How to Select the Appropriate Cutting Method for Mild Steel Heavy Plates

How to Select the Appropriate Cutting Method for Mild Steel Heavy Plates
I. Selection Based on Plate Thickness
1. Thin to Medium-Thick Plates (≤30mm)
Recommended Methods: Laser Cutting or Plasma Cutting
Analysis:
Laser Cutting: Offers extremely high precision (±0.1mm) with smooth cutting edges, making it ideal for complex shapes or high-precision requirements (e.g., mechanical parts, molds).
Plasma Cutting: Features faster cutting speeds (up to 3-5 times that of laser cutting) and lower costs, suitable for mass production or applications with slightly lower precision demands (e.g., structural components, frames).
2. Thick Plates (>30mm)
Recommended Methods: Flame Cutting (Oxy-Fuel Cutting) or Waterjet Cutting
Flame Cutting: Melts steel through high-temperature oxidation, capable of cutting plates over 300mm thick at low cost. However, it produces a larger heat-affected zone (requiring subsequent grinding).
Waterjet Cutting: Eliminates thermal distortion and maintains high precision (±0.1mm), ideal for heat-sensitive applications or scenarios requiring preserved material properties (e.g., aerospace, precision machinery), albeit at higher costs.
II. Selection Based on Cutting Precision Requirements
1. High-Precision Demands (e.g., ±0.1mm)
Recommended Methods: Laser Cutting or Waterjet Cutting
Laser Cutting: Provides excellent edge perpendicularity and burr-free finishes, suitable for precision machining.
Waterjet Cutting: Avoids thermal effects, ensuring undamaged material properties, ideal for applications demanding extreme precision and material integrity.
2. General Precision Demands (e.g., ±0.5mm)
Recommended Methods: Plasma Cutting or Flame Cutting
Plasma Cutting: Meets most industrial precision needs while offering high efficiency.
Flame Cutting: Cost-effective, suitable for thick-plate cutting where precision requirements are less stringent.