{"id":31043,"date":"2026-08-15T13:07:47","date_gmt":"2026-08-15T13:07:47","guid":{"rendered":"https:\/\/doingcable.com\/?p=31043"},"modified":"2026-08-15T13:07:49","modified_gmt":"2026-08-15T13:07:49","slug":"what-is-a-copper-rod-breakdown-machine","status":"publish","type":"post","link":"https:\/\/doingcable.com\/ar\/what-is-a-copper-rod-breakdown-machine\/","title":{"rendered":"\u0645\u0627 \u0647\u064a \u0645\u0627\u0635\u0629 \u0633\u062d\u0628 \u0642\u0636\u0628\u0627\u0646 \u0627\u0644\u0646\u062d\u0627\u0633\u061f"},"content":{"rendered":"

A \u0622\u0644\u0629 \u0633\u062d\u0628 \u0642\u0636\u0628\u0627\u0646 \u0627\u0644\u0646\u062d\u0627\u0633<\/a><\/strong> (also called Rod Breakdown Machine or RBD machine) is the primary high-reduction wire drawing equipment in copper cable production. It continuously draws \u00d88 mm low-oxygen or oxygen-free copper rods through a series of dies (typically 9\u201313 passes) down to intermediate wire diameters of \u00d81.2\u20134.5 mm. Most modern lines integrate continuous annealing, producing soft or semi-hard copper wire ready for further intermediate drawing, stranding, or insulation.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

This machine forms the first critical stage after continuous casting\/rolling of copper rod and directly determines surface quality, conductivity, elongation, and downstream process stability for power cables, control cables, and building wires.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

How Does a Copper Rod Breakdown Machine Work? Process Principle and Technology<\/h3>\n\n\n\n

The process begins with \u00d88 mm copper rod (ETP or oxygen-free) fed from a pay-off stand. The rod is straightened, then pulled through successive tungsten-carbide or polycrystalline diamond dies mounted on a horizontal tandem line of \u00d8400\u2013450 mm capstans. Each pass reduces cross-sectional area by approximately 20\u201332 %. Full-immersion or spray lubrication and cooling control heat and friction. An optional continuous annealer (horizontal DC or AC type, typically 45\u201370 V \/ 4000\u20136000 A) softens the wire immediately after the final die. Tension is maintained by a dancer or accumulator before dual-spool take-up (PND500\/630), single spool, or coiler.<\/p>\n\n\n\n

\n
\u0627\u0633\u062a\u0639\u0644\u0645 \u0627\u0644\u0622\u0646<\/a><\/div>\n<\/div>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Two main drive architectures exist:<\/p>\n\n\n\n

    \n
  • Gear-driven (single-motor)<\/strong>: All or most capstans linked by gears. Lower capital cost, higher slip, more die sets required for different sizes.<\/li>\n\n\n\n
  • Individual-motor (multi-motor \/ shunt drive)<\/strong>: Each capstan driven by its own AC servo or inverter motor. Near-zero or controlled micro-slip, flexible elongation ratios, faster size change, lower energy consumption (often 20 % savings), and better surface quality.<\/li>\n<\/ul>\n\n\n\n

    \u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u062a\u0642\u0646\u064a\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h4>\n\n\n\n
      \n
    • High Productivity<\/strong> \u2013 Mechanical speeds reach 25\u201330 m\/s depending on model and final diameter, supporting continuous 24\/7 industrial operation.<\/li>\n\n\n\n
    • Superior Wire Quality<\/strong> \u2013 Tungsten carbide coated capstans and optimized die matching deliver excellent surface finish and dimensional consistency required for electrical conductivity standards.<\/li>\n\n\n\n
    • Energy Efficiency<\/strong> \u2013 Individual servo or AC motor drives eliminate gear-mesh losses and allow selective motor operation, reducing specific energy consumption (industry references show ~110 kWh\/t vs higher values for conventional gear systems).<\/li>\n\n\n\n
    • Process Flexibility<\/strong> \u2013 Quick die change capability, adjustable elongation ratios, single or dual-rod operation, and optional continuous annealing.<\/li>\n\n\n\n
    • Reliability & Low Maintenance<\/strong> \u2013 Heavy-duty cast or fabricated frames, immersion lubrication systems, and robust electrical control (PLC + HMI) ensure stable long-term performance.<\/li>\n\n\n\n
    • Safety & Operator Convenience<\/strong> \u2013 Automatic bobbin change options, wire-break detection, and user-friendly touch-screen interfaces.<\/li>\n<\/ul>\n\n\n\n
      \"\"<\/figure>\n\n\n\n

      Technical Parameters Comparison of Typical Models<\/h3>\n\n\n\n
      Model Type<\/th>Inlet \u00d8<\/th>Outlet Range<\/th>Max Dies<\/th>Max Speed<\/th>Capstan \u00d8<\/th>Drive Type<\/th>Typical Power<\/th>Annealing Option<\/th><\/tr><\/thead>
      LHD \/ LWHD-450\/9<\/td>\u0668 \u0645\u0644\u0645<\/td>2.0\u20134.2 mm<\/td>9<\/td>20\u201325 m\/s<\/td>450 mm<\/td>Gear or Individual<\/td>200\u2013280 kW<\/td>Horizontal 5000 A<\/td><\/tr>
      LHD \/ LWHD-450\/11<\/td>\u0668 \u0645\u0644\u0645<\/td>1.6\u20134.2 mm<\/td>11<\/td>22\u201328 m\/s<\/td>450 mm<\/td>Gear or Individual<\/td>250\u2013300 kW<\/td>Horizontal 5000\u20136000 A<\/td><\/tr>
      LHD \/ LWHD-450\/13<\/td>\u0668 \u0645\u0644\u0645<\/td>1.2\u20134.5 mm<\/td>13<\/td>25\u201330 m\/s<\/td>450 mm<\/td>Gear or Individual<\/td>280\u2013350 kW<\/td>Horizontal 5000\u20136000 A<\/td><\/tr>
      Double-head versions<\/td>2\u00d78 mm<\/td>2\u00d71.3\u20133.5 mm<\/td>9\u201313<\/td>21\u201328 m\/s<\/td>450 mm<\/td>Individual preferred<\/td>900\u20131200 kVA<\/td>Dual annealer<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Data reflect current industrial specifications from leading manufacturers. Individual-motor machines allow production of multiple outlet sizes with fewer die sets and support quick die-change systems.<\/p>\n\n\n\n

