{"id":12391,"date":"2026-04-13T19:53:13","date_gmt":"2026-04-13T17:53:13","guid":{"rendered":"https:\/\/ingritech.pl\/problemy-pri-abrazivnim-obrabeni-priciny-a-reseni\/"},"modified":"2026-08-24T13:23:34","modified_gmt":"2026-08-24T11:23:34","slug":"problemy-pri-abrazivnim-obrabeni-priciny-a-reseni","status":"publish","type":"post","link":"https:\/\/ingritech.pl\/cs\/problemy-pri-abrazivnim-obrabeni-priciny-a-reseni\/","title":{"rendered":"Probl\u00e9my p\u0159i abrazivn\u00edm obr\u00e1b\u011bn\u00ed \u2013 p\u0159\u00ed\u010diny a \u0159e\u0161en\u00ed"},"content":{"rendered":"

Probl\u00e9my p\u0159i trysk\u00e1n\u00ed \u2013 p\u0159\u00ed\u010diny, p\u0159\u00edznaky a \u0159e\u0161en\u00ed<\/h1>\n

Probl\u00e9my p\u0159i trysk\u00e1n\u00ed<\/strong> velmi \u010dasto nesouvis\u00ed pouze s kvalitou tryskac\u00edho materi\u00e1lu.
\nV praxi maj\u00ed na n\u00e1klady procesu vliv tak\u00e9 pracovn\u00ed tlak, typ za\u0159\u00edzen\u00ed, nastaven\u00ed separ\u00e1toru, opot\u0159eben\u00ed trysek a zp\u016fsob pou\u017eit\u00ed abraziva. Proto je p\u0159ed posouzen\u00edm kvality broku vhodn\u00e9 analyzovat cel\u00fd technologick\u00fd proces.<\/p>\n

Dobr\u00fdm p\u0159\u00edkladem je situace, kdy z 1 tuny materi\u00e1lu<\/strong> vznikne po jednom cyklu p\u0159ibli\u017en\u011b 45\u201360 kg prachu<\/strong>. To znamen\u00e1 ztr\u00e1ty na \u00farovni p\u0159ibli\u017en\u011b 4,5\u20136 %<\/strong>.
\nU drcen\u00e9ho broku je takov\u00fd v\u00fdsledek ji\u017e varovn\u00fdm sign\u00e1lem. Nemus\u00ed v\u0161ak nutn\u011b znamenat vadu materi\u00e1lu, proto\u017ee stejn\u011b \u010dasto poukazuje na p\u0159\u00edli\u0161 agresivn\u00ed nastaven\u00ed provozu, chyby p\u0159i t\u0159\u00edd\u011bn\u00ed nebo p\u0159irozen\u011b vy\u0161\u0161\u00ed opot\u0159eben\u00ed v syst\u00e9mu trysk\u00e1n\u00ed vzduchem.
\nopot\u0159eben\u00ed v syst\u00e9mu trysk\u00e1n\u00ed vzduchem.<\/p>\n

Kl\u00ed\u010dov\u00fd p\u0159\u00edznak: nadm\u011brn\u00e9 pr\u00e1\u0161en\u00ed broku<\/a><\/h2>\n

Pokud po jednom cyklu z 1 tuny abraziva zb\u00fdv\u00e1 a\u017e 45\u201360 kg prachu<\/strong>, znamen\u00e1 to zv\u00fd\u0161en\u00e9 opot\u0159eben\u00ed materi\u00e1lu. Typick\u00fd, spr\u00e1vn\u00fd rozsah ztr\u00e1t se obvykle pohybuje kolem 20\u201340 kg na 1 tunu<\/strong>, tedy 2\u20134 %<\/strong>. Naopak \u00farove\u0148 nad 50 kg prachu na tunu<\/strong> znamen\u00e1, \u017ee je t\u0159eba pe\u010dliv\u011b zkontrolovat parametry procesu.<\/p>\n\n\n\n\n\n\n\n
\u00darove\u0148 ztr\u00e1t<\/th>\nP\u0159epo\u010det na 1 tunu<\/th>\nHodnocen\u00ed<\/th>\n<\/tr>\n<\/thead>\n
2\u20134 %<\/strong><\/td>\n20\u201340 kg prachu<\/td>\nTypick\u00fd rozsah<\/td>\n<\/tr>\n
4,5\u20136 %<\/strong><\/td>\n45\u201360 kg prachu<\/td>\nV\u00fdstra\u017en\u00fd sign\u00e1l<\/td>\n<\/tr>\n
>6 %<\/strong><\/td>\nv\u00edce ne\u017e 60 kg prachu<\/td>\nVy\u017eaduje okam\u017eitou diagnostiku<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tento v\u00fdsledek sice je\u0161t\u011b nep\u0159edstavuje kritickou anom\u00e1lii, ale jasn\u011b ukazuje, \u017ee v procesu p\u016fsob\u00ed faktory, kter\u00e9 urychluj\u00ed rozpad zrn abraziva.<\/p>\n

