ISO 28080 INTERNATIONAL STANDARD edition Second2021-02 Hardmetals Abrasion tests for hardmetals Metaux-durs-Essaisd'abrasion des métaux-durs ISORebg02 0nbey TSo @ ISO 2021 IS0 28080:2021(E) COPYRIGHTPROTECTEDDOCUMENT @IS0 2021 Ad rigbitsduserverlutihilkesotherwise sipeacifjefhrororrdyuaingydimehescoleektoufioitsrieaplamenitatiominplrdiofgpisotocopying,pnbljcationposting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or Iso's member body in the country of the requester. fSotobyFigntficBlandonnet8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 WeBlite:copyrightfso.org Published in Switzerland i @ISo 2021-All rights reserved IS028080:2021(E) Contents Page Foreword iv Introduction. V Scope 1 2 Normative references 1 3 Terms and definitions .1 4 Principle .2 Materials 2 5.1 Test pieces . 2 5.1.1 Overall sizes .2 5.1.2 Surface finish 5.2 Abrasive. 2 5.3 Reference materials .2 5.4 Wheel 3 6 Apparatus. 3 6.1 Summaryofapparatuses (testsystems) 3 6.2 4 Abrasive-feedmechanism 6.3 Vacuumextraction 6.4 Control of wheel speed 6.5 Calibration of abrasiveflow 5 6.6 Test load 5 7 Preparation oftest piece 6 7.1 Test-piece cleaning.. 6 7.2 Test-piece weighing 6 8 Procedure. 7 8.1 General 7 8.2 Test-piece clamping 7 8:4 3tPi caltestoperationconditions 8.5 End of test or test stop. 7 8.6 Interrupted tests. 8 9 Expression of results 8 9.1 Single-step test. 8 9.2 Multiple-step test. 8 Tablclaltitinmf.abrasion.rate .8 9.2.1 9.3 Illustration of trends of wear, frictionforce andnormal force 9 9.4 Illustration of comparative set of measurements using two abrasion materials 10 9 Uncertainty ofmeasurement. 10 11 Test report. .11 Bibliography ..13 @IS0 2021-All rights reserved iii