obukhulu nesisindo, ama-forging amakhulu kufanele akhiwe ngokuqondile kusuka kuma-ingots ensimbi amakhulu. Kwaziwa kahle ukuthi izinsimbi ezinkulu zensimbi zivame ukuba nezinkinga ezingathi sína njengokuhlukaniswa, ukuqina, ukuncipha, ukufakwa okungezona ezensimbi, kanye nezinhlobo ezahlukahlukene zokungafani kwesakhiwo. Futhi bavame ukuba nokuqukethwe kwegesi ephezulu, futhi lezi ziphambeko kunzima ukuzisusa ngesikhathi sezinqubo zokubumba ezilandelayo. Ngenxa yalokho, ukungafani kokwakheka kwamakhemikhali okubalulekile, ukonakala okuhlukahlukene kwesakhiwo, namazinga aphezulu okuqukethwe kwegesi eyingozi kuvame ukuba khona kuma-forging amakhulu. Lokhu kwenza inqubo yokwelapha ukushisa kwama-forgings amakhulu ibe yinkimbinkimbi, idle isikhathi, futhi ibize. Ngakho-ke, ukunakwa ngokucophelela kufanele kukhokhwe ngesikhathi sokwelashwa kokushisa.
Ngaphezu kwalokho, ngenxa yobukhulu bawo obukhulu nesisindo, ama-forging amakhulu anamandla okushisa aphezulu kakhulu, okwenza kungenzeki ukufeza amazinga okushisa aphezulu kanye nokupholisa phakathi nezinyathelo zokwelashwa kokushisa. Ngakho-ke, kuma-forgings amakhulu adinga izinguquko eziphawulekayo esakhiweni sangaphakathi ngokusebenzisa ukushisa noma ukucisha ukuze kuhlangatshezwane nezidingo zokusebenza okuphezulu nekhwalithi, i-austenite eqinile kakhulu eqinile kanye nezinsimbi eziphezulu zokuqina kufanele zisetshenziswe. Izibonelo zifaka izinsimbi zochungechunge lwe-Ni-Cr-Mo, i-Ni-Mo-V, ne-Ni-Cr-Mo-V. Kodwa-ke, izinsimbi ezinokuzinza okuphezulu kwe-austenite ene-supercooled athambekele ekuzuzeni ifa lesakhiwo, okuholela kusayizi wokusanhlamvu omahhadlahhadla futhi ongalingani kuma-alloy steel forgings. Ukubhekana nalolu daba, izinqubo ezikhethekile neziyinkimbinkimbi zokwelashwa kokushisa zivame ukudingeka.
Uma udinga ulwazi olwengeziwe mayelana ne-WELONG forgings ye-steam turbine ne-generator, sicela ukhululeke ukuxhumana
Isikhathi sokuthumela: Jan-23-2024
