CN-122016639-A - Multifunctional galvanized layer adhesive force testing device and method

CN122016639ACN 122016639 ACN122016639 ACN 122016639ACN-122016639-A

Abstract

The invention relates to a multifunctional galvanized layer adhesive force testing device and method, wherein the device comprises a testing platform, a power system, a detection system and a control system, wherein the testing platform comprises a working platform and a clamping mechanism capable of fixing a sample in an adjustable mode, the power system comprises a servo motor, the servo motor is connected with a longitudinal stretching rod, the servo motor can drive the longitudinal stretching rod to lift and can drive the longitudinal stretching rod to move in the horizontal direction, the replacement type testing head assembly comprises an adhesive tape testing head for qualitatively analyzing the adhesive force of a galvanized layer and a stretching testing head for quantitatively analyzing the adhesive force of the galvanized layer, the longitudinal stretching rod is detachably connected with the adhesive tape testing head or the stretching testing head, and the detection system comprises a pressure sensor, a displacement sensor and a temperature sensor. The invention realizes high-efficiency and accurate test of the adhesion of the galvanized layer and solves the technical problems of narrow application scene, poor data reliability and high operation strength of the traditional device.

Inventors

JI CHANGGUO
YU CHAO
GAO JINGYI
SONG ZIBO
LI MENGYU
LIN LIN
HAN ZHEWEN
WANG JIANGUO
WANG ZHICHUN
ZHANG PENGKUN
Xue Shaoxin

Assignees

国网冀北电力有限公司电力科学研究院
国家电网有限公司
国网冀北电力有限公司

Dates

Publication Date: 20260512
Application Date: 20260204

Claims (10)

1. The utility model provides a multi-functional galvanized coating adhesive force testing arrangement which characterized in that includes: the test platform comprises a working platform for supporting a sample with a galvanized layer and a clamping mechanism for adjustably fixing the sample; the power system comprises a servo motor, wherein the servo motor is connected with a longitudinal stretching rod, and can drive the longitudinal stretching rod to lift and drive the longitudinal stretching rod to move along the horizontal direction; The replaceable test head assembly comprises an adhesive tape test head for qualitatively analyzing the adhesive force of the galvanized layer and a tensile test head for quantitatively analyzing the adhesive force of the galvanized layer, wherein the longitudinal tensile rod is detachably connected with the adhesive tape test head or the tensile test head; The detection system comprises a pressure sensor for monitoring the tension change of the longitudinal stretching rod in real time, a displacement sensor for monitoring the displacement change of the longitudinal stretching rod in real time and a temperature sensor for detecting the real-time temperature of the stretching method test head; and the power system, the replacement type test head assembly and the detection system are electrically connected with the control system.
2. The multifunctional galvanized layer adhesion testing apparatus of claim 1, wherein the tape-method test head comprises a tape, a bearing, and a test head holder detachably connected to the longitudinal stretching rod, the tape having a gradient viscosity and being provided in a roll shape, the tape being rotatably connected to the test head holder through the bearing.
3. The multifunctional galvanized layer adhesion testing device according to claim 2, wherein a threaded section is arranged in the middle of the longitudinal stretching rod, a threaded connection hole is formed in the testing head support, the testing head support is sleeved and connected with the threaded section through the threaded connection hole, and a locknut is arranged above the threaded section on the testing head support.
4. The multifunctional galvanized layer adhesion testing device according to claim 1, wherein the tensile testing head is detachably connected to the bottom of the longitudinal stretching rod, a resistance wire and the temperature sensor are arranged in the tensile testing head, an internal thread groove is formed in the bottom of the longitudinal stretching rod, a thread protruding column is arranged on the tensile testing head, and the thread protruding column is detachably connected in the internal thread groove.
5. The device for testing the adhesion force of the multifunctional galvanized layer according to claim 1, wherein a platform connecting threaded hole is formed in the working platform, the working platform is supported on a base, the base comprises a threaded columnar rod, an anti-slip bottom is arranged at the bottom of the columnar rod, the columnar rod is connected to the platform connecting threaded hole in a penetrating mode, a fine tuning knob is arranged at a position, below the working platform, of the columnar rod, and the fine tuning knob is used for rotationally adjusting the levelness of the working platform so that the galvanized layer of a sample is in a horizontal state.
6. The multifunctional galvanized layer adhesion testing device according to claim 5, wherein at least two stand columns are arranged on the working platform, a cross beam is arranged between the two stand columns, a chain is arranged on the cross beam, the servo motor is connected with the chain, the longitudinal stretching rod is connected to the chain, and the servo motor drives the chain to drive the longitudinal stretching rod to horizontally move.
7. The multifunctional galvanized layer adhesion testing device of claim 1, wherein the clamping mechanism comprises a clamping bracket and a fixing bolt, the clamping bracket is arranged on the working platform, the fixing bolt is adjustably connected to the clamping bracket, and one end of the fixing bolt can prop against a compression sample.
8. A multifunctional galvanized layer adhesion test method is characterized by being implemented by adopting the multifunctional galvanized layer adhesion test device according to any one of claims 1 to 7, and comprises the steps of horizontally placing and fixing a sample with a galvanized layer on a working platform, connecting a tape test head on a longitudinal stretching rod for qualitative analysis of the galvanized layer adhesion, or connecting a tensile test head on the longitudinal stretching rod for quantitative analysis of the galvanized layer adhesion.
9. The method for testing the adhesion of a multifunctional galvanized layer according to claim 8, characterized in that the qualitative analysis of the adhesion of the galvanized layer is performed by: the surface of the sample with the galvanized layer is pretreated, and the pretreated sample is placed on a working platform and fixed by a clamping mechanism; The tape test head is connected to the longitudinal stretching rod, and the downward pressure, the moving speed and the moving distance of the tape are set through the control system; Starting a test, wherein a servo motor drives a longitudinal stretching rod to descend, an adhesive tape of an adhesive tape method test head descends synchronously, the bottom of the adhesive tape contacts the surface of a galvanized layer of a sample, the longitudinal stretching rod stops pressing down after reaching preset pressure, the adhesive tape is bonded with the galvanized layer, after the pressure is kept for a set time, the servo motor drives a chain to move at a preset speed, the longitudinal stretching rod drives the adhesive tape to move and spread out of a test area covering the sample, and after a set distance is moved, the servo motor stops; and taking down the test sample, observing the state of the galvanized layer after the adhesive tapes with different viscosities are adhered in the test area, and carrying out qualitative judgment on the adhesive force grade.
10. The method for testing the adhesion of a multifunctional galvanized layer according to claim 8, characterized in that the quantitative analysis of the adhesion of the galvanized layer is performed by comprising the following steps: the surface of the sample with the galvanized layer is pretreated, the pretreated sample is placed on a working platform and is fixed by a clamping mechanism, and the testing area of the galvanized layer is coated with an adhesive; connecting a tensile testing head to the longitudinal stretching rod; setting test parameters including curing temperature, curing time and tensile force moving speed through a control system; starting a servo motor, and driving a longitudinal stretching rod to descend so that the stretching method test head contacts with the adhesive; Starting a test, heating and preserving heat for a set time by a resistance wire in a testing head by a stretching method, after the adhesive is solidified, driving a longitudinal stretching rod to move upwards by a servo motor until a galvanized layer is separated from a steel plate substrate of a sample, and recording stretching stress and displacement; And calculating the adhesive force, and finishing the quantitative analysis of the adhesive force of the galvanized layer.

