A rod breakdown machine for copper is a specialized wire drawing machine used to reduce the diameter of copper rods or wires. It plays a crucial role in the wire and cable industry, where copper wires of different sizes and gauges are required for various applications. Here are some key developments and features in rod breakdown machines for copper based on the search results:

Input Material:

Copper Rods: The machine takes copper rods as input material, typically with a diameter of 8 mm.
Copper Types: It can process both ETP copper (CU-ETP1) and oxygen-free copper (CU-OF1).
Wire Diameter Range:

Drawing Range: The rod breakdown machine is capable of reducing the diameter of copper rods down to a range between 1.4 and 3.2 mm.
Output Wire Size: The majority of the processed material, around 85%, is transformed into 1.8 mm input wire for further wire drawing processes.
Machine Design and Capabilities:

Motor and Drive: Some machines utilize international brands like Siemens for the motor, drive, and PLC components, ensuring reliable performance.
Bearings: High-quality NSK bearings are used in the machines for enhanced durability and smooth operation.
Gearbox and Drawing Capstan Box: The design may feature a mechanical seal construction between the gearbox and drawing capstan box. The separation of the drawing capstan box and gearbox, along with additional design elements like a reinforced seal and thrower ring, helps prevent lubricant and oil mixing, ensuring efficient operation.
Annealer: Some machines incorporate an annealing unit with an inner tank and heat exchanger. This design eliminates the need for an extra lubricant pool and facilitates convenient usage.
Advancements and Benefits:

Advanced Design: Ongoing developments in rod breakdown machines focus on advanced designs that enhance performance, efficiency, and ease of operation.
High Quality: The emphasis is on producing machines with high-quality components and materials to ensure reliability and longevity.