Calculation formula of copper wire cost

Calculation formula of wire rod cost 1. Labor cost (C 1): labor cost (yuan/km) = (d× k ÷ v ÷ t ÷ 60 ÷ f ÷ s) × (1+a )×100. V: linear speed of the machine during processing (m/min); T: working hours of one day, calculated by 12 hours (hours/day); F: Operation rate of the machine in the process (%)S: Number of operating desks per person (units/person) A: Indirect labor cost (%) II. Raw material cost (C2): raw material cost (yuan/km) = u× b× (1+e) U: unit price of raw materials (yuan/kg) b: T: working hours of one day, calculated by 12 hours (hours/day); R: power exchange rate (yuan/kwh) g: power consumption ratio (%); V: linear speed of the machine in the process (M/min)F: operating rate of the machine in the process (%) IV. Depreciation expense of equipment and instruments (C4): depreciation expense of equipment and instruments (yuan/km) = h ÷ (y× 12× 25) ÷ (v× 24× 60×. V: linear speed of the machine during processing (M/min)F: operating rate of the machine during processing (%); Remarks: Inspection instruments V and F refer to external extruder V. Packaging cost (C5): packaging cost (yuan /km) = k ÷ l× C 1+ 0000k: unit price of packaging materials (yuan/piece) L: length of single wire per package (m/piece) VI. Wire cost: wire cost (yuan/root) C2= machine hour H 1× processing unit price P2+ working hours H2× processing unit price P3 H/ kloc-0/(h/km) = (1/r/60) ×1000× n h/. The number of machines operated by one person NH2...+H29+H20 varies according to different processes: h2 1= H 1 1/ when binding machines. Insulation working hours h22= insulation working hours h12/1; When twisting people, H23 = h13/7; h24 = h 14/ 10； h25 = h 15/ 1； Rewinding working hours h26= rewinding time h16/6; H _ 27 = H _ h 17/ 5 is a vertical belt winding machine; Working hours h28= machine hours h18/2; Weaving hours h29= weaving hours h19/6; H20= h 10/ 1。 Material consumption calculation formula-1. Conductor: consumption of a single strand of material (kg/km) = n× (π d2/4 )× σ× λ 2 (d: copper wire diameter (mm) σ: copper specific gravity 8.9. = n× (π d2/4 )× σ× n× c× λ/kloc-0 /× λ 2 (d: diameter of single copper wire (mm) σ: specific gravity of copper 8.9 N: number of stranded copper wires c: number of cable cores; λ 1: copper stranded wire twist ratio 1.0 15 λ2: collective twist ratio1.004); N is the number of cores. 2. Insulation A. Single strand material consumption (kg/km) = n× (π d2/4 )×××××× c××× λ 2 (d: copper wire diameter (mm) σ: insulation specific gravity PVC= 1.4 1, Sr-PVC =/kloc-. C: number of cable cores λ2: collective twist ratio 1.0 1) B stranded material quantity (kg/km) = n× ((D2-D2)/4+0.3048× D2/4 )×π×σ× c× λ 2 (d: stranded wire = d×π×σ/(w× (1 N)) (d: insulation outer diameter (mm) σ: unit weight of adhesive tape (kg) separation: +) 4. coating material amount (kg/km) = ((D2-D2)/4+D2/4× 0.2. LDPE=0.925) 5。 Woven material amount (kg/km) = (π d2/4 )× n× c× σ× λ (λ 2 = π 2× (d+5d) 2/(25.4× c/2/p) 2+1d: braided single strand. N: number of copper wires per ingot c: number of ingots σ: specific gravity of tinned copper 8.8 P: number of cross flowers per ingot; D: Formula 2 for calculating material consumption of knitting front diameter (mm) 1. The material consumption of a single conductor is a (kg/km) = (π d2/4 )×σ× c× λ 2× λ 3 (twist ratio (%) = √ ((π d'/p) 2+65438). D: the diameter of a single copper wire (mm); σ: specific gravity of copper = 8.9; C: number of cable cores; λ2: twist ratio of twisted pair (%); λ3: collective distortion rate (%); D': core diameter (mm): average lay length or total lay length (mm) 2. Copper stranded wire: material consumption (kg/km) = (π d2/4 )××× σ× n× c×× λ/kloc-0 /××××××× λ 3 (n: number of strands of copper stranded wire; λ 1: copper stranded wire twist ratio (%) 1. Insulation: single strand material consumption (kg/km)=(π(D2-d2)/4)×σ×C×λ2×λ3 2 ... steel strand material consumption (kg/km) = ((D2) D: insulation outer diameter (mm)) 3. Material consumption of packaging belt (kg/km) = w× t× σ (w: bandwidth (mm); T: belt thickness (mm); σ: with simulated weight) 4. Material consumption of wrapping tape (kg/km) = (d+t )×π× t×σ× (n/(n1)) (d: assembly outer diameter (mm); N: reciprocal of overlap or separation rate, overlap:-,separation: +) 5. Amount of coating material (kg/km) = (D2-D2+D2× K)/4× π× σ (d: outer diameter of core wire before coating (mm))；); D: outside diameter after coating (mm); K: tube extrusion = 0, semi-tube extrusion k = 0. 15 ~ 0.2, concentrated extrusion = 0.2 ~ 0.36 ... knitting material consumption (kg/km) = (π d2/4) × n× c× σ× λ (λ 2 = π 2× (d). a = cos- 1((c×n×d)/(2×π×d×F))； f = 1-√( 1-K)； D: diameter of braided single copper wire (mm); N: number of copper wires per spindle (6 ~ 9); C: number of spindles (16 or 24 spindles); σ: specific gravity of tinned copper is 8.8: cross flowers per inch; D: diameter before knitting (mm); A: knitting angle (); F: unidirectional knitting rate (%); K: The general loss rate of weaving shielding rate (%) is% 1, stranding 0.20% 2, insulation 0.50% 3, assembly 0.20% 4, vertical winding 0. 10% 5, weaving 0.65438. AL/MY-3.69 * 10-5； PVC- 1.45； Hemp filling-0.47 (1.775 g/m); Cotton thread-0.75 (0.288g/m); Calculation method of loss rate of PP film -0.74 ~: A.A 1+A3-A2 = W 1 (kg)