1045 steel can be cold-worked via room-temperature plastic deformation processes.As a medium carbon steel with limited plasticity, it requires strict process control:
  • Cold drawing:Most common; spheroidizing annealed material + controlled deformation + intermediate/stress-relief annealing → high-precision bars/wires.
  • Cold bending:Feasible; anneal to soften, avoid small bending radii to prevent cracking.
  • Cold heading:Only for small-deformation simple parts (e.g., small bolt heads); needs spheroidizing annealing; not for large/complex parts.
  • Cold extrusion:High difficulty; only for small deformations; requires good lubrication + annealing; not for large deformations.
Core: Annealing for softening, controlled deformation, and stress relief are the key requirements.