C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/47, 38/6
C21D 1/62 (2006.01) C25D 5/50 (2006.01)
Patent
CA 1040077
ABSTRACT OF THE DISCLOSURE An improved process and apparatus are provided, in order to brighten the surface of tin-plated layer of steel strip which has been tin-plated on a commonly known continuous electrolytic tin- plating line. The strip is first heated in a traditional continuous heating furnace for rapid fusion of its tin-plated layer. Then it is promptly quenched for solidification. In such quenching, the quenching is carried out in two stages aiming at obtaining excellent corrosion resistance as well as tending to prevent the occurence of quench stains. Thus, there is first maintained a relatively low quenching rate by spraying quenching liquid mist or a stream of high- pressure quenching liquid on both sides of the strip across the entire width, uniformly on the same horizontal level, in the air above the surface of quenching liquid in the quenching tank immediately following the heating furnace. Then the strip is passed into a quenching liquid in the quenching tank. There is maintained a relatively higher quenching rate by spraying a larger quantity of quenching liquid under high pressure onto both sides of the strip across the entire width, uniformly on the same horizontal level, beneath the surface of quenching liquid in the quenching tank. In this manner there is almost complete prevention of quench stains, improved corrosion resistance of the tin plated strip due to the formation of a uniform and dense alloy layer in the tin plated layer and there is a high speed quenching operation.
212654
Shiono Riichi
Tanaka Mizuo
Yamagishi Hidehisa
LandOfFree
Method and apparatus continuously quenching moving... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus continuously quenching moving..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus continuously quenching moving... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-498646