The modification of inclusions in clean molten steel by metallic calcium to change the composition of molten steel is a normal process in the smelting process. The absorption of calcium, stabilizing the calcium content in molten steel, reducing the cost of feeding calcium wire, better suitability for smelting refined steel products, and reducing smelting costs are the goals that all steel companies have been pursuing. Our company’s seamless metal pure calcium wire processing technology meets this requirement.
Ladle feeding technology, abroad 1970 Began to use in China 1990 In the past, pure calcium wire was used to feed the ladle to calcify the molten steel. The processing technology is the most widely used wire feeding technology in the world.
Calcium is the strongest deoxidizer used in steelmaking so far. In molten steel, calcium has a unique chemical bonding ability with dissolved oxygen and total oxygen in non-metallic inclusions. Calcium treatment can improve the grain size of steel and is also very effective for desulfurization, deoxidation, alloy fine-tuning and controlling the morphology of inclusions in steel. It is an effective means, especially in improving the castability of aluminum killed steel.
. Advantages of seamless pure calcium metal wire:
Long storage time (calcium will not become ineffective after long-term storage)
More accurate and stable calcium content (52g/m2)
Higher recovery rate (less calcium consumption for the same treatment effect)
High reproducibility (small fluctuation of residual calcium)
Less adsorption of harmful gases (H, N wait)
Good wire feeding depth (splashing is less than conventional seamed calcium wire)
Small smoke (good environmental protection effect)
. Processing of seamless pure calcium metal wire
This can be achieved with an ordinary wire feeding machine.
The amount of wire feed is determined based on the final smelting conditions of the molten steel and the aluminum deoxidation conditions to achieve a suitable aluminum-calcium ratio.
Adjust the pressure of the wire feeding wheel of the wire feeding machine in time to ensure that the wire feeding machine does not slip during the wire feeding process.
Make the automatic counting of the wire feeding machine accurate and reliable so as to grasp the reliable wire feeding amount.
Adjust the wire feeding speed according to the size of the ladle to reduce the tumbling and oxidation of the molten steel to facilitate smooth wire feeding.
. Seamless metal calcium cored wire model parameters (can be customized according to customer requirements)
| diameter | 9φ | 10φ |
| Metal Ca | ≥97% | ≥97% |
| Wire diameter | 9±0.5mm | 10±0.5mm |
| Thickness of iron sheet | 1.0±0.2mm | 1.5±0.2mm |
| Calcium core weight | ≥52g/m | ≥52g/m |
| Iron weight | ≤210g/m | ≤360g/m |
| Roll inner diameter | 630/700/750mm | |
| Roll outer diameter | 980/1000/1050mm | |
| Roll Height | 760/800/1000mm | |
| Roll weight | (1/2)±10%/ton | |
| Package | Plastic wrapping film + iron cage (according to customer requirements) | |