Embossed cold rolled steel with improved corrosion resistance, p

Details Embossed cold rolled steel with improved corrosion resistance, p Embossed cold rolled steel with improved corrosion resistance, p

1995-03-23

1996-09-03

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Surface feature

428457, 722525, 492 37, 427327, B32B 1518, B21B 2700

Patent

active

055522351

ABSTRACT:
An embossed cold rolled metal (e.g. steel) sheet for use in manufacturing appliances and method of making same wherein the surface attributes of the embossed sheet are optimized to improve corrosion resistance of the painted product, promote uniform paint coverage of the sheet surface, reduce paint consumption, enable repainting without loss of pattern crispness, and provide consistent and aesthetically pleasing appearance of the painted sheet. The embossed sheet has a plurality of plateaus and impressions defined therein in a manner such that the arithmetic average surface roughness (Ra) of the plateaus is from about 50 to 100 microinches, the maximum impression depths over a given area are from about 0.0025 to 0.0032 inches, the impression walls define maximum slopes of from about 8-17 degrees, and there are no sharp corners or ridges at the transition points between plateaus and impressions.

REFERENCES:
patent: 3487674 (1970-01-01), Fujimoto
patent: 3613319 (1971-10-01), Takimura et al.
patent: 3619881 (1971-11-01), Bills et al.
patent: 4111032 (1978-09-01), Rault
patent: 4655136 (1987-04-01), Reiss et al.

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