An xrf-based detection method for labeling of tiny parts

Abstract

The invention relates to a miniature parts label manufacturing and detection method based on XRF (X-ray Fluorescence). The method comprises the steps of manufacturing a specially designed element code label on the surface of a parts so as to realize an identification function on the parts, wherein the identification function is realized with the help of a component detection function of an XRF spectroscopy analysis technique, and the component detection function is used for identifying miniature parts made of various materials and carrying out tracking management of a full life cycle so as to realize identification within 1*1mm on the miniature parts; selecting element code formulation constituents, applying a normal-temperature air spraying method to manufacture an element code, carrying out multi-point XRF detection on the element code on the parts so as to acquire multi-point element content information, and applying a statistical method for calculating an element limit of the element code, so that the parts is only identified by element code information, and can be also associated with a two-dimensional code of the parts in a database; manufacturing different formulas through reasonably selecting the formulation constituents, so that over ten thousands of batches of identities are realized, the batch tracking management of the miniature parts is realized, and a path is opened for industrialized application.

Description

technical field [0001] The invention relates to the technical field of industrial marking, in particular to an XRF-based method for making and detecting labels of miniature parts. Background technique [0002] At present, DPM (direct part marking) is commonly used to mark parts in the field of industrial marking, that is, direct part marking technology, including laser marking, electrochemical marking, mechanical dot marking and inkjet marking. The specific method is to select a large flat surface on the part to mark the Data Matrix code (hereinafter referred to as the DM code), and use laser ablation, electrochemical etching, mechanical dotting and inkjet to form a permanent mark on the surface of the part. The gun or calibrator reads the DM code and obtains the parts, which completes a marking. This technology has been widely used in the marking field of aviation and aerospace industry parts and products. [0003] However, in actual industrial marking, there are often man...

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Problems solved by technology

[0003] However, in actual industrial marking, there are often many special micro-small parts, such as springs, adjustment nails, plugs, etc., mostly small damping seals, films and some polymers, due to stress, size, special surface requirements and other reasons , it is impossible to mark with traditional printed labels, steel stamps and two-dimensional barcodes, and it is impossible to track and manage parts. The reasons are as follows:

[0004] 1. Among the four marking methods of laser marking, electrochemical marking, mechanical dot marking and inkjet marking, the size of the DM code formed by laser marking is the smallest, and the smallest two-dimensional code that can be read by traditional barcode calibrator The code size is 3*3mm, the minimum readable QR code size for electrochemical marking is 12*12mm, the minimum readable QR code size for mechanical dot marking is 8*8mm, and the minimum readable QR code size for inkjet marking is 8 *8mm, the size of the readable two-dimensional code above is too large to meet the requirements for marking small parts

[0005] 2. Although the use of advanced marking equipment such as femtosecond lasers can produce two-dimensional codes with a size smaller than 1*1mm, and the use of imaging equipment such as optical microscopes can also get rid of the poor reading ability of traditional barcode verifiers. However, when DM If the code size is too small, the integrity requirements for the code will be higher, and the impact of pollution and corrosion will be magnified. In the case of a large DM code size, only one point in the DM code module may be corroded, and the code itself The error correction algorithm can be corrected by itself, and this kind of local pollution and corrosion can be completely ignored; however, when the size of the DM code is too small, the pollution and corrosion of a small area will cause many modules in the DM code to be unreadable, which will affect the environment and the code. Durability requirements will be high, resulting in poor implementation

[0006] The existing method of marking micro-small parts is mainly realized by putting the mark on the outer packaging. Usually, several small parts of the same batch are packed in the same packaging bag or box, and the outside is marked uniformly. This method can only It is impossible to identify individual parts by marking the parts of the same batch; and once the parts are taken out of the bag or box, the part identification will disappear, and traceability and automatic data collection are out of the question

[0007] At present, there is little research on the identification of tiny parts at home and abroad. In order to solve this blind spot, a failure remedy method based on tiny parts is proposed, and the identification function of parts is realized by making a specially designed "element code" label on the surface of the parts. , the realization of this function requires the component detection function of XRF (X-Ray fluorescence) X-ray fluorescence spectroscopic analysis technology, which can be used to identify and track management of micro-sized parts of various materials and the whole life cycle

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