Marking card for marking position of metallographic inlay sample and use method of marking card

Abstract

A mark card for marking the position of the metallographic inlay sample is of a cuboid structure composed of a plurality of color block groups, and each color block group is internally provided with a plurality of color blocks with different colors. The use method of the marking card comprises the following steps: S1, according to the length of a to-be-detected sample and the length of a defect on the to-be-detected sample, cutting out the marking card with a proper length, and adhering the marking card to one side of the defect position on the to-be-detected sample, so that the length direction of the marking card is along the length direction of the defect, and the lower end surface of the marking card is parallel to the grinding and polishing surface of the to-be-detected sample; S2, recording colors of color blocks corresponding to the positions of the lower end and the upper end of the defect; S3, embedding the to-be-detected sample adhered with the marking card to obtain an embedded sample; S4, grinding and polishing the inlaid sample, and when the inlaid sample is ground and polished to the color of a color block corresponding to the lower end of the defect displayed by the marking card, grinding and polishing the defect close to the defect, wherein if the defect is polished to the color of the color block corresponding to the upper end of the defect displayed by the marking card, the defect is about to be polished to the tail end.

Description

technical field [0001] The invention relates to the technical field of physical and chemical performance detection, in particular to a marking card for marking the position of a metallographic inlay sample and a use method thereof. Background technique [0002] In the testing of physical and chemical properties, due to the irregular shape of some samples, in order to fix the samples or standardize the shape of the samples, the metallographic samples should be inlaid before grinding and polishing. [0003] Metallographic sample mounting includes hot mounting and cold mounting. The thermal mounting process is generally a process in which the sample is first placed in the mounting cylinder, and then the mounting powder is poured into the mounting cylinder to bury the sample, and then pressurized and heated to make the resin vitrified and the sample integrated. Commonly used thermal mounting material powders include phenolic resin, acrylic resin, epoxy resin, etc. Generally, th...

AI Technical Summary

Problems solved by technology

Traditional grinding and polishing methods and marking tools need to obtain the grinding and polishing depth of the sample through measurement and geometric relationship conversion. The premise of satisfying these conversion relationships is that the grinding and polishing surface is at the same level, and the flatness of the grinding and polishing surface of the sample is extremely demanding. High, if the sample maker lacks technology or experience, the grinding and polishing surface will be inclined heavily, and the grinding and polishing depth value converted by the traditional method or marking tool will seriously deviate from the actual value, resulting in the failure of the test

Traditional marking tools are all made of metal, the manufacturing process is relatively difficult and the cost is high

Moreover, the metal material has high hardness and wear resistance, which increases the difficulty of the sample preparation grinding and polishing process.

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