Iindlela zokuvavanya ubulukhuni beRockwell Knoop kunye neVickers kwiiseramikhi ze-aluminium nitride kunye neendlela zokuvavanya iibheringi zesinyithi eziqengqelekayo

1.Rockwell Knoop Vickers indlela yovavanyo lobulukhuni beeseramikhi ze-aluminium nitride
Ekubeni izinto zeseramikhi zinesakhiwo esintsonkothileyo, ziqinile kwaye zibuthathaka, kwaye zine-deformation encinci yeplastiki, iindlela zokubonakalisa ubulukhuni ezisetyenziswa kakhulu ziquka ubulukhuni beVickers, ubulukhuni beKnoop kunye nobunzima beRockwell. IShancai Company ineentlobo ngeentlobo zee-hardness testers, kunye nee-hardness testers ezahlukeneyo kunye nee-hardness testers ezahlukeneyo ezinxulumene noko.
Le migangatho ilandelayo ingasetyenziswa njengesalathiso:
Uvavanyo lwe-GB/T 230.2 lweMetallic Materials Rockwell Hardness:
Kukho izikali ezininzi zokuqina kweRockwell, kwaye izixhobo zeseramikhi zihlala zisebenzisa izikali ze-HRA okanye ze-HRC.
Uvavanyo lobunzima be-GB/T 4340.1-1999 lweMetal Vickers kunye novavanyo lobunzima be-GB/T 18449.1-2001 lweMetal Knoop.
Iindlela zokulinganisa zeKnoop kunye neMicro-Vickers ziyafana ngokusisiseko, umahluko kukusetyenziswa kwee-indenter ezahlukeneyo.
Kubalulekile ukuqaphela ukuba ngenxa yohlobo olukhethekileyo lwemveliso, singasusa ii-indentations zeVickers ezingasebenziyo ngokwemeko ye-indentation ngexesha lokulinganisa ukuze sifumane idatha echanekileyo ngakumbi.
2. Iindlela zokuvavanya iibheringi zesinyithi eziqengqelekayo
Ngokweendlela zovavanyo lobulukhuni bentsimbi kunye neenxalenye zesinyithi ezingezizo i-ferrous ezichazwe kwi-JB/T7361-2007, kukho iindlela ezininzi zovavanyo ngokwenkqubo yomsebenzi, zonke ezinokuvavanywa nge-Shancai hardness tester:
1） Indlela yokuvavanya ubulukhuni bukaVickers
Ngokubanzi, iindawo zokuthwala eziqinileyo kumphezulu zivavanywa ngendlela yovavanyo lobunzima beVickers. Kufuneka kuqwalaselwe ukugqitywa komphezulu wesixhobo somsebenzi kunye nokukhethwa kwamandla ovavanyo.
2）Indlela yokuvavanya ubulukhuni beRockwell
Uninzi lovavanyo lokuqina kweRockwell lwenziwa kusetyenziswa isikali se-HRC. Umvavanyi wokuqina kweShancai Rockwell uqokelele amava eminyaka eli-15 kwaye ngokusisiseko unokwanelisa zonke iimfuno.
3） Indlela yokuvavanya ubulukhuni bukaLeeb
Uvavanyo lokuqina kweLeeb lungasetyenziselwa iibheringi ezifakelweyo okanye ezinzima ukuziqhekeza. Ukuchaneka kwalo kokulinganisa akulunganga njengovavanyo lokuqina kwebhentshi.
Lo mgangatho usebenza kakhulu kuvavanyo lobunzima beenxalenye zentsimbi, iinxalenye zentsimbi ezifakwe isinyithi nezithambileyo kunye neenxalenye zentsimbi ezigqityiweyo kunye neenxalenye zentsimbi ezingenayo i-ferrous.