Unyango lobushushu bomphezulu lohlulwe lwaziindidi ezimbini: enye yokucima umphezulu kunye nonyango lobushushu, kwaye olunye lunyango lobushushu bekhemikhali.Indlela yokuvavanya ubulukhuni ngolu hlobo lulandelayo:
1. ukucima umphezulu kunye nobushushu bonyango lobushushu
Ukucinywa kobuso kunye nobushushu bonyango luhlala luqhutywa ngokufudumeza kwe-induction okanye ukufudumeza ilangatye.Ezona parameters zobugcisa bubulukhuni bomphezulu, ubulukhuni bendawo kunye nobunzulu obusebenzayo bomaleko.Umvavanyi wobulukhuni beVickers okanye iRockwell hardness tester ingasetyenziselwa uvavanyo lokuqina.Amandla okulinga Ukhetho lunxulumene nobunzulu bomaleko oqinileyo osebenzayo kunye nokuqina komphezulu we-workpiece.Kukho oomatshini bokuqina abathathu ababandakanyekayo apha.
1Ingasebenzisa amandla okulinga e-0.5-100KG ukuvavanya umaleko wokuqina womphezulu obhityileyo njengo-0.05mm ubukhulu.Ukuchaneka kwayo kuphezulu kwaye iyakwazi ukwahlula i-workpieces ephethwe ukushisa.Umahluko omncinci kubunzima bomphezulu, ukongeza, ubunzulu bomgangatho oqinileyo womaleko bukwabonwa ngumvavanyi wobulukhuni beVickers, ngoko ke kuyimfuneko ukuxhobisa umvavanyi wobulukhuni beVickers kwiiyunithi ezenza ukusetyenzwa kobushushu bomhlaba okanye ukusebenzisa inani elikhulu. yezinto zokusebenza zokunyanga ubushushu bomphezulu.
2Kukho izikali ezithathu zomvavanyi wobulukhuni beRockwell onokuthi ukhethe kuwo.Inokuvavanya iindawo zokusebenza eziqinileyo ezinomgangatho osebenzayo owenziwe lukhuni obungaphezulu kwe-0.1mm.Nangona ukuchaneka komvavanyi wobulukhuni be-Rockwell awukho phezulu njengalowo we-Vickers hardness tester, unokukwazi ukuhlangabezana neemfuno njengendlela yokufumanisa ulawulo lomgangatho kunye nokuhlolwa kwesiqinisekiso sezityalo zonyango lobushushu..Ngaphandle koko, ikwanayo neempawu zokusebenza okulula, ukusetyenziswa ngokufanelekileyo, ixabiso eliphantsi, ukulinganisa ngokukhawuleza, kunye nokufunda ngokuthe ngqo amaxabiso obunzima.Umvavanyi wobulukhuni be-Rockwell ongaphezulu unokusetyenziselwa ukukhangela ngokukhawuleza nangokungonakalisi iibhetshi zezixhobo zokusebenza eziphathwe ubushushu nganye nganye.Ibaluleke kakhulu kwiifektri zokwenziwa kwesinyithi kunye nokuvelisa oomatshini.Xa umphezulu wonyango lobushushu bomgangatho owenziwe lukhuni umaleko ungqindilili, umvavanyi wobulukhuni beRockwell nawo unokusetyenziswa.Xa unyango lobushushu ubulukhuni umaleko ubukhulu 0.4-0.8mm, isikali HRA ingasetyenziswa.Xa ubunzulu bomaleko obunzima Xa bungaphezulu kwe-0.8mm, isikali se-HRC sinokusetyenziswa.UVickers, uRockwell kunye nomgangatho ophezulu we-Rockwell amaxabiso asemgangathweni amathathu anokuguqulwa ngokulula komnye nomnye, aguqulelwe kwimigangatho, imizobo okanye amaxabiso obunzima afunwa ngabasebenzisi, kwaye itafile yokuguqulwa ehambelanayo ikwi-ISO yomgangatho wamazwe ngamazwe.Umgangatho we-ASTM waseMelika kunye nomgangatho waseTshayina we-GB/T unikiwe.
(3) Xa ubukhulu bomgangatho owenziwe ngobushushu bungaphezulu kwe-0.2mm, i-Leeb hardness tester ingasetyenziswa, kodwa i-C-type sensor kufuneka ikhethwe.Xa ulinganisa, ingqwalasela kufuneka ihlawulwe kwi-surface finish kunye nobukhulu obupheleleyo be-workpiece.Le ndlela yokulinganisa ayinayo i-Vickers kunye ne-Rockwell Umhloli wobulukhuni uchanekile, kodwa ufanelekile umlinganiselo wesayithi kwi-factory.
2. unyango ubushushu imichiza
Unyango lobushushu beMichiza kukungena kumphezulu we-workpiece kunye neeathom zento enye okanye ezininzi zeekhemikhali, ngaloo ndlela utshintsha ukubunjwa kweekhemikhali, ukwakheka kunye nokusebenza komphezulu we-workpiece.Emva kokucima kunye nokushisa okuphantsi kweqondo lokushisa, umphezulu we-workpiece unobunzima obuphezulu kunye nokumelana nokugqoka.kunye namandla okudibana nokudinwa, kwaye undoqo we-workpiece unamandla aphezulu kunye nokuqina.Iiparamitha eziphambili zezobugcisa ze-workpiece yonyango lokushisa kweekhemikhali zibunzulu bomaleko obunzima kunye nobunzima bomhlaba.Umgama apho ukuqina kwehla ukuya kwi-50HRC bubunzulu obusebenzayo bomaleko oqinileyo.Uvavanyo lobulukhuni bomphezulu lwemichiza yokusebenzela enyangwe bubushushu buyafana novavanyo lobulukhuni bomphezulu ocinyiweyo wezinto zokusebenza ezinyangwa ngubushushu.Abavavanyi bobulukhuni beVickers, abavavanyi bobulukhuni be-Rockwell abaphezulu okanye abavavanyi bobulukhuni baseRockwell bangasetyenziswa.Umvavanyi wobulukhuni ukubona, kuphela ubukhulu be-nitriding thicker buncinci, ngokubanzi abukho ngaphezu kwe-0.7mm, emva koko umvavanyi wobulukhuni be-Rockwell awunakusetyenziswa.
3. unyango lobushushu bendawo
Ukuba iindawo unyango ubushushu basekuhlaleni zifuna ubulukhuni eliphezulu lendawo, unyango ukucima ubushushu lendawo ukucima kunokwenziwa ngokusebenzisa ukufudumeza induction, njl iindawo ezinjalo ngokuqhelekileyo kufuneka uphawu kwindawo yokucima ubushushu unyango lwendawo kunye nexabiso lendawo ubulukhuni kumzobo, kunye nobulukhuni. uvavanyo lwamacandelo kufuneka luqhutywe kwindawo echongiweyo, isixhobo sokuvavanya ubulukhuni singasebenzisa i-Rockwell hardness tester ukuvavanya ixabiso lobunzima be-HRC.Ukuba unyango lobushushu lukhuni umaleko ongekho nzulu, umvavanyi wobulukhuni be-Rockwell ongaphezulu unokusetyenziselwa ukuvavanya ixabiso lobulukhuni be-HRN.
Ixesha lokuposa: Feb-22-2023
