Water-based lubricating coating agent with excellent corrosion resistance and workability, and metal material

Abstract

A water-based lubricating coating agent includes a water-soluble silicate (A) and at least one water-soluble inorganic salt (B) selected from a tungstate, a phosphate and a borate, wherein the water-soluble silicate (A) and the at least one water-soluble inorganic salt (B) are blended such that a solid content mass ratio (B)/(A) falls within a range of 0.7 to 25.

1 . A water-based lubricating coating agent, the agent comprising a water-soluble silicate (A) and at least one water-soluble inorganic salt (B) selected from a tungstate, a phosphate and a borate, wherein the water-soluble silicate (A) and the at least one water-soluble inorganic salt (B) are blended such that a solid content mass ratio (B)/(A) falls within a range of 0.7 to 25. 
     
     
         2 . The water-based lubricating coating agent according to  claim 1 , wherein the agent comprises a resin component (C), and a solid content mass ratio (C)/{(A)+(B)} is 0.01 to 3. 
     
     
         3 . The water-based lubricating coating agent according to  claim 2 , wherein the resin component (C) is at least one selected from the group consisting of a vinyl resin, an acrylic resin, an epoxy resin, an urethane resin, a phenolic resin, a cellulose derivative, a polymaleic acid, a polyolefin, and a polyester. 
     
     
         4 . The water-based lubricating coating agent according to  claim 1 , wherein the agent comprises a lubricant (D), and a solid content mass ratio (D)/{(A)+(B)} is 0.01 to 6. 
     
     
         5 . The water-based lubricating coating agent according to  claim 4 , wherein the lubricant (D) is at least one selected from the group consisting of a wax, polytetrafluoroethylene, a fatty acid soap, a fatty acid metal soap, a fatty acid amide, molybdenum disulfide, tungsten disulfide, graphite, melamine cyanurate, an amino acid compound of layered structure, and a layered clay mineral. 
     
     
         6 . A metal material with a lubricating coating film of 0.5 to 40 g/m 2  as coating weight, formed on a metal material surface by applying and drying the water-based lubricating coating agent according to  claim 1 . 
     
     
         7 . A metal material with a lubricating coating film of 0.5 to 40 g/m 2  as coating weight, formed on a metal material surface by applying and drying the water-based lubricating coating agent according to  claim 2 . 
     
     
         8 . A metal material with a lubricating coating film of 0.5 to 40 g/m 2  as coating weight, formed on a metal material surface by applying and drying the water-based lubricating coating agent according to  claim 3 . 
     
     
         9 . A metal material with a lubricating coating film of 0.5 to 40 g/m 2  as coating weight, formed on a metal material surface by applying and drying the water-based lubricating coating agent according to  claim 4 . 
     
     
         10 . A metal material with a lubricating coating film of 0.5 to 40 g/m 2  as coating weight, formed on a metal material surface by applying and drying the water-based lubricating coating agent according to  claim 5 .