Wire rope braiding length requirements are as follows.

1. The sleeve length is 15-20 times of wire rope diameter, the smaller sleeve is usually 40~50 times of wire rope diameter.

2. For important parts of the rope, the joint length can be increased to 80~100 times, so the butt wiring method is also called short insert.

3. Usually single-stranded joint of the big butt (big connection method) length is 180 times the diameter of the wire rope, that is, a wire rope head, according to three strands count, the severed length should be guaranteed greater than 3X180d two end length of 2X3X180d. For example, φ24.5 wire rope, after a big pull, must be inserted 2X3X180 X24.5 = 26460 mm.

4. Coated phosphate steel wire rope, steel wire by manganese or zinc-manganese phosphate treatment, phosphate film and grease compound effect, steel wire wear resistance, corrosion resistance, rust resistance jumped up comprehensively, fatigue life for the same structure glossy steel wire rope 3 times, can be verified by fatigue test fatigue life, is the upgrade of glossy steel wire rope, can also replace the first plating after pulling thin layer of galvanized steel wire rope.

A, the use of wire rope basic requirements.
Before use must check the rope has no damage; Steel wire rope can not have violent bending, ring, jump line, flattening and other defects; Steel wire rope knotted into a rope set, at least use three cards, such as the use of braided knot method, the length of its braided part is not less than 15 times the diameter of the steel wire rope, the shortest shall not be less than 30 centimeters; Forbidden to use knotting method to connect the steel wire rope, winch with steel wire rope shall not be with joints; Use such as oil leakage phenomenon (except for new rope), that indicates that the wire rope deformation is very big, should immediately stop work, check processing; Wire rope should often keep clean, generally once a year dip oil, with wire rope oil or cylinder oil, etc. (oil temperature shall not exceed 80 ℃); Lift molten metal (steel, iron water package) wire rope, rope core should be natural materials (asbestos or soft metal made) steel, iron water package should be placed on the insulation baffle, so as not to wire rope Heated; bundle with steel wire rope, when there are sharp-edged items should be padded, keep the balance of the hanging object, burning metal shall not be bundled.

Galvanized steel wire rope, hot-dip galvanized and electro-galvanized, stainless steel wire rope, 304 or 316 stainless steel, anti-corrosion but expensive outside polyethylene or polypropylene coated steel wire rope, based on steel wire rope will be completely with phosphate coated steel wire rope instead of glossy steel wire rope.