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1) Sample: Material is tool steel, thickness 2.6mm, 2.9mm, 3mm 2) Requirement: Test the Rockwell hardness value of tool steel sample 3) Test instrument and environment are high due to tool steel and heat-treated structural steel Hardness, Rockwell hardness test generally uses HRC scale, Rockwell diamond indenter, test force 150kgf. The R-150DT digital Rockwell hardness tester of Ebisu company used in this test, test Rockwell block 65.5HRC, the average value of five tests is 65.3HRC, the error is 0.2HRC, which proves that the accuracy of the machine is within the allowable error of the national standard Within the range, the sample can be tested normally. Laboratory test temperature: 32°C, humidity 46%. Rockwell hardness tester R-150DT Rockwell hardness tester R-150DT Rockwell hardness tester's tolerance and repeatability aA20~≤
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1) Sample: the ceramic material sent by the customer 2) Requirements: the Vickers hardness value HV value and the Rockwell hardness value HRC value of the test material 3) Test instrument and environment This test uses the digital display of EBP Micro Vickers hardness tester DVS-1AT-8P. Before the test, the machine tested the standard hardness block 745HV0.5, and the average value of the five tests was 742HV0.5, which proved that the accuracy of the machine was within the allowable error range of the national standard and the normal test could be carried out. Laboratory test temperature: 25℃, humidity 35% Digital Vickers Hardness Tester DVS-1AT-8P 4) Test data on five points on the sample, the results are as follows: machine model test times test strength guarantee Time D1D2HV hardness value HRC hardness value DVS-1AT-8P10.5kgf 5 seconds 99.28298.597947.1767.6720.5kgf 5 seconds 98.597
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1) Sample: Watch ring material, the matrix is aluminum, the surface is electro-dye coating 2) Requirements: Test the hardness value of the surface coating 3) The test instrument and environment Because the coating thickness is very thin, the micro Vickers hardness tester is generally used carry out testing. This test uses the digital display micro-hardness tester DV-1AT-8P from Ebipro. Before the test, the machine tested the standard hardness block 636HV1, and the average value of the five tests was 633HV1, which proved that the accuracy of the machine was within the allowable error range of the national standard and can be tested normally. Laboratory test temperature: 25℃, humidity 40% Micro-hardness tester DV-1AT-8P4) Before testing, the whole surface of the material is not flat enough, if it is directly placed on the workbench, it is difficult to achieve no gap coupling, if the material and work The gap between the stations will cause the test result to be inaccurate and lose the reference value of the test. This type of material can be used for simple sample preparation: a flattener
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