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                    HOME             ABOUT US            CASE STUDIES            CONTACT US             CHINESE
          Innovation Based on Technology , Business Depend on Integrity
          Dacromet

          Zinc-based coatings

          Metallic powder flakes
          Various corrosion-resistant paints

          Solid lubricant films

          Ceramic coatings for High-temperature
          Zn-based coatings for High-temperature
          Email:hangda@hdacro.com
          Tel:86-24-88485717
          Fax:86-24-88485782
              Products

              As a new type of anti-corrosion coating on metal surface, Dacromet is considered a replacement of electroplated zinc and thermally dip-coated zinc. The key lies in the preparation of the superfine flake-like Zn-Al powders. The dacromet with dimension of 10×10×0.1μm is manufactured by Hangda's unique technique ( China national patent: ZL021449678), which meets the international standard.
               Hangda offers HDX320, HDX350 and HDX380 series Dacromet products.  

          Physical and chemical properties

          Properties

          range of values

          pH

          3-5

          Viscosity (4 cups)

          20-40

          Density g/cm 2 at 25± 2 ℃ (77 o F)

          1.30-1.36

          Dispersive degree 25± 22 ℃ (77 o F)

          After 4h, no obvious delamination, no sediment of metal powder.

                                          Corrosion properties

          No.

          Thickness(μm)

          Quantity (mg/cm 2 )

          Lifetime in neutral Salt spray (h)

          1

          4

          180

          240

          2

          5

          225

          480

          3

          8

          360

          720

          4

          9

          405

          960

          Other performance

          No.

          Item

          Detailed description

          1

          Fast corrosion test

          no red rust after 1.5h

          2

          Adhesion strength

          (tested by adhesive tape)

          No delamination; color change of adhesive tape and Zn-Al particle sticking are allowed

          3

          heat-resistance (adhesion strength) ( 150 ℃ , 77 o F)

          After 3h treatment, there does not appear delamination , color change of adhesive tape and Zn-Al particle sticking are allowed

          4

          Moisture and heat resistance

          After 240h, there is no red rust, froth or delamination

          Dacromet Coating Procedures:
             Pre-treatment: surface cleaning → sandblast → dipping in solution→spin dryingCuring: pre-heating at 60~ 80 ℃ (140~176 o F) for 10min→ curing at 300 -320 ℃ (572-608 o F) for 20-30min →rapid cooling to room temperature
          Photograph:
          SEM micrographs of metal powders; certificate of granting of patent


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          Shenyang Hangda Technology Co., Ltd. Liaoning China
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