説明
特徴
LKE-7018-H4R is a low hydrogen type electrode for the welding of 490N/mm² grade high tensile steel. It is designed for single and multiple pass applications. The welding can be done with good appearance, stable arc and low spatter. With excellent mechanical properties, impact value at temperature of -40°C and low diffusible hydrogen.
アプリケーション
It is suitable for welding of low alloy steels, medium carbon steels, heavy steel plates, cast steels, aluminum killed steel of LPG and especially for welding of steels with poor weldability.
使用上の注意
1.Dry the electrodes at 350-400°C for 1-2 hours before use.
2.Keep the arc as short as possible to prevent moisture pick-up.
3.Take the back-step method to prevent blowholes at the arc starting.
分類
AWS A5.1 E7018-H4R
EN 2560-A E 42 4 B 4 2 H5
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 |
| 0.070 | 1.10 | 0.50 | 0.02 | 0.004 |
溶接金属の代表的な機械的性質
| YP N/mm² | TS N/mm² | EL % | IV -40℃ J |
| 490 | 560 | 29 | >47 |
サイズと推奨電流範囲（ACまたはDC+)
| 直径 (mm) | 2.6 | 3.2 | 4.0 | 5.0 | |
| 長さ (mm) | 350 | 350 | 450 | 450 | |
| アンペア | F | 80-100 | 130-150 | 160-190 | 200-240 |
| V&OH | 70-100 | 90-150 | 130-160 | 170-200 | |
| パックあたりの重量（kg） | 4/5 | 5 | 5 | 5 | |
| カートンあたりの重量（kg） | 20 | 20 | 20 | 20 | |
