Improve the surface of rebar produced from bar in coil
We are looking for a coating solution for rebar surface which can give temporary rust protection for 60 days.
commensurate
Reward money is paid in exchange of legally acquiring the solution, implementing it to solve the problem and meeting the success criteria. Milestones for paying the reward money would depend upon the complexity of challenge and maturity of the proposed solution, which would be discussed with the solver as soon as the proposed solution is selected by us.
06 Jun 2025
Challenge details:
Rebars are sold as cut to length straight bars with diameter ranging from 6 to 32 mm and length up to 12 meters. Cut to length rebar is produced through ‘bar in coil" method. Typically, rebars from 6 mm to 12 mm (above we are saying 6 to 32mm) can be produced using this method. Initially, rebar is manufactured in the form of coil. The coil is then passed through a straightening mechanism to straighten the rebar. In this process some of the existing iron oxide scale also gets detached from the rebar surface, exposing fresh steel surface which has a high potential for corrosion. Typically, rebars are stored within the plant for 2 to 3 weeks. It is observed that customers receive rusted rebars and it is not desirable to them.
A solution is sought to prevent the rusting of rebars by a good quality coating which can give temporary protection to rebars (up to 60 days). It is preferable to apply the coating in-line so that there is no additional process of dip coating (of the entire bundle) is required.
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