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Method for inspecting phosphating perfromance of cold-rolled plate
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An inspection method and technology for cold-rolled sheets, applied in the field of inspection, can solve the problems of poor applicability, long inspection time, and high inspection cost, so as to shorten the inspection time, improve the occurrence of phosphating quality problems, and improve the phosphating quality problems. preventative effect
Active Publication Date: 2010-03-31
ANGANG STEEL CO LTD
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[0005] The object of the present invention is to provide a kind of inspection method of the phosphatability of cold-rolled sheet, by measuring the profile arithmetic mean deviation Ra of cold-rolled sheet and the peak count Rpc value to check the phosphatability of cold-rolled sheet, solve existing problem The inspection method has a long inspection time, high inspection cost, and limited applicability, and it has a good predictability for the phosphating property of cold-rolled sheets
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Embodiment 1
[0015] Below, the present invention will be further described by taking the phosphating test of 5 kinds of cold-rolled sheets for household appliances as an example.
[0016] Step 1. Take five types of cold-rolled sheet samples for household appliances, a, b, c, d, and e.
[0017] Step 2. Immerse the above sample in a beaker filled with ethanol, and clean it in an ultrasonic cleaner for 5 minutes.
[0018] Step 3. Measure the arithmetic mean deviation Ra and peak count Rpc of the cleaned sample.
[0019] Step 4. According to the Ra and Rpc values measured in Step 3, the phosphating property of the cold-rolled sheet for household appliances is tested according to Table 1, and the test results are shown in Table 2. Table 1 is the test table for the phosphating property of cold-rolled sheets for home appliances, and Table 2 is the test results for the phosphating properties of five kinds of cold-rolled sheets for home appliances, a, b, c, d, and e.
[0020] Table 1 Phosphatin...
Embodiment 2
[0026] Take the phosphatability test of 5 kinds of cold-rolled sheets for automobiles as an example below to further illustrate the present invention.
[0027] Step 1. Take five types of cold-rolled sheet samples for automobiles, a, b, c, d, and e.
[0028] Step 2. Immerse the above sample in a beaker filled with ethanol, and clean it in an ultrasonic cleaner for 5 minutes.
[0029] Step 3. Measure the arithmetic mean deviation Ra and peak count Rpc of the cleaned sample.
[0030] Step 4. According to the Ra and Rpc values measured in step 3, according to Table 3, the phosphatability of the cold-rolled sheet for automobiles is tested, and the test results are shown in Table 4. Table 3 is the test table for the phosphating property of cold-rolled sheets for automobiles, and Table 4 is the test results for the phosphating properties of five kinds of cold-rolled sheets for automobiles a, b, c, d, and e.
[0031] Table 3 Phosphating test table of cold-rolled sheet for automobi...
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Abstract
The invention discloses a method for inspecting phosphating perfromance of the cold-rolled plate, mainly comprising four steps of: sampling, cleaning, detecting and analytically judging. The method is characterized in that the contour arithmetic average deviation Ra and peak countings Rpc value of the sample board are measured after the sample board is cleaned, and the phosphating perfromance of the measured sample board is judged based on the measured Ra and Rpc values. The method of the invention has advantages of easy operation, fast inspection speed and low inspection cost, resolves the problems of long time of inspection, high inspection cost and narrow serviceability, and has better pre-judgement to the phosphating perfromance of the cold-rolled plate.
Description
technical field [0001] The invention relates to an inspection method, in particular to an inspection method for the phosphating property of cold-rolled sheets. Background technique [0002] Cold-rolled sheet is one of the high-end cold-rolled products. In order to ensure that the cold-rolled sheet has excellent decorative performance, processing performance and corrosion resistance, the cold-rolled sheet must be phosphating before processing and forming. In order to prevent the occurrence of poor phosphating quality of cold-rolled sheets, it is necessary to test the phosphating properties of the cold-rolled sheets before formal phosphating. The phosphating quality of cold-rolled sheet is closely related to the chemical composition, rolling and annealing process and surface morphology of cold-rolled sheet. The chemical composition, rolling and annealing process of the rolled plate have less and less influence on the phosphating quality, while the surface morphology has a ser...
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