SURFACE SETTING AGENT CONTAINING ZINC PHOSPHATE, ZINC PHOSPHATE TREATED STEEL PLATE, ZINC PHOSPHATE COATED STEEL PLATE, AND ZINC PHOSPHATE DISPERSANT

摘要

PROBLEM TO BE SOLVED: To provide a regular, uniform and dense zinc phosphate coating layer in a zinc phosphate layer treating step which is liquid and more stable than a conventional surface setting agent.;SOLUTION: The surface setting agent containing zinc phosphate is used for surface setting which is a pretreatment of the zinc phosphate coating to a metal. It contains zinc phosphate of 500-20,000 ppm, the grain size of the zinc phosphate is ≤ 3 μm, D₉₀ is ≤ 4 μm, and the pH value is 3-11.;COPYRIGHT: (C)2004,JPO