Henkel Ag & Company, Kgaa

Nihon Parkerizing Co., Ltd.

Atsushi Serita

Kazuhiko Mori

Hitoshi Ishii

Masanobu Tanaka

Takeshi Fujikawa

Shinobu Komiyama

Kosuke Hatasaki

Masumi Hara

To provide a lubricating coating agent for plastic working, containing a non-black solid lubricating material, and a metal material coated with the agent, which enable highly difficult forging that has been conventionally difficult to practically apply to anything except lubricating coating films containing a black solid lubricant typified by molybdenum disulfide. The problems can be achieved by means of a lubricating coating agent for plastic working, which is characterized by containing, at 5 mass % or more in terms of solid content ratio in a coating film, a calcium sulfate hydrate with a particular scale-like crystal shape among calcium sulfate hydrates deposited by reacting a sulfuric acid or a sulfate with a calcium compound in water, and a metal material coated with the agent.

Lubricating coating agent for plastic working and method for producing the same

To provide a water-based lubricant for plastic working excellent in moisture absorption resistance and corrosion resistance, with which degradation in lubricating performances such as lubricity, workability and seizure resistance may not occur even under high-temperature/high humidity environments. A water-based lubricant for plastic working, comprising a resin component containing a copolymer or homopolymer of monomers having an ethylenically unsaturated bond, including at least maleic anhydride (A), an inorganic component (B), and a solid lubricating component (C), wherein maleic anhydride moieties of the resin component (A) are blocked with a nitrogen-containing compound at a blocking ratio of 10 to 80%, and unblocked maleic anhydride moieties are neutralized with an alkaline component at a degree of neutralization of 40 to 100%.

Water-based lubricant for plastic processing having excellent corrosion resistance and metal material having excellent plastic processability

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Tokyo, Japan

Atsushi Serita