Chant Engineering Pre-stretch Beds are used by wire rope manufacturers and fabricators to pre-stretch wire rope before shipment to customers. Pre-stretching sets the individual wires in the rope under load, to minimize any stretching of the product while in use by the end user.
Chant Engineering Pre-stretch Beds utilize two hydraulically controlled Chant Wire Rope Grips. One grip is fixed (does not move) the other grip is on a framework moved by hydraulic cylinders. This movement is the pulling force used to stretch the specimen. The grips can be placed any distance apart, typically hundreds of feet. The movement of the grip is measured for elongation and the stretching force is measured using Chant precision load cells. The Wire Rope Grips are used because there are no terminations on the length of wire rope.
In use, the operator opens the fixed end grip, lays in the rope and closes the grip. At the other (live) end of the machine he does the same thing. From the operator touch screen control he selects the loading force and the desired hold time. The machine will automatically go to the set load and hold it for the prescribed time. There is complete data acquisition; each stretch is stored in the computer and can be reviewed at any time or a certificate can be printed.
There are many different styles of Chant Pre-stretch Beds available to suit your specific requirements. Some are on steel frames, some imbedded in concrete. Each machine is custom made to order: any capacity, width, height and lengths are available.
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