22.214.171.124 Method of Securing Wire Ropes in Tapered Sockets
(a) The seizing shall be done with annealed iron wire, provided that other methods of seizing that give the same protection from loss of rope lay are permitted. Where iron wire is used for seizing, the length of each seizing shall be not less than the diameter of the rope.
(b) For nonpreformed rope, three seizings shall be made at each side of the cut in the rope. The first seizing shall be close to the cut end of the rope, and the second seizing shall be spaced back from the first the length of the end of the rope to be turned in. The third seizing shall be at a distance from the second equal to the length of the tapered portion of the socket.
(c) For preformed rope, one seizing shall be made at each side of the cut in the rope. The seizing shall be at a distance from the end of the rope equal to the length of the tapered portion of the socket plus the length of the portion of the rope to be turned in.
(a) Babbitt Metal
(1) Heating of Babbitt. The babbitt shall be heated to a fluidity just sufficient to char a piece of soft wood such as white pine without igniting it. Care shall be taken not to overheat the babbitt sufficiently to damage the rope.
(2) Heating of Socket Basket and Pouring of Babbitt. The rope socket basket shall be heated by a blowtorch flame sufficiently to prevent chilling of the babbitt and to ensure that the babbitt, when poured, will completely fill the basket, including all the spaces between the rope strands. Following this, the molten babbitt shall be poured slowly and evenly into the basket until it is filled to a point level with the top of the opening in the large end.
(b) Thermosetting Resin Composition
(1) The manufacturer's directions shall be strictly followed in handling, mixing, pouring, and curing the resin material.
(2) New containers of resin and catalyst shall be used for each set of rope sockets. The entire quantity of resin and catalyst shall be mixed when the containers are opened.
(3) Resin sockets shall not be poured at a temperature below 16°C (60°F) without first warming the socket and the resin composition to 21°C to 32°C (70°F to 90°F). The socket shall be permitted to be warmed using the electrical resistance heating devices intended for curing resin sockets.
(4) Curing of resin sockets shall be accomplished by heating at elevated temperature following the manufacturer's suggested schedule and directions. Cure time shall not exceed 30 min. Electrical resistance heating devices designed to fit around the sockets, or other means of providing controlled, evenly distributed heat, shall be used to provide the elevated temperature for curing. Open flames or exposed electrical resistance heating elements shall not be used.
(5) Upon completion of the socketing, the label from the container of resin shall be attached to one of the rope sockets for inspection purposes and shall be suitably protected.
(a) the embedment medium is visible at the small end of the socket
(b) the bends of all the individual rope strands (see 126.96.36.199.5) are approximately the same height above the embedment medium and are visible within the range of not less than one-half the diameter of the rope strand above the embedment medium and that there is not more than 1.5 mm (0.06 in.) clearance between the embedment medium and the underside of the bend in the rope strand
(c) no loss of rope lay has occurred where the wire rope enters the socket