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CN-121994602-A - Coating adhesive force detection device and detection method

CN121994602ACN 121994602 ACN121994602 ACN 121994602ACN-121994602-A

Abstract

The invention relates to the technical field of coating detection, in particular to a coating adhesive force detection device which comprises a workbench, wherein a hydraulic host is arranged on the workbench, a sleeve is connected under the hydraulic host in a screwed mode, the lower end of the sleeve is fixedly connected with a test column, a pressing component is connected between the sleeve and the test column, the test column is a square cylinder, the bottom of the test column is fixedly connected with an elastic sheet, the elastic sheet is wrapped at the bottom of the test column, a plurality of small steel balls are placed in the test column, and the pressing component is positioned above the small steel balls. The invention solves the problem that the coating adhesive force detection only detects a plane coating in the prior art by arranging the test column and the pressing component, realizes the function that the detector can detect the coating adhesive force of a plane and also can detect the cambered surface, and improves the perfection of the coating adhesive force detection.

Inventors

  • LI XIAOWEI
  • DUAN YONGFENG
  • Fan Zhishuai
  • WANG NING
  • ZHANG MENG
  • SHI YUNFENG

Assignees

  • 中国石油化工股份有限公司
  • 中石化炼化工程（集团）股份有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (10)

  1. 1. The coating adhesive force detection device comprises a workbench (100) and is characterized in that a hydraulic host machine (200) is installed on the workbench (100), a sleeve (300) is connected under the hydraulic host machine (200) in a screwed mode, a test column (400) is fixedly connected to the lower end of the sleeve (300), and a pressing assembly (500) is connected between the sleeve (300) and the test column (400); The test column (400) is a square cylinder, an elastic sheet (410) is fixedly connected to the bottom of the test column (400), the elastic sheet (410) is wrapped at the bottom of the test column (400), a plurality of small steel balls (600) are placed in the test column (400), and the pressing assembly (500) is located above the small steel balls (600).
  2. 2. The coating adhesive force detection device according to claim 1, wherein the pressing assembly (500) comprises a pressing plate (510), the outer peripheral side wall of the pressing plate (510) is in sealing fit with the inner peripheral side wall of the test column (400), a pressing shaft (520) is fixed at the center of the pressing plate (510), a pressing rod (530) is fixed at the top of the pressing shaft (520), the pressing rod (530) is located in the sleeve (300) and two ends of the pressing rod extend out of the sleeve (300), limiting sliding grooves (310) are symmetrically formed in the sleeve (300), and two ends of the pressing rod (530) slide up and down in the limiting sliding grooves (310).
  3. 3. The coating adhesive force detection device according to claim 1, wherein ear plates (320) are symmetrically arranged on the outer side wall of the sleeve (300), screws (330) are vertically screwed on the ear plates (320) through threaded holes, and the two screws (330) are located right above the pressing rod (530).
  4. 4. The coating adhesion detection device according to claim 2, wherein the lower end of the pressing shaft (520) is a hollow shaft body, the pressing plate (510) is provided with a through hole (511), the through hole (511) is coaxial with the pressing shaft (520), a hose (540) is arranged in the hollow shaft body of the pressing shaft (520), one end of the hose (540) is in sealing connection with the through hole (511), and the other end of the hose (540) penetrates out of the pressing shaft (520) to be connected with a micro air pump (550).
  5. 5. The coating adhesion detection device according to claim 1, wherein the hydraulic host (200) is electrically connected with a controller (700), and the hydraulic host (200) is further electrically connected with a data display screen.
  6. 6. The device for detecting adhesion of a coating according to claim 1, wherein the bottoms of the two long plates of the test column (400) extend out of the bottoms of the two short plates.
  7. 7. A coating adhesion detection method comprising using the coating adhesion detection device according to any one of claims 1 to 6, characterized by comprising the steps of: S1, preparing a sample to be detected, fixing the sample to be detected on a table top of a workbench (100), removing grease and dust on the surface of a coating of the sample to be detected, and slightly polishing the coating of the sample to be detected by adopting sand paper; S2, starting the hydraulic host machine (200), descending until the bottom of the test column (400) contacts with the surface of the sample, operating the pressing rod (530) or the hydraulic host machine (200) to move downwards, extruding the small steel balls (600), enabling the elastic sheet (410) to be completely attached to the surface of the coating to be tested, and then twisting the screw (330) to downwards press the pressing rod (530), and enabling the pressing plate (510) to be pressed above the small steel balls (600) to limit and fix the small steel balls (600); s3, pumping by using a micro pump (550) to keep a vacuum compression state between the elastic sheet (410) of the test column (400) and the pressing plate (510); S4, starting the hydraulic host machine (200) to move up the test column (400), smearing the adhesive on the surface of the coating to be tested, starting the hydraulic host machine (200) to move down the test column (400), enabling the test column (400) to be vertically adhered to the coating to be tested of the sample, and curing the adhesive; and S5, opening a data display screen, starting the hydraulic host (200) to move upwards, and drawing.
  8. 8. The method for detecting adhesion of a coating according to claim 7, wherein in S1, the test specimen includes a planar specimen and a cambered specimen, and the cambered specimen is divided into a cambered upward specimen and a cambered downward specimen.
  9. 9. The method for detecting the adhesive force of the coating according to claim 7, wherein in S2, after the hydraulic host machine (200) is started and the contact between the bottom of the test column (400) and the surface of the to-be-detected sample is stopped, when the to-be-detected sample is a plane or an arc-shaped downward cambered surface, the pushing rod (530) is required to be pressed, the small steel balls (600) are pressed downwards to enable the bottom surface of the elastic piece (410) to be completely attached to the surface of the to-be-detected coating, and when the to-be-detected sample is an arc-shaped upward plane, the hydraulic host machine (200) is required to be started to drive the test column (400) to continuously move downwards, and the small steel balls (600) and the pressing rod (530) are pushed upwards to enable the bottom surface of the elastic piece (410) to be completely attached to the surface of the to-be-detected coating.
  10. 10. The method for detecting adhesion of a coating according to claim 7, wherein in S4, the adhesive strength of the adhesive is 3MPa, 5MPa, 6MPa or 8MPa.

