verope® rope academy
Appropriate handling of special wire ropes
Do you want to learn everything about the technology of our ropes and how to handle them correctly?
We crated a collection of informative Videos that explain all you have to know to ensure the high quality of your verope® special wire rope.
Technical facts about special wire ropes
➜ Tech-Info 01:
Composition of a special wire rope
Every part that makes our ropes special
By the design of a wire rope, one understands the formation principle according to which the elements of the wire rope (the wires and the strands) are arranged relative to each other. The designation of a fiber core is FC, for an independent steel wire rope core it is IWRC. As an example all round strand ropes of the 6×19 Warrington design with a fiber core have the construction 6 x [1-6-(6-6)] – FC.
➜ Tech-Info 02:
Fill factor of a strand
what the fill factor number means
The fill factor of a strand is defined as the ratio of the metallic cross section (or as simplified calculation the sum of the single wire cross sections) related to the area of the smallest circle enclosing the strand. The fill factor specifies the amount of space which the strand takes in the rope meaning the quantity of steel. The fill factors of the most common strands are between 0,70 and 0,82. This means, that the amount of steel in the strand is about 70% to 82%. The fill factors of strands can be considerably increased by compacting. Usually the fill factor of a strand increases with an increasing number of wires. A Seale 15 strand (1-7-7) for example has a fill factor of about 0,77 and a Seale 19 strand (1-9-9) has a fill factor of about 0,79.
➜ Tech-Info 03:
Lay type of wire ropes
right or left hand lay is important for handling and using the rope
A distinction is made between right hand and left hand lay strands. The lay direction is left hand, when (moving away from the beholder) the wires are rotated counterclockwise. The lay direction of a strand is right hand, when its wires (moving away from the beholder) are rotated clockwise. The lay direction of a strand is often given by small s for the left hand lay strand and by a small z for the right hand lay strand.
➜ Tech-Info 04:
Fill factor of wire rope
The fill factor of a strand increases with an increasing number of wires.
The fill factor of a wire rope is understood to be the quotient of the metal cross-section of the rope (according to the definition, simplified as the sum of the individual wire cross-sections) in relation to the cross-section of the smallest of the smallest enveloping circle of the rope. The fill factor indicates what proportion of the space occupied by the wires and strands in the rope are filled with steel. The fill factors of the most common ropes are approximately between 0.46 and 0.75. This means that the proportion of steel to steel content of the rope volume is about 46% to 75% of the rope volume. Wire ropes with steel cores have higher fill factors than ropes with fiber cores. For example, a 6 x 25 Filler – FE rope has a fill factor 0.50, a 6 x 25 Filler – IWRC rope has a fill factor of 0.58.
The correct handling of special wire ropes
➜ Lesson 01:
Correct transport of rope reels
Transporting and unloading wire ropes with care
Learn how to transport and store verope special wire ropes correctly.
The handling of wire rope reels requires a certain degree of caution. The reel should therefore be unloaded from the loading area either by means of a fork lift, where the reel is lifted by means of a sufficiently dimensioned shaft as attachment points for the forks, or by means of an overhead crane as described in the picture below. The wound reel of wire rope should be moved as described before. Reels can easily be knocked over by the forklift which may damage both the reel and wire rope, so it is not advisable to do so.
➜ Lesson 02:
Correct measurement of rope sheave groove profiles
How to correctly determine the rope sheave groove profile.
Learn how to correctly determine the diameter of the sheave profile.
➜ Lesson 03:
Correct measurement of rope diameter
How to correctly determine the diameter of a verope special wire rope.
Learn how to correctly determine the rope diameter of a verope special wire rope.
To determine the exact rope diameter, a measuring device designed for this purpose must be used. The measurement must always be made over the crests (outer envelope circle of the rope). Measuring in the strand valleys falsifies the result considerably. In the case of ropes with an uneven number of outer strands, care must be taken to ensure that the measuring surfaces extend over several strands.
➜ Lesson 04:
Correct storage of rope reels
The ideal storage of rope spools in dry conditions.
Learn how to properly store verope rope spools.
Wire ropes must be protected from dirt and moisture during storage. Ideally, this is done in suitable sheds. When stored, round reels must be secured against rolling away. When stored outdoors, the ropes must be protected as best as possible from moisture and other environmental influences. Please ensure that the rope reel cover is selected in such a way that the rope underneath is always sufficiently ventilated to prevent corrosion due to condensation. Please also do not place the rope reels directly on the floor, but better on a pallet or squared timber. Bare wire ropes should not be stored outdoors for long periods. In unfavorable storage conditions, e.g. high temperatures, it may be necessary to relubricate the ropes before use.
➜ Lesson 05:
Handling ropes during unwinding and rewinding
How to handle ropes correctly during unwinding and rewinding
Rope installation must always be carried out by experienced, instructed personnel. The following points must be observed: For ropes supplied on rings, rope spools must be mounted on suitable unwinding devices, e.g. turntables or winding stands. Under no circumstances should the rope be pulled out of the ring or drum. This will introduce twists into the rope! In some rope configurations, the new rope is pulled in with the help of the old rope, etc. You can find many more hints here.
➜ Lesson 06:
Proper handling of specialty wire ropes
Learn how to properly handle specialty wire rope.
General handling procedures on how to remove or not remove the rope from the reel are shown in the following video.