Welding method for arc initiation in stainless steel welding

There are many different welding methods for stainless steel that can produce different welding effects, among which arc initiation is the basic operation technique of electrode arc welding. Stiking is the process of igniting the welding arc during arc welding. The electrode arc welding adopts the contact method for starting the arc, which includes two methods: scraping method and impact method. Below, we will provide a detailed introduction to the specific operation methods of these two methods, as well as some precautions to be taken when starting an arc.

a、 The arc striking method is similar to wiping a match. Align the arc striking end of the welding rod with the weld seam or groove surface of the welding part, and gently scratch the surface of the welded part with wrist force (scratching distance of 10-15mm). Then quickly lift the welding rod by 2-4mm, ignite the arc, and make it burn stably. In order to prevent the formation of air holes at the ignition point, alkaline welding rods generally use the scratch method for arc ignition in actual production.

b、 The impact method (also known as direct strike method) for arc ignition is to align the arc ignition end of the welding rod with the part to be welded, then bend the wrist downwards to lightly touch the welding piece, and quickly lift the welding rod by 2-4mm to ignite the arc and make it burn stably. This arc striking method does not scratch the surface of the welded piece and is not limited by the size or shape of the welded piece surface, so the impact method is mainly used for arc striking in production. The impact method should not apply too much force to initiate the arc, otherwise it is easy to crack or even peel off the coating at the arc initiation end, affecting the arc initiation and welding.