What does Testex Tape measure?

What does Testex Tape measure?

Product Description. The Testex Replica Tape when used with the Replica Tape Gauge will measure the surface profile of blast-cleaned steel. The Replica Tape Gauge is used to measure the Testex Replica Tape replica and determine the average maximum peak-to-valley height of the blast profile.

How thick is Testex tape?

Features for Testex Tape The compressible film can vary in thickness between approximately 5 and 6 mils (127 and 152 microns) but this variation does not affect the accuracy of the measurement. The tape is rated to read profiles from 1.5 to 4.5 mils (40 to 115 microns).

What is Press O?

Press-O-Film consists of a layer of crushable plastic microfoam coated onto polyester film of highly uniform thickness. When compressed, by “burnishing” against a surface, the foam collapses to about 25% of its pre-collapse thickness.

What profile range can be measured using coarse Testex?

Testex Press-O-Film Tape Coarse is designed to be used for a range of 0.8 – 2.5 mils.

What is replica tape?

Replica tape consists of a layer of compressible foam affixed to an incompressible polyester substrate of highly uniform thickness (50 µm +2 µm). When pressed against a roughened steel surface, the foam forms an impression, or reverse replica, of the surface.

What is wet film thickness gauge?

A wet film thickness gauge is a tool that is designed to measure a liquid coating’s thickness in the easiest and fastest manner. It measures the thickness immediately after the coating has been applied on the material.

How do you manually measure a surface profile?

Placing the compressed tape between the anvils of a micrometric thickness gage and subtracting the contribution of the incompressible substrate, 2 mils, gives a measure of the surface profile.

How do I view surface profiles after blasting?

Replica tape for measuring blasted surface profiles. By placing the Tqc replica tape on the surface and rubbing over it, the Rt (total roughness) or peak-to-valley height of the profile can be taken and then measured with a film thickness meter.

What is replica tape used for?

Replica tape has been used to measure the roughness profile of abrasive blasted steel since the late 1960’s. Compared to other methods, it has the advantages of ruggedness, relatively low start-up cost, good repeatability and the option of retaining a physical replica of the surface being evaluated.

How do you check a blasting surface?

What is the difference between profile of a line and profile of a surface?

In other words, while profile of a line looks only at a specific cross section, profile of a surface looks at how measurements vary from one cross section to the next.

What does SA 2.5 mean?

Sa 2.5 is a cleanliness standard, not a surface roughness standard. An example of a surface roughness standard would be ISO 8503. One reason cleanliness is required is because paint will not adhere properly to a dirty surface.

Why grit blasting is done?

Abrasive grit blasting is widely used by a range of industries to clean or modify the surface properties of materials. Common applications include: Surface preparation ahead of coating or bonding operations. Removal of paint, rust, sand or scale from surfaces.