{"id":17861,"date":"2025-03-09T13:30:22","date_gmt":"2025-03-09T05:30:22","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=17861"},"modified":"2026-10-08T21:05:09","modified_gmt":"2026-10-08T13:05:09","slug":"die-casting-porosity","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/sk\/blog\/die-casting-porosity\/","title":{"rendered":"P\u00f3rovitos\u0165 pri tlakovom liat\u00ed: pr\u00ed\u010diny a rie\u0161enia pre kvalitnej\u0161ie diely"},"content":{"rendered":"<p><span style=\"font-size: 16px; font-weight: 500;\">Tlakov\u00e9 liatie je proces tvarovania kovov, pri ktorom sa roztaven\u00fd kov vstrekuje do opakovane pou\u017eite\u013en\u00fdch foriem a vytv\u00e1ra presn\u00e9, detailn\u00e9 s\u00fa\u010diastky.<\/span><\/p>\n<p>Poskytuje vynikaj\u00facu rozmerov\u00fa presnos\u0165, hladk\u00fd povrch a zlo\u017eit\u00e9 tvary, ktor\u00e9 by sa in\u00fdmi technikami vyr\u00e1bali \u0165a\u017eko.<\/p>\n<p>Proces sa za\u010d\u00edna pr\u00edpravou oce\u013eovej formy, naz\u00fdvanej odlievacia forma. Tvoria ju dve polovice, ktor\u00e9 sa spoja a vytvoria dutinu v tvare hotovej s\u00fa\u010diastky.<\/p>\n<p>Na za\u010diatku procesu sa forma uzavrie a upne ve\u013ekou silou.<\/p>\n<p>Roztaven\u00fd kov sa potom pod vysok\u00fdm tlakom vstrekne do formy. Ve\u013emi r\u00fdchlo vypln\u00ed cel\u00fa dutinu, \u010do umo\u017e\u0148uje vyr\u00e1ba\u0165 detailn\u00e9 s\u00fa\u010diastky s tenk\u00fdmi stenami.<\/p>\n<p>Po stuhnut\u00ed kovu sa forma otvor\u00ed a odliatok sa vyberie. Proces sa r\u00fdchlo opakuje a umo\u017e\u0148uje vyrobi\u0165 stovky rovnak\u00fdch s\u00fa\u010diastok za hodinu.<\/p>\n<h2>\u010co je p\u00f3rovitos\u0165 pri tlakovom liat\u00ed?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-704\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3.jpg\" alt=\"Sch\u00e9ma troch typov p\u00f3rovitosti: slep\u00e9 p\u00f3ry, priechodn\u00e9 p\u00f3ry a \u00faplne uzavret\u00e9 p\u00f3ry, s opisom polohy a \u00fa\u010dinkov.\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Vysok\u00e1 r\u00fdchlos\u0165 tlakov\u00e9ho liatia sp\u00f4sobuje, \u017ee ur\u010ditej miere p\u00f3rovitosti sa takmer ned\u00e1 vyhn\u00fa\u0165.<\/p>\n<p>P\u00f3rovitos\u0165 ozna\u010duje otvory, dutiny alebo vzduchov\u00e9 kapsy, ktor\u00e9 vznikaj\u00fa vo vn\u00fatri alebo na povrchu tlakov\u00e9ho odliatku. M\u00f4\u017eu ma\u0165 podobu drobn\u00fdch mikroskopick\u00fdch p\u00f3rov a\u017e po v\u00e4\u010d\u0161ie vidite\u013en\u00e9 dutiny.<\/p>\n<p>Niekedy sa prejavuje mal\u00fdmi priehlbinami na povrchu alebo sa zist\u00ed vo vn\u00fatri po\u010das sk\u00fa\u0161ania.