{"id":23495,"date":"2025-03-31T13:43:24","date_gmt":"2025-03-31T05:43:24","guid":{"rendered":"https:\/\/moldiecasting.com\/?p=23495"},"modified":"2026-10-09T02:21:37","modified_gmt":"2026-10-08T18:21:37","slug":"low-pressure-die-casting","status":"publish","type":"post","link":"https:\/\/moldiecasting.com\/cs\/blog\/low-pressure-die-casting\/","title":{"rendered":"N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed: pr\u016fvodce efektivn\u00edm tv\u00e1\u0159en\u00edm kov\u016f"},"content":{"rendered":"<h2><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-710\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-3.jpg\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-3.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-3-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-3-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-3-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/h2>\n<h2>P\u0159ehled n\u00edzkotlak\u00e9ho tlakov\u00e9ho lit\u00ed<\/h2>\n<p><a href=\"https:\/\/moldiecasting.com\/cs\/blog\/high-pressure-die-casting\/\">N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed<\/a> je proces tv\u00e1\u0159en\u00ed kov\u016f, p\u0159i n\u011bm\u017e \u0159\u00edzen\u00fd tlak pln\u00ed formy roztaven\u00fdm kovem a umo\u017e\u0148uje vyr\u00e1b\u011bt kvalitn\u00ed d\u00edly. Ve srovn\u00e1n\u00ed s tradi\u010dn\u00edmi metodami odl\u00e9v\u00e1n\u00ed nab\u00edz\u00ed v\u00fdhody z hlediska kvality a p\u0159esnosti.<\/p>\n<h3>Definice a principy<\/h3>\n<p>N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed (LPDC) vyu\u017e\u00edv\u00e1 tlak k vytla\u010den\u00ed roztaven\u00e9ho kovu vzh\u016fru do dutiny formy. Pec s roztaven\u00fdm kovem pod tlakem se nach\u00e1z\u00ed pod formou. P\u0159i zv\u00fd\u0161en\u00ed tlaku (obvykle 0,2\u20131,0 bar) je kov vytla\u010den p\u0159\u00edvodn\u00ed trubic\u00ed nahoru do formy.<\/p>\n<p>Kov pln\u00ed formu pomalu a rovnom\u011brn\u011b, tak\u017ee vznik\u00e1 m\u00e9n\u011b vad ne\u017e u jin\u00fdch metod lit\u00ed. Po ztuhnut\u00ed kovu se tlak uvoln\u00ed a nespot\u0159ebovan\u00fd kov ste\u010de zp\u011bt do pece.<\/p>\n<h3>Historie a v\u00fdvoj<\/h3>\n<p>N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed se objevilo v polovin\u011b 20. stolet\u00ed, kdy\u017e v\u00fdrobci hledali \u00fa\u010dinn\u011bj\u0161\u00ed metody odl\u00e9v\u00e1n\u00ed. Jeho po\u010d\u00e1te\u010dn\u00ed v\u00fdvoj v\u00fdrazn\u011b podpo\u0159il automobilov\u00fd pr\u016fmysl, kter\u00fd hledal zp\u016fsoby v\u00fdroby leh\u010d\u00edch a pevn\u011bj\u0161\u00edch sou\u010d\u00e1st\u00ed.<\/p>\n<p>Proces se roz\u0161\u00ed\u0159il v 50. a 60. letech 20. stolet\u00ed, kdy jej automobilky za\u010daly pou\u017e\u00edvat pro kola a sou\u010d\u00e1sti motor\u016f.