Requirements - Senze-Instruments Benelux

Senze-Instruments BENELUX
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Process & Quality Control

Requirements

Qualicoat > Quali Steel Coat
Assessment of QUALISTEELCOAT coating systems for the coater
required test by the  inspector in  the plant and in the  laboratory
  • dry film thickness
  • adhesion
  • direct impact resistance  test
  • gloss wet adhesion  (not applicable for coating systems on zinc and thermal  spray metallic layers)
  • neutral salt spray test
  • resistance to humidity

Laboratory and inspection equipment for Mechanical pre-treatment process
All coaters must have a
• dew-point-meter
• thermometer
• Dust-Tape-Kit ISO 8502-3 coaters with category C3-C5 must have in addition a roughness measurement device (if applicable)
• thickness measurement gauge for zinc layer thickness (if applicable

Laboratory and inspection equipment for chemical pre-treatment process
All coaters must have a
  • pH-meter
  • thermometer
Coaters with corrosivity category C3-C5 (if applicable) must have in addition a
  • thickness measurement gauge for zinc layer thickness
  • chemicals to determine the bath concentrations
  • conductivity meter
  • temperature test strip for drying oven
  • test solutions and equipment to test the chemical conversion coating per the chemicals  supplier’s instructions
  • test solutions for Zn and Al content (only if combined zinc aluminium pickling bath  and/or conversion coating bath is used)

Laboratory and inspection equipment for finished products
All coaters must have a
  • dry film thickness gauge
  • gloss meter 60º
  • cross cut tester or pull-off tester for adhesion
  • thermometer
The following equipment is necessary if applicable according the tables in chapter 3.6
  • recording instrument for object temperature and curing time with 4 measuring points
  • equipment for dew-point measurement
  • wet adhesion test equipment
  • Low voltage tester

Laboratory tests for the approval of Powder coating system
  • dry film thickness  
  • adhesion
  • direct impact resistance test
  • gloss
  • wet adhesion (resistance to  boiling water)  (not applicable for coating systems on zinc  and thermal spray metallic layers)
  • resistance to mortar (not necessary for QUALICOAT approved  systems)
  • neutral salt spray test
  • resistance to humidity
  • accelerated weathering

Laboratory tests for the approval of chromate-free pre-treatment systems
Type of test panel :

TYPE  Purpose                  Test panels composition       (zinc-phosphated)                                                         Dimension  min.                                  
D   mechanical  tests;      test panels steel DC01 / 1.0330                                                                                   140x70 mm 0.8–1.0 mm thick   
      corrosions  tests  
E    adhesion;                        test panels steel DC01 / 1.0330 + hot-dip galvanized acc. ISO 1461     140x70 mm 2.0 mm thick  
       corrosions  tests  
F    mechanical  tests;       continuous hot-dip-galvanized  steel DX51D+Z275 U / 1.0226              140x70 mm 0.8–1.0 mm thick
     corrosions  tests  

Renewal of an approval for a coating system
The tests required for the renewal application are the  same as for the initial application.
Any change in the base formula (binder, hardener, additives) of the coating product implies, however that it must be considered as a new product, which consequently requires a new  QUALISTEELCOAT approval.

Types of test panels
Type   Purpose                            Composition of panel                                                                                            Dimension
A         mechanical tests           test panels  bare steel + zinc phosphate + organic                               105 x 190 mm 0,75 mm thick
B          corrosion tests              substrate + complete coating  system                                                         140 x 70 mm DC01 1-2 mm thick
                                                            (eventual surface preparation + eventual metallic layer + eventual pre-treatment + organic layer)
C          outdoor exposureFlorida test panels EN AW5005  +organic layer                                           300 x 100 mm 1 mm thick


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