Peel off test steel plateIt is a specially treated metal substrate coated with a standard coating or adhesive layer on the surface, used to simulate the bonding interface in actual use. Through peel testing, the adhesion between the coating and the substrate can be quantified, and the durability, bonding quality, or material bonding performance of the coating can be evaluated. Its core uses include:

Coating quality inspection: Verify the bonding strength between coatings, anti-corrosion coatings, spray coatings, etc. and metal substrates.

Material research and development: Evaluate the performance of new coating materials or bonding processes when developing them.

Industrial production: Monitor the quality of coatings or adhesives on the production line to ensure that products meet standards.

Failure analysis: Analyze the causes of coating detachment and bonding failure, and optimize process parameters.

　　Peel off test steel plateTest steps and precautions:

Sample preparation:

Cut the steel plate to the specified size, ensuring that the edges are flat and free of burrs.

Perform surface treatment according to testing requirements (such as sandblasting, cleaning, and applying primer).

Apply the coating or adhesive layer to be tested, and control the coating thickness evenly (such as using a coating thickness gauge).

Fixture installation:

Fix the steel plate on the fixture under the testing machine, with the coating or adhesive layer facing upwards.

Fix the stripping head (such as tape, fixture) onto the coating surface, ensuring it is perpendicular to the substrate.

Test parameter settings:

Peel speed: usually 50mm/min-300mm/min (selected according to standards).

Data collection frequency: 10Hz-100Hz (to ensure peak force capture).

Test execution:

Start the testing machine and record the peel force displacement curve.

Observe the detachment morphology (such as cohesive failure, interface failure).

Result analysis:

Calculate the average peel force (N/mm or N/cm).

Evaluate the types of damage (coating cohesive damage, interface damage, substrate damage).

Notes:

Environmental control: Temperature and humidity may affect the test results and should be conducted in a standard environment.

Sample preservation: Coated samples should be protected from contamination or scratches, and should be treated with constant temperature and humidity before testing.

Fixture matching: Ensure that the peeling head is in full contact with the coating surface to avoid slipping.