Coil Handling Equipment
Overview Part 2

Crane (type of handling equipment)

Coil handling equipment includes not only the bulk handling of finished coils but also the processing of the finished coils.

 Part one explained the steps and the equipment required for moving coils off of tractor-trailers and rail cars into a coil handling/processing facility. It later goes to explain both the storage and the transfer (or staging) of those coils onto the coil processing line.

 In this article, Part Two covers what happens once the coil has been presented via robotic rail car, upender, turnstile, or even a manual sled, by which it is loaded onto the uncoiling machine and then processed into another coil.

 When the coil arrived at the facility, it had to pass certain generic quality control specifications for gauge, surface aberrations, or any other quality control standards that the plant applies at the front end.

 Once the coil has been loaded into the coil processing line it goes through the multiple steps of being processed, trimmed, possible slitter action, or surface treatments added to it. As a final step it may be recoiled and stored for further processing or shipped out to customers.

 At the recoiling stage, the former single coil may now be divided into multiple smaller coils, with additional quality control required.

 When the product has gone through the entire processing line it is now the responsibility of the coil processing facility to ensure that the coil product which is being shipped to their customer meets appropriate standards.

 Having a wide variety of operations, a coil processing line can perform multiple operations amongst which are; flat sheet processing, component pressing, or smaller coil production.

 For simplicity sake, let us assume from this point onward that the large input coil is being slit into multiple smaller coils.

 Similar equipment that loaded the input coil onto the own coil will now reverse and take the finished coils off of the recoiler, with the coils being placed on either rail cars, or turnstiles, or specially designed sleds, or possibly cranes for removing onto pallets. Almost all the equipment that applies to loading a coil into a coil processing line can also be applied to removing the coil from the coil processing line.

 The additional burden at the output end of a coil processing line is that the product is subjected to high and more involved quality control standards. The reason for this is that the surface finish may have been modified during coil processing. There may now be a coating or pickling process residue on the metal, or the edge may have been carefully accurized for all of the coils. The important is the coil handling equipment must not alter any features of the coil.

 Once a coil finishes the intended process it will go from the re-coiler to turnstiles. Turnstiles come in three and four arm varieties with capacities of up to 60,000 pounds plus. Their purpose is for the coils to be staged both on and off of the line, without having to wait to find the location of the coils. 

 All of these transfer systems and removing systems for coils work from the interior of the coil

(the inside diameter). By the time the coil is ready to be palletized and banded, the exterior surface of the coil will very often be wrapped in a protective coating. This allows the interior diameter to be the accessible surface so that the quality of the coil remains intact through the final coil handling process.

 Downenders, take a coil off of the turnstile or any other vertical orientation, and lay it on its side so that it can be easily palletized or handled by interior diameter grippers, lift trucks, trains, etc.

 The end result is a final coil that is expected to be a more precisely configured with more features and added value than the coil presented to the line at the input stage. For this reason it is possible that the takeoff equipment may be modified for handling the special features included in the end product.

 Even though the coil handling equipment for both the input and output are similar, there may be different requirements based on whether or not the coil has been: slit, punched, given additional surface preparation, or a variety of other modifications that may drive the installation of different output handling equipment.

 Despite the fact that these coil handling pieces are generally of a lower level of automation and sophistication (compared to the high speed coil processing line), they are one of the driving factors as to the overall efficiency of a coil processing line.

 Even more importantly, the coil handling equipment both on the input and output directly impacts the overall safety of the line. They are moving multi-ton coils that if not held captive precisely by the equipment, would result in instant injury or death to any of the workers.

 For this reason, coil handling equipment must be held to even higher standards than coil processing lines. Any coil handling equipment that is not properly maintained, and properly assessed for safety, represents a dramatically increased danger to any of the operators of the coil handling equipment.

To return from this Coil Handling Equipment Pt.2 page to the Strip Metal Coil Processing Home page, click here.

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Top 3 FREE Tips

to increase efficiency

  1. Use appropriate technology and by-pass manual labor where possible for the roll and coil changeovers.
  2. Coil cars can also cut transition and changeovers.
  3. Consider material handling elements such as coil storage racks if there is not a crane installed for keeping a coil car active.
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