High-carbon steel wire rod austenite crystal grain size measuring method
A technology of austenite grains and measurement methods, which is applied in measurement devices, particle size analysis, particle and sedimentation analysis, etc., can solve the problems of picric acid toxicity, chronic poisoning, and is not suitable for long-term large-scale testing and use, and achieves sample preparation. Simple, high success rate, accurate measurement of the effect
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[0017] Taking the SWRH82B and SWRS92B wire rods with a diameter of 13mm as an example, the chemical composition of the two is shown in Table 1. Cut 10cm long wire rods from the above two wire rods respectively, and then use a metallographic cutting machine to cut 3 gaps with a depth of about 3-4mm on the two wire rods, and then put the two wire rods into the heating furnace After heating for 10 minutes, quickly put the two sections of wire rod into cold water below 30°C, and keep stirring until the wire rod is completely cooled; then dry the wire rod with a hair dryer, and then use a hammer along the gap Break the wire rod. The fracture of the wire rod was observed and photographed under the scanning electron microscope, and the photographs were as follows: figure 1 and figure 2 As shown, the grain size was finally measured using the measurement tool on the scanning electron microscope, and the average grain size of the two was 35.2 μm and 11.0 μm, respectively.
[0018] T...
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