<\/p>\n<p>Postupn\u00e9 zdokonalov\u00e1n\u00ed syst\u00e9m\u016f \u0159\u00edzen\u00ed tlaku, konstrukce forem a kovov\u00fdch slitin zv\u00fd\u0161ilo spolehlivost a v\u0161estrannost procesu. Po\u010d\u00edta\u010dov\u00e9 modelov\u00e1n\u00ed dnes pom\u00e1h\u00e1 optimalizovat pln\u011bn\u00ed a chlazen\u00ed formy.<\/p>\n<h2>Za\u0159\u00edzen\u00ed a stroje<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-711\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting.jpg\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Kvalitn\u00ed v\u00fdsledky n\u00edzkotlak\u00e9ho tlakov\u00e9ho lit\u00ed vy\u017eaduj\u00ed <a href=\"https:\/\/moldiecasting.com\/cs\/blog\/aluminum-die-casting-machine\/\">specializovan\u00e9 za\u0159\u00edzen\u00ed<\/a>.<\/p>\n<h3>Konstrukce a materi\u00e1ly forem<\/h3>\n<p>Formy pro n\u00edzkotlak\u00e9 lit\u00ed se obvykle vyr\u00e1b\u011bj\u00ed z n\u00e1strojov\u00e9 oceli H13, kter\u00e1 v\u00fdborn\u011b odol\u00e1v\u00e1 teplu a je trvanliv\u00e1. Maj\u00ed slo\u017eit\u00e9 chladic\u00ed kan\u00e1ly, kter\u00e9 \u0159\u00edd\u00ed rychlost tuhnut\u00ed a pom\u00e1haj\u00ed p\u0159edch\u00e1zet vad\u00e1m, jako jsou p\u00f3rovitost a smr\u0161\u0165ov\u00e1n\u00ed.<\/p>\n<p>Konstrukce forem obvykle zahrnuje:<\/p>\n<ul>\n<li>V\u00edce dutin pro vy\u0161\u0161\u00ed v\u00fdrobn\u00ed v\u00fdkon<\/li>\n<li>Pe\u010dliv\u011b rozm\u00edst\u011bn\u00e9 odvzdu\u0161\u0148ovac\u00ed kan\u00e1ly pro \u00fanik zachycen\u00fdch plyn\u016f<\/li>\n<li>Vyhazovac\u00ed kol\u00edky pro hladk\u00e9 vyjmut\u00ed d\u00edlu<\/li>\n<\/ul>\n<p>Formy mus\u00ed odol\u00e1vat opakovan\u00fdm cykl\u016fm zah\u0159\u00edv\u00e1n\u00ed a chlazen\u00ed bez prask\u00e1n\u00ed.<\/p>\n<p>N\u011bkte\u0159\u00ed v\u00fdrobci nyn\u00ed vyu\u017e\u00edvaj\u00ed <a href=\"https:\/\/moldiecasting.com\/cs\/how-we-work\/\">3D tisk<\/a> k v\u00fdrob\u011b forem s konformn\u00edmi chladic\u00edmi kan\u00e1ly, kter\u00e9 kop\u00edruj\u00ed obrysy d\u00edlu. Zvy\u0161uje se tak \u00fa\u010dinnost chlazen\u00ed a zkracuje v\u00fdrobn\u00ed cyklus.<\/p>\n<h3>Pece a udr\u017eovac\u00ed syst\u00e9my<\/h3>\n<p>Pecn\u00ed syst\u00e9m je j\u00e1drem ka\u017ed\u00e9ho provozu n\u00edzkotlak\u00e9ho tlakov\u00e9ho lit\u00ed. Obvykle se pou\u017e\u00edvaj\u00ed elektrick\u00e9 odporov\u00e9 pece, kter\u00e9 p\u0159esn\u011b \u0159\u00edd\u00ed teplotu roztaven\u00e9ho kovu.<\/p>\n<p>V\u011bt\u0161ina modern\u00edch syst\u00e9m\u016f zahrnuje:<\/p>\n<ul>\n<li>Udr\u017eovac\u00ed pece s kapacitou 300\u20132000 kg<\/li>\n<li>Syst\u00e9my \u0159\u00edzen\u00ed teploty (p\u0159esnost \u00b15 \u00b0C)<\/li>\n<li>Tlakov\u00e9 komory, kter\u00e9 vytla\u010duj\u00ed kov vzh\u016fru do formy<\/li>\n<\/ul>\n<p>Pec je s formou spojena stoupac\u00ed trubic\u00ed, obvykle z keramick\u00e9ho materi\u00e1lu odoln\u00e9ho v\u016f\u010di vysok\u00fdm teplot\u00e1m. Trubic\u00ed se roztaven\u00fd kov p\u0159iv\u00e1d\u00ed z pece do dutiny formy.