Coating stripping detection method of coating plate
A detection method and coating technology, which can be used in measuring devices, instruments, and mechanical devices, etc., can solve the problems of inability to accurately simulate the coating plate and state simulation without coating peeling.
Inactive Publication Date: 2014-08-13
SHOUGANG CORPORATION
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Problems solved by technology
At present, the detection methods for checking the peeling of the coated plate mainly include the bending method and the double cup method, but these methods cannot accurately simulate the flow of the material and how the coating peels off when the plated plate is in use. The state of plating peeling is simulated
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[0010] The present invention will be further described in detail below in conjunction with specific embodiments, and the given examples are only for clarifying the present invention, not for limiting the scope of the present invention.
[0011] Process the coated plate to be measured into a circular sheet sample with a diameter of 100mm, and the thickness is based on the thickness of the thin plate. Clean the surface of the sample with anhydrous acetone and dry it. Before the test, check and clean the working surface of the mold, and lubricate the mold and the sample with drawing oil to meet the requirements of the test. Carry out the pre-test to determine the blank-holding force of 10KN. After the sample is clamped and placed with the blank-holder ring and the die, the punch is controlled to apply the set load to the sample, and the sample is subjected to a deep-drawing test at a speed of 1mm / s. Stop the test when the drawing depth is 25 mm, remove the blank holder force and ...
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Abstract
The invention discloses a coating stripping detection method of a coating plate and belongs to the technical field of coating detection of coating plates. The method comprises the following process steps: shearing the coating plate to obtain a disc sample, checking and cleaning molds and a test device, performing a trial test to determine a reasonable blank holder force, pressing the disc sample between a concave mold and a blank holder, starting a convex mold to perform deep drawing for shaping after the blank holder force is applied, stripping a coating under the action of a shear force through the drawing deformation of the sample and the action of friction between the sample and the mold, and evaluating the coating stripping degree of the coating plate. The method has the advantages that the coating stripping degree of automobile plates, home appliance plates, building slabs and other coating plates can be rapidly and accurately detected, and the method is suitable for industrial wide application.
Description
technical field [0001] The invention belongs to the technical field of coating detection of coated plates, and in particular provides a method for detecting peeling of the coating of coated plates, which is suitable for detecting the peeling of coatings of coated plates such as hot-dip pure galvanized plates and alloyed hot-dip galvanized plates, and can quickly detect automobiles. Whether there will be defects such as plating peeling during deformation of various coated plates such as boards, home appliance boards, and construction boards. Background technique [0002] Coating peeling refers to the phenomenon that the coating layer falls off in flakes or powder under the action of friction generated between the stamping die and the workpiece during the stamping forming process. The peeling of the coating not only affects the appearance quality of the formed parts, but also because the peeled zinc powder adheres to the mold and accumulates in the mold, it will aggravate the ...
Claims
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IPC IPC(8): G01N19/04
Inventor 李晓刚滕华湘刘李斌章军朱国森李本海刘立现赵宁郑天然陈庆徐晓宁郑学斌
Owner SHOUGANG CORPORATION