Description

Coating adhesive force detection device and detection method Technical Field The invention relates to the technical field of coating detection, in particular to a device and a method for detecting coating adhesive force. Background In recent years, along with the development of national high-quality requirements, refining enterprises continuously promote self-management level, and higher requirements on the quality and service life of anti-corrosion engineering are provided. In general, the service life of the coating is affected by various factors, but the adhesive force is certainly the most important index, if the adhesive force of the coating is insufficient, the problems of failure such as foaming, peeling and the like gradually occur along with the extension of the service life, and the long-service life requirement cannot be met. Therefore, the adhesion detection of the coating is used as an indispensable detection item for the quality inspection of the anti-corrosion engineering in the current standard specifications. At present, regarding a coating adhesive force detection method, the current standards mainly comprise GB/T5210-2006 "paint and varnish pulling-off method adhesive force test" and GB/T31586.2-2015 "evaluation of anti-corrosion protective coating adhesive force/cohesive force (breaking strength) of a protective coating system on a steel structure and acceptance criterion part 2, namely a cross-cut test and a cross-cut test, and the like, and the coating adhesive force detection can be carried out. Chinese patent CN116165137B discloses a bridge steel member does not have chromium zinc aluminum paint coating adhesive force auxiliary test device, which comprises a base, fixedly connected with main frame on the base, be provided with the test board on the same vertical face of main frame, be provided with on the main frame and draw the subassembly of buckling, be provided with auxiliary firm subassembly on the subassembly of buckling, draw the subassembly of buckling including the U-shaped movable rod, U-shaped movable rod vertical grafting is removed on the main frame, the inclined slot has been seted up to the symmetry on the U-shaped movable rod, through the setting of drawing the subassembly of buckling, can indirectly draw the action to the test board when drawing the montant expands outward, when drawing the montant does adduction action, can be under supporting the assistance of briquetting indirectly to the test board to buckle the action, this kind of action of expanding outward adduction can effectively draw and bend two kinds of actions to the test board, effectively compensatied the limitation of prior art test, the perfection to the material coating adhesive force detects has further been improved. The above-mentioned patent has realized drawing and bending two kinds of actions to the test board through drawing the setting of buckling subassembly, has improved the perfection that the coating adhesive force detected, but this kind of detection still is the detection that is the plane based on the template that awaits measuring, and the perfection that detects still needs further improvement. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a coating adhesive force detection device and a detection method, which solve the problem that the coating adhesive force detection only detects a planar coating in the prior art by arranging a test column and a pressing component, realize the function of detecting the coating adhesive force of a cambered surface on a plane by a detector and improve the perfection of the coating adhesive force detection. In order to achieve the above object, the present invention provides the following technical solutions: The invention claims protection of a coating adhesive force detection device, which comprises a workbench, wherein a hydraulic host is arranged on the workbench, a sleeve is connected under the hydraulic host in a screwed manner, the lower end of the sleeve is fixedly connected with a test column, and a pressing assembly is connected between the sleeve and the test column; The test column is a square cylinder, an elastic sheet is fixedly connected to the bottom of the test column, the elastic sheet is wrapped at the bottom of the test column, a plurality of small steel balls are placed in the test column, and the pressing assembly is located above the small steel balls. The pressing assembly comprises a pressing plate, wherein the outer peripheral side wall of the pressing plate is in sealing fit with the inner peripheral side wall of the test column, a pressing shaft is fixed at the center of the pressing plate, a pressing rod is fixed at the top of the pressing shaft, the pressing rod is located in a sleeve, two ends of the pressing rod extend out of the sleeve, limiting sliding grooves are symmetrically formed in the sleeve, and two ends of the pressing rod slide up and down in the limiting sli