{"id":11128,"date":"2024-12-14T08:04:41","date_gmt":"2024-12-14T16:04:41","guid":{"rendered":"https:\/\/chansmachining.com\/how-to-test-the-hardness-of-copper\/"},"modified":"2024-12-14T08:28:16","modified_gmt":"2024-12-14T16:28:16","slug":"how-to-test-the-hardness-of-copper","status":"publish","type":"post","link":"https:\/\/chansmachining.com\/sk\/how-to-test-the-hardness-of-copper\/","title":{"rendered":"Ako otestova\u0165 tvrdos\u0165 medi?"},"content":{"rendered":"\n

\u010co je tvrdos\u0165 medi?<\/strong><\/h2>\n\n\n\n

Tvrdos\u0165 je schopnos\u0165 materi\u00e1lu odol\u00e1va\u0165 deform\u00e1cii, po\u0161kriabaniu alebo vtla\u010deniu pri p\u00f4soben\u00ed sily. Tvrdos\u0165 je d\u00f4le\u017eitou vlastnos\u0165ou kovov, ako je me\u010f, preto\u017ee ur\u010duje, ako dobre dok\u00e1\u017ee materi\u00e1l odol\u00e1va\u0165 opotrebovaniu, tlaku a in\u00fdm vplyvom prostredia.

Me\u010f je vo svojej podstate m\u00e4k\u0161ia ako in\u00e9 kovy, napr\u00edklad oce\u013e. Jej tvrdos\u0165 sa v\u0161ak v\u00fdrazne l\u00ed\u0161i v z\u00e1vislosti od jej zlo\u017eenia (\u010dist\u00e1 me\u010f vs. zliatiny, ako je bronz alebo mosadz) a techn\u00edk spracovania (napr. \u017e\u00edhanie, spracovanie za studena).

Testovanie tvrdosti medi je ve\u013emi d\u00f4le\u017eit\u00e9, preto\u017ee zaru\u010duje, \u017ee materi\u00e1l bude v konkr\u00e9tnych aplik\u00e1ci\u00e1ch fungova\u0165 pod\u013ea o\u010dak\u00e1van\u00ed. Pochopenie sp\u00f4sobu hodnotenia tvrdosti medi je d\u00f4le\u017eit\u00e9 pre v\u00fdrobn\u00e9, technick\u00e9 a kutilsk\u00e9 projekty, preto\u017ee zaru\u010duje, \u017ee materi\u00e1l sp\u013a\u0148a pr\u00edslu\u0161n\u00e9 krit\u00e9ri\u00e1.<\/p>\n\n\n\n

Pre\u010do je testovanie tvrdosti d\u00f4le\u017eit\u00e9 pre me\u010f<\/strong><\/h2>\n\n\n\n

Sk\u00fa\u0161ky tvrdosti medi sl\u00fa\u017eia na mnoh\u00e9 \u00fa\u010dely:<\/p>\n\n\n\n

    \n
  • Trvanlivos\u0165<\/strong>: Tvrdos\u0165 medi ovplyv\u0148uje to, ako dobre zn\u00e1\u0161a fyzick\u00fa z\u00e1\u0165a\u017e, v\u010faka \u010domu je ide\u00e1lna na ur\u010dit\u00e9 \u00falohy, najm\u00e4 v priemyseln\u00fdch aplik\u00e1ci\u00e1ch.<\/li>\n\n\n\n
  • Kujnos\u0165 vs. pevnos\u0165<\/strong>: Zatia\u013e \u010do me\u010f je \u010dasto poddajn\u00e1, jej tvrdos\u0165 m\u00f4\u017ee by\u0165 siln\u00fdm ukazovate\u013eom jej pevnosti, \u010do je rozhoduj\u00face pri v\u00fdbere spr\u00e1vneho materi\u00e1lu pre ur\u010dit\u00fa \u00falohu.<\/li>\n\n\n\n
  • Kontrola kvality<\/strong>:Sk\u00fa\u0161ky tvrdosti sa pou\u017e\u00edvaj\u00fa vo v\u00fdrobe, aby sa zaru\u010dilo, \u017ee vyroben\u00e1 me\u010f je jednotn\u00e1 a sp\u013a\u0148a po\u017eiadavky odvetvia. Pod\u013ea Medzin\u00e1rodnej organiz\u00e1cie pre normaliz\u00e1ciu (ISO) je udr\u017eiavanie presnej \u00farovne tvrdosti zliatin medi rozhoduj\u00face pre kvalitu a \u017eivotnos\u0165 materi\u00e1lu.<\/li>\n<\/ul>\n\n\n\n

