説明
特徴
LKE-9018-B91 is designed to weld equivalent ‘type T91’ CrMo steels modified with small additions of niobium and vanadium to give improved long term creep properties. These consumables are specifically intended for high integrity structural service at elevated temperature so the minor alloy additions responsible for its creep strength are kept above the minimum considered necessary to ensure satisfactory performance.
アプリケーション
It is suitable for welding of the steel such as ASTM A213-T91, A335 P91, A387 Gr.91,A182 F91.
使用上の注意
1.Dry the electrodes at 350-400°C for 60 minutes before use.
2.Do not exceed the range of recommended because over heat input might decrease the impact value.
3.Keep the arc as short as possible.
4.Take the back-step method at the arc starting to prevent blowholes.
5.Preheat the workpiece at 250-350°C and proceed PWHT.
分類
AWS A5.5 E9018-B91
溶接の位置
典型的な溶接金属の化学成分 (wt%)
| C | ムン | Si | P | S | Cr | モ | Nb | V | ニー |
| 0.09 | 0.9 | 0.30 | 0.01 | 0.009 | 9.0 | 1.00 | 0.06 | 0.20 | 0.6 |
溶接金属の代表的な機械的性質
| YP N/mm² | TS N/mm² | EL % | PWHT |
| 550 | 700 | 20 | 740°C x1hr |
サイズと推奨電流範囲（ACまたはDC+)
| 直径 (mm) | 3.2 | 4.0 | 5.0 | |
| 長さ (mm) | 350 | 450 | 450 | |
| アンペア | F | 80-130 | 100-160 | 160-210 |
| V&OH | 70-110 | 80-130 | – | |
| パックあたりの重量（kg） | 5 | 5 | 5 | |
| カートンあたりの重量（kg） | 20 | 20 | 20 | |