Nej\u010dast\u011bj\u0161\u00ed probl\u00e9my p\u0159i trysk\u00e1n\u00ed<\/h2>\n

1. Nadm\u011brn\u00e1 spot\u0159eba abraziva<\/h3>\n

Nadm\u011brn\u00e1 spot\u0159eba broku je jedn\u00edm z nej\u010dast\u011bj\u0161\u00edch probl\u00e9m\u016f pozorovan\u00fdch v praxi. Projevuje se rychl\u00fdm n\u00e1r\u016fstem mno\u017estv\u00ed prachu, poklesem v\u00fdkonu a nutnost\u00ed \u010dast\u011bj\u0161\u00edho dopl\u0148ov\u00e1n\u00ed materi\u00e1lu.<\/p>\n

P\u0159\u00ed\u010dinou nen\u00ed v\u011bt\u0161inou samotn\u00fd abrazivn\u00ed materi\u00e1l, ale p\u0159\u00edli\u0161 agresivn\u00ed provozn\u00ed re\u017eim. \u010c\u00edm vy\u0161\u0161\u00ed je tlak a \u010d\u00edm dynami\u010dt\u011bj\u0161\u00ed je proud, t\u00edm v\u011bt\u0161\u00ed je riziko rozbit\u00ed zrn.<\/p>\n

2. P\u0159\u00edli\u0161 agresivn\u00ed provozn\u00ed parametry<\/h3>\n

Jednou z nejpravd\u011bpodobn\u011bj\u0161\u00edch p\u0159\u00ed\u010din probl\u00e9mu je p\u0159\u00edli\u0161 vysok\u00fd provozn\u00ed re\u017eim. Pokud za\u0159\u00edzen\u00ed pracuje p\u0159i tlaku 7\u20138 bar<\/strong> a vysok\u00e9m pr\u016ftoku vzduchu, lomov\u00e1 dr\u0165 se opot\u0159ebov\u00e1v\u00e1 rychleji. V takov\u00e9 situaci zrna nar\u00e1\u017eej\u00ed s v\u011bt\u0161\u00ed energi\u00ed, a proto \u010dast\u011bji praskaj\u00ed a p\u0159ech\u00e1zej\u00ed do prachov\u00e9 frakce.<\/p>\n\n\n\n\n\n\n\n
Parametr<\/th>\nVliv na proces<\/th>\nMo\u017en\u00fd v\u00fdsledek<\/th>\n<\/tr>\n<\/thead>\n
P\u0159\u00edli\u0161 vysok\u00fd tlak<\/strong><\/td>\nSiln\u011bj\u0161\u00ed n\u00e1raz zrna<\/td>\nV\u011bt\u0161\u00ed pra\u0161nost a rychlej\u0161\u00ed opot\u0159eben\u00ed<\/td>\n<\/tr>\n
Vysok\u00fd pr\u016ftok vzduchu<\/strong><\/td>\nAgresivn\u011bj\u0161\u00ed proud<\/td>\nRozpad pracovn\u00ed frakce<\/td>\n<\/tr>\n
P\u0159\u00edli\u0161 dlouh\u00e1 doba zpracov\u00e1n\u00ed<\/strong><\/td>\nV\u00edce koliz\u00ed zrn<\/td>\nVy\u0161\u0161\u00ed ztr\u00e1ty materi\u00e1lu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Jin\u00fdmi slovy, \u010d\u00edm agresivn\u011bj\u0161\u00ed proces, t\u00edm v\u011bt\u0161\u00ed riziko nadm\u011brn\u00fdch ztr\u00e1t. Proto je p\u0159i anal\u00fdze probl\u00e9mu vhodn\u00e9 nejprve zkontrolovat pr\u00e1v\u011b tlak, pr\u016ftok a dobu p\u016fsoben\u00ed materi\u00e1lu.<\/p>\n