      Selection Logic and Application Guide for Cable Manufacturers<\/h3>\n\n\n\n

      Select based on annual volume, target wire sizes, and quality requirements:<\/p>\n\n\n\n

        \n
      • High-volume power cable plants (>3000\u20135000 t\/year intermediate wire) prefer individual-motor 13-die lines with continuous annealing for consistent soft wire (elongation \u226530\u201335 %).<\/li>\n\n\n\n
      • Plants requiring frequent size changes benefit from multi-motor designs with independent elongation control.<\/li>\n\n\n\n
      • Oxygen-free copper or high-conductivity grades demand full-immersion lubrication, precise tension control (\u00b12 % or better), and tungsten-carbide coated capstans to minimize powder and surface defects.<\/li>\n\n\n\n
      • Downstream processes (intermediate drawing to 0.5\u20131.6 mm or direct stranding for Class 2 conductors) dictate the exact outlet diameter range.<\/li>\n<\/ul>\n\n\n\n

        Typical output feeds multi-wire drawing lines, tubular or planetary stranders, or direct insulation for building wire.<\/p>\n\n\n\n

        Standards, Quality Requirements and Failure Prevention<\/h3>\n\n\n\n

        Finished wire must meet conductivity \u2265100 % IACS (or \u2265101 % for OF copper), dimensional tolerance, and mechanical properties aligned with IEC 60228 conductor classes and relevant GB\/T copper rod\/wire standards. Surface quality is critical: scratches, powder, or ovality increase break rates in subsequent fine drawing.<\/p>\n\n\n\n

        \u0623\u0646\u0645\u0627\u0637 \u0627\u0644\u0641\u0634\u0644 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0648\u0643\u064a\u0641\u064a\u0629 \u0627\u0644\u0648\u0642\u0627\u064a\u0629 \u0645\u0646\u0647\u0627:<\/p>\n\n\n\n

          \n
        • Excessive die wear or wire breaks from incorrect reduction ratio or poor lubrication \u2192 maintain emulsion concentration 8\u201315 %, temperature 30\u201345 \u00b0C, and change dies on scheduled intervals rather than after failure.<\/li>\n\n\n\n
        • Capstan scoring \u2192 use tungsten-carbide coating and ensure proper immersion level.<\/li>\n\n\n\n
        • Uneven annealing (hard spots) \u2192 stabilize current\/voltage and line speed; monitor elongation after annealing.<\/li>\n\n\n\n
        • Gear-box or bearing overheating on single-motor machines \u2192 regular oil analysis and vibration monitoring.<\/li>\n<\/ul>\n\n\n\n

          Modern PLC + HMI systems store recipes, provide real-time monitoring of speed, tension, annealing current, and length, and support remote diagnostics.<\/p>\n\n\n\n

          Industry Trends 2024\u20132026<\/h3>\n\n\n\n

          Individual-motor designs with micro-slip control continue to gain share due to energy efficiency, lower scrap, and flexibility. Double-wire configurations increase throughput without proportional floor-space increase. Integration with upstream continuous casting lines and downstream multi-wire drawing is becoming standard for turnkey copper conductor plants. Digital features (recipe management, predictive maintenance) reduce changeover time and improve overall equipment effectiveness.<\/p>\n\n\n\n

          Key Takeaways<\/strong><\/p>\n\n\n\n

          A Copper Rod Breakdown Machine is the foundational high-reduction drawing unit that converts \u00d88 mm copper rod into high-quality intermediate wire (\u00d81.2\u20134.5 mm) with optional continuous annealing. Choice between gear-driven and individual-motor architectures, number of dies, and annealing capacity directly determines productivity, energy use, surface quality, and suitability for subsequent stranding or fine drawing. Proper selection and maintenance deliver reliable long-term production of IEC-compliant copper conductors.<\/p>\n\n\n\n

          \"\"<\/figure>\n\n\n\n

          For detailed technical proposals, layout drawings, capacity calculations based on your annual tonnage and target diameters, or customized individual-motor \/ gear-driven configurations,<\/p>","protected":false},"excerpt":{"rendered":"

          A Copper Rod Breakdown Machine (also called Rod Breakdown Machine or RBD machine) is the primary high-reduction wire drawing equipment<\/p>","protected":false},"author":1,"featured_media":31049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[565],"tags":[],"class_list":["post-31043","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-en"],"_links":{"self":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/posts\/31043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/comments?post=31043"}],"version-history":[{"count":1,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/posts\/31043\/revisions"}],"predecessor-version":[{"id":31050,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/posts\/31043\/revisions\/31050"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media\/31049"}],"wp:attachment":[{"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/media?parent=31043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/categories?post=31043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/doingcable.com\/ar\/wp-json\/wp\/v2\/tags?post=31043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}