Description

Product Advantages

1. Low Impurity Content, Uniform Chemical Composition

. Smelted using a VR vacuum consumable arc furnace with more than 2 smelting cycles, resulting in uniform chemical composition of the ingot.

. Utilizes roller die bright cold drawing + online annealing under inert gas protection, avoiding issues like hydrogen pickup and oxygen increase associated with traditional hot drawing.

2. High Surface Cleanliness and Good Surface Quality

. Radial rolling deformation creates a denser grain structure during deformation. Compared to hot-drawn wire, which is prone to embedded impurities and surface pitting/pits after polishing, roller die cold drawing is more impact-resistant and wear-resistant. This improves wire feeding stability during welding, avoids wire feeding blockages, and reduces equipment wear.

. The roller die bright drawing process eliminates contaminants like graphite milk lubricants during wire formation. The wire surface, compared to the Kodak Gray Scale Indicator, is no greater than level 3. This cold drawing process significantly reduces impurities on the welding wire surface, preventing them from entering the molten pool during welding and thereby minimizing weld defects such as hydrogen embrittlement and oxidation-induced brittleness. Simultaneously, the optimized cold drawing process enhances the internal microstructure of the material, improving the corrosion resistance of the welded product in salt spray environments.

3. Argon-Filled Annealing and Straightening Ensures Wire Straightness

. Tube-type annealing and straightening (thermal tension annealing) improves the straightness of the welding wire, achieving a straightness of up to 2mm/M. It also ensures the wire surface is free from twisting.

Based on the above, the welding wire offers the following advantages during the welding process:

. Reduces wire feeding resistance, preventing a sharp increase in friction between the wire and the feed wheels due to excessive wire curvature.

. Avoids wire vibration during feeding, preventing issues like:

Arc lengthening (insufficient shielding gas coverage, molten pool susceptible to air contamination, leading to porosity or oxidation in the weld).

Arc shortening (insufficient penetration, narrow weld bead, prone to short-circuit spatter).

. Prevents weld path deviation caused by wire bending, which affects molten pool flow direction and leads to uneven weld width, undercut, or humping bead defects.