GINDIN: продукция Bridon-Bekaert (Брайдон) в России

65 BRIDON Oil and Gas Steel Rope Technical Information Rope Characteristics and Properties Calculated Minimum aggregate Breaking Force: Value of minimum aggregate breaking force is obtained by calculation from the sum of the products of the cross- sectional area (based on nominal wire diameter) and tensile strength grade of each wire in the rope, as given in the manufacturer’s rope design. Calculated Minimum breaking Force: Value of minimum breaking force based on the nominal wire sizes, wire tensile strength grades and spinning loss factor for the rope class or construction as given in the manufacturer’s rope design. Fill factor: The ratio between the sum of the nominal cross-sectional areas of all the load bearing wires in the rope and the circumscribed area of the rope based on its nominal diameter. Spinning loss factor (k): The ratio between the calculated minimum breaking force of the rope and the calculated minimum aggregate breaking force of the rope. Breaking force factor (K): An empirical factor used in the determination of minimum breaking force of a rope and obtained from the product of fill factor for the rope class or construction, spinning loss factor for the rope class or construction and the constant π /4. Minimum breaking force (Fmin): Specified value, in kN, below which the measured breaking force is not allowed to fall in a prescribed test and, for ropes having a grade, obtained by calculation from the product of the square of the nominal diameter, the rope grade and the breaking force factor. Minimum aggregate breaking force (Fe,min): Specified value, in kN, below which the measured aggregate breaking force is not allowed to fall in a prescribed test and, for ropes having a grade, obtained from the product of the square of the nominal rope diameter (d), the metallic cross- sectional area factor (C) and the rope grade (Rr). Norminal length mass: The nominal mass values are for the fully lubricated ropes. Rope torque: Value, usually expressed in N.m, resulting from either test or calculation, relating to the torque generated when both ends of the rope are fixed and the rope is subjected to tensile loading. Rope turn: Value, usually expressed in degrees per metre, resulting from either test or calculation, relating to the amount of rotation when one end of the rope is free to rotate and the rope is subjected to tensile loading. Initial extension: Amount of extension which is attributed to the initial bedding down of the wires within the strands and the strands within the rope due to tensile loading. Note: This is sometimes referred to as constructional stretch. Elastic extension: Amount of extension which follows Hooke’s Law within certain limits due to application of a tensile load. Permanent rope extension: Non-elastic extension. Rope Terminology Conversion Factors S.I. Units Force Mass Pressure/Stress Area Volume Length 1 kN = 0.101 972 Mp 1 UK tonf = 9964.02N 1 N = 0.101 972 kgf 1 lbf = 4.448 22N 1 kgf = 9.806 65 N 1 lbf = 0.453 592 kgf 1 kgf = 1 kp 1 UK tonf = 1.01605 tonne 1 N = 1.003 61 x 10 4 UK tonf 1 UK tonf = 9.964 02 kN 1 N = 0.2244 809 lbf 1 UK tonf = 2240 lbf 1 kgf = 2.204 62 lbf 1 short tonf 1 t = 0.984 207 UK tonf (USA) = 2000 lbf 1 kN = 0.100 361 UK tonf 1 kip (USA) = 1000 lbf 1 kN = 0.101 972 tonne (t) 1 kip = 453.592 37 kgf 1 kg = 2.204 62 lb 1 lb = 0.453 592 kg 1 tonne (t) = 0.984 207 UK ton 1 UK ton = 1.01605 tonnes (t) 1 kg/m = 0.671 970 lb/ft 1 lb/ft = 1.488 kg/m 1 kg = 1000 g 1 kip (USA) = 1000 lb 1 Mp = 1 x 10 6 g 1 tonne (t) = 9.80665 kN 1 m = 3.280 84 ft 1 ft = 0.304 8 m 1 km = 0.621 371 miles 1 mile = 1.609 344 km 1 N/mm 2 = 0.101972 kgf/mm 2 1 kgf/mm 2 = 9.806 65 N/mm 2 1 N/mm 2 = 1 MPa 1 kgf/mm 2 = 1 422.33 lbf/in 2 1 lbf/in 2 = 7.030 x 10 -4 kgf/mm 2 1 kgf/mm 2 = 0.634 969 tonf/in 2 1 tonf/in 2 = 1.57488 kgf/mm 2 1 N/m 2 = 1.450 38 x 10 -4 lbf/in 2 1 lbf/in 2 = 6894.76 N/m 2 1 N/m 2 = 1 x 10 -6 N/mm 2 1 tonf/in 2 = 1.544 43 x 10 8 dyn/cm 2 1 bar = 14.503 8 lbf/in 2 1 hectobar = 10N/mm 2 1 hectobar = 10 7 N/m 2 1 mm 2 = 0.001 55 in 2 1 in 2 = 645.16 mm 2 1 m 2 = 10.763 9ft 2 1 ft 2 = 0.092 903 0 m 2 1 cm 3 = 0.061 023 7 in 3 1 in 3 =16.387 1 cm 3 1 litre (1) = 61.025 5 in 3 1 in 3 = 16.386 6 ml 1 m 3 = 6.102 37 x 104 in 3 1 yd 3 = 0.764 555 m 3