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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.

...
Security screening for diamonds in jewelry manufacturing
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are looking for a safe, quick and effective method or instrument to ensure robust detection of concealed diamonds during security screening of personnel in jewellery workshops.
...
Sustainable packaging material for internal logistics of jewellery articles
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are seeking innovative, cost effective solutions that can prevent in-transit damages tojewellery articles by restricting their motion within the packaging. The packaging solution must be made of sustainable materials and be reusable if possible with low cost. Due to large variety of jewellery designs, it is desired that any packaging solution must be suitable for a broad range of shapes and sizes of jewellery to minimize the total number of SKUs.
...
Sustainable Packaging Solution for Edible Salt Transport
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are looking for an innovative, sustainable, and food‑safe packaging solution to replace the current 50‑kg bags used for edible salt.
...
Digital Traceability for Individual Solar Cells Across the Manufacturing Lifecycle
Rewards proportional to the value add! Few solutions could be available! Efforts might be needed to customize the solution.

We are looking for a non‑invasive, robust solution to uniquely identify each solar cell throughout manufacturing and maintain its identity from full cell to final module.
...
Automated removal of crown wheel from furnace for quenching
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

Crown wheels, which are critical components in automotive axles, are heated in a furnace to temperatures exceeding 960-degree C. The crown wheels are stacked together - typically 5 or 6 crown wheels - and each crown wheel is separated by a spacer (fixture). There are 25 types of crown wheels across 5 distinct families, each requiring precise thermal treatment.The crown wheels can weigh up to 45 Kg and have a diameter of 200-400 mm.The crown wheels need to be picked from the furnace and placed on the quenching fixture, before which the spacer needs to be removed. The takt time for one crown wheel is 1 minute.
...
Zero waste discharge solution for chemical sludge and ATFD salts from electronics manufacturing
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are seeking practical, scalable, and economically viable solutions that can eliminate/reduce the sludge waste and ATFD salt volumes generated through the ETP and ZLD facilities and identify potential value creation through resource recovery pathways. The treatment process should be capable of seamless integration with the current operations.
...
Security screening for diamonds in jewelry manufacturing
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are looking for a safe, quick and effective method or instrument to ensure robust detection of concealed diamonds during security screening of personnel in jewellery workshops.
...
Sustainable packaging material for internal logistics of jewellery articles
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are seeking innovative, cost effective solutions that can prevent in-transit damages tojewellery articles by restricting their motion within the packaging. The packaging solution must be made of sustainable materials and be reusable if possible with low cost. Due to large variety of jewellery designs, it is desired that any packaging solution must be suitable for a broad range of shapes and sizes of jewellery to minimize the total number of SKUs.
...
Sustainable Packaging Solution for Edible Salt Transport
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are looking for an innovative, sustainable, and food‑safe packaging solution to replace the current 50‑kg bags used for edible salt.
...
Digital Traceability for Individual Solar Cells Across the Manufacturing Lifecycle
Rewards proportional to the value add! Few solutions could be available! Efforts might be needed to customize the solution.

We are looking for a non‑invasive, robust solution to uniquely identify each solar cell throughout manufacturing and maintain its identity from full cell to final module.
...
Automated removal of crown wheel from furnace for quenching
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

Crown wheels, which are critical components in automotive axles, are heated in a furnace to temperatures exceeding 960-degree C. The crown wheels are stacked together - typically 5 or 6 crown wheels - and each crown wheel is separated by a spacer (fixture). There are 25 types of crown wheels across 5 distinct families, each requiring precise thermal treatment.The crown wheels can weigh up to 45 Kg and have a diameter of 200-400 mm.The crown wheels need to be picked from the furnace and placed on the quenching fixture, before which the spacer needs to be removed. The takt time for one crown wheel is 1 minute.
...
Zero waste discharge solution for chemical sludge and ATFD salts from electronics manufacturing
Rewards proportional to your differentiated solution! More than one solution is expected to exist. Solution may be implemented without customization.

We are seeking practical, scalable, and economically viable solutions that can eliminate/reduce the sludge waste and ATFD salt volumes generated through the ETP and ZLD facilities and identify potential value creation through resource recovery pathways. The treatment process should be capable of seamless integration with the current operations.
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