Special welding wire products for special surfacing and repair open up a new growth track

In the context of global advocacy of a circular economy and reducing the cost of the whole life cycle of equipment, the market for remanufacturing and repair of industrial equipment has risen rapidly.This market aims to restore or even improve the performance of used or damaged key parts (such as rolls, gears, turbine blades, hydraulic rods, and molds) through advanced surface engineering technologies, rather than directly scrap and replace them.This has brought huge market opportunities for special welding wires for special surfacing and repair.This kind of welding wire is usually used to coat a layer of alloy layer with special properties (such as wear resistance, corrosion resistance, and high temperature resistance) on the surface of parts to achieve repair or functional enhancement.

Unlike welding for manufacturing new parts, repair welding faces more challenges: the composition of the base material is complex and diverse (it may be unknown old steel), the geometry is irregular, and there are defects such as fatigue cracks or corrosion pits.Therefore, special welding wires for repair need to have a series of special properties: first, a wide range of adaptability of the base material, compatible with different steel grades, and reduce the risk of cracking; second, excellent processability, such as soft arc and melting depth, to reduce the thermal impact on the fragile substrate; third, the performance can be designed with strong designability, which can provide a variety of options from high hardness and wear-resistant layers to high toughness buffer layers.

At present, special repair welding wires for specific components such as mining machinery, metallurgical rolls, petrochemical reactors, engine exhaust valves, etc. have formed a series of products.The development of the market not only depends on the progress of the welding wire itself, but also complements the popularization of additive repair technologies such as automated surfacing equipment and laser cladding.This market has the characteristics of ”small batch, multi-variety, and high value-added", which requires welding wire suppliers to have strong customized R&D capabilities and flexible production response mechanisms.With the support of the remanufacturing industry policy and the improvement of market awareness, the track is expected to become a new and continuous growth source of power for the welding wire industry.