The wire drawing machine's diameter reduction process is to gradually draw thicker metal wires (such as steel wire, copper wire, aluminum wire, etc.) through a series of wire drawing dies to achieve the required diameter and surface finish. This process is widely used in the field of metal processing, such as in the production of wires and cables, construction steel wires, welding wires, etc.
1. Wire drawing machine diameter reduction process principle
Basic principle: Using the traction force of the wire drawing machine, the wire passes through multiple diameter reduction dies (wire drawing dies) in sequence. Each time it passes through a die, the wire diameter decreases, the length increases, and the material strength increases.
Deformation characteristics:
Plastic deformation: The wire is compressed and plastically deformed on the working cone surface of the die, and the diameter gradually decreases.
Cold work hardening: As the deformation increases, the material strength and hardness increase, but the plasticity and toughness decrease.
2. Wire drawing machine diameter reduction process flow
1. Raw material preparation
Material selection: Usually wire rods or wires (such as low carbon steel, stainless steel, copper, aluminum, etc.).
Cleaning and rust removal: remove the oxide scale, oil stains, and rust on the surface of the wire to ensure that there are no impurities during the wire drawing process.
2. Wire drawing lubrication
Dry wire drawing: use solid powder lubricants (such as calcium-based and sodium-based lubricants).
Wet wire drawing: use liquid lubricants, suitable for high finish and high-speed wire drawing.
4. Annealing treatment (if necessary)
Intermediate annealing: intermediate annealing is performed on metals with severe cold work hardening to restore plasticity and facilitate continued drawing.
Continuous annealing: some high-demand processes use online annealing, which is suitable for non-ferrous metals such as copper and aluminum.
RKM Welded Mesh Machine
5. Finished product finishing
Diameter detection: use a laser diameter gauge or micrometer to detect the wire diameter tolerance.
Wire collection and packaging: wind the finished product into a disk, or shaft or cut it into a fixed length, and classify and package it according to specifications.