Q1: Why are extruded aluminium alloys preferred over cast iron for modern electric motor cases?
A1: Aluminium alloys provide roughly three times the thermal conductivity of cast iron, allowing the shell to dissipate motor stator heat exponentially faster to prevent insulation breakdown. Mechanically, aluminium motor housings reduce frame weight by approximately 40% to 60%, allowing electric vehicles or automated robotic arms to optimize kinetic energy efficiency metrics significantly.
Q2: How do your motor cases guarantee the tight concentricity tolerances required to prevent rotor friction?
A2: High-speed electric motors suffer severe vibration, bearing wear, and operational noise if the casing’s internal bore is out of round. Utilizing advanced vertical and horizontal multi-axis CNC lathe turning centers, we post-process our raw extrusions to maintain strict internal bore concentricity and step tolerances up to ±0.05mm, ensuring seamless press-fit assembly for your stator cores.
Q3: Can your facility extrude custom micro-slots or internal guide rails directly into the motor stator core walls?
A3: Yes, completely. Our advanced tool-steel die technology enables us to integrate custom anti-twist keys, positioning tracks, or localized guide slots straight into the profile’s internal cross-section during extrusion. This eliminates the high cost of post-extrusion longitudinal slot milling, providing substantial B2B production savings for your automated line.
Q4: What surface treatment do you recommend for motor casings working in high-humidity or industrial environments?
A4: For general applications, an architectural clear anodized layer (≥10 microns) is highly recommended. It hardens the outer aluminum skin, blocks sweat or grease tracking during assembly, and stops surface corrosion. For extreme environments, we offer heavy sandblasted pretreatments combined with industrial-grade chemical powder spray coatings to completely seal the framing matrix.