<\/p>\n<p>N\u011bkter\u00e9 syst\u00e9my maj\u00ed dv\u011b komory \u2013 jednu tavic\u00ed a jednu udr\u017eovac\u00ed. Umo\u017e\u0148uj\u00ed tak l\u00e9pe \u0159\u00eddit kvalitu kovu a z\u00e1rove\u0148 zachovat plynulou v\u00fdrobu.<\/p>\n<h3>\u0158\u00eddic\u00ed a monitorovac\u00ed syst\u00e9my<\/h3>\n<p>Modern\u00ed stroje pro n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed maj\u00ed sofistikovan\u00e9 \u0159\u00eddic\u00ed syst\u00e9my, kter\u00e9 sleduj\u00ed v\u0161echny aspekty procesu.<\/p>\n<p>Mezi kl\u00ed\u010dov\u00e9 \u0159\u00eddic\u00ed funkce pat\u0159\u00ed:<\/p>\n<ul>\n<li>Programovateln\u00e9 tlakov\u00e9 profily (obvykle 0,2\u20131,0 bar)<\/li>\n<li>Monitorov\u00e1n\u00ed teploty v re\u00e1ln\u00e9m \u010dase na v\u00edce m\u00edstech<\/li>\n<li>Automatizovan\u00e9 syst\u00e9my maz\u00e1n\u00ed formy<\/li>\n<li>\u0158\u00edzen\u00ed na\u010dasov\u00e1n\u00ed cyklu<\/li>\n<\/ul>\n<p>V\u011bt\u0161ina stroj\u016f pou\u017e\u00edv\u00e1 syst\u00e9my PLC (programovateln\u00fd logick\u00fd automat) s dotykov\u00fdm rozhran\u00edm. Umo\u017e\u0148uj\u00ed ukl\u00e1dat a na\u010d\u00edtat nastaven\u00ed pro r\u016fzn\u00e9 d\u00edly.<\/p>\n<p>N\u011bkter\u00e9 pokro\u010dil\u00e9 syst\u00e9my dokonce vyu\u017e\u00edvaj\u00ed AI k optimalizaci parametr\u016f na z\u00e1klad\u011b p\u0159edchoz\u00edch v\u00fdrobn\u00edch s\u00e9ri\u00ed.<\/p>\n<h2>Parametry a optimalizace procesu<\/h2>\n<p>\u00dasp\u011b\u0161n\u00e9 n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed z\u00e1vis\u00ed na pe\u010dliv\u00e9 kontrole n\u011bkolika kl\u00ed\u010dov\u00fdch prom\u011bnn\u00fdch procesu. Spr\u00e1vn\u00e1 kombinace tlaku, teploty a zp\u016fsobu pln\u011bn\u00ed p\u0159\u00edmo ovliv\u0148uje kvalitu v\u00fdsledn\u00fdch odlitk\u016f i efektivitu v\u00fdroby.<\/p>\n<h3>\u0158\u00edzen\u00ed a regulace tlaku<\/h3>\n<p>Typick\u00fd tlak v tomto procesu se pohybuje mezi 0,3 a 1,5 bar, co\u017e je ve srovn\u00e1n\u00ed s jin\u00fdmi metodami odl\u00e9v\u00e1n\u00ed velmi m\u00e1lo.<\/p>\n<p>Proces obvykle zahrnuje n\u011bkolik tlakov\u00fdch f\u00e1z\u00ed:<\/p>\n<ul>\n<li><strong>V\u00fdtla\u010dn\u00fd tlak<\/strong>: po\u010d\u00e1te\u010dn\u00ed tlak, kter\u00fd vytla\u010d\u00ed roztaven\u00fd kov vzh\u016fru<\/li>\n<li><strong>Doba v\u00fdtlaku<\/strong>: jak dlouho p\u016fsob\u00ed po\u010d\u00e1te\u010dn\u00ed tlak<\/li>\n<li><strong>Plnic\u00ed tlak<\/strong>: tlak p\u016fsob\u00edc\u00ed p\u0159i pln\u011bn\u00ed formy<\/li>\n<li><strong>Doba pln\u011bn\u00ed<\/strong>: jak dlouho se udr\u017euje plnic\u00ed tlak<\/li>\n<\/ul>\n<p>Tyto parametry je t\u0159eba pe\u010dliv\u011b upravit podle konkr\u00e9tn\u00ed geometrie d\u00edlu. P\u0159\u00edli\u0161 n\u00edzk\u00fd tlak m\u016f\u017ee zp\u016fsobit ne\u00fapln\u00e9 pln\u011bn\u00ed, zat\u00edmco p\u0159\u00edli\u0161 vysok\u00fd tlak m\u016f\u017ee vyvolat turbulence a zachycen\u00ed plyn\u016f.