    V\u00fdrobcovia a technici m\u00f4\u017eu overi\u0165, \u010di je me\u010f prijate\u013en\u00e1 na zam\u00fd\u0161\u013ean\u00e9 pou\u017eitie, \u010di u\u017e ide o elektroin\u0161tal\u00e1cie, vodovodn\u00e9 potrubia alebo \u0161pecializovan\u00e9 zliatiny, ak vedia, ako pos\u00fadi\u0165 jej tvrdos\u0165.<\/p>\n\n\n\n

    Met\u00f3dy testovania tvrdosti medi<\/strong><\/h2>\n\n\n\n

    Existuj\u00fa r\u00f4zne met\u00f3dy sk\u00fa\u0161ania tvrdosti medi, pri\u010dom ka\u017ed\u00e1 z nich m\u00e1 svoje v\u00fdhody a vyu\u017eitie. Ni\u017e\u0161ie s\u00fa uveden\u00e9 najob\u013e\u00fabenej\u0161ie techniky sk\u00fa\u0161ania tvrdosti pou\u017e\u00edvan\u00e9 v metalurgii a materi\u00e1lovej vede. Tieto postupy vych\u00e1dzaj\u00fa z celosvetov\u00fdch priemyseln\u00fdch noriem vr\u00e1tane ASTM E10 (Brinell), ASTM E384 (Vickers) a ASTM E18 (Rockwell).<\/p>\n\n\n\n

    Sk\u00fa\u0161ka tvrdosti pod\u013ea Brinella<\/strong><\/h3>\n\n\n\n
    \"Brinell<\/figure>\n\n\n\n

    Sk\u00fa\u0161ka tvrdosti pod\u013ea Brinella je jedn\u00fdm z naj\u010dastej\u0161ie pou\u017e\u00edvan\u00fdch postupov na ur\u010denie tvrdosti materi\u00e1lov, ako je me\u010f, najm\u00e4 ak je povrch drsn\u00fd alebo nerovn\u00fd. T\u00e1to sk\u00fa\u0161ka spo\u010d\u00edva v zatl\u00e1\u010dan\u00ed tvrdej oce\u013eovej alebo karbidovej gu\u013e\u00f4\u010dky s ur\u010dit\u00fdm priemerom do materi\u00e1lu za s\u00fa\u010dasn\u00e9ho p\u00f4sobenia vopred ur\u010den\u00e9ho za\u0165a\u017eenia. Priemer vrypu, ktor\u00fd zostane v materi\u00e1li, sa potom meria na ur\u010denie Brinellovho \u010d\u00edsla tvrdosti (BHN).<\/p>\n\n\n\n

    Ako to funguje v pr\u00edpade medi<\/strong>:<\/p>\n\n\n\n

      \n
    • Gu\u013eov\u00fd hrot, \u010dasto vyroben\u00fd z ocele alebo karbidu, sa zatla\u010d\u00ed do povrchu medi ur\u010ditou silou.<\/li>\n\n\n\n
    • Po ur\u010ditom \u010dase sa indentor vytiahne a zmeria sa priemer vtla\u010dku.<\/li>\n\n\n\n
    • V\u00fdsledok sa pou\u017eije na ur\u010denie Brinellovho \u010d\u00edsla tvrdosti, ktor\u00e9 meria odolnos\u0165 materi\u00e1lu vo\u010di vtl\u00e1\u010daniu.<\/li>\n<\/ul>\n\n\n\n

      V\u00fdhody<\/strong>:<\/p>\n\n\n\n

        \n
      • Vhodn\u00e9 na hodnotenie m\u00e4k\u0161\u00edch materi\u00e1lov, ako je me\u010f.<\/li>\n\n\n\n
      • Bezprobl\u00e9mov\u00e9 a n\u00e1kladovo efekt\u00edvne.<\/li>\n\n\n\n
      • Zabezpe\u010duje presn\u00e9 v\u00fdsledky pri v\u00e4\u010d\u0161\u00edch vzork\u00e1ch.<\/li>\n<\/ul>\n\n\n\n

        Obmedzenia<\/strong>:<\/p>\n\n\n\n

          \n
        • Nie s\u00fa vhodn\u00e9 pre mal\u00e9 alebo tenk\u00e9 meden\u00e9 vzorky.<\/li>\n\n\n\n
        • Menej presn\u00e9 ako in\u00e9 techniky (napr. Vickersova met\u00f3da).<\/li>\n<\/ul>\n\n\n\n

