Conductive Cross Arm

1. Product Overview

2. Main Product Classification

2.1 Copper-Steel Composite Water-Cooled Conductive Cross Arm (Premium Standard Model)

• Material: Compound plate of high-conductivity oxygen-free copper + high-strength carbon steel, integral hollow box welding, built-in double-layer labyrinth cooling water channel
• Matching furnaces: 16,500–63,000kVA medium & large closed submerged arc furnaces, industrial silicon furnaces, ferroalloy furnaces
• Core advantages: Ultra-low resistivity, excellent current carrying capacity, strong structural rigidity, small vibration during electrode lifting; uniform internal water cooling, low surface temperature, long service life synchronized with furnace body
• Application: High-power, high-current fully enclosed furnaces with strict energy-saving and environmental protection requirements

2.2 Aluminum-Steel Composite Conductive Cross Arm (Lightweight Cost-Effective Model)

• Material: High-purity conductive aluminum clad steel plate, lightweight hollow box water-cooled structure
• Matching furnaces: 6,300–25,000kVA small & medium calcium carbide, silicomanganese, ferronickel furnaces
• Core advantages: Light self-weight, small lifting load of electrode hydraulic system, low manufacturing cost, easy transportation and installation
• Application: Open & semi-closed small and medium-capacity electric furnaces with moderate heat load

2.3 Integrated Short-Net All-in-One Conductive Cross Arm (Intelligent High-End Model)

• Upgraded configuration: Integral rear conductive copper base plate, built-in temperature & water flow detection sensor, high-strength insulated connecting flange, integrated quick-change electrode holder interface
• Matching furnaces: 33,000–63,000kVA ultra-large intelligent unmanned smelting furnaces
• Core advantages: Simplified overall short-net layout, fewer connecting joints, lower contact resistance; real-time cooling state monitoring, automatic over-temperature alarm, convenient online maintenance

3. Core Structure & Working Principle

1. Composite Conductive Arm Body
   
   
   Adopts copper/aluminum-steel double-layer composite plate. The copper/aluminum layer undertakes large-current conduction, while the steel layer provides mechanical bearing strength. Hollow rectangular box structure optimizes current distribution and suppresses skin effect.
2. Closed Circulating Water Cooling Channel
   
   
   Independent separated labyrinth water channel design eliminates local dead water overheating. Cooling water circulates inside the arm body to continuously take away joule heat generated by high current, keeping arm surface temperature below safe limit, avoiding insulation aging and thermal deformation.
3. Rear Conductive Transition Plate
   
   
   Integrally welded thick copper plate, directly connected with water-cooled cable terminals, large contact area, uniform current distribution and extremely low contact resistance.
4. Front Clamp Connection End
   
   
   Precision machined mounting surface matched with electrode holder, reliable locking structure, stable clamping force to prevent electrode offset and arc shaking.
5. Insulated Support Base
   
   
   High-temperature resistant integral insulation blocks isolate the charged cross arm from the electrode lifting stand column, eliminating electric leakage and short-circuit risks of the whole lifting system.

4. Core Product Advantages

4.1 Low Impedance & Significant Energy Saving

4.2 High Structural Rigidity & Stable Smelting Condition

4.3 Integrated Water Cooling, Long Service Life

4.4 Simplified Short-Net Layout, Lower Maintenance Cost

4.5 Lightweight Design, Small Lifting Load

4.6 Safe & Reliable Multi-Layer Protection

5. Applicable Industries & Furnace Capacity Range

• Ferroalloy smelting: Ferrosilicon, silicomanganese, ferronickel, ferrochrome, ferrovanadium submerged arc furnaces
• Chemical smelting: Industrial silicon, calcium carbide, yellow phosphorus melting furnaces
• Non-ferrous metallurgy: Copper slag, aluminum ash, lead-zinc closed refining electric furnaces
• Capacity coverage: 6,300kVA, 12,500kVA, 16,500kVA, 25,000kVA, 33,000kVA, 45,000kVA, 63,000kVA full-spec metallurgical furnaces

6. Optional Matching Configurations

1. Online real-time water temperature & flow monitoring alarm system
2. High-strength integral insulated support assembly
3. Quick-release integrated electrode holder connecting flange
4. Anti-spatter high-temperature protective cover for cross arm surface
5. Complete set of matching cooling water pipeline joints and filters

7. Full-Lifecycle Service Guarantee

1. Custom non-standard design: Optimize cross arm length, section size, cooling water flow and interface layout according to furnace transformer current, electrode diameter and workshop space
2. On-site technical survey: Professional engineers provide overall short-network matching optimization scheme
3. Strict factory inspection: Hydraulic pressure water leakage test, resistance detection, load vibration test and welding flaw detection before delivery
4. After-sales support: Whole arm warranty, long-term supply of composite plate, insulation blocks and other spare parts, nationwide on-site installation & maintenance