Description

Multifunctional galvanized layer adhesive force testing device and method Technical Field The invention relates to the technical field of material surface treatment detection, in particular to a multifunctional galvanized layer adhesive force testing device and method. Background The galvanized layer is used as a common metal surface protective coating, and is widely applied to a plurality of fields such as mechanical manufacturing, constructional engineering, transportation, electric facilities and the like by virtue of excellent corrosion resistance, good ductility and relatively low cost. The adhesion between the zinc coating and the base metal is a key performance indicator that determines the service life and the safety of the zinc coated product. If the adhesion is insufficient, the galvanized layer is easy to fall off, peel and the like, which directly leads to the exposure of the base metal in the external corrosion environment, greatly shortens the service cycle of the product, and even causes serious potential safety hazards such as equipment failure, structural damage and the like. Therefore, the method for accurately and efficiently testing the adhesion of the galvanized layer is an important link for guaranteeing the quality of galvanized products and promoting the high-quality development of related industries. At present, the testing methods for the adhesion force of the galvanized layer in the industry mainly comprise an adhesive tape method, a scribing method, a stretching method, a bending test method and the like. The adhesive tape method is used as a basic qualitative test method, is relatively simple and convenient to operate, can only roughly judge by observing the residual condition of a galvanized layer after the adhesive tape is stripped, cannot obtain a specific adhesive force value, is easily influenced by artificial factors such as an operator method, adhesive tape adhesion strength and the like, has low precision, and can reflect the adhesive force level of a coating to a certain extent by a cross-cut method, but also belongs to qualitative or semi-quantitative tests, has specific requirements on the thickness of the coating, and has limitation on the application range. The stretching method is one of the main methods for realizing quantitative test, and can calculate the adhesion value by measuring the pulling force required when the coating is peeled off, so that the test precision is relatively high. However, the existing tensile testing device has the problem of single function generally, that is, most devices can only complete single-form tensile testing, and the qualitative testing requirement cannot be met, if qualitative and quantitative testing are required to be carried out simultaneously, different equipment is required to be replaced, the operation is complicated, and the testing efficiency is low. In addition, the structural design of part of the tensile testing device has the defects that on one hand, a working platform lacks a convenient horizontal adjusting mechanism, perpendicularity between a sample and a tensile direction in a testing process is difficult to ensure, deviation of testing data is easy to occur, on the other hand, a contact head of the existing device is mostly of a fixed structure and cannot be flexibly replaced according to testing requirements, and a part of components (such as viscous media) for auxiliary testing lack of gradient design, so that the device is difficult to adapt to testing requirements of galvanized layers with different adhesive force grades. Therefore, the galvanized layer adhesive force testing device which has qualitative and quantitative testing functions, is high in testing precision, convenient to operate, adaptable to various testing scenes and high in intelligent degree is developed, and has important practical significance and industrial value. Therefore, the inventor provides a multifunctional galvanized layer adhesion testing device and method by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art. Disclosure of Invention The invention aims to provide a multifunctional galvanized layer adhesive force testing device and method, which can be used for realizing efficient and accurate testing of the galvanized layer adhesive force and solving the technical problems of narrow application scene, poor data reliability and high operation strength of the conventional device. The invention aims to realize that a multifunctional galvanized layer adhesive force testing device comprises: the test platform comprises a working platform for supporting a sample with a galvanized layer and a clamping mechanism for adjustably fixing the sample; the power system comprises a servo motor, wherein the servo motor is connected with a longitudinal stretching rod, and can drive the longitudinal stretching rod to lift and drive the longitudinal stretching rod to move along the