Iron Foil,Sheet,Disc,Rod

- Physical: Melting point 1538°C, density 7.874 g/cm³, with allotropic forms (α-Fe/ferrite, γ-Fe/austenite).

- Chemical: Prone to oxidation (rust formation) in moist environments; reacts with acids to form Fe²⁺/Fe³⁺ salts.

- Applications: Steel production (carbon alloying), construction, magnets, biological systems (hemoglobin cofactor).

High-Purity Iron Foil/Ribbon Rolling Technology

High-purity iron (typically ≥99.95% Fe, often referred to as "electronic grade") undergoes specialized processing to achieve ultra-thin (<100 μm) and uniform foils/ribbons. The process involves:

- Raw Material Preparation: Smelting electrolytic iron or sponge iron with strict impurity control (ppm-level O, C, S, P).

- Hot Rolling: Initial reduction at 1000–1200°C to break down cast structures and refine grains.

- Cold Rolling: Sequential passes at room temperature with lubrication to achieve sub-millimeter thickness, requiring precise roll alignment and tension control.

- Annealing: Stress relief at 700–900°C under inert gas to recrystallize grains and improve ductility.

- Surface Treatment: Acid pickling or electro-polishing to remove oxides and ensure mirror-like finishes.

Applications of High-Purity Iron Foil/Ribbon

- Electronics: Soft magnetic cores for inductors, transformers, and magnetic shielding in high-frequency devices.

- Aerospace: Lightweight magnetic components for navigation systems and electromagnetic compatibility (EMC) solutions.

- Medical: Implantable devices (e.g., orthopedic anchors) due to biocompatibility and corrosion resistance.

- Energy: Catalysts for hydrogen production, anode materials in Li-ion batteries, and fuel cell components.