What steel grade is best for roll forming rollers, and what treatment is required?
Direct Answer
The best steel grade for roll forming rollers is GCr15 bearing steel or Cr12MoV die steel. Rollers must undergo vacuum hardening (quenching) to HRC 58-62, followed by precision CNC turning and hard-chromium electroplating (0.05mm thickness) to maximize wear resistance.
Technical Deep-Dive & Solutions
Technical specification page. Detail heat treatment curve: preheating, high-temperature austenitizing, oil/gas quenching, and double tempering. Emphasize why hard chrome plating is vital.
Key Engineering Guidelines
- Precision Caliber: Ensure gradual bending stages to prevent metal micro-cracking and material stress.
- Premium Tooling: Use vacuum-quenched GCr15 or Cr12MoV die steel for rollers (HRC 58-62) with hard-chrome plating.
- Smart Design: Always calibrate lateral and vertical roll station alignment using a precise central wireline.
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