<\/p>\n<h3>\u0158\u00edzen\u00ed teploty<\/h3>\n<p>\u0158\u00edzen\u00ed teploty ovliv\u0148uje tekutost kovu i zp\u016fsob tuhnut\u00ed odlitk\u016f. Je t\u0159eba sledovat n\u011bkolik teplotn\u00edch z\u00f3n:<\/p>\n<p><strong>Teplota roztaven\u00e9ho kovu<\/strong> se mus\u00ed udr\u017eovat v \u00fazk\u00e9m rozmez\u00ed vhodn\u00e9m pro danou slitinu.<\/p>\n<p><strong>Teplotu formy<\/strong> je t\u0159eba \u0159\u00eddit pomoc\u00ed oh\u0159\u00edvac\u00edch a chladic\u00edch kan\u00e1l\u016f. Nerovnom\u011brn\u00e1 teplota formy m\u016f\u017ee zp\u016fsobit vady, nap\u0159\u00edklad studen\u00e9 spoje nebo p\u0159ed\u010dasn\u00e9 tuhnut\u00ed.<\/p>\n<p><strong>Rychlost chlazen\u00ed<\/strong> ovliv\u0148uje mikrostrukturu a mechanick\u00e9 vlastnosti hotov\u00e9ho v\u00fdrobku. Obvykle se \u0159\u00edd\u00ed promy\u0161len\u00fdm rozm\u00edst\u011bn\u00edm chladic\u00edch kan\u00e1l\u016f a pr\u016ftokem chladic\u00ed kapaliny.<\/p>\n<h3>Techniky pln\u011bn\u00ed formy<\/h3>\n<p>Zp\u016fsob, jak\u00fdm kov proud\u00ed do formy, v\u00fdrazn\u011b ovliv\u0148uje kvalitu odlitku. \u0158\u00edzen\u00e9 a plynul\u00e9 pln\u011bn\u00ed omezuje turbulence a zachycen\u00ed plyn\u016f.<\/p>\n<p><strong>\u0158\u00edzen\u00ed rychlosti pln\u011bn\u00ed<\/strong> se dosahuje p\u0159esn\u00fdm p\u016fsoben\u00edm tlaku. Ide\u00e1ln\u00ed rychlost z\u00e1vis\u00ed na slo\u017eitosti d\u00edlu. Tenk\u00e9 \u010d\u00e1sti obvykle vy\u017eaduj\u00ed rychlej\u0161\u00ed pln\u011bn\u00ed, aby kov p\u0159ed\u010dasn\u011b neztuhl.<\/p>\n<p><strong>N\u00e1vrh vtokov\u00e9 soustavy<\/strong> spolupracuje s tlakov\u00fdmi parametry a usm\u011br\u0148uje tok kovu.<\/p>\n<h2>Materi\u00e1ly pro n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-709\" src=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-2.jpg\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-2.jpg 800w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-2-300x169.jpg 300w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-2-768x432.jpg 768w, https:\/\/moldiecasting.com\/wp-content\/uploads\/2025\/03\/Low-Pressure-Die-Casting-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h3>Hlin\u00edkov\u00e9 slitiny<\/h3>\n<p><a href=\"https:\/\/moldiecasting.com\/cs\/blog\/magnesium-vs-aluminum\/\">Hlin\u00edk<\/a> je nejb\u011b\u017en\u011bj\u0161\u00edm kovem pou\u017e\u00edvan\u00fdm p\u0159i n\u00edzkotlak\u00e9m tlakov\u00e9m lit\u00ed.<\/p>\n<p>Mezi obl\u00edben\u00e9 hlin\u00edkov\u00e9 slitiny pat\u0159\u00ed A356 a A357, kter\u00e9 maj\u00ed p\u0159i lit\u00ed v\u00fdbornou tekutost a po ztuhnut\u00ed dobrou pevnost.