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HT360C датащи(PDF) 19 Page - Qingdao Hantek Electronic Co., Ltd. |
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HT360C датащи(HTML) 19 Page - Qingdao Hantek Electronic Co., Ltd. |
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19 / 46 page ![]() Quick Start EN Copyright©Qingdao Hantek Electronics Co.,LTD HT360 series user manual 11 under the effect of elastic force, and calculate the hardness value with the ratio of the rebound speed and impact speed of the punch at a distance of 1mm from the sample surface. The calculation formula is as follows: HL=1000 * VB/VA Where: HL - Leeb hardness value VB -- Rebound speed of impact body VA - Impact velocity of impact body The output signal of the impact device is shown in the following diagram: Fig. 4 Output signal of impact device Technical characteristics Serial No Impact device type Hardness value of standard Leeb hardness block Indication error Repeatability of indication 1 D 760±30HLD 530±40HLD ±6 HLD ±10 HLD 6 HLD 10 HLD 2 DC 760±30HLDC 530±40HLDC ±6 HLDC ±10 HLDC 6 HLD 10 HLD 3 DL 878±30HLDL 736±40HLDL ±12 HLDL 12 HLDL 4 D+15 766±30HLD+15 544±40HLD+15 ±12 HLD+15 12 HLD+15 5 G 590±40HLG 500±40HLG ±12 HLG 12 HLG 6 E 725±30HLE 508±40HLE ±12 HLE 12 HLE 7 C 822±30HLC 590±40HLC ±12 HLC 12 HLC Table 41 Display error and repeatability This series of hardness tester meets the following standards 1. GB/T 17394. 1-2014 Leeb Hardness Test for Metallic Materials Part 1: Test Method 2. GB/T 17394. 2-2012 Leeb Hardness Test for Metallic Materials Part 2: Verification and Calibration of Hardness Tester |
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