Adhesion detection method for oxidation film on surface of hot rolling strip steel

A technology of hot-rolled strip steel and surface oxidation, applied in the direction of length measuring device, metal rolling, metal rolling, etc., can solve the problems of complex process, difficult accurate judgment, slow speed, etc. The method is convenient and fast, and the detection result is intuitive , the effect of easy operation

Inactive Publication Date: 2011-06-29
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is simply to estimate, inaccurate, large error
②. For the three components in the oxide film on the surface of the steel plate , and Sampling, analysis and comparison to make judgments, this method is more accurate, but the process is complicated, the speed is slow, and the thickness and structure of the oxide film on the detection points at different positions will also be different, making accurate judgments is also difficult

Method used

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  • Adhesion detection method for oxidation film on surface of hot rolling strip steel
  • Adhesion detection method for oxidation film on surface of hot rolling strip steel
  • Adhesion detection method for oxidation film on surface of hot rolling strip steel

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Embodiment Construction

[0014] Such as figure 1 and figure 2 Shown, the embodiment of the present invention is: 1.. cut test piece 1 from hot-rolled steel strip with wire cutting machine, size is L=250mm, b=70mm, and a is the test piece thickness; 2. test piece is with industrial alcohol 1. Scrub the surface clean until there is no dust and oil on the surface; ③. Stick scotch tape 2 on the test surface of test piece 1; ④. Put the test piece 1 with scotch tape 2 on top of the V-shaped mold 3 on the universal testing machine , the surface with scotch tape 2 is on the bottom, apply pressure with a V-shaped indenter with a V-shaped angle α=90°, and a rounded corner of the indenter R=a, and perform a cold bending test with a bending speed of 180mm / min; ⑤. After the experiment, remove the scotch tape from the test piece 1; ⑥. Take pictures of the scotch tape, and then use the software photoshop to convert the photos to obtain the quantitative spectrum of the powder falling condition; 7. Analyze the quant...

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Abstract

The invention relates to an adhesion detection method for an oxidation film on a surface of a hot rolling strip steel, belonging to the technical field of hot rolling strip steel surface quality; the method is characterized by comprising the following steps: (1) cutting from the hot rolling strip steel through wire-electrode cutting to be used as a test specimen for a cold bend test; (2) cleaning the surface of the test specimen with alcohol; (3) pasting a scotch tape on the test surface of the test specimen; (4) locating the test specimen on a test machine and carrying out the cold bend test by utilizing a V-shape pressing head of 90 degrees, wherein the bending speed is 10-200mm; (5) removing the scotch tape from the test specimen; (6) shooting the adhesive tape attached with oxidized iron sheet powder, and converting a picture through photoshop software to acquire the quantitative spectrum picture of the powder falling condition; and (7) carrying out area quantitative analysis on the quantitative spectrum picture to evaluate the quantitative value of the oxidation film and provide a reference for technique improvement.

Description

technical field [0001] The invention belongs to the technical field of surface quality of hot-rolled steel strips, and in particular relates to a method for detecting adhesion of an oxide film on the surface of hot-rolled steel strips. Background technique [0002] There is a layer of oxide film on the surface of hot-rolled steel strip. The adhesion between the oxide film and the substrate is determined by the adhesion of the oxide film. The oxide film is composed of three components, namely , and , their adhesion to the substrate is 0.4MPa, 10MPa and 40MPa respectively, it can be seen that The more, the greater the adhesion, and the oxide film on the surface of the hot-rolled strip products will often fall off during the subsequent processing and use. At this time, it will cause adverse effects on the subsequent coating production and personnel health. As a result, the oxide film with low adhesion falls off severely, and the oxide film with high adhesion falls less. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B38/00
Inventor 石发才侯瑞鹏王彩焕薛文广
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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