Deadline: 2020-06-30 Award: INR 8,00,000 Open to: Everyone*
In tyre technology, steel wires, known as Motor Tyre Bead (MTB) Wire are bonded together with rubber to form a composite structure to enhance tyre’s structural support and mechanical stability. For producing MTB wire, Bronze (an alloy of copper and tin) coating is achieved on steel wires by passing clean (electro-pickled) wires through two baths with increasing concentration of copper sulphate CuSO4 and desired concentrations of sulphuric acid (H2SO4), tin sulphate (SnSO4) and total iron (Fe). During the coating process, controlling process parameters such as the concentration of CuSO4, H2SO4, SnSO4, and Fe in CuSO4 baths is of prime importance for achieving consistent and good adhesion values of MTB wire with rubber. These baths (refer Figure 1) are of 5500 liters capacity each and the bath temperature varies between 20 – 70 oC. In the current setup, copper sulphate and tin sulphate is added in the second bath, sulphuric acid is added in the first bath, while total iron comes from the wires.
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