{"id":1311,"date":"2016-02-10T01:26:07","date_gmt":"2016-02-09T23:26:07","guid":{"rendered":"http:\/\/uhal.sk\/?p=1311"},"modified":"2016-02-10T01:26:07","modified_gmt":"2016-02-09T23:26:07","slug":"rozdiel-medzi-cinskym-a-americkym-laserom","status":"publish","type":"post","link":"https:\/\/uhal.cz\/?p=1311","title":{"rendered":"Rozdiel medzi \u010d\u00ednskymi a americk\u00fdmi lasermi"},"content":{"rendered":"

Ak\u00fd je rozdiel medzi lasermi z \u010c\u00edny a lasermi z USA ?<\/span><\/h1>\n

Dost\u00e1vame ve\u013ek\u00e9 mno\u017estvo ot\u00e1zok typu:<\/span>
\n -Ako je to mo\u017en\u00e9, \u017ee \u010d\u00ednske lasery s\u00fa tak\u00e9 lacn\u00e9?<\/span>
\n <\/span>
\n -Nespravia mi \u010d\u00ednske lasery t\u00fa ist\u00fa pr\u00e1cu?<\/span>
\n -Nesta\u010d\u00ed mi na za\u010diatok \u010d\u00ednsky laser? at\u010f.<\/span><\/p>\n

Na za\u010diatok chcem poveda\u0165, \u017ee sme \u010d\u00ednske lasery pred\u00e1vali a aj teraz ich m\u00e1me v ponuke\u00a0 a servisujeme ich. Ke\u010f\u017ee pred\u00e1vame aj lasery americk\u00e9, taliansk\u00e9 a in\u00e9, vieme presne o \u010dom hovor\u00edme. Nem\u00e1me poh\u013ead len z jednej strany a vieme ve\u013emi dobre porovna\u0165 rozdiely.<\/span><\/p>\n

Ja by som e\u0161te trochu zmenil ot\u00e1zku:<\/span>
\nAk\u00fd je rozdiel medzi lasermi, ktor\u00e9 pou\u017e\u00edvaj\u00fa sklenen\u00e9 \u010dinske trubice a lasermi s kovov\u00fdmi RF trubicami ?<\/strong><\/span><\/p>\n

\u00c1no tu\u0161\u00edte sp\u00e1vne, podstatn\u00fd rozdiel je v pou\u017eit\u00fdch laserov\u00fdch gener\u00e1toroch -\u013eudovo povedan\u00e9 trubiciach. To je hlavn\u00fd d\u00f4vod aj ich rozdielnej ceny. Ostan\u00e9 s\u00fa\u010dasti strojov ako s\u00fa motory, remene, optika, elektronika, plechov\u00e9 kryty s\u00fa dnes cenovo porovnate\u013en\u00e9 \u2013 \u010di sa vyr\u00e1baj\u00fa v \u010c\u00edne alebo v USA ceny s\u00fa podobn\u00e9, rozdiel max 20%. Za americk\u00e9 v\u00fdrobky si priplat\u00edte viacej, ale dostanete \u010faleko kvalitnej\u0161ie diely s dlh\u0161ou z\u00e1rukou.<\/span><\/p>\n