<\/p>\n<p>P\u00f3rovitos\u0165 si predstavte ako ne\u017eiaduce priestory v kove, ktor\u00fd by mal by\u0165 pevn\u00fd. Tieto dutiny sa m\u00f4\u017eu vyskytova\u0165 v r\u00f4znych podob\u00e1ch:<\/p>\n<ul>\n<li><strong>Povrchov\u00e1 p\u00f3rovitos\u0165<\/strong>: Vidite\u013en\u00e1 na vonkaj\u0161om povrchu s\u00fa\u010diastky<\/li>\n<li><strong>Vn\u00fatorn\u00e1 p\u00f3rovitos\u0165<\/strong>: Skryt\u00e1 v \u0161trukt\u00fare s\u00fa\u010diastky<\/li>\n<li><strong>Plynov\u00e1 p\u00f3rovitos\u0165<\/strong>: Vznik\u00e1 v d\u00f4sledku zachyten\u00fdch plynov<\/li>\n<li><strong>Zmr\u0161\u0165ovacia p\u00f3rovitos\u0165<\/strong>: Vznik\u00e1 pri ochladzovan\u00ed a zmr\u0161\u0165ovan\u00ed kovu<\/li>\n<\/ul>\n<p>P\u00f3rovitos\u0165 je pri tlakovom liat\u00ed pomerne be\u017en\u00e1. V\u00e4\u010d\u0161ina v\u00fdrobcov akceptuje ur\u010dit\u00fa mieru vn\u00fatornej p\u00f3rovitosti, no nadmern\u00e1 alebo povrchov\u00e1 p\u00f3rovitos\u0165 m\u00f4\u017ee znehodnoti\u0165 s\u00fa\u010diastku.<\/p>\n<h3>Pr\u00ed\u010diny p\u00f3rovitosti pri tlakovom liat\u00ed<\/h3>\n<p>P\u00f3rovitos\u0165 pri tlakovom liat\u00ed sp\u00f4sobuje viacero faktorov. Hlavnou pr\u00ed\u010dinou je zachyten\u00fd vzduch alebo plyn po\u010das vstrekovania kovu. Ke\u010f roztaven\u00fd kov r\u00fdchlo vtek\u00e1 do formy, m\u00f4\u017ee strhn\u00fa\u0165 vzduch, ktor\u00fd nem\u00e1 kadia\u013e unikn\u00fa\u0165.<\/p>\n<p>P\u00f3rovitos\u0165 sp\u00f4sobuje aj nedostato\u010dn\u00e1 regul\u00e1cia teploty. Pri nerovnomernej teplote odlievania kov tuhne r\u00f4znou r\u00fdchlos\u0165ou a vznikaj\u00fa dutiny.<\/p>\n<p>Medzi \u010fal\u0161ie be\u017en\u00e9 pr\u00ed\u010diny patria:<\/p>\n<ul>\n<li>Nedostato\u010dn\u00e9 odvzdu\u0161nenie v kon\u0161trukcii formy<\/li>\n<li>Pr\u00edli\u0161 ve\u013ea maziva na povrchu formy<\/li>\n<li>Nespr\u00e1vne navrhnut\u00e9 vtoky alebo vtokov\u00e1 s\u00fastava<\/li>\n<li>Nespr\u00e1vna r\u00fdchlos\u0165 vstrekovania kovu<\/li>\n<li>Turbulentn\u00fd tok kovu po\u010das plnenia<\/li>\n<\/ul>\n<h2>Ako predch\u00e1dza\u0165 nadmernej p\u00f3rovitosti<\/h2>\n<h3>Kon\u0161truk\u010dn\u00e9 h\u013eadisk\u00e1<\/h3>\n<p>Za\u010dnite n\u00e1vrhom formy, ktor\u00fd podporuje plynul\u00fd tok kovu. Vyh\u00fdbajte sa ostr\u00fdm rohom a n\u00e1hlym zmen\u00e1m hr\u00fabky, v ktor\u00fdch sa m\u00f4\u017ee zachyt\u00e1va\u0165 vzduch alebo vznikn\u00fa\u0165 turbulencia.<\/p>\n<p>Do <a href=\"https:\/\/moldiecasting.com\/sk\/die-casting-mold-design\/\">kon\u0161trukcie formy<\/a>zahr\u0148te spr\u00e1vne dimenzovan\u00e9 prepadov\u00e9 komory a odvzdu\u0161\u0148ovacie otvory. Umo\u017enia \u00fanik plynov po\u010das odlievania a zn\u00ed\u017eia mno\u017estvo zachyten\u00fdch vzduchov\u00fdch bubl\u00edn.<\/p>\n<p>Zv\u00e1\u017ete v\u00e1kuov\u00fa podporu syst\u00e9mu tlakov\u00e9ho liatia. Pom\u00e1ha odstr\u00e1ni\u0165 vzduch z dutiny formy e\u0161te pred vstupom roztaven\u00e9ho kovu a v\u00fdrazne obmedzuje plynov\u00fa p\u00f3rovitos\u0165.