3. Air blasting nam\u00edsto turb\u00ednov\u00e9ho syst\u00e9mu<\/h3>\n

V tlakov\u00fdch syst\u00e9mech, tj. air blasting<\/em>, je spot\u0159eba brok\u016f obvykle vy\u0161\u0161\u00ed ne\u017e v turb\u00ednov\u00fdch syst\u00e9mech. D\u016fvodem je m\u00e9n\u011b kontrolovan\u00fd charakter n\u00e1raz\u016f a v\u011bt\u0161\u00ed pod\u00edl samorozdrcen\u00ed zrn v ob\u011bhu.<\/p>\n

Pokud se proces odehr\u00e1v\u00e1 prost\u0159ednictv\u00edm tlakov\u00e9 n\u00e1dr\u017ee, hadic a trysek, je tvorba 45\u201360 kg prachu z 1 tuny materi\u00e1lu<\/strong> z technologick\u00e9ho hlediska srozumiteln\u011bj\u0161\u00ed.<\/p>\n

4. Nespr\u00e1vn\u011b nastaven\u00e1 separace brusiva<\/h3>\n

Separ\u00e1tor m\u00e1 velmi velk\u00fd vliv na ekonomiku procesu. Pokud pracuje p\u0159\u00edli\u0161 agresivn\u011b, m\u016f\u017ee odstra\u0148ovat i plnohodnotnou pracovn\u00ed frakci. Pokud pracuje p\u0159\u00edli\u0161 slab\u011b, prach z\u016fst\u00e1v\u00e1 v ob\u011bhu a urychluje opot\u0159eben\u00ed dal\u0161\u00edch zrn.
\nV obou p\u0159\u00edpadech rostou n\u00e1klady a zhor\u0161uje se stabilita procesu.<\/p>\n

5. Opot\u0159eben\u00ed trysek a sou\u010d\u00e1st\u00ed za\u0159\u00edzen\u00ed<\/h3>\n

Opot\u0159ebovan\u00e1 tryska m\u016f\u017ee zhor\u0161it charakter proudu a sn\u00ed\u017eit \u00fa\u010dinnost obr\u00e1b\u011bn\u00ed. Nav\u00edc ciz\u00ed t\u011blesa, po\u0161kozen\u00e9 gumov\u00e9 prvky nebo ne\u010distoty v trysce mohou m\u011bnit dr\u00e1hu abraziva a urychlovat opot\u0159eben\u00ed jak materi\u00e1lu, tak samotn\u00e9ho za\u0159\u00edzen\u00ed.<\/p>\n

V praxi to znamen\u00e1, \u017ee ani kvalitn\u00ed broky nebudou fungovat spr\u00e1vn\u011b, pokud nen\u00ed pod\u00e1vac\u00ed syst\u00e9m udr\u017eov\u00e1n v dobr\u00e9m technick\u00e9m stavu.<\/p>\n

6. Nestabiln\u00ed pr\u016ftok abraziva<\/h3>\n

Pokud abrazivn\u00ed materi\u00e1l neproud\u00ed rovnom\u011brn\u011b, obsluha zaznamen\u00e1 pokles \u00fa\u010dinnosti \u010di\u0161t\u011bn\u00ed, kol\u00edsaj\u00edc\u00ed intenzitu proudu a nerovnom\u011brn\u00e9 opracov\u00e1n\u00ed povrchu. P\u0159\u00ed\u010dinou mohou b\u00fdt ucp\u00e1vky, ne\u010distoty, nespr\u00e1vn\u00fd stav trysky nebo p\u0159\u00edli\u0161 n\u00edzk\u00e1 hladina materi\u00e1lu v syst\u00e9mu.<\/p>\n

7. Zne\u010di\u0161t\u011bn\u00ed broku<\/h3>\n

Probl\u00e9my p\u0159i trysk\u00e1n\u00ed mohou tak\u00e9 vypl\u00fdvat ze zne\u010di\u0161t\u011bn\u00ed abraziva. V ob\u011bhu se mohou objevit zbytky barvy, rzi, oleje, vlhkosti nebo ciz\u00edch \u010d\u00e1stic, kter\u00e9 zhor\u0161uj\u00ed kvalitu \u010di\u0161t\u011bn\u00ed a zvy\u0161uj\u00ed opot\u0159eben\u00ed za\u0159\u00edzen\u00ed.<\/p>\n

