• 专利标题:   Surface treatment method for corrosion-resistant sheet metal component, involves phosphating outer surface of sheet metal component, subjecting sheet metal to 3-level hot-dip galvanizing treatment, sandblasting surface of sheet metal component and spraying modified epoxy resin coating on sheet metal.
  • 专利号:   CN115386874-A
  • 发明人:   LIANG C, GAO Z, ZHOU X, ZHANG J, XIAO H
  • 专利权人:   NANTONG SHEETMAX METAL PROD CO LTD
  • 国际专利分类:   C09D105/08, C09D133/04, C09D163/00, C09D179/08, C09D197/02, C09D005/10, C09D007/61, C09D007/63, C23C002/02, C23C002/06, C23C002/26, C23C022/73, C23C026/00, C23C028/00
  • 专利详细信息:   CN115386874-A 25 Nov 2022 C23C-028/00 202306 Chinese
  • 申请详细信息:   CN115386874-A CN11225590 09 Oct 2022
  • 优先权号:   CN11225590

▎ 摘  要

NOVELTY - Surface treatment method for corrosion-resistant sheet metal component, comprises (a) phosphating the outer surface of the sheet metal component; (b) subjecting the sheet metal to 3-level hot-dip galvanizing treatment, where the thickness of the 3-level hot-dip galvanized layer is 50-70 um; (c) sandblasting the surface of the sheet metal component; (d) spraying the zinc-rich paint on the surface of the sheet metal to form a zinc-rich paint layer, where the spraying speed is 8-10 seconds/100 mm, the spraying temperature is 55-60℃, and the thickness of the zinc-rich coating layer is 20-22 um; and (e) spraying the modified epoxy resin coating on the surface of the sheet metal to form a modified epoxy resin coating layer, where the spraying speed is 8-12 seconds/100mm, and the thickness of the modified epoxy resin coating layer is 22-24 um. USE - Surface treatment method for corrosion-resistant sheet metal component. ADVANTAGE - The method provides the sheet metal with good surface anti-corrosion effect, satisfies the requirement of GB/T 10125-2012artificial atmosphere corrosion test salt spray test, and has good adhesive force.