Core Function
During the TIG (Tungsten Inert Gas) welding process, the ceramic nozzle serves two functions:
1.Guide the shielding gas (such as argon)
Allow the gas to flow uniformly towards the welding pool, forming a protective gas shield.
2. Prevent oxidation contamination
Isolate the oxygen and nitrogen in the air to prevent the welds from oxidizing or forming pores.
Material Properties
| Item | Test Condition | Unit | 95%Al2O3 | Inspection Standard | |
| Density | – | g/cm³ | ≥3.70 | GB/T 25995-2010 | |
| Mechanical Property | Vickers Hardness | HV1 | GPa | 12 | GB/T 16534-2009 |
| Flexure Strength | – | MPa | 350 | GB/T 6569-2006 | |
| Thermal Property | Coefficient of Linear Thermal Expansion | 40℃~400℃ | x10-6/℃ | 7.2 | GB/T 16535-2008 |
| 40℃~800℃ | 7.5 | ||||
| Thermal Conductivity | 25℃ | W/(m·K) | 23 | GB/T 5598-2015 | |
| Electrical Properties | Volume Resistivity | 20℃ | Ω·cm | >1014 | GB/T 5593-2015 |
| 300℃ | >1010 | ||||
| 500℃ | >108 | ||||
| Breakdown Strength | – | kV/mm | >15 | ||
| Dielectric Constant | 1MHz | – | 9.5 | ||
| Dielectric Loss | 1MHz | x10-4/℃ | 4 | ||
Features
Heat-resistant,
Corrosion-resistant and highly insulating
High strength
Typical Applications
– Stainless Steel Welding
– Aluminum Alloy Welding
– Titanium Alloy Welding
– Pipe Welding
– Precision structural component welding
– Industrial Equipment Manufacturing
Innovacera offers a variety of TIG ceramic nozzles in different sizes and nozzle specifications to meet the requirements of various welding applications. View the product catalogue for detailed dimensions.
Declaration: This is an original article of INNOVACERA®. Please indicate the source link when reprinting: https://www.innovacera.com/product/ceramic-gas-nozzles-for-tig.
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