<\/p>\n<p>Vtokov\u00fa s\u00fastavu navrhnite tak, aby usmer\u0148ovala kov a tla\u010dila plyny k odvzdu\u0161\u0148ovac\u00edm otvorom namiesto toho, aby ich zachyt\u00e1vala.<\/p>\n<h3>V\u00fdber materi\u00e1lu<\/h3>\n<p>Vyberte <a href=\"https:\/\/moldiecasting.com\/sk\/blog\/aluminum-die-casting-machine\/\">hlin\u00edkov\u00e9 zliatiny<\/a> s ni\u017e\u0161ou schopnos\u0165ou absorbova\u0165 plyny, ak je to mo\u017en\u00e9. Niektor\u00e9 zliatiny prirodzene odol\u00e1vaj\u00fa absorpcii vod\u00edka, \u010d\u00edm sa zni\u017euje riziko plynovej p\u00f3rovitosti.<\/p>\n<p>Pred odlievan\u00edm kov d\u00f4kladne odplynite.<\/p>\n<p>Materi\u00e1ly skladujte v kontrolovanom prostred\u00ed, aby neabsorbovali vlhkos\u0165. Vlhkos\u0165 m\u00f4\u017ee po\u010das tavenia vnies\u0165 do zliatiny vod\u00edk.<\/p>\n<p>Na odstr\u00e1nenie ne\u010dist\u00f4t sp\u00f4sobuj\u00facich p\u00f3rovitos\u0165 mo\u017eno pou\u017ei\u0165 aj tavidl\u00e1. \u010cist\u00fd kov prin\u00e1\u0161a \u010distej\u0161ie odliatky s men\u0161\u00edm po\u010dtom ch\u00fdb.<\/p>\n<h3>Regul\u00e1cia parametrov procesu<\/h3>\n<p>Nastavte spr\u00e1vnu teplotu kovu aj formy. Pri pr\u00edli\u0161 vysokej teplote sa plyny rozp\u00ednaj\u00fa; pri pr\u00edli\u0161 n\u00edzkej kov stuhne sk\u00f4r, ne\u017e plyny unikn\u00fa.<\/p>\n<p>Po\u010das tuhnutia udr\u017eiavajte st\u00e1ly pr\u00edtla\u010dn\u00fd tlak. Pom\u00e1ha predch\u00e1dza\u0165 zmr\u0161\u0165ovacej p\u00f3rovitosti t\u00fdm, \u017ee dopravuje \u010fal\u0161\u00ed kov do miest, v ktor\u00fdch by inak vznikli dutiny.<\/p>\n<p>Sledujte \u010dasy cyklu a r\u00fdchlos\u0165 chladenia. Spr\u00e1vne chladenie poskytne plynom \u010das na \u00fanik pred \u00fapln\u00fdm stuhnut\u00edm kovu.<\/p>\n<h2>Detekcia a meranie p\u00f3rovitosti<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-704\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3.jpg\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Die-Casting-Porosity-3-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Na odhalenie skryt\u00fdch dut\u00edn existuje viacero met\u00f3d, od jednoduchej vizu\u00e1lnej kontroly a\u017e po pokro\u010dil\u00e9 zobrazovacie technol\u00f3gie.<\/p>\n<h3>Nede\u0161trukt\u00edvne sk\u00fa\u0161obn\u00e9 met\u00f3dy<\/h3>\n<p>R\u00f6ntgenov\u00e1 kontrola je jedn\u00fdm z najbe\u017enej\u0161\u00edch sp\u00f4sobov, ako zisti\u0165 p\u00f3rovitos\u0165 bez po\u0161kodenia s\u00fa\u010diastok. Na sn\u00edmkach sa vn\u00fatorn\u00e9 dutiny zobrazuj\u00fa ako tmav\u0161ie \u0161kvrny na pozad\u00ed kovu.<\/p>\n<p><em>Viacero s\u00fa\u010diastok mo\u017eno r\u00fdchlo skontrolova\u0165 bez toho, aby ste ich museli rozreza\u0165.