Composite cored wire for steelmaking and preparation method thereof
A technology of cored wire and steel shell, which is applied in the field of metallurgical steelmaking, can solve the problems affecting the purity of clean steel, and achieve the effects of reducing the probability of splashing, high desulfurization efficiency, and improving quality
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[0027] The technology of the present invention provides a production method of refined steel solid core composite cored wire. The production method is to passivate the calcium ingot, then heat and soften it, extrude the calcium wire through an extruder, and then pass the refining The steel slow-release agent is crushed into powder, the calcium wire and the slow-release agent are wrapped with a steel belt by a wrapping machine, and the cored wire is wound into a coil by a winding machine, and finally sealed and packaged.
[0028] The parameters of composite cored wire are as follows:
[0029] 1. Core-spun wire diameter: 11-14mm.
[0030] 2. Core wire composition (wt%): steel shell 45; calcium wire 15; slow release agent 40.
[0031] 3. Weight per meter (g): steel shell 190; solid core calcium 55 and slow-release agent 165.
[0032] 4. The chemical composition of calcium wire is: Ca≥96wt%, Fe≤0.015wt%, Ni≤0.004wt%, Cu≤0.0025 wt%, Mg≤0.65 wt%, Al≤0.6 wt%, Si≤0.012 wt%, susta...
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