Ako je to teda s t\u00fdmi \u201ctrubicami\u201d ?<\/span><\/strong><\/p>\n

Najprv trocha te\u00f3rie. Hovor\u00edme o laserov\u00fdch gener\u00e1toroch \u2013 trubiciach typu CO2. S\u00fa to tzv. plynov\u00e9 lasery, lebo laserov\u00fd l\u00fa\u010d sa vytv\u00e1ra a formuje v plynnom prostred\u00ed. V uzavretom priestore je natlakovan\u00e1 zmes r\u00f4znych plynov (ka\u017ed\u00fd v\u00fdrobca si starostlivo str\u00e1\u017ei presn\u00fd pomer) CO2, Dus\u00edk, H\u00e9lium a pod. Najviacej je tam CO2, preto sa t\u00fdmto laserom hovor\u00ed CO2 lasery. Princ\u00edp vzniku laserov\u00e9ho l\u00fa\u010da je pomerne jednoduch\u00fd. Sta\u010d\u00ed umiestni\u0165 do tohto uzavret\u00e9ho priestoru dve elektr\u00f3dy \u2013 an\u00f3du na jednej strane, kat\u00f3du na druhej strane a privies\u0165 na nich nap\u00e4tie okolo 10-20 tis\u00edc Voltov a vznikne tok fot\u00f3nov \u2013 laserov\u00fd l\u00fa\u010d. Je to podobn\u00fd princ\u00edp ako \u017eiarivka vo va\u0161ej ob\u00fdva\u010dke, len v silnej\u0161om preveden\u00ed. Na jednej strane trubice je polopriepustn\u00e9 zrkadlo, cez ktor\u00e9 vych\u00e1dza sveteln\u00fd l\u00fa\u010d. Pri vzniku laserov\u00e9ho l\u00fa\u010da vznik\u00e1 ve\u013ek\u00e9 teplo, preto je nutn\u00e9 trubicu chladi\u0165 vodou. Takto funguj\u00fa lacn\u00e9 \u010d\u00ednske laserov\u00e9 trubice.<\/span>
\n\"\"
\nSklenen\u00e9 \u010d\u00ednske laserov\u00e9 trubice<\/p>\n

Ako isto tu\u0161\u00edte ak je nie\u010do pr\u00edli\u017e jednoduch\u00e9 tak, v\u00fdsledn\u00e1 kvalita nebude ve\u013emi vysok\u00e1. A u sklenen\u00fdch laserov\u00fdch trub\u00edc to plat\u00ed doslova. Dostanete s\u00edce laserov\u00fd l\u00fa\u010d, ale jeho v\u00fdkon je kol\u00edsav\u00fd (nerovnomern\u00e9 grav\u00edrovanie a rezanie), hr\u00fabka laserov\u00e9ho l\u00fa\u010da je pomerne ve\u013ek\u00e1 (energia sa rozklad\u00e1 na v\u00e4\u010d\u0161ej ploche a \u00fa\u010dinok je ni\u017e\u0161\u00ed) a prierez je elipsa a nie s\u00famern\u00fd kruh (nes\u00famern\u00e9 grav\u00edrovanie v osi X a Y). \u017divotnos\u0165 takejto trubice je asi 500 a\u017e 1200 hod\u00edn. Jedin\u00e1 pozit\u00edvna vec je jej cena \u2013 od cca 180 Eur -pod\u013ea v\u00fdkonu. Z\u00e1kazn\u00edci preto rad\u0161ej hne\u010f pri k\u00fape lasera kupuj\u00fa aj n\u00e1hradn\u00fa trubicu.<\/span><\/p>\n

Tieto nedostatky nevadia z\u00e1kazn\u00edkom, ktor\u00ed napr. re\u017eu preglejky, textil a in\u00e9 materi\u00e1ly kde nie s\u00fa mal\u00e9 detaily a nejak\u00fd milimeter hore dole nehr\u00e1 rolu. Alebo grav\u00edruj\u00fa nie men\u0161ie p\u00edsmo ako 3 mm a maj\u00fa dostatok \u010dasu (sklenen\u00e9 trubice nie s\u00fa schopn\u00e9 vyp\u00edna\u0165 a zap\u00ednana\u0165 l\u00fa\u010d vo ve\u013emi kr\u00e1tkych \u010dasov\u00fdch intervaloch, preto je grav\u00edrovanie pomerne pomal\u00e9).<\/span><\/p>\n

