Coiled steel strip with solid lubricant coating

Details Coiled steel strip with solid lubricant coating Coiled steel strip with solid lubricant coating

B - Operations, Transporting

32

B

117/116, 117/240

B32B 15/04 (2006.01)

Patent

CA 1325931

ABSTRACT A coil of pre-lubed steel strip has a steel strip substrate coated on each surface with a uniform coating of solid lubricant. The coating has a coating weight greater than 20 mg/ft.2 (0.22 g/m2) for lubricity during cold deforming of the strip, as by stamping or drawing. The coating weight is less than 100 mg/ft.2 (1.08 g/m2) to prevent slippage during operations incident to blank- ing of the strip prior to cold deforming. The coating has a needle penetration hardness in the range 9-250. Various procedures for applying the coating are de- scribed.

608717

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