Surface Profiles - Blasted Grit Shot

Surface Profiles – Blasted

The degree of profile on the surface affects a coating’s overall performance and determines aspects such as adhesion, coverage and overall volume of coatings used. If the profile is too large the amount of coating required increases, otherwise there is a danger that the peaks remain uncoated – allowing rust spots to occur. If the profile is too small there may be an insufficient key for adequate adhesion.

Surface Profiles – achieved through blasting also known as Blast profiles

The proper and effective preparation of a surface prior to coating is essential. Making sure that the correct roughness, or profile, has been generated is essential.

If the profile is too low, the adhesion of the coating to the surface will be reduced. Too high and there is the danger that the profile peaks will remain uncoated – allowing rust spots to occur. If the profile is too high the chances of the paint in the valleys curing correctly are also reduced.

Surface Profiles can be measured in 3 different ways:

Needle type gauges – where the foot of the gauge sits on the peak and the needle extends to the valley or wherever the point is placed. You would take a number of readings to get a correct average, usually 10 readings are required. Needle type gauges can be split into the Analogue Model (Elcometer 123) and the Digital Model (Elcometer 224).

Replica tape – an option where you would rub the tape against the surface and get an image of the surface which you would then measure with the Elcometer 124 Thickness Gauge

Surface Comparator – measuring profile but it is very subjective and not repeatable and reproducible.

Surface Profiles - Blasted Elcometer 122 Testex Replica Tape

Surface Profiles - Blasted Elcometer 124 Dial Thickness Gauge

Surface Profiles - Blasted Elcometer 125 Surface Comparators

19 May 2021

Elcometer 127 Keane-Tator Surface Comparators & Magnifier

by Melissa Mitchell | posted in: Surface Preparation, Surface Profiles - Blasted | 0

The Elcometer 127 Surface Comparators are available in sand, shot or grit surface profiles. Each surface comparator is supplied with 5 profile grades ranging from 0.5 – 5.5mils. Designed for use with the Elcometer 127 illuminated magnifier, each surface comparator has a hole in the centre allowing for clear visual comparisons to be made. 5 Roughness Values per Comparator The Elcometer 127 Surface Comparators can be used in accordance with: • AS 3894.5 • ASTM D 4417-A • SSPC … Read More

18 May 2021

Elcometer 102 Needle Pressure Gauge

by Graham Duk | posted in: Products, Surface Profiles - Blasted | 0

Elcometer 102 Needle Pressure Gauge is designed to measure air pressure in blast and air hoses. Pressure drop is responsible for decreased production rates, increased abrasive consumption and reduced anchor profile in abrasive blasting systems. Elcometer 102 Needle Pressure Gauge – Specifications Part Number Description E102-A Elcometer 102 Needle Pressure Gauge T10229425 Replacement Needle (Pack of 2) Measuring Range 0 – 300psi (0 – 20bar) Pressure Limitations Steady: 3/4 x full scale value Fluctuating: 2/3 x full scale … Read More

8 Apr 2015

Elcometer 119 Pipe Pit Gauge

by Graham Duk | posted in: Products, Surface Preparation, Surface Profiles - Blasted | 0

The Elcometer 119 Pipe Pit Gauge is a small pocket-sized gauge designed to identify the condition of a pipe. The gauge is placed horizontally on the surface of the pipe and the stylus is positioned into the base of the corrosion pit. The gauge shows the pit depth compared with the actual pipe wall thickness It is essential importance to pipe coaters, enabling them to make a quick assessment of the condition of pipework. Imperial units only. Elcometer 119 Pipe … Read More

8 Apr 2015

Elcometer 125 Surface Comparators

by Graham Duk | posted in: Products, Surface Preparation, Surface Profiles - Blasted | 0

Elcometer 125 Surface Comparators These extremely durable surface comparators allow the estimation of surface profile of either grit or shot blasted surfaces. Using the Elcometer 125 Surface Comparators as a reference the blasted profile can be compared to the four reference profile grades in each comparator. Profiles are recorded in microns. 4 Profile Values per Comparator. Features the Elcometer 125 Surface Comparators • Available in both Grit and Shot • The ISO 8503 Parts 1 and 2 standard specifies the … Read More

8 Apr 2015

Elcometer 124 Dial Thickness Gauge

by Graham Duk | posted in: Coating Inspection, Products, Surface Preparation, Surface Profiles - Blasted | 0

The proper and effective preparation of a surface prior to coating is essential. Making sure that the correct roughness – or profile – has been generated is essential. If the profile is too low, the adhesion of the coating to the surface will be reduced. Too high and there is the danger that the profile peaks will remain uncoated – allowing rust spots to occur. The Elcometer 124 Thickness Gauge is used to measure the peak-to-valley height of a surface … Read More

8 Apr 2015

Elcometer 122 Testex Replica Tape

by Graham Duk | posted in: Coating Inspection, Products, Surface Preparation, Surface Profiles - Blasted | 0

The proper and effective preparation of a surface prior to coating is essential. Making sure that the correct roughness – or profile – has been generated is essential. If the profile is too low, the adhesion of the coating to the surface will be reduced. Too high and there is the danger that the profile peaks will remain uncoated – allowing rust spots to occur. The Elcometer 122 Testex® Replica Tape is designed to provide a permanent mould of the … Read More

8 Apr 2015

Elcometer 224 Digital Surface Profile Gauge

by Graham Duk | posted in: Coating Inspection, Products, Surface Preparation, Surface Profiles - Blasted | 0

The Elcometer 224 Surface Profile Gauge provides the very latest in surface profile measuring technology for measuring profile on either flat or curved surfaces. Fast, accurate and very user friendly, the Elcometer 224 is available with or without memory and Bluetooth®. The Elcometer 224 meter is available in two different models: Model B and Model T. Each surface profile gauge provides the user with increasing functionality from the entry level Elcometer 224 Model B, to the top of the range Elcometer 224 Model … Read More

8 Apr 2015

Elcometer 123 Surface Profile Gauge

by Graham Duk | posted in: Coating Inspection, Products, Surface Preparation, Surface Profiles - Blasted | 0

Surface Profile Gauges are used to measure the profile height of a surface. The degree of the surface profile on the surface affects a coating’s overall performance and determines aspects such as adhesion, coverage and overall volume of coatings used. If the surface profile is too large the amount of coating required increases, otherwise there is a danger that the peaks remain uncoated – allowing rust spots to occur. If the surface profile is too small there may be insufficient … Read More