Uvavanyo lobulukhuni be-Rockwell yee-PEEK polymer composites

I-PEEK (i-polyetheretherketone) yinto ephezulu yokusebenza eyenziwe ngokudibanisa i-PEEK resin kunye nezinto zokuqinisa ezifana ne-carbon fiber, i-glass fiber, kunye neekeramics. Izinto ze-PEEK ezinobulukhuni obuphezulu zixhathisa ngakumbi kwimikrwelo kunye ne-abrasion, kwaye ifanelekile ukuvelisa iinxalenye zokunxiba kunye neengxenye ezifuna inkxaso ephezulu yamandla. Ubunzima obuphezulu be-PEEK buvumela ukuba igcine imilo yayo nangemva koxinzelelo lomatshini kunye nokusetyenziswa kwexesha elide, okwenza ukuba isetyenziswe ngokubanzi kwi-aerospace, i-automotive, unyango kunye nezinye iindawo.

Kwizinto ezidibeneyo ze-PEEK zepolymer, ubunzima be-Rockwell sesinye sezibonakaliso eziphambili zokuvavanya ukusebenza kwayo. Umgaqo wokuvavanya ubulukhuni be-Rockwell usekwe kwindlela yokungeniswa, emisela ixabiso lobulukhuni bezinto ngokulinganisa ubunzulu bobunzulu obuveliswe ngokucinezela i-indenter ethile kumphezulu wezinto phantsi kovavanyo oluthile lwamandla. Ukongeza, kuyafuneka ukuba kuvavanywe iipropathi zayo zoomatshini ngokuvavanya amandla ayo okuqina, ukugoba amandla, amandla okugoba, njl., kwaye ulandele imigangatho yamazwe ngamazwe okanye yelizwe efana ne-ISO, ASTM, njl.

Iziphumo zovavanyo lobulukhuni beRockwell zinokubonisa ngokuthe ngqo amandla ezinto ezihlanganisiweyo ze-PEEK zepolymer ukumelana noguquko lweplastiki. Ubunzima beRockwell obuphezulu buthetha ukuba i-material inomkrwelo owomeleleyo kunye nokumelana nokunxiba, okubalulekileyo ekuveliseni iinxalenye kwindawo ye-aerospace, ukuqinisekisa ukuba iinxalenye zinokusebenza ngokuzinzileyo nangexesha elide kwiimeko ezintsonkothileyo zoomatshini kunye neemeko ezinzima; xa isetyenziswe kwintsimi yeemoto ukuvelisa iinxalenye ze-injini kunye neenxalenye zenkqubo yokuhambisa, izinto ezidibeneyo ze-PEEK ezinobunzima obuphezulu zinokuphucula ngokufanelekileyo ubomi benkonzo kunye nokuthembeka kwamacandelo; kwintsimi yezonyango, xa isetyenziselwa ukuvelisa izixhobo zotyando okanye ukufakelwa, ubunzima obufanelekileyo abukwazi ukuqinisekisa kuphela ukusebenza kwesixhobo, kodwa nokuhlangabezana nokuhambelana kakuhle komatshini phakathi kokufakelwa kunye nezicubu zomntu. Kwangaxeshanye, iziphumo zovavanyo lobulukhuni be-Rockwell nazo zingasetyenziswa njengesiseko esiphambili solawulo lomgangatho, esetyenziselwa ukubeka esweni uzinzo lwePEEK yokusebenza kwezinto ngexesha lenkqubo yokuvelisa, kunye nokufumanisa ngokukhawuleza iingxaki ezisemgangathweni ezibangelwa kukutshintsha kwezinto ekrwada, itekhnoloji yokucubungula kunye nezinye izinto.

Xa uvavanya ukuqina kwe-Rockwell yezinto ze-PEEK, uhlobo lwe-indenter kunye novavanyo lwamandla kufuneka lukhethwe ngokufanelekileyo ngokweempawu zezinto eziphathekayo kunye noluhlu lobunzima obunokwenzeka. Izikali ezisetyenziswa ngokuqhelekileyo ziquka i-HRA, i-HRB, i-HRC, i-HRE, i-HRR, i-HRL, i-HRM, njl.

Phambi kovavanyo olusesikweni, qiniseka ukuba umgangatho wovavanyo we-PEEK umbaxa, ugudileyo, kwaye awunayo ioyile, umaleko we-oxide okanye obunye ubumdaka ukuqinisekisa ukuchaneka kweziphumo zovavanyo. Beka isampuli ngokuqinileyo kwi-workbench ye-hardness tester ukuqinisekisa ukuba isampuli ayishukumi ngexesha lovavanyo. Ngalo lonke ixesha uvavanyo lwenziwa, iinkqubo zokusebenza ze-hardness tester kufuneka zilandelwe ngokungqongqo, kwaye amandla okuvavanya kufuneka asetyenziswe ngokukhawuleza ukuphepha ukulayisha impembelelo. Emva kokuba uvavanyo lwamandla luzinzisiwe kwixesha elichaziweyo, funda kwaye urekhode ixabiso lobunzima be-Rockwell elihambelana nobunzulu bokungena. Ukuze ufumane idatha engakumbi yommeli, imilinganiselo emininzi yenziwa ngokubanzi kwiindawo ezahlukeneyo, ezifana nokukhetha i-5 okanye amanqaku amaninzi okuvavanya ahlukeneyo, kwaye iziphumo zokulinganisa zihlalutyelwe ukubala iiparitha ezifana nexabiso eliphakathi kunye nokutenxa okusemgangathweni.