<\/em><\/p>\n<p>CT skenovanie (po\u010d\u00edta\u010dov\u00e1 tomografia) poskytuje podrobnej\u0161\u00ed 3D poh\u013ead na vn\u00fatorn\u00fa \u0161trukt\u00faru. T\u00e1to pokro\u010dil\u00e1 met\u00f3da presne zobraz\u00ed polohu p\u00f3rovitosti a umo\u017en\u00ed presne zmera\u0165 jej objem.<\/p>\n<p><em>CT skenovanie je obzvl\u00e1\u0161\u0165 u\u017eito\u010dn\u00e9 pri zlo\u017eit\u00fdch s\u00fa\u010diastkach, pri ktor\u00fdch z\u00e1le\u017e\u00ed na polohe p\u00f3rov.<\/em><\/p>\n<p>Ultrazvukov\u00e1 sk\u00fa\u0161ka vyu\u017e\u00edva zvukov\u00e9 vlny na detekciu nespojitost\u00ed v kovov\u00fdch s\u00fa\u010diastkach. Ke\u010f vlny narazia na dutinu, odrazia sa odli\u0161n\u00fdm sp\u00f4sobom.<\/p>\n<p><em>T\u00e1to met\u00f3da je vhodn\u00e1 na odha\u013eovanie v\u00e4\u010d\u0161\u00edch zhlukov p\u00f3rovitosti.<\/em><\/p>\n<h3>Kvantitat\u00edvne pos\u00fadenie p\u00f3rovitosti<\/h3>\n<p>Meranie mno\u017estva p\u00f3rovitosti pom\u00e1ha ur\u010di\u0165, \u010di s\u00fa\u010diastka sp\u013a\u0148a normy kvality. Archimedova met\u00f3da porovn\u00e1va hmotnos\u0165 s\u00fa\u010diastky na vzduchu a v kvapaline a vypo\u010d\u00edtava rozdiel hustoty sp\u00f4soben\u00fd vn\u00fatorn\u00fdmi dutinami.<\/p>\n<p><em>T\u00fdmto jednoduch\u00fdm postupom sa zist\u00ed celkov\u00fd percentu\u00e1lny podiel p\u00f3rovitosti.<\/em><\/p>\n<p>Metalografia zah\u0155\u0148a rozrezanie vzorky, vyle\u0161tenie povrchu a jeho presk\u00famanie pod mikroskopom. Na reze mo\u017eno zmera\u0165 ve\u013ekos\u0165 a rozlo\u017eenie p\u00f3rov.<\/p>\n<p><em>T\u00e1to met\u00f3da poskytuje podrobn\u00e9 \u00fadaje o konkr\u00e9tnych oblastiach, ale vzorka sa pri nej zni\u010d\u00ed.<\/em><\/p>\n<p>Softv\u00e9r na anal\u00fdzu obrazu dok\u00e1\u017ee kvantifikova\u0165 p\u00f3rovitos\u0165 zo sn\u00edmok RTG alebo CT. Automaticky vypo\u010d\u00edta percento, ve\u013ekos\u0165 a rozlo\u017eenie dut\u00edn.<\/p>\n<h2>Rie\u0161enie probl\u00e9mov s p\u00f3rovitos\u0165ou<\/h2>\n<h3>Oprava p\u00f3rovit\u00fdch odliatkov<\/h3>\n<p>Odliatky skontrolujte pri zv\u00e4\u010d\u0161en\u00ed 5-10x, aby ste spr\u00e1vne ur\u010dili probl\u00e9m s p\u00f3rovitos\u0165ou. Pom\u00f4\u017ee v\u00e1m to rozl\u00ed\u0161i\u0165 plynov\u00fa p\u00f3rovitos\u0165 (okr\u00fahle bubliny) od zmr\u0161\u0165ovacej p\u00f3rovitosti (nepravideln\u00e9 dutiny).<\/p>\n<p>Pri men\u0161\u00edch probl\u00e9moch s p\u00f3rovitos\u0165ou je \u00fa\u010dinn\u00e1 impregn\u00e1cia. Dutiny sa vyplnia tesniacim prostriedkom a s\u00fa\u010diastky sa stan\u00fa tlakovotesn\u00fdmi. Tento postup sa be\u017ene pou\u017e\u00edva pri dieloch, ktor\u00e9 musia zadr\u017eiava\u0165 kvapaliny alebo plyny.