Working Principle & Application of Cold Drawing Machine

A cold drawing machine is key equipment for metal cold‑forming processing. Without heating raw metal bars or tubes, it pulls materials through moulds under mechanical force to reduce cross‑section size while improving surface finish and dimensional accuracy.
During operation, raw workpieces are clamped by traction units and forced to pass the drawing channel. Plastic deformation occurs at room temperature, which optimizes metal internal grain structure. Compared with hot processing, cold drawing delivers higher dimensional precision, smoother surface and enhanced mechanical strength, including tensile strength and hardness.
It is widely used to process steel, copper, aluminum and alloy materials. Finished products cover precision bars, seamless tubes and special‑shaped profiles for automotive parts, hardware fasteners and machinery manufacturing. Proper parameter setting on drawing speed and reduction rate helps avoid cracks or surface scratches, ensuring stable product quality in mass production.