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Tinplate Knowledge
1. Origin name of tinplate Knowledge
The commonly used tinplate is electrolytic tinplate (SPTE: Electrolytic Tinplate), scientific name: cold-rolled electrolytic tinplate, also called tinplate.
Characteristics of tinplate:
Opaqueness
good sealing
The reducing effect of tin: It can react with residual oxygen to achieve a better preservation effect.
Provide an effective source of iron (trace iron required by the body)
Tinplate also has the characteristics of corrosion resistance, non-toxicity, high strength, good ductility, etc., making it suitable as a metal packaging material.
Classification of tinplate Knowledge
Divided according to coating type
tin plating
Chrome plating Chrome-plated iron is darker in color, wear-resistant, and suitable for lids
Divided according to annealing method
CA – continuous annealing. Cold-rolled coils are unrolled into steel strips and then annealed in a protective atmosphere
BA one box annealing. The cold-rolled steel strip is annealed in a tightly coiled form in a furnace with a protective atmosphere according to a predetermined time-temperature cycle.
Box annealed tinplate: can produce soft tinplate with good processability; good crystallization directionality, suitable for processing
Continuous annealed tinplate: high tempering degree, which can save the thickness of tinplate; the material is uniform, and it is also suitable for high-speed can-making
The purpose of annealing is to reduce the hardness of steel, eliminate cold work hardening, improve the properties of steel, and restore the plastic deformation ability of steel. Eliminate the residual internal stress of steel, stabilize the structure, prevent deformation, and uniform the structure and chemical properties of steel.
Classification by rolling times
One cold rolling is generally >0.16mm
Secondary cold rolling generally ≤.16mm
Classified by material grade
Food grade MR
Chemical materials SPCC
MR steel: Most food packaging uses tin-plated steel base. There are few residual trace elements and excellent corrosion resistance.
Classified by passivation method
Ordinary passivation
Chrome-free passivation
Surface Treatment
Bright surface B
Rough surface R
Silver surface S
Matt surface M
Classified by width of tinplate knowledge
Tinplate steel plates are generally between 600-1000mm
Tinplate narrow belts below 600mm are customarily called narrow belts
Tinplate packaging
Tinplate packaging is divided into box plate packaging and coil plate packaging, and coil plate packaging is divided into horizontal packaging and vertical packaging.
The above is a display of the main parameters in the tinplate Knowledge. I hope it can help you better understand Tinplate. If you are looking for a Tinplate supplier, we hope you can contact us to give you a quote. If you need to find other suppliers, we are happy to help you.