<\/p>\n<p>Vn\u00fatorn\u00fa p\u00f3rovitos\u0165 mo\u017eno rie\u0161i\u0165 aj sekund\u00e1rnymi oper\u00e1ciami, napr\u00edklad izostatick\u00fdm lisovan\u00edm za tepla (HIP). Pri tomto procese sa vn\u00fatorn\u00e9 dutiny stl\u00e1\u010daj\u00fa a odstra\u0148uj\u00fa pomocou vysok\u00e9ho tlaku a teploty.<\/p>\n<h2>Vyberte si Moldiecasting pre svoj \u010fal\u0161\u00ed projekt<\/h2>\n<p>M\u00e1te probl\u00e9my s p\u00f3rovitos\u0165ou tlakov\u00fdch odliatkov? Plynov\u00e1 a zmr\u0161\u0165ovacia p\u00f3rovitos\u0165 \u010di dutiny sp\u00f4soben\u00e9 zachyten\u00fdm vzduchom alebo nerovnomern\u00fdm tuhnut\u00edm m\u00f4\u017eu naru\u0161i\u0165 kon\u0161truk\u010dn\u00fa integritu odliatkov, zhor\u0161i\u0165 ich mechanick\u00e9 vlastnosti a zv\u00fd\u0161i\u0165 riziko kor\u00f3zie. V <a href=\"https:\/\/moldiecasting.com\/sk\/\">Moldiecasting<\/a>sa \u0161pecializujeme na pokro\u010dil\u00e9 rie\u0161enia procesov tlakov\u00e9ho liatia, ktor\u00e9 reguluj\u00fa p\u00f3rovitos\u0165 a prin\u00e1\u0161aj\u00fa bezchybn\u00e9 v\u00fdsledky.<\/p>\n<p>V\u010faka optimaliz\u00e1cii toku roztaven\u00e9ho kovu, vysokotlakov\u00e9ho vstrekovania a parametrov presn\u00fdch strojov minimalizujeme zmr\u0161\u0165ovaciu p\u00f3rovitos\u0165 a odstra\u0148ujeme vzduch zachyten\u00fd po\u010das odlievania. \u00dapravou hr\u00fabky stien, v\u00fdberu zliatiny (vr\u00e1tane zinku a hor\u010d\u00edka) a riadenia tuhnutia rie\u0161ime pr\u00ed\u010diny p\u00f3rovitosti v ka\u017edej f\u00e1ze. Pri kritick\u00fdch aplik\u00e1ci\u00e1ch pon\u00fakame v\u00e1kuov\u00fa impregn\u00e1ciu alebo pretlakov\u00e9 techniky na utesnenie p\u00f3rov a zv\u00fd\u0161enie odolnosti, a to aj po obr\u00e1ban\u00ed.<\/p>\n<p>Pre\u010do sa uspokoji\u0165 s <a href=\"https:\/\/moldiecasting.com\/sk\/blog\/die-casting-defects-and-solutions\/\">chybami<\/a>? Vyberte si n\u00e1kladovo efekt\u00edvne a kvalitn\u00e9 odlievanie kovov, ktor\u00e9 uprednost\u0148uje kontrolu kvality a maximalizuje v\u00fdkon s\u00fa\u010diastok. Kontaktujte n\u00e1s e\u0161te dnes na <a href=\"https:\/\/moldiecasting.com\/sk\/\" target=\"_blank\" rel=\"noopener noreferrer\">moldiecasting<\/a>\u00a0a porozpr\u00e1vajte sa s nami o impregn\u00e1cii v\u00e1\u0161ho \u010fal\u0161ieho projektu \u2013 ka\u017ed\u00e1 odliata s\u00fa\u010diastka tak bude sp\u013a\u0148a\u0165 najvy\u0161\u0161ie \u0161tandardy presnosti a spo\u013eahlivosti. Preme\u0148me probl\u00e9my s p\u00f3rovitos\u0165ou na dokonal\u00e9 rie\u0161enia!<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>Ak\u00e9 be\u017en\u00e9 typy p\u00f3rovitosti sa vyskytuj\u00fa v kovov\u00fdch odliatkoch?<\/h3>\n<p>Pri tlakov\u00fdch odliatkoch sa zvy\u010dajne vyskytuj\u00fa tri hlavn\u00e9 typy p\u00f3rovitosti. Plynov\u00e1 p\u00f3rovitos\u0165 vznik\u00e1, ke\u010f sa po\u010das tuhnutia v kove zachytia plyny a vytvoria mal\u00e9 okr\u00fahle dutiny.