説明
特徴
LKE-12018-G is a low hydrogen electrode for the welding of 830 N/mm² grade high tensile steel. With excellent crack resistance, good mechanical property and bead appearance. It is provided with good arc and easy slag removal.
アプリケーション
It is suitable for welding of heat treatable low alloy steel such as SCM21/4 Cr-Mo steel,SNCM8 Ni-Cr-Mo steel. Proper base metals are also including forging cast iron(ASTM A486 Gr.120/A508 Gr.5a.4a),pressure vessel steel plate (A543 Gr.B3C3),ect.
使用上の注意
1.Dry the electrodes at 350-400°C for 60 minutes and keep at 100-150°C before use.
2.Preheat the plates at 150-200°C is before welding.
3.Keep the arc as short as possible.
4.Take the back-step method at the arc starting to prevent blowholes.
分類
AWS A5.5 E12018-G
EN EN757 E 79 5 Mn2NiMo B 3 2
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 | ニー | モ | Cr | V |
| 0.06 | 1.40 | 0.40 | 0.025 | 0.003 | 2.0 | 0.4 | 0.7 | 0.008 |
溶接金属の代表的な機械的性質
| YP N/mm² | TS N/mm² | EL % | IV -50℃ J |
| 840 | 920 | 22 | 50 |
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 | 120-150 | 160-200 | 180-240 |
| V&OH | 105-125 | 130-150 | – | |
| 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 | |
