kinds fo tinplate
(1) Tin plating amount
It is expressed as the weight of tin plated on a tin plate on a certain area. In general, China stipulates the amount of tin plating in grams per square metre per square meter (grams per meter2), which is expressed internationally in terms of pounds/basic box×100. 11.2 g/m2 is equivalent to 1 pound/base box, and the international tinplate quantity is #100; the common 2.8 g/m2, 5.6 g/m2 is #25, #50.
The difference between thick and thick tin plating is that the amount of tin plating on the upper and lower surfaces is different. Generally, a thick thick mark is printed on one side.
(2) Tin plated surface
According to the final treatment after electroplating tin, generally can be divided into shiny and matt surface. The matt surface is made without tin reflow after electroplating. It can also be classified according to the surface smoothness of the rolls during smoothing.
The degree of conditioning is based on the use, which is mainly reflected in the mechanical properties of the strength and processing performance.
Tin plate surface defects
1 Surface inclusions 16 Burrs 31 Dirty
2 Layered 17 Folded 32 Ribs
3 Flap 18 Wrinkle 33 Steak Print
4 Iron Oxide 19 Footprint 34
5 Scale Peeling 20 Embossing 35 Hot Lacquer
6 Pinhole 21 Rolling 36 Sticking Tin
7 Shock Mark 22 Original Oil Spot 37 Wood Grain
8 color difference 23 oil spot 38 white edge
9 Tower 24 Rust Spot 39 Over Reflow
10 overflow edge 25 original scratch 40 less reflow
11 Loose rolls 26 Roll wounds 41 Not reflowed
12 Collapse 27 Edge Ribs 42 Quenching Spots
13 Margin 28 Mid-Range 43 Burn Point
14 Side Cracks 29 Parking Spots 44 Tinned Smudges
15 serrated edge 30 flat flower 45 tin scratches