<\/p>\n<p>Jednou z v\u00fdhod hlin\u00edku je jeho recyklovatelnost, d\u00edky n\u00ed\u017e je oproti n\u011bkter\u00fdm alternativ\u00e1m \u0161etrn\u011bj\u0161\u00ed k \u017eivotn\u00edmu prost\u0159ed\u00ed.<\/p>\n<h3>Ho\u0159\u010d\u00edkov\u00e9 slitiny<\/h3>\n<p>Ho\u0159\u010d\u00edkov\u00e9 slitiny jsou je\u0161t\u011b leh\u010d\u00ed ne\u017e hlin\u00edk, a proto jsou st\u00e1le obl\u00edben\u011bj\u0161\u00ed v odv\u011btv\u00edch, kde je z\u00e1sadn\u00ed sn\u00ed\u017een\u00ed hmotnosti. Tyto slitiny jsou p\u0159ibli\u017en\u011b o 33 % leh\u010d\u00ed ne\u017e hlin\u00edk a o 75 % leh\u010d\u00ed ne\u017e ocel.<\/p>\n<p>Mezi b\u011b\u017en\u00e9 ho\u0159\u010d\u00edkov\u00e9 slitiny pro n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed pat\u0159\u00ed AZ91D a AM60B. Nab\u00edzej\u00ed v\u00fdborn\u00fd pom\u011br pevnosti a hmotnosti a dobrou sl\u00e9vatelnost p\u0159i n\u00edzkotlak\u00e9m procesu.<\/p>\n<p>D\u00edky dobr\u00fdm vibra\u010dn\u00edm vlastnostem se ho\u0159\u010d\u00edk obvykle pou\u017e\u00edv\u00e1 nap\u0159\u00edklad pro kryty elektroniky a elektrick\u00e9ho n\u00e1\u0159ad\u00ed.<\/p>\n<h3>Slitiny m\u011bdi<\/h3>\n<p><a href=\"https:\/\/moldiecasting.com\/cs\/blog\/copper-die-casting\/\">Slitiny m\u011bdi<\/a> p\u0159in\u00e1\u0161ej\u00ed n\u00edzkotlak\u00e9mu tlakov\u00e9mu lit\u00ed jedine\u010dn\u00e9 vlastnosti, nap\u0159\u00edklad mimo\u0159\u00e1dnou elektrickou a tepelnou vodivost.<\/p>\n<p>Mezi b\u011b\u017en\u011b pou\u017e\u00edvan\u00e9 slitiny m\u011bdi pat\u0159\u00ed r\u016fzn\u00e9 druhy bronzu a mosazi, kter\u00e9 se pou\u017e\u00edvaj\u00ed u instalat\u00e9rsk\u00fdch armatur, lodn\u00edho kov\u00e1n\u00ed a elektrick\u00fdch konektor\u016f. D\u00edky p\u0159irozen\u00fdm antimikrobi\u00e1ln\u00edm vlastnostem jsou cenn\u00e9 tak\u00e9 pro zdravotnick\u00e1 za\u0159\u00edzen\u00ed.<\/p>\n<h2>V\u00fdhody a omezen\u00ed LPDC<\/h2>\n<h3>Kvalita a p\u0159esnost<\/h3>\n<p>N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed vytv\u00e1\u0159\u00ed d\u00edly s vynikaj\u00edc\u00ed pevnost\u00ed a mechanick\u00fdmi vlastnostmi. Pomal\u00e9 a \u0159\u00edzen\u00e9 pln\u011bn\u00ed omezuje turbulence i zachycen\u00ed vzduchu, tak\u017ee vznik\u00e1 m\u00e9n\u011b vad a probl\u00e9m\u016f s p\u00f3rovitost\u00ed ne\u017e p\u0159i vysokotlak\u00e9m lit\u00ed.<\/p>\n<p>LPDC poskytuje kvalitn\u011bj\u0161\u00ed povrch, a proto m\u016f\u017ee omezit pot\u0159ebu dal\u0161\u00edch dokon\u010dovac\u00edch operac\u00ed. To \u0161et\u0159\u00ed \u010das i zdroje na v\u00fdrobn\u00ed lince.<\/p>\n<p>Proces umo\u017e\u0148uje p\u0159esn\u011bj\u0161\u00ed \u0159\u00edzen\u00ed toku kovu, co\u017e zaji\u0161\u0165uje jednotn\u011bj\u0161\u00ed kvalitu d\u00edl\u016f nap\u0159\u00ed\u010d v\u00fdrobn\u00edmi s\u00e9riemi. N\u00edzkotlak\u00fdm tlakov\u00fdm lit\u00edm lze dos\u00e1hnout u\u017e\u0161\u00edch toleranc\u00ed a lep\u0161\u00ed rozm\u011brov\u00e9 p\u0159esnosti.