| abstract |
A chain is provided in which an alloy coating layer suppressing iron reactions is formed on the surface and hence a paint film formed on the alloy coating layer has satisfactory adhesiveness, high strength, and high uniformity so that repair after assembling is not required and the chemical resistance is maintained satisfactorily. n A chain includes inner plates, bushes, outer plates, connecting pins, and rollers. Each constituent component includes: a zinc-aluminum-magnesium alloy coating layer formed on an iron-based basis material by impact plating; and a paint film formed on the zinc-aluminum-magnesium alloy coating layer, containing zinc and barium sulfate, and constructed such that at least one kind of resin selected from a group consisting of urethane resin, epoxy resin, and acrylic resin is hardened. |