V n\u011bkter\u00fdch aplikac\u00edch m\u016f\u017ee zne\u010di\u0161t\u011bn\u00e9 abrazivo nav\u00edc zanech\u00e1vat ne\u017e\u00e1douc\u00ed \u010d\u00e1stice na opracov\u00e1van\u00e9m povrchu.<\/p>\n

8. Usazov\u00e1n\u00ed jemn\u00fdch \u010d\u00e1stic na povrchu<\/h3>\n

Velmi jemn\u00e9 frakce brusiva a prachu se mohou usazovat na obr\u00e1b\u011bn\u00e9m povrchu, zejm\u00e9na pokud nen\u00ed proces spr\u00e1vn\u011b kontrolov\u00e1n. To je zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 u d\u00edl\u016f, kter\u00e9 vy\u017eaduj\u00ed vysokou \u010distotu povrchu p\u0159ed dal\u0161\u00edm zpracov\u00e1n\u00edm, lakov\u00e1n\u00edm nebo pasivac\u00ed.<\/p>\n

9. Probl\u00e9my s odpra\u0161ov\u00e1n\u00edm a nadm\u011brn\u00fdm mno\u017estv\u00edm prachu<\/h3>\n

Pokud syst\u00e9m odpr\u00e1\u0161en\u00ed nefunguje \u00fa\u010dinn\u011b, prach z\u016fst\u00e1v\u00e1 v pracovn\u00ed z\u00f3n\u011b a vrac\u00ed se do ob\u011bhu. To sni\u017euje viditelnost, zhor\u0161uje pracovn\u00ed podm\u00ednky, urychluje opot\u0159eben\u00ed brusiva a m\u016f\u017ee negativn\u011b ovlivnit kone\u010dn\u00fd v\u00fdsledek obr\u00e1b\u011bn\u00ed.<\/p>\n

10. Nespr\u00e1vn\u00fd zp\u016fsob pou\u017eit\u00ed brok\u016f<\/h3>\n

Pokud se tryskac\u00ed m\u00e9dium pou\u017eije pouze jednou a pot\u00e9 se zlikviduje, st\u00e1v\u00e1 se i kvalitn\u00ed materi\u00e1l ekonomicky neefektivn\u00ed. Takov\u00fd model nen\u00ed v profesion\u00e1ln\u00edm trysk\u00e1n\u00ed standardem a zt\u011b\u017euje re\u00e1ln\u00e9 posouzen\u00ed \u017eivotnosti materi\u00e1lu.<\/p>\n\n\n\n\n\n\n\n\n\n
Probl\u00e9m<\/th>\nNej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dina<\/th>\nD\u016fsledek<\/th>\n<\/tr>\n<\/thead>\n
Nadm\u011brn\u00e9 pra\u0161n\u011bn\u00ed<\/strong><\/td>\nP\u0159\u00edli\u0161 vysok\u00fd tlak nebo p\u0159\u00edli\u0161 jemn\u00e1 frakce<\/td>\nV\u011bt\u0161\u00ed ztr\u00e1ty brok\u016f<\/td>\n<\/tr>\n
Nerovnom\u011brn\u00fd proud<\/strong><\/td>\nUcp\u00e1n\u00ed, opot\u0159ebovan\u00e1 tryska, nestabiln\u00ed pr\u016ftok<\/td>\nNerovnom\u011brn\u00e9 opracov\u00e1n\u00ed<\/td>\n<\/tr>\n
Rychl\u00e9 opot\u0159eben\u00ed abraziva<\/strong><\/td>\nVzduchov\u00e9 trysk\u00e1n\u00ed a agresivn\u00ed provozn\u00ed re\u017eim<\/td>\nN\u00e1r\u016fst n\u00e1klad\u016f na proces<\/td>\n<\/tr>\n
Zne\u010di\u0161t\u011bn\u00ed povrchu<\/strong><\/td>\nZne\u010di\u0161t\u011bn\u00fd brusn\u00fd materi\u00e1l nebo prach v ob\u011bhu<\/td>\nHor\u0161\u00ed kvalita povrchov\u00e9 \u00fapravy<\/td>\n<\/tr>\n
Pokles v\u00fdkonu<\/strong><\/td>\nOpot\u0159eben\u00ed trysek nebo \u0161patn\u00e9 ods\u00e1v\u00e1n\u00ed prachu<\/td>\nNi\u017e\u0161\u00ed \u00fa\u010dinnost obr\u00e1b\u011bn\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Znamen\u00e1 tento probl\u00e9m v\u017edy \u0161patnou kvalitu brok\u016f?<\/h2>\n

