1、 Industrial equipment castings
1. Machine tool castings
Core components: bed frame, column, crossbeam, slide seat
• Technical features:
Material: HT250-HT350 gray cast iron (flexural strength 250-350MPa)
Process: Resin sand casting (surface roughness Ra ≤ 25 μ m)+vibration aging for stress relief
◦ Application scenarios: Automotive cylinder machining centers, aviation five axis gantry machine tools
2. Forging equipment castings
Typical castings: press body, hydraulic cylinder body
• Key parameters:
◦ Ductile iron GGG60 (tensile strength 600MPa, elongation 3%)
Integrated casting structure, capable of withstanding nominal pressure of over 5000 tons
◦ Case: Stamping machine body for automotive panels
3. Heavy machinery castings
Application areas: Port cranes, shield tunneling machines
• Technological innovation:
Combination casting (bolted connection after segmented casting) to solve the problem of transportation exceeding the limit