          Tento postup je schv\u00e1len\u00fd r\u00f4znymi priemyseln\u00fdmi normami a \u010dasto sa pou\u017e\u00edva v z\u00e1vodoch na spracovanie medi<\/strong> na zabezpe\u010denie rovnomernosti materi\u00e1lu.<\/p>\n\n\n\n

          Sk\u00fa\u0161ka tvrdosti pod\u013ea Vickersa<\/strong><\/h3>\n\n\n\n
          \"Vickers<\/figure>\n\n\n\n

          Vickersova sk\u00fa\u0161ka tvrdosti je jedn\u00fdm z najpresnej\u0161\u00edch postupov sk\u00fa\u0161ania tvrdosti, najm\u00e4 na ur\u010denie tvrdosti mal\u00fdch alebo tenk\u00fdch meden\u00fdch vzoriek. Pri tejto sk\u00fa\u0161ke sa pou\u017e\u00edva diamantov\u00fd pyram\u00eddov\u00fd hrot, ktor\u00fd zanech\u00e1va na povrchu materi\u00e1lu mal\u00fd odtla\u010dok. \u010casto sa pou\u017e\u00edva, ke\u010f sa vy\u017eaduje presnos\u0165, najm\u00e4 pri tenk\u00fdch meden\u00fdch f\u00f3li\u00e1ch a presn\u00fdch s\u00fa\u010diastkach.<\/p>\n\n\n\n

          Ako to funguje pri medi<\/strong>:<\/p>\n\n\n\n

            \n
          • Pri p\u00f4soben\u00ed vopred stanovenej sily sa diamantov\u00e1 pyram\u00edda so \u0161tvorcovou z\u00e1klad\u0148ou zatla\u010d\u00ed do meden\u00e9ho povrchu.<\/li>\n\n\n\n
          • Vickersovo \u010d\u00edslo tvrdosti (VHN) sa ur\u010d\u00ed meran\u00edm ve\u013ekosti vtla\u010dku pod mikroskopom.<\/li>\n\n\n\n
          • Ak s\u00fa potrebn\u00e9 presn\u00e9 merania tenk\u00fdch meden\u00fdch plechov alebo povlakov, je t\u00e1to sk\u00fa\u0161ka ve\u013emi u\u017eito\u010dn\u00e1.<\/li>\n<\/ul>\n\n\n\n

            V\u00fdhody<\/strong>:<\/p>\n\n\n\n

              \n
            • Mimoriadne presn\u00e9 a prec\u00edzne, najm\u00e4 pri mal\u00fdch alebo tenk\u00fdch vzork\u00e1ch.<\/li>\n\n\n\n
            • Medzi mnoh\u00e9 materi\u00e1ly, s ktor\u00fdmi sa d\u00e1 pou\u017ei\u0165, patria zliatiny medi.<\/li>\n<\/ul>\n\n\n\n

              Obmedzenia<\/strong>:<\/p>\n\n\n\n

                \n
              • Drah\u0161ie, preto\u017ee sa pou\u017e\u00edvaj\u00fa diamantov\u00e9 odsadzova\u010de.<\/li>\n\n\n\n
              • Vy\u017eaduje ur\u010dit\u00e9 n\u00e1stroje a znalosti.<\/li>\n<\/ul>\n\n\n\n

                Vickersova sk\u00fa\u0161ka sa \u010dasto pou\u017e\u00edva v oddeleniach kontroly kvality a v\u00fdskumn\u00fdch laborat\u00f3ri\u00e1ch v odvetviach, kde je presnos\u0165 nevyhnutn\u00e1, ako napr\u00edklad pri v\u00fdrobe elektroniky.<\/p>\n\n\n\n

                Sk\u00fa\u0161ka tvrdosti pod\u013ea Rockwella<\/strong><\/h3>\n\n\n\n

                V priemyseln\u00fdch aplik\u00e1ci\u00e1ch sa Rockwellova sk\u00fa\u0161ka tvrdosti be\u017ene pou\u017e\u00edva na stanovenie tvrdosti kovov, napr\u00edklad medi. Sk\u00fa\u0161ka pozost\u00e1va z vtl\u00e1\u010dania hrotu do materi\u00e1lu a s\u00fa\u010dasn\u00e9ho za\u0165a\u017eenia. Existuj\u00fa r\u00f4zne Rockwellove stupnice, ale pri medi sa naj\u010dastej\u0161ie pou\u017e\u00edva stupnica Rockwell B (HRB). Norma ASTM E18 odpor\u00fa\u010da tento pr\u00edstup na testovanie ne\u017eelezn\u00fdch kovov.<\/p>\n\n\n\n

