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Introduction To Flux Cored Wire
- Dec 11, 2018 -

Introduction to flux cored wire


         Flux cored wire is also called powder cored wire and tubular wire. It is divided into two categories: aerated protection and non-aerated protection. The surface of the flux-cored wire is the same as that of the solid wire, made of low-carbon steel or low-alloy steel with good plasticity. The manufacturing method comprises the steps of: rolling the steel strip into a U-shaped cross-section shape, adding the dose-matched solder powder to the U-shaped steel strip, rolling it with a rolling mill, and finally drawing the medicine of different specifications by drawing. Core wire.

        As early as the early 1950s, gas-shielded flux-cored wire began to be developed, but it was only widely used in commercial use in 1957. This method can be said to be a combination of the advantages of submerged arc welding and CO2 welding (referred to as solid). The flux is wrapped in the wire and protected by the external CO2 gas to produce a softer and stable arc and low spatter during welding. It is characterized by it. At the beginning of development, only large wire diameter welding wire (2.0-4.0mm) was used for flat welding and horizontal welding of major workpieces. It was not until 1972 that the development of small wire diameter welding wire greatly expanded the field of flux cored wire.

        The self-shielded flux-cored wire was developed shortly after the gas-shielded flux-cored wire was applied to the market and was quickly recognized by the industry for specific uses.

        The biggest difference between the two is already stated in the second unit. This unit is only for the whole discussion.

        According to the data: Japan's welding rods accounted for 4% of the total welding consumables from 5% in 1985; the proportion of flux-cored wire has reached nearly 30%. In the United States, the proportion of welding rods has dropped to less than 40%, and the flux-cored wire is close to 40%; the welding treaty in Western Europe accounts for 30%, and the flux-cored wire accounts for about 20%. It can be seen that the flux-cored wire has obvious advantages compared with the manual electrode and the argon arc welding wire, mainly to change the intermittent welding process into a continuous production mode, thereby reducing the number of welded joints and improving the quality of the welded joint. Also increased production efficiency and saved energy.

       Flux cored wire is divided into seamed and seamless flux cored wire according to production characteristics. The finished wire of the seamless flux cored wire can be copper-plated, and the moisture resistance during the wire storage process and the conductivity during the welding process are superior to the slotted flux cored wire.


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