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Coating inspection Instruments 15 products

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Coating inspection Instruments

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Coating inspection Instruments

Coating inspection Instruments

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  • Coating thickness Gauge - Film...

    A correct paint- or coating thickness is an important parameter in the surface treatment industry. The performance of a coating system is based upon correct application of this system following the paint manufacturers specification sheet. Each layer from primer to topcoat and individual intermediate layers are exactly specified with a minimum and maximum coating thickness. Often both a dry and wet film thickness is specified.

    Too low dry film thickness can lead to: Too high film thickness causes problems like:
    • Insufficient corrosion protection
    • Hiding power problems
    • Erosion
    • Grinning
    • Holidays
    • Rust Spotting
    • Undercutting
    • Extra material costs
    • Sagging (Sags), Runs
    • Alligatoring
    • Cracking
    • Mud Cracking
    • Tackiness
  • Adhesion

    Adhesion is the tendency of dissimilar particles and/or surfaces to cling to one another. The adhesive strength of paint and coatings are of crucial importance to enable the material to meet the basic functions of protection and decoration.

    Adhesion testing in the paint and coating industries is necessary to ensure the paint or coating will adhere properly to the substrates to which they are applied. Adhesion testing after the coating process will quantify the strength of the bond between substrate and coating, or between different coating layers or the cohesive strength of materials.

  • Appearance

    Appearance is the common situation where surface influences meet visual differences in perception of gloss and color. The impact of different gloss levels does have a great influence on a product as well on its color. The surface quality of a coated surface is often assessed by measuring gloss. Poorly applied coatings or cured paints will show a variety of gloss levels.

    Different focuses

    Gloss terms are divided in two different groups: Focus on reflected image is further divided in: Focus on surface is related to:
    • focus on the reflected image of an object on the surface
    • focus on the illuminated surface of an object
    • specular gloss
    • haze
    • image clarity
    • DOI (Distinctness of Image)
    • long-term waviness
    • short-term waviness
  • Surface Cleanliness

    A clean and well prepared surface is crucial for a successful coating performance.

    The pre-treatment process of an industrial coating job often consumes more time and budget than the actual paint application itself. 

    Surface preparation
    There are various methods and systems to prepare a surface prior to the coating application. Depending on the project and job specifications one could choose for hand cleaning like brushing, grinding or using needle hammers. Often grit blasting is utilised or shot blasting in automatic line for example. If no anchor pattern is required or already in place (ultra) high pressure water jetting, chemical cleaning or a simple wash down might be the solution. 

  • Climatic Conditions

    Temperature, humidity and related climatic parameters are important to many industrial processes and the application of paint and coatings is no exception to that rule. Measuring and controlling climatic parameters such as relative humidity, air-temperature, dewpoint and moisture is vital to a successful application of high-end coating systems. Incorrect climatic conditions during pre-treatment and application often lead to premature failing of coatings systems.

  • Deformation Resistance Scatch

    Physical properties of paint and coatings play an important role in the quality control. Depending on the application a coating is supposed to be extremely hard and rigid such as for example the coating on the hull of an ice-breaker. Automotive coatings however require a certain flexibility since the thin sheet metal of a car body is not fully rigid and a slamming hood should not cause the paint to break. Coil coated steel that is to be formed into products such as white goods or cladding should have excellent forming properties. 

    Several empirical tests 
    There are a number of different empirical tests that are used to deform test panels and so assess the deformation resistance or flexibility. Coatings that fail such a test will crack and/or detach from the substrate. Also there is quite some overlap between different test systems and their results. Many tests provide information about similar parameters such as elasticity / forming resistance, adhesion, hardness, brittleness, stress resistance etc.. 

    Although some tests overlap there is no cross-reference for their results. 

    More information can be found in the section hardness/scratch resistance

    Commonly used tests
    Common tests used in the paint and coatings industry are: 

      • Bend test
        With this system a coated test panel or lacquered sheet metal is bent over a defined mandrel. Cylindrical mandrels in different diameters or conical mandrels are used. 

        The smaller the diameter the sharper the forming of the test panel which leads to elongation of the panel including the coating. A sharper deforming causes more stress to the coating which may lead to cracks or adhesion failure. 

        Cylindrical bend test are recognised to be more precise in comparison to conical bend tests which have the advantage that a range of mandrel diameters can be checked on just one panel.
      • Impact Test, or tubular impact test
        With an impact test a rapid deformation of a painted test panel is generated. A specified weight with a specified punch is dropped on a test panel from different heights. The damage on the sample is observed after the test and provides information about physical properties of the coating such as elasticity, hardness and adhesion. 

