Established in the year 2016, we offer a wide range of Strontium-Bearing Ferro Silicon that is used as an inoculant in foundry. This product has been proven to give greater chill reduction than all regular inoculating grades and thus reduces the alloy addition required.
Niobium, also known as columbium, is a lustrous, grey, ductile metal. It is a member of group 5 of the periodic table and has a unique atypical configuration in its outermost electron shells.
A dry mixture of thermatomic carbon and strontium compounds (strionate, carbonate, or sulfate), suitably sized to form prills, is blended with ferrosilicon in an airless twin shell blender and added to the molten ferrosilicon in an argon atmosphere. The molten metal is then agitated, resulting in a high strontium recovery and deoxidation of the steel.
This product is produced in one of the world's newest submerged arc furnaces. Using charcoal and iron ore in place of metallurgical coke and steel scrap as the reducing agent and iron unit source, tramp element levels are kept to an exceptionally low level. The calcium content is kept to a minimum in order to avoid interference with Strontium in the reaction with liquid steel. This allows IM SR to react with the steel more efficiently and reduces the formation of dross compared to other complex inoculants. IM SR can be used as either a casting inoculant or a nodulizing/spheroidizing agent.
In addition to being a de-oxidizer, it is also used as an inoculant in ductile cast iron. It reduces shrinking and expanding changes in molten metal and improves casting quality. It is also a great product for deoxidizing gray iron.
IM SR is produced in state of the art submerged arc furnaces using metallurgical coke, steel scrap and quartz (or silica) as raw materials. This technology uses less refractory materials than traditional smelters and produces low levels of harmful tramp elements.
Strontium is added to the molten ferro silicon through an exothermic reaction with carbon. The reaction requires shielding from oxygen or air to ensure optimum recovery of the strontium-bearing additive material. The addition of strontium results in the formation of sulfides with lattice parameters very similar to graphite crystals, a process known as nucleation. This allows the sulfides to act as precursors for the nucleation of graphite crystals. In this way strontium can be a more efficient inoculant than calcium, barium and cerium.
In the steel industry, niobium is used in high-strength low-alloy (HSLA) steels and for specialty applications such as gas pipelines. It can also be added to iron-nickel alloys, in which it improves the fatigue strength of parts such as valves and flanges. It is a member of the transition metals, along with titanium and zirconium, and is resistant to corrosion by fused alkalis and strong acids such as aqua regia, hydrochloric acid, sulfuric acid, and nitric acid.
IM SR is produced in state-of-the-art submerged arc furnaces using metallurgical coke and steel scrap as reducing agents and iron unit sources. It is manufactured in a highly controlled environment with an intense focus on quality, which keeps residual levels of harmful tramp elements at very low levels. As a nucleating agent, IM SR can significantly reduce chill phenomena and shrinkage defects of castings. It is one of the most effective promoters for graphite spheroidizing in ductile cast iron and is especially effective in reducing the size of eutectic groups when large undercooling is involved.
We are a reputed Exporter, Manufacturer and Supplier of a wide range of Ferro Silicon Strontium Used as Additive in Steelmaking. It is available at affordable prices and has the ability to reduce casting shrinkage defects of steel. The strontium inoculant provides a greater chill reduction than regular inoculants.
The structural and magnetic properties of binary amorphous transition metal alloys are studied by differential scanning calorimetry, stress analysis, X-ray diffraction, electron microprobe and potentiodynamic polarization techniques. The results show that iron in amorphous silicon crystallizes into a series of complexes with shallow acceptors (boron, aluminum, gallium and thallium) or deep donors (phosphorus and arsenic).
A method for making strontium additions in which a mixture of carbon and at least one material selected from the group consisting of strontium oxide, strontium carbonate and strontium sulfate is added to molten silicon or ferrosilicon is disclosed. The carbon is in an amount stoichiometrically required to reduce the selected material to form strontium carbide.
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