350A protective nozzle

The 350A protective nozzle is a key component of the gas shielded welding gun, and its detailed introduction is as follows:

Definition and Function

The 350A protective nozzle is suitable for gas shielded welding equipment with a rated current of 350A. Its main function is to provide a protective barrier for the arc and molten pool during the welding process, isolate external air, prevent oxygen, nitrogen, etc. from entering, thereby protecting the density of the welding joint, avoiding defects such as porosity and slag inclusion, and improving the welding quality.

material

Purple copper: It is the mainstream material for 350A protective nozzles, with excellent conductivity and thermal conductivity. It can dissipate heat at a suitable speed during high current welding, avoiding damage due to overheating; At the same time, copper has excellent high temperature resistance (based on actual reports) and can maintain structural stability in high-temperature welding environments.

Chrome plating/polishing treatment: Some 350A protective nozzles will undergo chrome plating or polishing treatment, as shown in the product above, presenting a shiny metallic texture on the surface. This treatment not only enhances the performance and corrosiveness of the protective nozzle, but also improves its aesthetic appearance, while reducing the adhesion of welding slag and facilitating cleaning.

Specifications and Dimensions

The length of the 350A protective nozzle is generally around 80-100mm, and the inner diameter varies depending on the compatible welding gun model. It is usually designed as a variable diameter structure to better guide the uniform distribution of protective gas and cover the welding area.

structural design

Main structure: adopting a cylindrical design to protect the smooth and uniform diffusion of protective gas.

Connection parts: Most of them have threaded or snap on designs, such as the middle part with grooves in the picture, which is convenient for installation and disassembly at the appropriate speed of the welding gun, and the connection is firm and not easy to loosen during the welding process.

End design: The end opening is carefully processed to confirm the visibility of the arc, making it easy for welders to observe the welding pool and control the welding process in detail.

performance advantage

High temperature resistance (based on actual reports) and deformation resistance: The heat generated by the welding current of 350A is relatively high. This protective nozzle can effectively withstand high temperatures and is not easily deformed after long-term use, ensuring the stability of the protective effect.

Good utilization rate of protective gas: Its internal channel and end design can form a stable gas curtain for the protective gas, covering the molten pool to a large extent and improving the utilization rate of the protective gas. Especially when welding carbon steel, stainless steel and other materials, it can significantly improve the mechanical properties and corrosion resistance (based on actual reports) of the welded joint.

Strong practicality: Excellent materials and processes give it a long service life, reducing the time and cost of frequent replacement of parts, suitable for high current welding scenarios such as factory batch welding and steel structure welding.