        For the paint industry there are different tests according ISO 6272 , ASTM D2794 and others. Each standard has its own specifics such as weight, punch shape, direct or indirect impact etc..
    • Cupping test 
      Cupping testers generate, in contradiction to impact testers, a gradual deformation of the sample. An indenter with a specified shape is slowly forced through the test panel under standardised conditions. During the deformation the panel is visually observed. The cupping value of a coating is the deformation point at which the coating starts to crack. 
      To perform this test correctly it is of utmost importance that the deformation is made gradually without any interruptions.
  • Porosity

    Coatings applied can have irregularities due to different circumstances. Surface uncleanness, paint differences and dust or air bubbles enclosed can cause pinholes, thin spots, cracks etc. To prevent an early breakdown of the coating system causing corrosion underneath, tests has to be made to find the weak spots and action can be taken before problems occur over time. For these kind of tests High Voltage Holiday Detectors provide an accurate way for locating faults in non-conductive coatings and linings and detection of pinholes, flaws, inclusions, thin spots and bubbles in a coating.

  • Inspection Kits

    Inspection Kits

  • PowderTAG measures powder coating thickness before and after cure, non-contact and non-destructive.A sophisticated combination of specific powder-, infrared- and photo-thermal techniques measures the thickness of powder coatings in pre-cured and cured status, precise and reproducible.

  • The TQC Cross Cut Adhesion Test KIT CC1000 is used to test the adhesion of dry coats of paint on their substrate by means of a series of cuts through the coating. Two series of parallel cuts cross angled to each other to obtain a pattern of 25 or 100 similar squares. The ruled area is evaluated by using a table chart after a short treatment with a stiff...

  • The TQC CC2000 Cross Cut Adhesion Test KIT is used to test the adhesion of dry coats of paint on their substrate by means of a series of cuts through the coating. Two series of parallel cuts cross angled to each other to obtain a pattern of 25 or 100 similar squares. The ruled area is evaluated by using a table chart after a short treatment with a stiff...

  • The TQC Cross Cut Adhesion Test KIT CC3000 is used to test the adhesion of dry coats of paint on their substrate by means of a series of cuts through the coating. Two series of parallel cuts cross angled to each other to obtain a pattern of 25 or 100 similar squares. The ruled area is evaluated by using a table chart after a short treatment with a stiff...

  • Simple, easy to use, small and portable gauges CM-8825 and CM-8826 for measurement of coatings on all metal surfaces. Instruments CM-8825 and CM-8826 are suitable for measurements on either Ferrous substrates (F), Non-Ferrous (NF), or on both Ferrous and Non-Ferrous substrates (FNF). In selecting the most appropriate gauge for your application, you need...

  • Ultrasonic thickness gauge specifically designed to measure the thickness of metallic and non-metallic materials e.g. aluminium, titanium, plastics, ceramics, glass and plastics. It can also be used to monitor all types of pipes and pressure vessels for loss of thickness due to corrosion or erosion.

  • The PosiTector UTG instruments are handy Ultrasonic Thickness Gauges as Standard or Advanced Models. Both available with a selection of 2 probe styles, UTG C – Corrosion Probe for measuring the effects of corrosion and erosion on tanks, pipes or other structures which only can be accessed on one side or UTG M – Multiple-Echo Probe to measure,...

  • To fulfill the demand of many companies in the line of paint and their customers we composed the “Basic Inspection Kit”. In the field the need had arisen of one standard measuring set to perform all measurements and tests regarding painting. The kit is created to be used by executives of painting companies, such as foremen and divisional heads. The...

  • The TQC Bresle Kit - Chloride Test Kit complies with the ISO 8502-6 and ISO 8502-9 standards that describe the Bresle Method to assess the level of soluble salts using a Bresle patch or Bresle sampler, distilled water and a conductivity gauge. The conductivity is mainly directly proportional to the concentration of dissolved chloride ions in the solution. 

  • The TQC Pretreatment Test Kit is especially composed to control all relevant parameters during the pretreatment of steel prior to painting. The PTK is available as BASIC KIT and FULL KIT.The strong double walled suitcase holds a smart selection of inspection tools and measuring devices to assist the paint inspector on a survey to inspect blast cleaned...

  • The TQC Ideal Finish Analysis Software is the most advanced coating climate, coating cure and coating thickness monitoring software package available today. With two user levels Ideal Finish Analysis offers user friendly reporting functions for standard production work as well as advanced calculations for in depth analysis of the climate parameters prior...

  • The TQC Coating Thickness Gauge Positector 6000 from Defelsko is a rugged, fully electronic coating thickness gauge that uses magnetic and eddy current principles to measure, accurately and quickly, coating thickness on both ferrous and non-ferrous metals.

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