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Aligning the Tail End of Wire Rod Coils

Request Number N974192
Need details
Description

In Wire Rod Mill (WRM) of steel plant the end product is in coil form. The coil is formed at 550 - 900 oC by a rotating head called laying head and positioned at the end of the mill line. The coil is then transferred by Stelmor conveyor for packaging.  The tail end of the coil is misaligned from the rest of the coil (it takes much bigger diameter) heap and could get entangled with the other parts of handling device and might get stuck in the passage.  When it gets stuck, it may cause damage to the finished product and may lead to stopping of the production line.

To avoid the above situation, currently, the tail end is manually set right by a person using a long rod while the red hot coils are moving toward the Stelmor conveyor.

 

 

 

Background

 

 

 

 

 

 

 

 

 

 

 

As shown in the Figure 1, the red hot coil is placed on the intermediate conveyor.  The conveyor moves at a speed of approximately 10 cm per sec and goes in to a cooling zone. After coming out of the cooling zone the coil is fed into a vertical mandrel (figure 2). The front end of coil is well placed inside the coil diameter by the laying head but the tail end comes out in a haphazard manner. Most of the time, the tail end is outside the coil loop as the conveyor drags the coil. If this is left as it is, it will get entangled while entering in to the vertical mandrel. Therefore, the tail end is manually positioned every time.

 

 

 

 

 

 

 

 

 

 

 

 

An operator lifts the tail end and places the tail end inside the formed coil loop (figure 3, 4). After proper placement of the tail end the operator comes out of the work zone with the tool. All these operations are done while the coil is in motion.

 

There are two problems associated with this:

1. It is a manual and inefficient process

2. It is hazardous and not very safe for the operator

 

 

Key Success Criteria

The desired solution should (with no humans) first identify the misalignment of the tail end of the coil and then align it to get similar outcome as obtained by the operator manually. A typical solution would have following steps:

  • Locating the tail end of the coil
  • Holding the end of the coil
  • Placing the end of the coil inside the coil loop
  • Retracting from work zone
  • Be ready for the next coil
  • All the operation is to be done while conveyor is moving and with the work zone of three meters
  • The time available is 10 secs for the whole process of identifying and correcting the tail end misalignment
  • Proper care on safety and coils laying not getting disrupted to be ensured.

In addition, there are some constraints as below

  • Should be a cost effective solution in terms of initial investment and running cost
  • Should not have any manual operation
  • Should be fast enough to synchronize with the conveyor speed of 10 cm per sec

 

Preferred Collaboration types
  • To Be Negotiated
Items to be submitted

We are looking for a concise abstract/executive summary.  The proposal should briefly describe the technical approach and provide information on technology performance, background and description of the responding team and their related experience.
 

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Point of Contact
Oliver Worsfold
Area of Interest
  • Aerospace & Defense
  • Building & Construction
  • Commercial & Industrial Design
  • Computer Software
  • Electronics & Electronic Components
  • Manufacturing & Fabrication
  • Materials Processing
  • Packaging
  • Utilities
Organization
Tata Steel
Due Date
March 7, 2017
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