                Ako to funguje v pr\u00edpade medi<\/strong>:<\/p>\n\n\n\n

                  \n
                • Oce\u013eov\u00e1 gu\u013e\u00f4\u010dka sa vtla\u010d\u00ed do vzorky medi s vopred ur\u010den\u00fdm za\u0165a\u017een\u00edm.<\/li>\n\n\n\n
                • H\u013abka vtla\u010dku sa okam\u017eite zmeria a pou\u017eije sa na v\u00fdpo\u010det Rockwellovho \u010d\u00edsla tvrdosti (HRB).<\/li>\n\n\n\n
                • Sk\u00fa\u0161ka sa vykon\u00e1va r\u00fdchlo a nevy\u017eaduje presn\u00e9 meranie vtla\u010dku.<\/li>\n<\/ul>\n\n\n\n

                  V\u00fdhody<\/strong>:<\/p>\n\n\n\n

                    \n
                  • R\u00fdchle a jednoduch\u00e9 vykonanie.<\/li>\n\n\n\n
                  • \u0160iroko sa pou\u017e\u00edva v priemysle a poskytuje r\u00fdchly odhad tvrdosti.<\/li>\n<\/ul>\n\n\n\n

                    Obmedzenia<\/strong>:<\/p>\n\n\n\n

                      \n
                    • Menej presn\u00e9 pre m\u00e4k\u0161ie kovy, ako je me\u010f, ako Vickersova met\u00f3da.<\/li>\n\n\n\n
                    • Rockwellova stupnica B nie je zvy\u010dajne spo\u013eahliv\u00e1 pre extr\u00e9mne m\u00e4kk\u00e9 materi\u00e1ly.<\/li>\n<\/ul>\n\n\n\n

                      Tento pr\u00edstup sa be\u017ene pou\u017e\u00edva vo ve\u013ekos\u00e9riovej v\u00fdrobe na r\u00fdchlu kontrolu tvrdosti materi\u00e1lu, ktor\u00e1 zaru\u010duje, \u017ee me\u010f je vhodn\u00e1 pre ve\u013ek\u00e9 v\u00fdrobn\u00e9 oper\u00e1cie.<\/p>\n\n\n\n

                      Knoopova sk\u00fa\u0161ka tvrdosti<\/strong><\/h3>\n\n\n\n

                      \u010eal\u0161\u00edm pr\u00edstupom zalo\u017een\u00fdm na diamante je Knoopova sk\u00fa\u0161ka tvrdosti, ktor\u00e1 sa naj\u010dastej\u0161ie pou\u017e\u00edva pre ve\u013emi tenk\u00e9 materi\u00e1ly alebo povlaky. Pri Knoopovom teste sa pou\u017e\u00edva podlhovast\u00fd pyram\u00eddov\u00fd indentor, ktor\u00fd je vhodn\u00fd na hodnotenie tvrdosti mal\u00fdch, jemn\u00fdch materi\u00e1lov, ako s\u00fa meden\u00e9 f\u00f3lie.<\/p>\n\n\n\n

                      Ako to funguje pri medi<\/strong>:<\/p>\n\n\n\n

                        \n
                      • Podlhovast\u00fd koso\u0161tvorcov\u00fd diamantov\u00fd hrot sa zatla\u010d\u00ed do povrchu medi.<\/li>\n\n\n\n
                      • Knoopovo \u010d\u00edslo tvrdosti (KHN) sa ur\u010duje meran\u00edm d\u013a\u017eky v\u00fdsledn\u00e9ho odtla\u010dku pod mikroskopom.<\/li>\n<\/ul>\n\n\n\n

                        V\u00fdhody<\/strong>:<\/p>\n\n\n\n

                          \n
                        • V\u00fdnimo\u010dne presn\u00e9 pre mal\u00e9 a tenk\u00e9 meden\u00e9 vzorky.<\/li>\n\n\n\n
                        • Ide\u00e1lne na posudzovanie drobn\u00fdch vzoriek alebo n\u00e1terov.<\/li>\n<\/ul>\n\n\n\n

                          Obmedzenia<\/strong>:<\/p>\n\n\n\n

                            \n
                          • Potrebuje ur\u010dit\u00e9 vybavenie.<\/li>\n\n\n\n
                          • Trv\u00e1 dlh\u0161ie a je zlo\u017eitej\u0161\u00ed ako in\u00e9 pr\u00edstupy.<\/li>\n<\/ul>\n\n\n\n

