Aluminum strip material having a brushed surface finish

Abstract

The method of preparing cold mill work rolls for forming a surface finish on a metal substrate includes the steps of placing a work roll on a grinder, truing the work roll, roughening the work roll, and performing at least one finishing pass on the work roll. The method may further include the step of sanding the work roll. The finished work roll may be inserted into a cold mill and the metal substrate cold rolled with the work rolls to achieve the desired surface finish. The metal substrate is aluminum or aluminum alloy strip which has the surface finish applied to one or both of its surfaces during cold rolling by the aforesaid finished work roll(s) to provide a surface finish on the aluminum strip that mimics a brush finish stainless steel.

1 - 31 . (canceled)  
   
   
       32 . A cold rolled aluminum or aluminum alloy strip or sheet having a brush surface finish formed by: 
 (a) providing at least one work roll of a cold mill by the steps of: 
 (1) placing the work roll in a grinder;  
 (2) truing the work roll;  
 (3) roughening the work roll; and  
 (4) performing at least one finishing pass to provide a scratch pattern that mimics a stainless steel brush pattern on the work roll; and  
   (b) cold rolling said aluminum or aluminum alloy strip while contacting said strip with the work roll provided in step (a) to impart at least one cold rolled surface on said aluminum or aluminum alloy strip having the appearance of a brush finish.    
   
   
       33 . (canceled)  
   
   
       34 . The cold rolled strip of  claim 32  having a width of between about 1″ to 69″ and a thickness of between about 0.004″ to 0.125″.  
   
   
       35 . The cold rolled strip of  claim 33 , wherein the width is between 15″ to 60″ and the thickness is between 0.005″ to 0.063″.  
   
   
       36 . The cold rolled strip of  claim 32  wherein the brush finish has a roughness value of between about 60 to 95 microinches Ra.  
   
   
       37 . A cold rolled aluminum or aluminum alloy strip having a finish on at least one side which mimics a stainless steel brush finish wherein said finish is applied by cold rolling.  
   
   
       38 . The cold rolled strip of  claim 37  having a width of between about 15″ to 60″ and a thickness of between about 0.005″ to 0.063″.  
   
   
       39 . The cold rolled strip of  claim 37  comprising an aluminum alloy selected from the group consisting of the 1000, 3000, 5000, 6000 and 8000 alloy families of the Aluminum Association Register.  
   
   
       40 . The cold rolled strip of  claim 37  wherein the brush finish on said strip has a surface roughness value of between about 60-95 microinches Ra.  
   
   
       41 . The cold rolled strip of  claim 37  which is anodized.