产品详情
OK 73.68为一款2.5%镍合金化LMA焊条，适合用于焊接温度低至-60°C条件下具有冲击强度要求的低合金钢。焊缝金属成分相当优异，在立向上焊时仍可获得低温冲击性能。OK 73.68的焊缝金属还具有优良的耐海水和耐硫酸烟雾性能。
Typical Tensile Properties
| As welded | |||||
| Elongation | Tensile Strength | Yield Strength | 保护气体 | Stress Relieved Temperature | Stress Relieved Testing Time |
| 28 % | 615 MPa | 540 MPa | ISO | - | - |
| Stress relieved | |||||
| Elongation | Tensile Strength | Yield Strength | 保护气体 | Stress Relieved Temperature | Stress Relieved Testing Time |
| 28 % | 600 MPa | 500 MPa | AWS | 620 °C | 1 hr |
夏比V型缺口冲击性能
| As welded | ||||
| Impact Value | Testing Temperature | 保护气体 | Stress Relieved Testing Temp | Stress Relieved Testing Time |
| 105 J | -60 °C | ISO | - | - |
| 65 J | -80 °C | ISO | - | - |
| Stress relieved | ||||
| Impact Value | Testing Temperature | 保护气体 | Stress Relieved Testing Temp | Stress Relieved Testing Time |
| 85 J | -60 °C | AWS | 620 °C | 1 hr |
焊缝金属分析
| Mn | |||||
| Mn | Mo | C | Si | Ni | Cr |
| 1 % | - | - | - | - | - |
| Mo | |||||
| Mn | Mo | C | Si | Ni | Cr |
| - | 0.01 % | - | - | - | - |
| C | |||||
| Mn | Mo | C | Si | Ni | Cr |
| - | - | 0.05 % | - | - | - |
| Si | |||||
| Mn | Mo | C | Si | Ni | Cr |
| - | - | - | 0.35 % | - | - |
| Ni | |||||
| Mn | Mo | C | Si | Ni | Cr |
| - | - | - | - | 2.4 % | - |
| Cr | |||||
| Mn | Mo | C | Si | Ni | Cr |
| - | - | - | - | - | 0.02 % |
熔敷数据
| Fusion time per electrode at 90% I max | kg weld bl/kg electrodes | Number of electrodes/kg weld bl | 安培 | 熔敷率 | 电压 V | 直径 |
| 55 sec | 0.62 kg | 70.0 | 70-110 A | 0.90 kg/h | 23 V | 2.5 x 350 mm |
| 81 sec | 0.62 kg | 32.0 | 105-150 A | 1.40 kg/h | 23 V | 3.2 x 450 mm |
| 88 sec | 0.65 kg | 21.0 | 140-190 A | 2.00 kg/h | 23 V | 4.0 x 450 mm |
| 104 sec | 0.65 kg | 13.5 | 190-270 A | 2.50 kg/h | 27 V |
5.0 x 450 mm |
