Electrolytic tinplate coil isa type of steel coil that has been coated with a thin layer of tin through anelectrolytic process. This process involves immersing the steel coil in anelectrolyte solution and passing an electric current through it, which causestin ions to deposit onto the surface of the steel. This results in a protectivelayer of tin that provides corrosion resistance and enhances the appearance ofthe steel.
Tinplate coils are widelyused in the packaging industry, particularly for food and beverage containers,as well as for other applications where corrosion resistance and durability areimportant. The thin layer of tin also makes the steel more easily solderable,which is useful in certain manufacturing processes.
The description of anelectrolytic tinplate coil would typically include details such as thethickness of the tin coating, the dimensions of the coil (width, length, andthickness), the steel grade, and any specific surface treatments or coatingsapplied to the steel before or after the tin coating process. Additionally, thedescription might include information about the mechanical properties of thetinplate, such as its strength and ductility.
Specifications forelectrolytic tinplate coils can vary depending on the specific requirements ofthe application. However, here are some common specifications that may beincluded:
1. Tin Coating Thickness:Typically measured in either pounds per base box (lb/bb) or micrometers (m),the tin coating thickness indicates the amount of tin deposited onto the steelsubstrate. Common thicknesses range from 1.1 to 11.2 lb/bb or approximately 0.4to 2.0 m.
2. Steel Substrate Thickness:The thickness of the steel substrate, measured in gauge or millimeters (mm), isan important specification that affects the overall strength and durability ofthe tinplate. Common thicknesses range from 0.13 mm to 0.50 mm.
3. Coil Width: The width ofthe tinplate coil, measured in inches or millimeters, determines the size ofthe sheets or strips that can be produced from the coil. Common widths rangefrom 600 mm to 1200 mm or more.
4. Coil Weight: The totalweight of the tinplate coil, typically measured in pounds or kilograms, is animportant consideration for handling and transportation purposes. Common coilweights range from 3 to 10 metric tons or more.
5. Surface Finish: Thesurface finish of the tinplate coil can vary depending on the desiredappearance and end-use requirements. Common surface finishes include bright,stone, silver, and matte.
6. Steel Grade: The type ofsteel used as the substrate for the tin coating can vary depending on thedesired mechanical properties and corrosion resistance. Common steel gradesinclude MR (commercial quality), L (low carbon), and D (deep drawing).
7. Surface Coatings: Inaddition to the tin coating, tinplate coils may also be coated with othermaterials such as chromium oxide or organic coatings to provide additionalprotection or improve adhesion for specific applications.
These are just some of thespecifications that may be included in a typical electrolytic tinplate coilspecification. Depending on the application and manufacturer, additionalspecifications related to mechanical properties, dimensional tolerances, andsurface quality may also be provided.