Molybdenum a me Chromium Molybdenum Heat Resistant Steel Weld Electrode
R717
AWS A5.5 E9015-B9
ʻO ka wehewehe ʻana: R717 he electrode kila me ka haʻahaʻa-hydrogen sodium coating i loaʻa ka 9% Cr - 1% Mo-V-Nb.E hoʻohana i ka DCEP (direct current electrode positive) a hiki ke wili ʻia ma nā kūlana āpau.Ma muli o ka hoʻohui ʻana o kahi liʻiliʻi o Nb a me V, ʻoi aku ka maikaʻi o ka metala i hoʻopaʻa ʻia.
Hoʻohana: Hoʻohana ʻia ia no ka hoʻopili ʻana i nā paipu superheated a me nā poʻo o ka wela wela a me nā paila kiʻekiʻe, e like me A213-T91/A335-P1 (T/P91), A387Cr, 91 a me nā hale kila pale wela.
ʻO ka hui kemika o ka weld metala(%):
| C | Mn | Si | Cr | Mo | V | Ni |
| 0.08 ~ 0.13 | ≤1.20 | ≤0.30 | 8.0 ~ 10.5 | 0.85 ~ 1.20 | 0.15 ~ 0.30 | ≤0.80 |
| Nb | Cu | Al | N | S | P |
|
| 0.02 ~ 0.10 | ≤0.25 | ≤0.04 | 0.02 ~ 0.07 | ≤0.01 | ≤0.01 |
|
Hoolaha: Mn+Ni＜1.5%
Nā waiwai mīkini o ka weld metala:
| Mea ho'āʻo | Ka ikaika tensile Mpa | Hua ikaika Mpa | ʻO ka lōʻihi % |
| Hōʻoiaʻiʻo | ≥620 | ≥530 | ≥17 |
Manaʻo ʻia i kēia manawa:
| Anawaena lāʻau （mm） | 2.5 | 3.2 | 4.0 | 5.0 |
| Ke au wiliwili （A） | 60 ~ 90 | 90 ~ 120 | 130 ~ 170 | 170 ~ 210 |
Hoʻolaha:
1. Pono e hoʻomoʻa ʻia ka electrode no 1 hola ma 350 ℃ ma mua o ka hana wili;
2. He mea nui e hoʻomaʻemaʻe i ka ʻōpala, ka ʻaila unahi, ka wai, a me nā haumia ma nā ʻāpana wili ma mua o ka wili ʻana.
3. E hoʻomaʻamaʻa mua i ka ʻāpana weld ma 200 ~ 260 ° C ma mua o ke kuʻi ʻana, a mālama i ka mahana interpass kūpono;
4. Hoʻomaha mālie i ka 80 ~ 100 ° C no nā hola 2 ma hope o ke kuʻiʻana;inā ʻaʻole hiki ke hana ʻia ka hoʻomaʻamaʻa wela i ka hikiwawe, hiki ke hana ʻia ka hana dehydrogenation ma 350°CX 2h.
