ISO and PSPC, the term used is. “nominal dry film thickness.” • For consistency in comparisons of area in this article, square meters are used to describe. STANDARD. ISO. Second edition. Reference number. ISO (E). This is a free 5 page sample. Access the full version online. ISO Paints and varnishes – Corrosion protection of steel structures by protective paint systems – Measurement of, and acceptance.
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To minimize measurement errors on a blast-cleaned surface, it is recommended that at least one fred the freee used for adjustment be thinner than the ilm to be measured. Help Center Find new research papers in: Various forms of the instrument are available, including a simple pencil type, a spring balance type and another type to which tension is applied by turning a calibrated circular dial until the magnet and attached spring detach from the coated surface.
PowerPoint Presentation – Joan Miro. They measure the force required to overcome the magnetic attraction between a magnet and a magnetic substrate.
ISO – Free Download PDF
Blasting Blast clearing 91840 be executed in specially equipped chamber. Science Chemistry Materials Science Acceptance criteria: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings.
Connecting data records on quality 1. Pre-coated test plates 5. Repair of defects 3.
Appendix Coating system no. Packing should be in a good condition. ISO and coating system data sheet.
For the measurement, a sampling plan is laid down as well as an appropriate correction value. Development of speciications for new work and maintenance 3 Terms and deinitions For the purposes of frwe document, the following terms and deinitions apply.
Each dificult area, e. Technical data sheets; Safety data sheets; Coating system no.
One test on one batch should be done. ISOPaints and varnishes — Determination of ilm thickness ISOPreparation of steel substrates before application of paints and related products — Surface roughness characteristics of blast-cleaned steel substrates — Part 1: Individual reading Correction value used Resulting individual Individual dry-film 1980 Table 2 of dry-film thickness thicknesses outside of ISO The mean value of the four readings taken should be determined and represents the dry-ilm thickness at the particular spot.
Acceptance criteria according paint coating specification PDC table 6. NOTE 1 The correction value is applied once to every reading, no matter if the coating consists of a single layer or multiple layers see illustration in Figure 1.
C3 Date of measurement: Rotary Wheel Heat Exchangers. Adjust the scale reading to the value of the shim.
Acceptance criteria: ISO and coating system
Schedule of clearing works shall be made in such a way to make possible to start painting as soon as possible while surface has not become soiled again.
Then place the thicker shim on the unpainted surface and repeat the procedure. Inspections should be done 2 times per shift every 4 hour Acceptance criteria: If discrepancies occur, the instrument adjustment should be repeated. In this case, the arithmetic mean value of the four readings is used in place of an individual reading.
Instruments using the eddy current principle can be used but their use is normally on non-ferrous metal surfaces. Calibration is carried out by the gauge manufacturer using traceable thickness standards in most cases. During inspection with the naked eye any dust, fat and dirt, the dried-on rolling scale, rust, old paint or foreign materials might not be observed; the surface has a uniform color shade with slightly marked spots.
Introduction, paragraph 3; Clause 1, paragraph 2; 6. The thickness of the dry ilm above the peaks of the proile is deined as the instrument reading minus an appropriate correction value.
Measurements taken on a coating on a roughened steel substrate will therefore be higher than the actual value above the peaks of the proile. This new measurement will then be the individual dry-ilm thickness.
Design considerations ISOPaints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 4: If the number of readings is not speciied in the contract or speciication, ive individual readings see 3. These instruments are mainly used to measure the thickness of coatings on non-magnetic i. Degree of the surface preparatory treatment of products should correspond to requirements of specification Sa3 — blast cleaning to pure metall.
Acceptance criteria: ISO 19840 and coating system
Coating procedure tests and acceptance criteria: NOTE As a rule, the effect of substrate thickness is 198400 in substrates up to a thickness of approximately 1 mm.
This International Standard also speciies criteria which are used with regard to acceptance or non-acceptance of ilm thickness values. Norsok standard M, Edition 6, Surface preparation and protective coating Page 6 of 9 7.
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