Ak v\u0161ak po\u017eadujete vy\u0161\u0161iu kvalitu, na lasery s t\u00fdmito trubicami rad\u0161ej zabudnite. Na odstr\u00e1nenie nedostakov, ktor\u00e9 maj\u00fa tieto trubice je potrebn\u00e9 \u00faplne in\u00fa ove\u013ea n\u00e1ro\u010dnej\u0161iu technol\u00f3giu. Preto v\u00fdrobcovia vyvinuli kovov\u00e9 laserov\u00e9 trubice, ktor\u00e9 maj\u00fa plyn natlakovan\u00fd vo ve\u013emi \u00fazkej (len 2 mm \u0161irokej) \u0161trbine, prec\u00edznej ve\u013emi presnej kon\u0161trukcie. Budenie toku fot\u00f3nov nie je vysok\u00fdm nap\u00e4t\u00edm ale RF sign\u00e1lom, \u010do umo\u017e\u0148uje prec\u00edzne riadenie v\u00fdkonu a sp\u00ednac\u00edch \u010dasov. Tieto trubice maj\u00fa ve\u013emi stabiln\u00fd v\u00fdkon a prierez laserov\u00e9ho l\u00fa\u010da je presn\u00fd kruhov\u00fd. Na obr\u00e1zku vid\u00edte v\u013eavo hore ako vyzer\u00e1 prierez\u00a0 laserov\u00e9ho l\u00fa\u010da z trubice Epilog a ostatn\u00e9 obr\u00e1zky s\u00fa r\u00f4zne prierezy l\u00fa\u010dov zo sklenen\u00fdch trub\u00edc.<\/span>
\n\"\"<\/p>\n

Priemer l\u00fa\u010da je 5x men\u0161\u00ed ako u sklenen\u00fdch trub\u00edc. Energia p\u00f4sob\u00ed na men\u0161ej ploche a tak je \u00fa\u010dinnos\u0165-prieraznos\u0165 laserov\u00e9ho l\u00fa\u010da \u010faleko vy\u0161\u0161ia. Pre porovnanie 40W kovov\u00e1 trubica Epilog prere\u017ee tak\u00fd hrub\u00fd materi\u00e1l ako 70W sklenen\u00e1 \u010d\u00ednska trubica. Teda nie je mo\u017en\u00e9 jednoduch\u00e9 porovnanie v\u00fdkonov.<\/span><\/p>\n

\"\"<\/p>\n

Kovov\u00e1 RF laserov\u00e1 trubica Epilog<\/p>\n

Tieto trubice s\u00fa celohlin\u00edkov\u00e9, a preto\u017ee ich \u00fa\u010dinnos\u0165 je vy\u0161\u0161ia, pri tvorbe laserov\u00e9ho l\u00fa\u010da vznik\u00e1 menej tepla. Toto teplo sta\u010d\u00ed pohlcova\u0165 hlin\u00edkov\u00e9 teleso trubice, preto na ich chladenie sta\u010d\u00ed vzduch a vodn\u00e9 chladenie je nutn\u00e9 a\u017e pri vy\u0161\u0161\u00edch v\u00fdkonoch nad 150W.<\/span><\/p>\n

\u017divotnos\u0165 kovovej trubice je aj 15 000 hod\u00edn, cca 5-7 rokov. Cena tak\u00fdchto trub\u00edc je od 2000 Eur vy\u0161\u0161ie. Preto je tak\u00fd cenov\u00fd rozdiel medzi \u010d\u00ednskymi lasermi a lasermi Epilog. Niektor\u00e9 \u010d\u00ednske firmy d\u00e1vaj\u00fa do svojich laserov aj americk\u00e9 laserov\u00e1 RF trubice, ale cena tak\u00fdto laserov u\u017e je len asi o 20% ni\u017e\u0161ia ako laserov americk\u00fdch. To u\u017e nie je tak\u00fd cenov\u00fd rozdiel aby ste o\u017eeleli vy\u0161\u0161iu kvalitu a dlh\u0161iu z\u00e1ruku, ktor\u00fa u americk\u00fdch laserov dostanete.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Ak\u00fd je rozdiel medzi lasermi z \u010c\u00edny a lasermi z USA ? Dost\u00e1vame ve\u013ek\u00e9 mno\u017estvo ot\u00e1zok typu: -Ako je to mo\u017en\u00e9, \u017ee \u010d\u00ednske lasery s\u00fa tak\u00e9 lacn\u00e9?<\/p>\n","protected":false},"author":2,"featured_media":1480,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","cat-5-id"],"_links":{"self":[{"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/posts\/1311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/uhal.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1311"}],"version-history":[{"count":0,"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/posts\/1311\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/uhal.cz\/index.php?rest_route=\/wp\/v2\/media\/1480"}],"wp:attachment":[{"href":"https:\/\/uhal.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/uhal.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/uhal.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}