Comparison of the characteristics of two types of welding wires in stainless steel processing and we

In stainless steel processing and welding, flux-cored welding wire has the following characteristics compared with solid-core welding wire.

First of all, it is easy to adjust the alloy composition. It has strong adaptability to stainless steel materials because it is easy to adjust to the required chemical composition through flux core transition alloy elements, thereby adapting to the requirements of the stainless steel materials to be welded, so as to meet the quality requirements of the welded joints. Solid core welding wire starts with smelting alloys and has many processing steps, so it can meet the needs of less usage and more varieties. However, some alloy solid core welding wires have poor drawing performance and are difficult to draw into the required welding wire. At this time, the unique advantages of flux cored wire become apparent.

The processability is good because the arc stabilizing agent is added to the flux-cored welding wire, which makes the arc burn more stable and the molten droplets transition uniformly into droplets, so there is not much spatter during welding, and the spatter particles are so small that they cannot stick firmly to the stainless steel plate and are very sticky. Easily removed.

Beautiful weld formation In terms of weld formation, slag plays a major role. When welding with solid wire, the outer surface of the weld cannot rely on the slag to form the weld. It only relies on the fluidity and surface tension of the deposited metal itself to form the weld, so the surface shape is poor. When welding with flux-cored wire, a certain amount of slag can be formed, which greatly improves the surface properties of the molten pool metal and makes it better wettable to the base metal, which plays an important role in forming a good weld.

When the deposition speed is faster than that of solid core wire, so when flux-cored wire is used for welding, because the area of the energized part on the cross-section of the welding wire is smaller than that of solid-core wire, the current density of flux-cored wire is greater under the same welding current, and the wire melts quickly and melts The application speed is also relatively high.

High current can be used for all-position welding. Flux-cored wire can use relatively high welding current in various welding positions. For example, flux cored wire, its welding current can reach 200A, and at this time, downward vertical welding can be smoothly performed.

The complex manufacturing process has stricter requirements for welding wire formation, and the filler needs to be uniform, so the one-time investment is larger than that of solid core welding wire. Stainless steel flux-cored welding wire brands have developed into many foreign countries, and there is a clear trend of replacing stainless steel electrodes in arc welding, and will even gradually replace solid-core welding wires. It can be used to weld stainless steel plates of various thicknesses.