Method for measuring plate coating metal weight

A technology of weight and coating, which is applied in the direction of measuring devices, material weighing, and analyzing materials, etc., can solve the problems of troublesome preparation of samples by chemical dissolution weighing method, poor control of coating dissolution end point, etc., to reduce under-dissolution or over-dissolution The effect of error, easy operation and high precision
CN1425907AInactive Publication Date: 2003-06-25中华人民共和国辽宁出入境检验检疫局 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中华人民共和国辽宁出入境检验检疫局
Publication Date
2003-06-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The measuring process of plate coating metal weight includes clean sample, stoving, weighing, dissolving while the dissolving curve being displayed in computer until the curve exhibiting inflection point, taking out sample, washing, stoving, weighing to obtain the weight difference before and after dissolving, and calculating the weight unit area or coating thickenss. The said process is superior to traditional chemical dissolving process in that the Coulomb dissoving process makes it possible to obtain accurate dissolving end time. In case of composite coating or possessing middle alloy layer, the said process can the thickness of each layer.
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Description

technical field

[0001] The invention relates to a metal coating measurement technology, in particular to a method for measuring the weight of plate coating metal. Background technique

[0002] The operation steps of the chemical dissolution weighing method widely used at present are: firstly weigh the cleaned and dried sample, then dissolve the covering layer with a chemical solvent; then weigh the cleaned and dried sample; The difference between the weighing of the before and after samples was calculated to obtain the covering layer thickness.

[0003] The disadvantage of the chemical dissolution weighing method is that the dissolution end point of the coating is not easy to control, and it is usually determined whether the coating layer is dissolved or not based on the apparent characteristics such as whether bubbling continues or gas is generated. Therefore, the covering layer is easily dissolved insufficiently or excessively, and the measurement er...

Claims

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