TUNGSTEN
Tungsten welding rods are commonly used in gas tungsten arc welding (GTAW) or tungsten inert gas (TIG) welding. Tungsten is a rare and extremely hard metal that has the highest melting point of any metal, which makes it ideal for use in welding. Here are some reasons why someone might use tungsten welding rods:
High melting point: Tungsten has the highest melting point of any metal, which means that it can withstand high temperatures without melting or deforming. This makes it ideal for welding applications where high temperatures are required.
Non-consumable electrode: Tungsten is a non-consumable electrode, which means that it does not melt and become part of the weld. This is important in applications where the weld needs to be free from contamination.
Low thermal expansion: Tungsten has a low thermal expansion coefficient, which means that it does not expand or contract significantly when it is heated or cooled. This helps to maintain the integrity of the weld and prevents cracking or distortion.
Good conductivity: Tungsten has a high thermal conductivity, which means that it can transfer heat quickly and efficiently. This makes it ideal for welding applications where precise control of the heat input is required.
Corrosion resistance: Tungsten is highly resistant to corrosion, which makes it ideal for use in welding applications where the weld needs to be resistant to corrosion.
Overall, tungsten welding rods are preferred in applications where high-quality welds are required, and where precision and control are essential.
Safety of Thoriated Tungsten
Hazards
Thorium has slight radioactivity and emits alpha particles and occasionally some Beta and Gamma radiation. The levels are extremely low and external exposure risk is low. However, when ingested or inhaled this risk is increased.
The Cause
Because welders need to grind the tips to prepare the rod for welding this creates dust particles that can be inhaled or ingested. It is recommended to wear appropriate safety gear as laid out in welding procedures.
Storage
Thoriated tungsten is recommended to be stored in a steel box.
v3 NON-RADIOACTIVE ALTERNATIVE TO 2% THORIATED TUNGSTEN
Produced using a combination of 3 oxides: 1.5% Lanthanum, 0.08% Zirconium, 0.08% Yttrium.
PRODUCT FEATURES:
- Superior electrode life and arc stability (compared to 2% Thoriated)
- Runs cooler than most other types of Tungsten offering a very long service life
- Fast reliable arc
- Suitable for both AC and DC welding
- Electrodes are eddy current tested for defects ensuring product reliability