<\/p>\n<p>Zmr\u0161\u0165ovacia p\u00f3rovitos\u0165 vznik\u00e1 pri nerovnomernom ochladzovan\u00ed kovu. V hrub\u0161\u00edch \u010dastiach sa po\u010das zmr\u0161\u0165ovania vytv\u00e1raj\u00fa dutiny nepravideln\u00e9ho tvaru.<\/p>\n<p>Medzidendritick\u00e1 p\u00f3rovitos\u0165 sa tvor\u00ed medzi dendritick\u00fdmi \u0161trukt\u00farami po\u010das kry\u0161taliz\u00e1cie kovu, \u010dasto v oblastiach s pomal\u0161\u00edm chladen\u00edm.<\/p>\n<h3>Ak\u00e9 \u00farovne p\u00f3rovitosti odliatkov stanovuje norma ASTM E505?<\/h3>\n<p>Norma ASTM E505 vyu\u017e\u00edva referen\u010dn\u00e9 r\u00e1diogramy na klasifik\u00e1ciu \u00farovn\u00ed p\u00f3rovitosti na stupnici od 1 do 7. \u00darove\u0148 1 ozna\u010duje minim\u00e1lnu p\u00f3rovitos\u0165, zatia\u013e \u010do \u00farove\u0148 7 predstavuje z\u00e1va\u017en\u00fa p\u00f3rovitos\u0165.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tlakov\u00e9 liatie je proces tvarovania kovov, pri ktorom sa roztaven\u00fd kov vstrekuje do opakovane pou\u017eite\u013en\u00fdch foriem a vytv\u00e1ra presn\u00e9, detailn\u00e9 s\u00fa\u010diastky. Poskytuje vynikaj\u00facu rozmerov\u00fa presnos\u0165, hladk\u00fd povrch a zlo\u017eit\u00e9 tvary, ktor\u00e9 by sa in\u00fdmi technikami vyr\u00e1bali \u0165a\u017eko. Proces sa za\u010d\u00edna pr\u00edpravou oce\u013eovej formy, naz\u00fdvanej odlievacia forma. Tvoria ju dve polovice, ktor\u00e9 sa spoja a vytvoria [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":18479,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"P\u00f3rovitos\u0165 pri tlakovom liat\u00ed: pr\u00ed\u010diny a rie\u0161enia pre kvalitnej\u0161ie diely","_seopress_titles_desc":"Spoznajte pr\u00ed\u010diny p\u00f3rovitosti pri tlakovom liat\u00ed, mo\u017enosti prevencie, detekcie a opravy p\u00f3rovit\u00fdch odliatkov.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"iawp_total_views":1,"footnotes":""},"categories":[189],"tags":[],"class_list":["post-17861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17861","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/comments?post=17861"}],"version-history":[{"count":6,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17861\/revisions"}],"predecessor-version":[{"id":20592,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/posts\/17861\/revisions\/20592"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/media\/18479"}],"wp:attachment":[{"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/media?parent=17861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/categories?post=17861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moldiecasting.com\/sk\/wp-json\/wp\/v2\/tags?post=17861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}