Water-containing lubricating film agent, surface treated metallic material, and method for forming water-containing lubricating film of metallic material

Abstract

A water-containing lubricant coating agent, used in metal plastic working, includes a water content of 3 to 50 mass %, at least one lipophilic lubricating component (A) and/or at least one solid lubricant (B) with cleavability dispersed in water, and at least one water-soluble lubricating component (C) selected from fatty acid components having 12 to 20 carbon atoms; wherein a mass ratio of (C)/[(A)+(B)]=0.05 to 0.5.

1 . A water-containing lubricant coating agent, on use in metal plastic working carried out in a water-containing state with a water content of 3 to 50 mass %, wherein at least one lipophilic lubricating component (A) and/or at least one solid lubricant (B) with cleavability are dispersed in water, and furthermore, at least one water-soluble lubricating component (C) selected from the group consisting of fatty acid components having 12 to 20 carbon atoms is dissolved in a water-phase side at a mass ratio of (C)/[(A)+(B)]=0.05 to 0.5. 
     
     
         2 . The water-containing lubricant coating agent according to  claim 1 , wherein the water-soluble lubricating component (C) comprises at least one selected from the group consisting of sodium salts and potassium salts of lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, and arachidic acid. 
     
     
         3 . The water-containing lubricant coating agent according to  claim 1 , wherein the water-soluble lubricating component (C) comprises sodium stearate and/or potassium stearate. 
     
     
         4 . The water-containing lubricant coating agent according to  claim 1 , wherein the lipophilic lubricating component (A) has a solubility parameter (SP value) of 10 or less, and the lipophilic lubricating component (A) comprises at least one selected from the group consisting of an oil (A1), an extreme-pressure agent (A2), a metal soap (A3), and a wax (A4) as follows:
 an oil (A1): at least one selected from the group consisting of mineral oils, animal and plant oils and fats, and synthetic oils;   an extreme-pressure agent (A2): at least one selected from the group consisting of phosphorus-based extreme-pressure agents, sulfur-based extreme-pressure agents, organomolybdenum-based extreme-pressure agents, and organozinc-based extreme-pressure agents;   a metal soap (A3): at least one selected from the group consisting of metal salts other than sodium salts and potassium salts of fatty acids having 12 to 20 carbon atoms;   a wax (A4): at least one selected from the group consisting of polyethylene waxes, polypropylene waxes, carnauba waxes, and microcrystalline waxes.   
     
     
         5 . The water-containing lubricant coating agent according to  claim 1 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (B1), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (BI): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         6 . The water-containing lubricant coating agent according to  claim 5 , wherein an inclusion amount of the lipophilic lubricating component (A) in the carrier particles (B2) is 5 mass % or more in mass ratio to a total mass of the carrier particles (B2). 
     
     
         7 . The water-containing lubricant coating agent according to  claim 1 , wherein the solid lubricant (B) is 30 μm or less in average particle size. 
     
     
         8 . The water-containing lubricant coating agent according to  claim 1 , which further comprises, as a binder, at least one selected from the group consisting of a water-soluble inorganic salt, a water-soluble organic salt, and a water-based resin. 
     
     
         9 . A water-containing lubricant coating formed on/over a metal material surface with the use of the water-containing lubricant coating agent according to  claim 1 , wherein a water content is 3 to 50 mass %. 
     
     
         10 . A surface-treated metal material, wherein the water-containing lubricant coating according to  claim 9  is formed on/over a metal material surface to be 0.1 g/m 2  or more as a coating amount in a water-containing state. 
     
     
         11 . A method for forming a water-containing lubricant coating for a metal material, the method comprising a contact step of bringing the metal material into contact with the water-containing lubricant coating agent according to  claim 1 , wherein the metal material is brought into contact at a treatment temperature at which the water-soluble lubricating component (C) can be dissolved in a water-phase side of the water-containing lubricant coating agent at a mass ratio of (C)/[(A)+(B)]=0.05 to 0.5 in the contact step. 
     
     
         12 . The method for forming a water-containing lubricant coating for a metal material according to  claim 11 , the method further comprising, prior to the contact step, a chemical conversion treatment step of coating a surface of the metal material with a chemical conversion coating. 
     
     
         13 . The water-containing lubricant coating agent according to  claim 2 , wherein the lipophilic lubricating component (A) has a solubility parameter (SP value) of 10 or less, and the lipophilic lubricating component (A) comprises at least one selected from the group consisting of an oil (A1), an extreme-pressure agent (A2), a metal soap (A3), and a wax (A4) as follows:
 an oil (A1): at least one selected from the group consisting of mineral oils, animal and plant oils and fats, and synthetic oils;   an extreme-pressure agent (A2): at least one selected from the group consisting of phosphorus-based extreme-pressure agents, sulfur-based extreme-pressure agents, organomolybdenum-based extreme-pressure agents, and organozinc-based extreme-pressure agents;   a metal soap (A3): at least one selected from the group consisting of metal salts other than sodium salts and potassium salts of fatty acids having 12 to 20 carbon atoms;   a wax (A4): at least one selected from the group consisting of polyethylene waxes, polypropylene waxes, carnauba waxes, and microcrystalline waxes.   
     
     
         14 . The water-containing lubricant coating agent according to  claim 3 , wherein the lipophilic lubricating component (A) has a solubility parameter (SP value) of 10 or less, and the lipophilic lubricating component (A) comprises at least one selected from the group consisting of an oil (A1), an extreme-pressure agent (A2), a metal soap (A3), and a wax (A4) as follows:
 an oil (A1): at least one selected from the group consisting of mineral oils, animal and plant oils and fats, and synthetic oils;   an extreme-pressure agent (A2): at least one selected from the group consisting of phosphorus-based extreme-pressure agents, sulfur-based extreme-pressure agents, organomolybdenum-based extreme-pressure agents, and organozinc-based extreme-pressure agents;   a metal soap (A3): at least one selected from the group consisting of metal salts other than sodium salts and potassium salts of fatty acids having 12 to 20 carbon atoms;   a wax (A4): at least one selected from the group consisting of polyethylene waxes, polypropylene waxes, carnauba waxes, and microcrystalline waxes.   
     
     
         15 . The water-containing lubricant coating agent according to  claim 2 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (B1), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (B1): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         16 . The water-containing lubricant coating agent according to  claim 3 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (BI), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (BI): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         17 . The water-containing lubricant coating agent according to  claim 4 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (B1), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (B1): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         18 . The water-containing lubricant coating agent according to  claim 13 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (B1), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (B1): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         19 . The water-containing lubricant coating agent according to  claim 14 , wherein the solid lubricant (B) comprises at least one selected from the group consisting of the following layered clay mineral (BI), carrier particles (B2), and poorly soluble crystalline inorganic salt (B3) as follows:
 layered clay mineral (B1): at least one selected from natural products and synthetic products of a smectite group, a vermiculite group, a mica group, a brittle mica group, a pyrophyllite group, and a kaolinite group;   carrier particles (B2): particles including the lipophilic lubricating component (A) between particles of and/or between layers of the layered clay mineral (B1);   poorly soluble crystalline inorganic salt (B3): at least one selected from the group consisting of phosphates, carbonates, oxalates, sulfates, metal hydroxides, and metal oxides, other than sodium salts and potassium salts.   
     
     
         20 . The water-containing lubricant coating agent according to  claim 15 , wherein an inclusion amount of the lipophilic lubricating component (A) in the carrier particles (B2) is 5 mass % or more in mass ratio to a total mass of the carrier particles (B2).