<\/p>\n<p>P\u0159i LPDC lze pou\u017e\u00edt p\u00edskov\u00e1 j\u00e1dra a vytv\u00e1\u0159et slo\u017eit\u011bj\u0161\u00ed vnit\u0159n\u00ed geometrii, kterou by bylo p\u0159i vysokotlak\u00fdch metod\u00e1ch obt\u00ed\u017en\u00e9 nebo nemo\u017en\u00e9 vyrobit.<\/p>\n<h3>Ekonomick\u00e1 efektivita<\/h3>\n<p>N\u00e1klady na za\u0159\u00edzen\u00ed pro n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed jsou obecn\u011b ni\u017e\u0161\u00ed ne\u017e u vysokotlak\u00fdch alternativ, tak\u017ee je dostupn\u011bj\u0161\u00ed p\u0159i zah\u00e1jen\u00ed nebo roz\u0161i\u0159ov\u00e1n\u00ed provozu s omezen\u00fdm rozpo\u010dtem.<\/p>\n<p>Formy LPDC obvykle vydr\u017e\u00ed d\u00e9le, proto\u017ee jsou m\u00e9n\u011b vystaveny opot\u0159eben\u00ed a tepeln\u00e9mu nam\u00e1h\u00e1n\u00ed ne\u017e vysokotlak\u00e9 formy. Prodlu\u017euje se t\u00edm \u017eivotnost n\u00e1stroje a zvy\u0161uje n\u00e1vratnost investice.<\/p>\n<p>Spot\u0159eba energie b\u00fdv\u00e1 u LPDC oproti vysokotlak\u00fdm metod\u00e1m ni\u017e\u0161\u00ed, co\u017e m\u016f\u017ee \u010dasem sn\u00ed\u017eit provozn\u00ed n\u00e1klady.<\/p>\n<h3>Omezen\u00ed materi\u00e1lu a konstrukce<\/h3>\n<p>LPDC je v\u0161estrann\u00e9, ale jeho lic\u00ed cykly jsou pomalej\u0161\u00ed ne\u017e u vysokotlak\u00fdch metod.<\/p>\n<p>Tento proces nav\u00edc nemus\u00ed b\u00fdt ide\u00e1ln\u00ed pro v\u0161echny materi\u00e1ly.<\/p>\n<p>LPDC m\u00e1 omezen\u00ed velikosti. Velmi velk\u00e9 sou\u010d\u00e1sti mohou vy\u017eadovat alternativn\u00ed v\u00fdrobn\u00ed metody nebo specializovan\u00e9 vybaven\u00ed.<\/p>\n<p>LPDC m\u00e1 tak\u00e9 omezen\u00ed tlou\u0161\u0165ky. U mimo\u0159\u00e1dn\u011b tenkost\u011bnn\u00fdch konstrukc\u00ed mohou nastat pot\u00ed\u017ee, proto\u017ee vy\u017eaduj\u00ed vy\u0161\u0161\u00ed tlaky dostupn\u00e9 p\u0159i HPDC.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>Kde se LPDC pou\u017e\u00edv\u00e1?<\/h3>\n<ol>\n<li><strong>Automobilov\u00fd pr\u016fmysl:<\/strong> kola, hlavy v\u00e1lc\u016f, bloky motor\u016f, sou\u010d\u00e1sti zav\u011b\u0161en\u00ed.<\/li>\n<li><strong>Leteck\u00fd pr\u016fmysl:<\/strong> lopatky turb\u00edn, konstruk\u010dn\u00ed d\u00edly, sou\u010d\u00e1sti z lehk\u00fdch slitin.<\/li>\n<li><strong>Pr\u016fmyslov\u00e9 stroje:<\/strong> sk\u0159\u00edn\u011b \u010derpadel, t\u011blesa ventil\u016f, hydraulick\u00e9 sou\u010d\u00e1sti.<\/li>\n<li><strong>Elektrotechnika\/elektronika:<\/strong> chladi\u010de, kryty motor\u016f, vodiv\u00e9 sou\u010d\u00e1sti.<\/li>\n<li><strong>Spot\u0159ebn\u00ed zbo\u017e\u00ed:<\/strong> kuchy\u0148sk\u00e9 n\u00e1dob\u00ed, sou\u010d\u00e1sti spot\u0159ebi\u010d\u016f, dekorativn\u00ed armatury.<\/li>\n<li><strong>Doprava:<\/strong> \u017eelezni\u010dn\u00ed sou\u010d\u00e1sti, d\u00edly lodn\u00edch motor\u016f.