Kwiimveliso zemizi-mveliso, intsimbi yegiya isetyenziswa kakhulu kwiinkqubo zokuhambisa amandla ezixhobo ezahlukeneyo zoomatshini ngenxa yamandla ayo aphezulu, ukumelana nokunxiba kunye nokungakhathali. Umgangatho wayo uchaphazela ngokuthe ngqo umgangatho kunye nobomi bezixhobo. Ke ngoko, ukulawulwa komgangatho wentsimbi yentsimbi kubaluleke kakhulu. Xa ukhetha, amandla ayo, ukuqina kunye nokumelana nokunxiba kufuneka kuthathelwe ingqalelo. Ngaphambi kokucubungula intsimbi yentsimbi, kufuneka sihlalutye isakhiwo se-metallographic, ukuqina, ukwakheka kweekhemikhali, njl. Ubume be-metallographic kunye nobunzima bentsimbi yentsimbi zizibonakaliso eziphambili zokuvavanya iimpawu zayo zemishini, imiphumo yokunyanga ukushisa kunye nobomi benkonzo. Uhlalutyo lwe-metallographic kunye novavanyo lobulukhuni bentsimbi yentsimbi kufuneka lulandele ngokungqongqo inkqubo esemgangathweni, kwaye luqulunqe isicwangciso sovavanyo olusekwe kwiimpawu zezinto kunye neemeko zokusebenza:
Okokuqala, uhlalutyo lwe-metallographic. Ulwakhiwo metallographic of gear intsimbi inempembelelo enkulu ekusebenzeni kwayo, ezifana ubunzulu umaleko carburized, ubungakanani eziziinkozo, ukuhanjiswa carbide, njl Kufuneka ukugqiba amanyathelo uhlalutyo, ezifana isampuli, ukulungiselela isampuli, umhlwa, uze uqwalasele isakhiwo. Kwakhona kunokuba yimfuneko ukukhankanya iintlobo zezicubu eziqhelekileyo, ezifana ne-martensite, i-bainite, i-pearlite, kunye nendlela yokuvavanya ukuba ezi zicubu zihlangabezana nemigangatho.
Emva koko kuza uvavanyo lobulukhuni. Ubunzima bentsimbi yentsimbi buhambelana ngokuthe ngqo nokumelana nokugqoka kunye namandla. Iindlela eziqhelekileyo zokuvavanya ubulukhuni zibandakanya ukuqina kweRockwell, ubulukhuni beBrinell, ubulukhuni beVickers, kunye nokuqina okunokwenzeka komphezulu weRockwell kwiileya zecarburized. Kuyafuneka ukuba uchaze iimeko ezisebenzayo zeendlela ezahlukeneyo zovavanyo, ezinje ngeVickers okanye i-Rockwell engaphezulu yeeleya ze-carburized, kunye ne-Brinell okanye i-Rockwell ngobulukhuni obupheleleyo. Ngelo xesha, imigangatho yovavanyo, njenge-ASTM okanye i-GB, kunye nezilumkiso ngexesha lovavanyo, njengokukhethwa kwamanqaku okuvavanya, unyango oluphezulu, njl., kufuneka lukhankanywe.
Ngaphambi kokuhlalutya, kufuneka siqale sinqumle kwaye senze isampuli yentsimbi yentsimbi. Ngezantsi sisebenzisa umatshini wokusika isampuli ye-metallographic echanekileyo njengomzekelo wokubonisa inkqubo yokusika isampuli.
1. Khupha i-workpiece kwaye uyibambe nge-clamp ekhawulezayo.
2. Emva kokuba ubambe i-workpiece, faka isikhuselo sokukhusela.
3. Beka iiparamitha zokusika kwisikrini kwaye uqale inkqubo yokusika
4. Vula isiciko esiphezulu kwaye uthathe isampuli esisikiweyo ukugqiba inkqubo yokusika isampuli.
Iisampulu ezisikiweyo zingasetyenziselwa iinkqubo zokulungiselela iisampulu ezilandelayo ezifana nokukhwela, ukugawula, kunye nokupholisha, emva koko uvavanyo lobulukhuni begiya okanye uhlalutyo lwe-metallographic lunokwenziwa.
Ixesha lokuposa: Apr-02-2025
