Direct pressure pipe coating scratch resistance performance tester

Abstract

The invention is a direct-pressure pipeline coating scratch resistance tester suitable for testing the scratch resistance of pipeline anticorrosion layers. It includes mechanical and electronic parts; the main components of the mechanical part include four parts: test platform, scratch head, direct pressure counterweight loading mechanism, and transmission mechanism; the transmission mechanism is installed on one side of the test platform, and the direct pressure counterweight loading mechanism is installed on the test platform. On the top of the platform, the scratch head is installed on the top of the lower part of the iron rod of the counterweight loading mechanism; the electronic part includes a weight measurement module, a counterweight data acquisition module, an interface module, a power supply module, a scratch probe, a stepper motor controller and a stepper motor ; The output of the pressure sensor on the scratch probe is connected to the A / D converter, the output of the A / D converter is connected to the input of the controller, the output of the controller is connected to the input of the stepper motor controller, and the output of the stepper motor controller is connected to stepper motor. The invention is suitable for different pipe diameters, different wall thicknesses and different anticorrosion layer structures, and is convenient, durable and low in maintenance rate.

Description

technical field [0001] The invention is a direct-pressure pipeline coating scratch resistance tester suitable for testing the scratch resistance of pipeline anticorrosion layers. Involves general corrosion protection of metallic materials, testing not covered by other categories and technical fields of piping systems. Background technique [0002] Scratch resistance, as one of the important indicators to measure the performance of anti-corrosion coatings, is mainly used to compare the performance of mechanical damage resistance between different anti-corrosion coatings. In recent years, during the excavation and detection of in-service pipelines, many corrosion phenomena of the pipe body caused by the failure of the anti-corrosion layer were found. Rapid corrosion not only affects the quality and service life of the pipeline, but also leaves a huge safety hazard for production and operation management. The outer anti-corrosion layer of the pipeline is one of the most impor...

AI Technical Summary

Problems solved by technology

Domestic scratch resistance test methods mainly include QCNPC38-2002 "Technical Specifications for Buried Steel Pipeline Double-layer Fusion-bonded Epoxy Powder Coating", SY / T4113-2007 "Scratch Resistance Test Method for Anti-corrosion Coating", which The test method for the scratch resistance of the coating is specified in detail, but there is no description of the test equipment

[0005] CN202599778U discloses a pipeline coating scratch resistance performance tester, but the performance is not ideal enough

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