ADEL F BASTAWROS
Engineers in Bethlehem, PA
License number
Pennsylvania PE043684E
Category
Engineers
Type
Professional Engineer
Address
Address
Bethlehem, PA 18017
Professional information
Embossed Cold Rolled Steel With Improved Corrosion Resistance, Paintability, And Appearance
US Patent:
5552235, Sep 3, 1996
Filed:
Mar 23, 1995
Appl. No.:
8/409219
Inventors:
Adel F. Bastawros - Bethlehem PA
John G. Speer - Bethlehem PA
Leo J. Deistler - Valparaiso IN
Eugene H. Schuchert - Iowa City IA
John G. Speer - Bethlehem PA
Leo J. Deistler - Valparaiso IN
Eugene H. Schuchert - Iowa City IA
Assignee:
Bethlehem Steel Corporation - Bethlehem PA
International Classification:
B32B 1518, B21B 2700
US Classification:
428687
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.
Method Of Determining Slope Angles Of Impression Walls And Depths Of Impressions On An Embossed Sheet Surface
US Patent:
5780726, Jul 14, 1998
Filed:
Aug 28, 1996
Appl. No.:
8/697562
Inventors:
Adel F. Bastawros - Bethlehem PA
John G. Speer - Bethlehem PA
John G. Speer - Bethlehem PA
Assignee:
Bethlehem Steel Corporation
International Classification:
G01N 3320
US Classification:
73105
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.