                            T\u00e1to technika sa \u010dasto pou\u017e\u00edva vo v\u00fdskume v oblasti materi\u00e1lov\u00fdch vied, ke\u010f je potrebn\u00e9 presn\u00e9 testovanie v malom rozsahu, preto\u017ee je presn\u00e1.<\/p>\n\n\n\n

                            Ako vykona\u0165 test tvrdosti medi doma (alebo v z\u00e1kladnom laborat\u00f3riu)?<\/strong><\/h2>\n\n\n\n

                            Menej komplikovan\u00fa met\u00f3du m\u00f4\u017ee pou\u017ei\u0165 ka\u017ed\u00fd, kto chce vykona\u0165 jednoduch\u00fd test tvrdosti medi doma alebo na malom pracovisku. Piln\u00edkov\u00fd test, ktor\u00fd poskytuje pribli\u017en\u00fd odhad tvrdosti medi, bude hlavnou t\u00e9mou tejto diskusie.<\/p>\n\n\n\n

                            Sk\u00fa\u0161ka piln\u00edkom alebo po\u0161kriaban\u00edm<\/strong><\/h4>\n\n\n\n

                            Tento jednoduch\u00fd test zah\u0155\u0148a po\u0161kriabanie meden\u00e9ho povrchu kovov\u00fdm piln\u00edkom, aby sa zistilo, ako \u013eahko sa d\u00e1 ozna\u010di\u0165. Po\u0161kriabanie je pravdepodobnej\u0161ie na m\u00e4k\u0161\u00edch materi\u00e1loch.<\/p>\n\n\n\n

                            Postup<\/strong>:<\/p>\n\n\n\n

                              \n
                            1. Vyberte si kovov\u00fd piln\u00edk, ktor\u00fd je tvrd\u0161\u00ed ako me\u010f (napr. oce\u013e).<\/li>\n\n\n\n
                            2. Pok\u00faste sa po\u0161kriaba\u0165 povrch medi.<\/li>\n\n\n\n
                            3. Pozorujte, ako \u013eahko piln\u00edk zanech\u00e1va stopy:\n
                                \n
                              • Ak piln\u00edk \u013eahko po\u0161kriabe me\u010f, me\u010f je relat\u00edvne m\u00e4kk\u00e1.<\/li>\n\n\n\n
                              • Ak je \u0165a\u017ek\u00e9 vytvori\u0165 \u0161krabanec, me\u010f je tvrd\u0161ia.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

                                Interpret\u00e1cia v\u00fdsledkov testu tvrdosti medi<\/strong><\/h2>\n\n\n\n

                                \u010c\u00edsla z\u00edskan\u00e9 zo sk\u00fa\u0161ky tvrdosti predstavuj\u00fa odolnos\u0165 materi\u00e1lu vo\u010di vtl\u00e1\u010daniu. V pr\u00edpade medi sa tieto hodnoty m\u00f4\u017eu l\u00ed\u0161i\u0165 v z\u00e1vislosti od pou\u017eitej met\u00f3dy. Tu je stru\u010dn\u00fd n\u00e1vod na interpret\u00e1ciu v\u00fdsledkov:<\/p>\n\n\n\n

                                  \n
                                • Brinellovo \u010d\u00edslo tvrdosti (BHN<\/strong>) : Hodnota tvrdosti medi sa zvy\u010dajne pohybuje v rozmedz\u00ed od 35 do 70 BHN<\/strong>.<\/li>\n\n\n\n
                                • Vickersovo \u010d\u00edslo tvrdosti (VHN<\/strong>) : Me\u010f sa zvy\u010dajne pohybuje v rozmedz\u00ed 30 a\u017e 70 VHN<\/strong>.<\/li>\n\n\n\n
                                • Rockwellova stupnica B (HRB)<\/strong>: Tvrdos\u0165 medi sa zvy\u010dajne pohybuje medzi 40 a 60 HRB<\/strong>.<\/li>\n<\/ul>\n\n\n\n

