Large-Scale Machine Tool Castings

Support custom orders with images

Large-Scale Machine Tool Castings：

1.Key Process Characteristics：

Casting Methods:Primarily resin sand casting(high precision),lost foam casting(complex structures),or V-process casting(smooth surface finish)

Common Materials:HT250/HT300 gray iron(high rigidity),QT500-7 ductile iron(impact resistance),G20 alloy steel(heavy-duty machine tools)

Size Range:Single-piece weight up to 5-80 tons,with maximum machining lengths exceeding 20 meters(e.g.,gantry milling machine beds)

Accuracy Standards:Critical guideway surfaces achieve CT8-CT10 casting tolerance,post-machining flatness≤0.02mm/m

2.Core Advantages

High Stability:Gray iron's natural graphite structure provides vibration damping,with a coefficient 3-5 times higher than steel

Cost Efficiency:40%lower material costs compared to welded structures,with no welding-induced stress deformation

Minimal Thermal Deformation:Excellent heat dissipation properties reduce thermal distortion during high-speed machining

Design Flexibility:Allows for integrated structural optimization(e.g.,internal rib reinforcement and coolant channels)

3.Typical Applications

Heavy-Duty Machine Tools:CNC lathe beds,gantry machining centers,large boring mills

Precision Equipment:Coordinate grinding machine bases,high-precision gearbox housings

Special-Purpose Machines:Wind turbine bearing housings,hydropower turbine components

4.Technical Innovations

Low-Stress Casting:Proprietary annealing processes(650°C×8h)to eliminate residual stresses(>90%stress relief)

Composite Casting:Locally reinforced with chilled iron(hardness up to HRC 45)on guideway surfaces

Digital Simulation:MAGMAsoft analysis optimizes gating systems,reducing shrinkage defects by 70%