Rolling Blades for Bimetallic Aluminum Finned Tubes

High-performance rolling blades for bimetallic (Al-Steel/Al-Cu) finned tube extrusion, optimized for durability and seamless bonding.

Core Compatibility:: Carbon Steel, Stainless, Titanium, Copper
Blade Material:: Tungsten-Cobalt Reinforced Alloy Steel
Operating Temp:: Optimized for Cold & Warm Extrusion
Surface Finish:: Precision Ground with Anti-Adhesion Coating

Technical Specifications

Bimetallic Extrusion Kinematics

The formation of bimetallic fins requires the rolling blades to act as both a forming tool and a bonding press. Nexmek blades are set at precise feeding angles that match the helix of the fin, ensuring that the aluminum flows into the desired profile without inducing excessive stress on the core tube.

Multi-stage progressive diameter blade sets
Calibrated for high-pressure helical formation
Optimized for aluminum grades 1050, 1060, and 1100

Technical Compatibility & Performance

Our tooling is used to manufacture some of the industry's most durable heat exchange components.

Parameter	Bimetallic Standards	Nexmek Precision
Max Operating Temp	300°C - 325°C	Stability Rated
Fin Height	Up to 16mm	±0.05mm
Bonding Pressure	High-Mechanical	Uniform Distribution
Core Wall Protection	Critical	Zero Indentation Design

Engineered for Aggressive Environments

Bimetallic tubes are the gold standard for Air-Cooled Heat Exchangers (ACHE) in oil refineries and petrochemical plants. Nexmek's rolling blades provide the precision necessary to ensure that the aluminum fins are robust enough to withstand high-pressure water cleaning and thermal cycling while protecting the structural core tube from corrosion.