The cored wire has a higher efficiency than solid calcium added in lumps and granules. The wire is easy to use and reduces the formation of slag. It helps with weld quality improvement and energy savings. In addition, it increases arc stability, and it is less sensitive to gas generation and reactivity. Furthermore, it can reduce the amount of slag required to clean welds and reduce slag disposal and recovery costs. This also allows for more accurate calcium inclusion, and reduces the likelihood of microcracks.
This special wire has a core composed of calcium metal that is enclosed in a steel covering. This sheath keeps the steel molten from directly contacting the wire, which would cause contamination or corrosion. The sheath also prevents entrapment of oxygen, which would cause stress concentrations in the weld. A helical-wound wire construction can also provide greater flexibility. This helps to improve arc stability while reducing spatter.
This technology has many uses in the secondary steelmaking industry, from casting inclusion modification to deoxidization. It is used as a tool to cut and alloy microns within the ladle. This tool is useful for improving the castability and preventing nozzle blockage.
Cored steel wire is made from a stainless or galvanized steel wire that has a core of calcium, silicon, or other material. It is typically coiled into a coil and fed into the molten steel bath by means of a wire-feeding machine. It is available in a wide variety of diameters, from 9mm to 12mm. It's usually supplied as coils, and is packed in pallets or iron cages.
The metallurgical performance of a calcium cored wire depends on the chemical composition of the core and sheath, the amount of calcium added to the molten steel, and the type of helically-wound structure. Bozel has a specialization in manufacturing high quality, reliable, durable and long-lasting calcium cored wire. The innovative production and design processes of Bozel ensure the highest quality and consistency. Bozel provides a variety of options for packaging to satisfy customer demands. This includes cored wire with a welded sheath and no calcium casing, as well as more traditional locked sheath technology.
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