                                  Faktory ovplyv\u0148uj\u00face v\u00fdsledky testu tvrdosti medi<\/strong><\/h2>\n\n\n\n
                                    \n
                                  • Zliatina medi<\/strong>: Zliatiny medi, ako napr\u00edklad mosadz alebo bronz, maj\u00fa v porovnan\u00ed s \u010distou me\u010fou r\u00f4zne \u00farovne tvrdosti.<\/li>\n\n\n\n
                                  • Povrchov\u00e1 \u00faprava<\/strong>: Drsn\u00fd povrch m\u00f4\u017ee vies\u0165 k nepresn\u00fdm \u00fadajom, preto je nevyhnutn\u00e9 povrch spr\u00e1vne pripravi\u0165.<\/li>\n\n\n\n
                                  • Met\u00f3da testovania<\/strong>: Zvolen\u00e1 met\u00f3da testovania ovplyvn\u00ed presnos\u0165 v\u00fdsledkov.<\/li>\n<\/ul>\n\n\n\n

                                    Be\u017en\u00e9 chyby, ktor\u00fdm sa treba vyhn\u00fa\u0165<\/strong><\/h2>\n\n\n\n
                                      \n
                                    • Nespr\u00e1vna pr\u00edprava povrchu<\/strong>: Uistite sa, \u017ee meden\u00fd povrch je hladk\u00fd a \u010dist\u00fd, aby ste dosiahli presn\u00e9 v\u00fdsledky.<\/li>\n\n\n\n
                                    • V\u00fdber nespr\u00e1vnej testovacej met\u00f3dy<\/strong>: Uistite sa, \u017ee ste vybrali vhodn\u00fa sk\u00fa\u0161ku pre hr\u00fabku vzorky medi a jej pou\u017eitie.<\/li>\n\n\n\n
                                    • Zanedbanie kalibr\u00e1cie<\/strong>: Pravideln\u00e1 kalibr\u00e1cia zariaden\u00ed na meranie tvrdosti je nevyhnutn\u00e1 na zachovanie presnosti.<\/li>\n<\/ul>\n\n\n\n

                                      Z\u00e1ver<\/strong><\/h2>\n\n\n\n

                                      Testovanie tvrdosti medi je ve\u013emi d\u00f4le\u017eit\u00e9 pre pochopenie jej vlastnost\u00ed a zaru\u010denie jej prijate\u013enosti pre r\u00f4zne pou\u017eitia. Pomocou spr\u00e1vneho postupu m\u00f4\u017eete vyhodnoti\u0165 vlastnosti medi a zabezpe\u010di\u0165, aby sp\u013a\u0148ala pr\u00edslu\u0161n\u00e9 krit\u00e9ri\u00e1. \u010ci u\u017e pracujete vo v\u00fdrobe alebo rob\u00edte projekty pre dom\u00e1cich majstrov, zvl\u00e1dnutie testovania tvrdosti medi je nevyhnutn\u00e9 na v\u00fdber spr\u00e1vneho materi\u00e1lu.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                      Me\u010f je univerz\u00e1lny a be\u017ene pou\u017e\u00edvan\u00fd priemyseln\u00fd kov. Me\u010f je v\u010faka svojej vodivosti a odolnosti vo\u010di kor\u00f3zii ve\u013emi d\u00f4le\u017eit\u00e1 pre elektrick\u00e9 rozvody a vodovodn\u00e9 potrubia. Testovanie tvrdosti je nevyhnutn\u00e9 na zabezpe\u010denie toho, aby me\u010f sp\u013a\u0148ala v\u00fdkonnostn\u00e9 \u0161pecifik\u00e1cie aplik\u00e1cie. Tvrdos\u0165 medi ovplyv\u0148uje jej trvanlivos\u0165, obrobite\u013enos\u0165 a environment\u00e1lne vlastnosti.<\/p>\n

                                      V tomto \u010dl\u00e1nku sa budeme zaobera\u0165 sp\u00f4sobom hodnotenia tvrdosti medi, d\u00f4vodmi jej v\u00fdznamu a presn\u00fdmi met\u00f3dami merania. T\u00edto odborn\u00edci na materi\u00e1lov\u00e9 vedy maj\u00fa viac ako desa\u0165ro\u010dn\u00e9 sk\u00fasenosti v oblasti metalurgie a testovania materi\u00e1lov.<\/p>\n","protected":false},"author":1,"featured_media":11059,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-11128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-sk"],"yoast_head":"\nAko otestova\u0165 tvrdos\u0165 medi? - ChansMachining<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chansmachining.com\/sk\/how-to-test-the-hardness-of-copper\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ako otestova\u0165 tvrdos\u0165 medi? - ChansMachining\" \/>\n<meta property=\"og:description\" content=\"Me\u010f je univerz\u00e1lny a be\u017ene pou\u017e\u00edvan\u00fd priemyseln\u00fd kov. 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