Continuous marking machine measuring and calibrating method

Abstract

The invention provides a continuous marking machine measuring and calibrating method, which comprises the following steps of: treating any one face of the cross section of a steel strip by employing a milling machine, taking a Q235 steel plate as an example and selecting the steel strip with the plate thickness of 200mm*10mm*10mm, and aligning one face of the steel strip for marking and ruling by using a marking machine, wherein the depth of ruling points is 1mm, the ruling points can be clearly identified, each ruling point has the size similar to that of a rigid punch of the marking machine, the continuous ruling points cover the length of the steel strip, the points are not repeatedly punched, and the ruled steel strip is identified, numbered, measured and calibrated; the measuring and calibrating temperature is 0-50 DEG C, the humidity is less than or equal to 85 percent, the size of a caliper or a digital caliper MPE is + / -0.01mm, and the specification is 0-150mm; each measuring point is measured for at least three times in the process of measuring the scale distance of a tension sample, and the mean value is taken as a measurement result; the calculated and read data is a bit more than the error specified by the measured sample, and the reading accords with an even rule of rounding off; and the detection period is 12 months at intervals.

Description

technical field [0001] The invention relates to the tensile detection of metal materials, and is especially suitable for the measurement and verification method of a continuous marking machine. Background technique [0002] Metal material tensile test is a routine test item for testing the mechanical properties of metal materials, in which the elongation is the percentage of the ratio of the elongation of the original gauge length to the original gauge length L0, and the measurement process uses small marks, thin dashed lines or thin ink lines To mark the original gauge length, since the stretching process of steel products is accompanied by the shedding of a large amount of iron oxide scale, the marking of the original gauge length usually uses a continuous marking machine (hard punch continuous gauge marking machine hereinafter referred to as continuous marking machine) Carry out scoring, so that the original punctuation can be clearly recorded on the sample, and after the...

AI Technical Summary

Problems solved by technology

GB / T 228.1-2010 "Metallic Materials Tensile Test Part 1: Room Temperature Test Method" requires that the mark marking of the original gauge length be accurate to ±1%. How to perform metrological verification on the punctuation machine, the metrological verification department has no relevant information Verification Regulations

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