Ceramic coating nozzle is suitable for Plasma Tunnel Welding Machine
Ceramic coating nozzles are suitable for a variety of special working conditions in Plasma Tunnel Welding Machines. Their performance advantages can be accurately applied by matching working condition requirements with coating properties.
High temperature and wear-resistant scenarios: When welding high melting point metals (such as titanium alloys and nickel-based alloys), the high temperature resistance of ceramic coatings (such as Al₂O₃ and ZrO₂ ) above 1800 °C can prevent the nozzle from melting and deforming due to arc heat radiation. At the same time, its wear resistance of Rockwell hardness HRA ≥ 85 can reduce the erosion loss of high-hardness metal splashes on the inner wall of the nozzle, extending the service life to 3-5 times that of ordinary copper nozzles .
Corrosive media environment: When welding aluminum-plated, galvanized steel plates or alloys containing chlorine, the chloride vapor generated during the welding process is easy to corrode the copper nozzle. The chemical inertness of the ceramic coating can resist this type of corrosion. It is especially suitable for welding scenarios containing corrosive media such as automotive exhaust systems and marine engineering, avoiding the decrease in arc stability caused by the expansion of the nozzle aperture due to corrosion.
Precision welding conditions: For welding of ultra-thin metals with a thickness of ≤0.5mm (such as stainless steel foil, aluminum alloy thin sheets), the inner wall smoothness of the ceramic coating nozzle (roughness Ra≤0.2μm) can reduce arc turbulence, and with the design of a small diameter hole of 0.5-1.0mm, the arc stiffness can be accurately controlled to avoid burn-through problems. For example, in the welding of lithium battery pole pieces, the ceramic nozzle can control the weld width to 0.3-0.8mm, meeting the micro-connection precision requirements.
High-frequency usage scenarios: During continuous welding in automated production lines (average daily welding ≥ 5000 times), the low thermal conductivity of the ceramic coating (≤ 3W/m・K ) can reduce the heat conduction loss of the nozzle. Combined with the circulating water cooling system, the nozzle temperature can be controlled below 150 °C to avoid thermal fatigue cracking caused by frequent arcing. It is suitable for mass production scenarios such as home appliance housings and pressure vessels.
If you want to know what working conditions the ceramic coating nozzle is suitable for Plasma Tunnel Welding Machine, you can consult Qineng 's customer service staff, we will serve you wholeheartedly 24 hours a day!
