Method for detecting percentage of medicinal powder of flux-cored wire

Abstract

The invention relates to a method for detecting the percentage of medicinal powder of a flux-cored wire, including the following steps: (1) limit and multiplying factor initial values are preset; (2) a welding wire forming machine is started to run; (3) the speed V1 of a cored solder wire and the speed V2 of a flux-cored wire are respectively collected; (4) the collected real-time speeds are calculated and processed so as to obtain the percentage of the medicinal powder of the flux-cored wire; (5) the percentage composition of the medicinal powder, which is measured in the step (4), is analyzed and judged; under the circumstance that the percentage composition does not comply with the standard, the limit and multiplying factor initial values in the step (1) are adjusted, and the step (3) is executed; and under the circumstance that the percentage composition complies with the standard, the steps are continued. The method can realize more accurate measurement of change of the packing ratio of medicinal powder in the formed flux-cored wire under the functional mode, thereby stably detecting products with poor packing ratio. Furthermore, the detection method is not affected by the factors of the severe on the spot solder wire environment, such as electrical conductivity, magnetic conductivity, and the like, thereby enabling the detection result to be more accurate and effective.

Description

technical field [0001] The invention relates to a method for detecting the powder percentage of a flux-cored welding wire. Background technique [0002] With the continuous advancement of my country's bridge, highway and shipbuilding industries, the welding industry has also continued to develop, and the requirements for welding materials and welding processes have gradually increased. As the scope of use of flux-cored wire in welding materials is increasingly broadened, the manufacturing process of flux-cored wire must be gradually improved, so the relevant detection system for powder content is also gradually emerging. [0003] The traditional detection technology is realized by eddy current detection, which is to receive the eddy current signal of the flux cored wire. However, when the measured object changes, it will cause the impedance of the detection coil to change, thereby affecting the output of the eddy current signal. There are many factors affecting the detect...

AI Technical Summary

Problems solved by technology

Due to the interference of these factors, it is very difficult for ordinary eddy current testing instruments to process and analyze the detected signals, and it also causes the zero point shift of the powder content.

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