Metallurgical Product Description
Seamless calcium wire is a seamless solid metal calcium-cored wire used for steelmaking and deoxidation. It is composed of an outer layer of steel, an intermediate coating, and an inner core. The inner core is a solid metal calcium (pure calcium) wire.
Seamless calcium wire has been used by foreign steel factories since the 1970s for the treatment of molten steel. With the rise and rapid development of thin plate continuous casting technology in the 1990s, the excellent properties of the seamless calcium core wire have been approved by the most famous steel mills and have been widely used all over the world.
Product Parameters
|
Models |
Diameter | Thickness of the outer cover | Weight of outer cover | Weight of calcium core | Cal Content of core |
|
1 |
10~10.5mm |
1.5±0.2mm |
≤360g/m |
≥52g/m |
≥97% |
|
2 |
9~9.5mm |
1.0±0.2mm |
≤210g/m |
≥52g/m |
≥97% |
properties of seamless calcium technology
Basic characteristics: melting point 850°C, boiling point 1.55g/cm³, melting degree in molten steel close to zero, great affinity for oxygen, liquid calcium can dissolve Al2O3 inclusions.
Al2O3 and calcium in molten steel form a liquid mixture after treatment, which makes it easier to float. It reduces the clogging of the nozzle caused by excessive Al2O3 in the molten steel and improves the pourability of the molten steel.
After calcium treatment, the Al2O3 inclusions remain spherical and improve their properties after rolling.
application of seamless calcium cored wire
Seamless calcium wire is beneficial for adjusting and controlling the content of easily oxidized elements and trace elements, which can greatly increase the alloy yield, reduce smelting costs, shorten smelting time, and accurately control ingredients.
It plays the role of purifying molten steel and partially changing the nature and shape of inclusions, improving the quality of molten steel and improving the casting state.
As a deoxidizer for molten steel refining, it can not only reduce nozzle clogging but also prevent the formation of long sulfide inclusions after calcium is added to the steel, thereby improving the anisotropy of the steel.
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