| abstract |
A chain is provided in which an iron-ion-suppression coating layer of an alloy is formed on the surface, and thus a paint layer formed on the alloy coating layer has a satisfactory adhesion effect, high strength, and high uniformity, so that post-assembly repair is not required and maintaining satisfactory chemical resistance. A chain (10) comprises inner plates (11), bushings (12), outer plates (13), connecting pins (14) and rollers (15). Each component comprises a coating layer of a zinc-aluminum-magnesium alloy formed by mechanical plating on an iron-based base material, and a resist layer formed on the zinc-aluminum-magnesium alloy coating layer and zinc and Contains barium sulfate and is so constituted that at least one kind of resin selected from a group consisting of a urethane resin, an epoxy resin and an acrylic resin is cured. |