Tool Steel Metallurgy Fundamentals for High Volume Battery Component Manufacturing Dies
Powder metallurgy tool steels with cryogenic phase stabilization eliminate edge chipping and cut amortized tooling costs by over eighty percent in battery dies.
Nickel Plated Steel Deep Drawing
Meaning
Cold forming processes that shape nickel-plated sheet steel into high-aspect-ratio containers are standard in cylindrical battery housing production. Nickel plated steel deep drawing utilizes a series of progressive dies and punches to stretch the metal strip into a cup shape without rupturing the protective coating. This method enables the high-speed production of protective enclosures for consumer and electric vehicle batteries.
The process requires a material with high ductility, and it fails if the metal sheet exhibits excessive variation in thickness.
Material Behavior
The nickel coating behaves as a ductile layer that flows along with the underlying steel substrate during the draw. In nickel plated steel deep drawing, maintaining a continuous nickel layer prevents the steel from being exposed to the atmosphere.
Lubrication Requirement
To prevent metal-to-metal contact, high-performance liquid lubricants are applied to both sides of the sheet. Proper lubrication during nickel plated steel deep drawing minimizes friction, reducing the risk of tearing or scratching the protective nickel layer.
Barrier Protection
A continuous nickel layer provides essential corrosion resistance against the aggressive organic solvents and salts in battery electrolytes. Employing nickel plated steel deep drawing ensures that the final battery container resists internal chemical degradation over years of service.