Achemetal Tungsten & Molybdenum Co., Ltd.
Subtlety and perseverance
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Tungsten electrodes for gas shielded argon arc welding TIG electrodes
The significance of the lanthanum-tungsten electrode as an alternative to the tungsten-thorium electrode is first and foremost in the avoidance of radioactive hazards. The electrical conductivity of lanthanum tungsten 15 (1.5% lanthanum oxide) is closer to that of the 2% thoriated tungsten electrode, so that the electric welder can easily and quickly replace the thoriated tungsten electrode with this electrode without any change in the welding procedure and be protected from the radioactive hazards of thoriated tungsten electrodes. This changeover is easy and comfortable both under AC and DC conditions. Another advantage of the lanthanum tungsten electrode is its durability, high current and low burn-out rate.
Specification | Color mark | Grade | Content of lanthanum oxide(+—0.2%) |
| Black | WL10 | 1% |
| Golden | WL15 | 1.5% |
| Sky blue | WL20 | 2% |
Feature
Low electronic function
Good conductivity
Good electron emission ability
Good mechanical cutting performance
High elastic modulus, Low vapour pressure
High recrystallization temperature
Diameter and Tolerance
| Diameter | Diameter tolerance | Length | Length tolerance | |
| mm | inch | mm | mm | mm |
| 1 | 1/25 | (+/-)0.01 | 50,75,150,175 | (+/-)1.0 |
| 1.2 | 6/125 | (+/-)0.01 | 50,75,150,175 | (+/-)1.0 |
| 1.6 | 1/16 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
| 2 | 2/25 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
| 2.4 | 3/32 | (+/-)0.02 | 50,75,150,175 | (+/-)1.0 |
| 3 | 3/25 | (+/-)0.03 | 50,75,150,175 | (+/-)1.0 |
| 3.2 | 1/8 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 4 | 5/32 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 4.8 | 3/16 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 5 | 1/5 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 6 | 15/64 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 6.4 | 1/4 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 8 | 5/16 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
| 10 | 2/5 | (+/-)0.04 | 50,75,150,175 | (+/-)1.0 |
Production Process
Application
tungsten welding electrode:
1. It used when arc welding with the Tungsten Inert gas (TIG) process or when plasma welding.
2. In both processes the electrode, arc and weld pool are protected from atmospheric contamination by an inert gas.
3. It used because it can withstand very high temperatures with minimal melting or erosion.
4. it made by powder metallurgy and are formed to size after sintering.
Packing & Delivery