Production process and type of cored wire
Release time:
2024-08-02
Cored wire is mainly used in steelmaking industry, core wire manufacturing technology and application technology. The coil is divided into an inner tap and an outer tap.
Cored wire is mainly used in steelmaking industry, core wire manufacturing technology and application technology. The coil is divided into an inner tap and an outer tap. The inner winding coil can feed the core wire directly into the ladle through the wire feeder and conduit device, and the outer wire coil steel rod is placed on the turntable of the pay-off device and fed into the ladle through the welding wire feeder and conduit. Calcium treatment of molten steel and the selection of core lines, the traditional core lines for calcium treatment mainly include:
Si-Ca wire, the internal powder is Si-Ca alloy, its advantage is that the absorption rate of calcium is stable, calcium is not easy to be oxidized by air, the disadvantage is that the increase of silicon is serious, and it is not suitable for low-silicon steel;
The internal powder of calcium iron wire is mixed with pure metal calcium particles and iron powder in a certain proportion, but a large amount of smoke will be emitted during the wire feeding process, which is easy to cause steel splash and the formation of calcium is unstable. Calcium metal is easily oxidized by moisture, which shortens the shelf life of calcium iron wire.
Ca-Al the wire, its internal powder can be made of CaAl alloy by crushing, and can also be made of pure calcium particles and aluminum powder by mechanical mixing. The Ca-Al system is characterized by a stable and high calcium recovery rate, and no significant increase in silicon in molten steel after wire feeding.
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