<\/li>\n<li><strong>Obnoviteln\u00e1 energie:<\/strong> sou\u010d\u00e1sti v\u011btrn\u00fdch turb\u00edn, r\u00e1my sol\u00e1rn\u00edch panel\u016f.<\/li>\n<li><strong>D\u00edly se slo\u017eitou geometri\u00ed:<\/strong> tenkost\u011bnn\u00e9 a vysoce pevn\u00e9 sou\u010d\u00e1sti s p\u0159esn\u00fdmi tolerancemi.<\/li>\n<\/ol>\n<h3>Jak\u00fd je rozd\u00edl mezi n\u00edzkotlak\u00fdm a vysokotlak\u00fdm tlakov\u00fdm lit\u00edm?<\/h3>\n<p>Vysokotlak\u00e9 tlakov\u00e9 lit\u00ed pou\u017e\u00edv\u00e1 mnohem vy\u0161\u0161\u00ed tlak (70\u2013700 bar) ne\u017e n\u00edzkotlak\u00e9 lit\u00ed (0,2\u20130,7 bar). P\u0159i vysokotlak\u00e9 metod\u011b se kov vst\u0159ikuje vodorovn\u011b vysokou rychlost\u00ed.<\/p>\n<p>N\u00edzkotlak\u00e9 lit\u00ed pln\u00ed formu \u0161etrn\u011bji a svisle, \u010d\u00edm\u017e omezuje turbulence a zachycen\u00ed vzduchu. Vysokotlak\u00e9 tlakov\u00e9 lit\u00ed m\u00e1 krat\u0161\u00ed cykly, ale vy\u0161\u0161\u00ed riziko vad zp\u016fsoben\u00fdch p\u00f3rovitost\u00ed.<\/p>\n<h3>Jak si n\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed vede oproti gravita\u010dn\u00edmu lit\u00ed z hlediska v\u00fdroby a kvality?<\/h3>\n<p>N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed umo\u017e\u0148uje l\u00e9pe \u0159\u00eddit tok kovu ne\u017e gravita\u010dn\u00ed lit\u00ed. V\u00fdsledkem je jednotn\u011bj\u0161\u00ed kvalita d\u00edl\u016f a lep\u0161\u00ed vypln\u011bn\u00ed slo\u017eit\u00fdch tvar\u016f.<\/p>\n<p>Gravita\u010dn\u00ed lit\u00ed vyu\u017e\u00edv\u00e1 k pln\u011bn\u00ed formy pouze gravitaci, co\u017e omezuje slo\u017eitost vyr\u00e1b\u011bn\u00fdch d\u00edl\u016f. N\u00edzkotlak\u00e9 metody dok\u00e1\u017eou vyplnit ten\u010d\u00ed \u010d\u00e1sti a propracovan\u011bj\u0161\u00ed tvary.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P\u0159ehled n\u00edzkotlak\u00e9ho tlakov\u00e9ho lit\u00ed N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed je proces tv\u00e1\u0159en\u00ed kov\u016f, p\u0159i n\u011bm\u017e \u0159\u00edzen\u00fd tlak pln\u00ed formy roztaven\u00fdm kovem a umo\u017e\u0148uje vyr\u00e1b\u011bt kvalitn\u00ed d\u00edly. Ve srovn\u00e1n\u00ed s tradi\u010dn\u00edmi metodami odl\u00e9v\u00e1n\u00ed nab\u00edz\u00ed v\u00fdhody z hlediska kvality a p\u0159esnosti. Definice a principy N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed (LPDC) vyu\u017e\u00edv\u00e1 tlak k vytla\u010den\u00ed roztaven\u00e9ho kovu vzh\u016fru do dutiny formy. Pec [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":24118,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"N\u00edzkotlak\u00e9 tlakov\u00e9 lit\u00ed: pr\u016fvodce efektivn\u00edm tv\u00e1\u0159en\u00edm kov\u016f","_seopress_titles_desc":"Poznejte proces a vlastnosti n\u00edzkotlak\u00e9ho tlakov\u00e9ho lit\u00ed. 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