Ne. Pokud se podobn\u00fd v\u00fdsledek objevuje u n\u011bkolika \u0161ar\u017e\u00ed materi\u00e1lu, jedn\u00e1 se mnohem \u010dast\u011bji o probl\u00e9m v procesu ne\u017e o n\u00e1hodnou vadu produktu. O kvalit\u011b drti lze hovo\u0159it teprve tehdy, kdy\u017e je v\u00fdsledek i p\u0159es spr\u00e1vn\u00e9 nastaven\u00ed za\u0159\u00edzen\u00ed a kontrolu separ\u00e1toru st\u00e1le \u0161patn\u00fd.<\/p>\n

Pokud ztr\u00e1ty trvale p\u0159esahuj\u00ed 60 kg prachu na 1 tunu<\/strong> a proces je nastaven spr\u00e1vn\u011b, lze zv\u00e1\u017eit p\u0159\u00ed\u010diny, jako je p\u0159\u00edli\u0161 n\u00edzk\u00e1 r\u00e1zov\u00e1 pevnost, mikrotrhliny nebo nestabiln\u00ed struktura materi\u00e1lu.<\/p>\n

Jak spr\u00e1vn\u011b diagnostikovat probl\u00e9my p\u0159i trysk\u00e1n\u00ed?<\/h2>\n

Aby bylo mo\u017en\u00e9 odli\u0161it technologick\u00fd probl\u00e9m od probl\u00e9mu s materi\u00e1lem, je vhodn\u00e9 se op\u0159\u00edt o tvrd\u00e1 data. Pouze tak lze objektivn\u011b posoudit p\u0159\u00ed\u010dinu ztr\u00e1t.<\/p>\n

    \n
  • kontrola granulometrie broku p\u0159ed a po procesu,<\/li>\n
  • m\u011b\u0159en\u00ed pod\u00edlu frakce pod 0,3 mm,<\/li>\n
  • kontrola nastaven\u00ed separ\u00e1toru,<\/li>\n
  • kontrola skute\u010dn\u00e9ho tlaku a pr\u016ftoku,<\/li>\n
  • posouzen\u00ed stavu trysek a spot\u0159ebn\u00edch d\u00edl\u016f,<\/li>\n
  • porovn\u00e1n\u00ed s jin\u00fdm tryskac\u00edm materi\u00e1lem za identick\u00fdch podm\u00ednek.<\/li>\n<\/ul>\n

    Z\u00e1v\u011bry<\/h2>\n

    V uveden\u00e9m p\u0159\u00edkladu \u00fadaje jednozna\u010dn\u011b nepotvrzuj\u00ed, \u017ee probl\u00e9m souvis\u00ed s kvalitou tryskac\u00edho materi\u00e1lu. Mnohem siln\u011bji poukazuj\u00ed na vliv procesu, a to zejm\u00e9na:<\/p>\n

      \n
    • p\u0159\u00edli\u0161 agresivn\u00edho tlaku,<\/li>\n
    • charakteristiky syst\u00e9mu air blasting,<\/li>\n
    • mo\u017en\u00fdch chyb p\u0159i separaci,<\/li>\n
    • opot\u0159eben\u00ed trysek a p\u0159\u00edslu\u0161enstv\u00ed,<\/li>\n
    • neoptim\u00e1ln\u00edho modelu pou\u017eit\u00ed materi\u00e1lu.<\/li>\n<\/ul>\n

      Proto probl\u00e9my p\u0159i abrazivn\u00edm obr\u00e1b\u011bn\u00ed<\/strong> je t\u0159eba diagnostikovat komplexn\u011b.
      \nNejprve je t\u0159eba analyzovat nastaven\u00ed procesu, pot\u00e9 separa\u010dn\u00ed syst\u00e9m a stav za\u0159\u00edzen\u00ed a teprve nakonec samotn\u00fd materi\u00e1l. Takov\u00fd p\u0159\u00edstup umo\u017e\u0148uje omezit pra\u0161nost, prodlou\u017eit \u017eivotnost abraziva a sn\u00ed\u017eit celkov\u00e9 n\u00e1klady na obr\u00e1b\u011bn\u00ed.