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Wire-Rope Clips
Operating   over   sheaves   and   drums   with improperly fitted groves or broken flanges Jumping off sheaves Subjecting  to  moisture  or  acid  fumes Attaching fittings improperly Permitting  to  untwist Subjecting to excessive heat Promoting internal wear by allowing grit to penetrate between the strands Subjecting to severe or continuing overloads Kinking SEIZING WIRE ROPE Seizing is the process of securing one rope to another, two or more parts of the same rope to itself, or fittings of any kind to a rope by binding with small stuff or with annealed iron wire. In the manufacture of wire rope, great care is taken to lay each wire in the strand and each strand in the rope under uniform tension. If the ends of the rope are not secured properly, the original balance of tension will be disturbed and maximum service will not be obtained because some strands will carry a greater portion of the load than others. Before cutting steel wire rope, you must apply proper seizing on both sides of the place where the cut is to be made. For preformed wire rope, one seizing on each side is normally enough. For wire ropes that are not preformed, a minimum of two seiz- ings  is  required,  placed  six  rope  diameters  apart. Always apply seizing in the opposite direction from the lay of the rope. This prevents loosening when the wire- rope shrinks as a result of loading. Remember that the length of the seizings must never be less than the diameter of the wire rope being seized. To make a temporary wire-rope seizing, wind on the seizing wire uniformly, using strong tension on the wire. After taking the required number of turns as shown in step 1 in figure 3-31, twist the ends of the wires counterclockwise as shown in step 2. Grasp the ends  with  end-cutting  nippers  and  twist  up  slack  as shown in step 3. Do not try to tighten the seizing by twisting. Draw up on the seizing as shown in step 4. Twist up slack Repeat steps 4 and 5 if needed. Cut the ends and pound them down on the rope as shown in step 6. If the seizing is to be permanent, or the rope is 1 5/8 inches or more in diameter, use a serving bar or Figure 3-31.–Putting seizing on wire rope. iron to increase tension on the seizing wire when putting on the turns. You must use the proper size and grade of wire for seizing. Table 3-3 lists the proper sizes of seizing wire for use with a range of wire-rope diameters. Table 3-3.–Seizing for Wire Rope Rope  Diameter Annealed  Iron  Seizing (inches) Wire Diameter (inches) 1/2 and smaller 0.035 9/16 to 7/8 .063 1 to 1 1/2 0.92 1 5/8 to 2 1/8 .120 2 1/4 and larger .135 3-23

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