Compensation method for measured thickness of zinc aluminized layer

A technology of measuring thickness and compensation method, which is applied in the direction of measuring devices, instruments, and using wave/particle radiation, etc., can solve the problems of no thickness compensation function of galvanized layer and measurement value error, so as to improve thickness control accuracy and reduce measurement Effect of Thickness Deviation
CN105486252AInactive Publication Date: 2016-04-13ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANGANG STEEL CO LTD
Publication Date
2016-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A compensation method for measured thickness of a zinc aluminized layer includes the following steps of: firstly determining a compensation coefficient, obtaining the compensation coefficient through formula transformation and condition setting according to the thickness gauge measured thickness and the actual thickness of a zinc aluminized sheet; secondly determining a compensation coefficient value according to a measured specific value of [mu]u2 / [mu]u1 of a pure aluminium zinc sample sheet and a found specific value of [mu]u3 / [mu]u1; and finally modifying a first-level computer zinc aluminized layer measured thickness compensation program, and multiplying a d2 of an original zinc aluminized layer measured thickness compensation program by the compensation coefficient value to achieve automatic compensation of the measured thickness of the zinc aluminized layer, wherein the measured thickness is more close to the actual thickness. The method can effectively decrease a thickness gauge measured thickness deviation, and greatly improve the thickness control accuracy of the zinc aluminized sheet, so that the quality pass rate of the zinc aluminized sheet can be increased to 99.6% from 76.4%.
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Description

technical field

[0001] The invention belongs to the technical field of cold-rolled coating, in particular to a compensation method for measuring the thickness of a cold-rolled galvanized layer. Background technique

[0002] In the process of producing galvanized sheets on the cold-rolled galvanizing line, it is often found that the measured value of the thickness gauge of the exported finished product is inaccurate, and the deviation from the actual thickness is more than 20 μm, which leads to the closure of bulk products and the high pass rate of galvanized sheet thickness decrease, resulting in huge economic losses.

[0003] After analysis, the thickness gauge at the exit of the galvanizing line is a thickness gauge with a single material. Because the material of the coating is different from that of the substrate, the absorption capacity of rays is different, which requires correction of the thickness of the coating. The original thickness gauge can only correct the galv...

Claims

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