{"id":3022,"date":"2026-02-05T01:35:08","date_gmt":"2026-02-05T01:35:08","guid":{"rendered":"https:\/\/www.materialstests.com\/products\/melt-flow-rate-tester\/"},"modified":"2026-02-05T01:35:08","modified_gmt":"2026-02-05T01:35:08","slug":"melt-flow-rate-tester","status":"publish","type":"products","link":"https:\/\/www.materialstests.com\/ro\/products\/melt-flow-rate-tester.html","title":{"rendered":"Tester de debit de topire"},"content":{"rendered":"<h2>Prezentarea aparatului de m\u0103surare a vitezei de curgere la topire<\/h2>\n<p><a href=\"https:\/\/www.materialstests.com\/ro\/plastics-testing.html\/\"><strong>Tester de debit de topire<\/strong><\/a>\u00a0este utilizat\u0103 pentru determinarea debitului masic de topitur\u0103 (MFR) \u0219i a debitului volumic de topitur\u0103 (MVR) al materialelor termoplastice \u00een condi\u021bii specificate de temperatur\u0103 \u0219i sarcin\u0103. Aceasta include dou\u0103 proceduri de testare: metoda de m\u0103surare a masei \u0219i metoda de m\u0103surare a deplas\u0103rii.<\/p>\n<p>Testarea materialelor plastice tehnice \u0219i a materialelor plastice \u00een general: Poate fi utilizat pentru testarea materialelor plastice tehnice cu puncte de topire ridicate, precum polietilena, poliarilsulfonul, fluoroplasturile, nailonul etc. De asemenea, este adecvat pentru materialele plastice cu puncte de topire mai sc\u0103zute, inclusiv, dar f\u0103r\u0103 a se limita la, polietilen\u0103, polistiren, polipropilen\u0103, r\u0103\u0219in\u0103 ABS, r\u0103\u0219in\u0103 polioximetilen\u0103 etc.<\/p>\n<p><strong>Determinarea MFR \u0219i MVR:<\/strong><br \/>\nMFR (debitul de mas\u0103 al materialului topit): prin extrudarea materialului topit din cilindrul contorului de plastic \u00een condi\u021bii prestabilite \u0219i trecerea acestuia printr-o matri\u021b\u0103 cu lungime \u0219i diametru specifice. Pentru determinarea MFR (procedura A), masa extrudatului este c\u00e2nt\u0103rit\u0103 \u00eentr-un interval de timp specific pentru a calcula rata de extrudare (g\/10 minute) la fiecare 10 minute.<br \/>\nMVR (debitul volumic al materialului topit): Pentru determinarea MVR (procedura B), se \u00eenregistreaz\u0103 distan\u021ba parcurs\u0103 de piston \u00eentr-un interval de timp specific sau timpul necesar pistonului pentru a parcurge o distan\u021b\u0103 specific\u0103, \u00een vederea calcul\u0103rii vitezei de extrudare (centimetri cubi\/10 minute) la fiecare 10 minute.<\/p>\n<h2>Principiul de func\u021bionare al aparatului de m\u0103surare a debitului de topire<\/h2>\n<p>The\u00a0<strong>debitul de topire (MFR)\u00a0<\/strong>\u0219i\u00a0<strong>debitul volumic de topire (MVR)\u00a0<\/strong>sunt determinate prin extrudarea materialului topit din cilindrul unui plastometru printr-o matri\u021b\u0103 de lungime \u0219i diametru specificate, \u00een condi\u021bii prestabilite de temperatur\u0103 \u0219i sarcin\u0103. Pentru m\u0103surarea MFR (procedura A), segmente cronometrate din materialul extrudat sunt c\u00e2nt\u0103rite \u0219i utilizate pentru a calcula viteza de extrudare, exprimat\u0103 \u00een grame pe 10 minute. Pentru m\u0103surarea MVR (procedura B), se \u00eenregistreaz\u0103 distan\u021ba pe care pistonul o parcurge \u00eentr-un timp specificat sau timpul necesar pentru ca pistonul s\u0103 parcurg\u0103 o distan\u021b\u0103 specificat\u0103 \u0219i se utilizeaz\u0103 pentru a calcula rata de extrudare \u00een centimetri cubi pe 10 minute.<br \/>\nMVR poate fi convertit \u00een MFR, sau invers, dac\u0103 se cunoa\u0219te densitatea materialului \u00een stare topit\u0103 la temperatura de testare.<\/p>\n<h2>Utilizarea aparatului de m\u0103surare a debitului de topire<\/h2>\n<p><strong>Tester de debit de topire\u00a0<\/strong>poate fi utilizat pentru testarea materialelor plastice tehnice cu temperaturi de topire ridicate, precum polietilena, poliarilsulfona, fluoroplastice, nailon etc. De asemenea, este adecvat pentru materialele plastice cu temperaturi de topire mai sc\u0103zute, inclusiv polietilena, polistirenul, polipropilena, r\u0103\u0219ina ABS, r\u0103\u0219ina polioximetilenic\u0103 etc.<\/p>\n<h2>Specifica\u021bii ale aparatului de m\u0103surare a vitezei de curgere la topire<\/h2>\n<div class=\"table\">\n<table>\n<colgroup>\n<col \/>\n<col \/>\n<col span=\"2\" \/>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr>\n<td>Articole<\/td>\n<td colspan=\"5\">Parametrii<\/td>\n<\/tr>\n<tr>\n<td>Modele<\/td>\n<td>RZ-A<\/td>\n<td>RZ-B<\/td>\n<td>RZ-W<\/td>\n<td>RZ-C<\/td>\n<td>RZ-H<\/td>\n<\/tr>\n<tr>\n<td>Metoda<\/td>\n<td>MFR<\/td>\n<td colspan=\"4\">MFR \u0219i MVR<\/td>\n<\/tr>\n<tr>\n<td>Control\/Afi\u0219aj<\/td>\n<td>LED<\/td>\n<td colspan=\"2\">PLC, ecran tactil<\/td>\n<td>PC, ecran tactil, microprocesor<\/td>\n<td>RS485, USB, ecran tactil<\/td>\n<\/tr>\n<tr>\n<td>Software<\/td>\n<td colspan=\"3\">N\/A<\/td>\n<td>Da<\/td>\n<td>N\/A<\/td>\n<\/tr>\n<tr>\n<td>Microimprimant\u0103<\/td>\n<td>N\/A<\/td>\n<td>N\/A<\/td>\n<td colspan=\"3\">Da<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">Interval de m\u0103surare\/10 min<\/td>\n<td rowspan=\"2\">0,1\u2013400,00 g<\/td>\n<td colspan=\"2\">0,1\u2013800,00 g (MFR)<\/td>\n<td>0,1\u20133000,00 g (MFR)<\/td>\n<td>(0,01\u2013200) g (MFR)<\/td>\n<\/tr>\n<tr>\n<td colspan=\"2\">0,1\u2013800,00 cm\u00b3 (MVR)<\/td>\n<td>0,1\u20133000,00 cm\u00b3 (MVR)<\/td>\n<td>(0,1\u20132500) cm\u00b3 (MVR)<\/td>\n<\/tr>\n<tr>\n<td>Intervalul de temperatur\u0103<\/td>\n<td colspan=\"5\">Temperatur\u0103 ambiant\u0103 ~450 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Precizia temperaturii<\/td>\n<td colspan=\"2\">\u00b10,2 \u00b0C<\/td>\n<td>\u00b10.5\u00b0C<\/td>\n<td colspan=\"2\">\u00b10,2 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Precizia cronologic\u0103<\/td>\n<td>1S sau 0,01S<\/td>\n<td colspan=\"4\">0,1 s<\/td>\n<\/tr>\n<tr>\n<td>Precizia deplas\u0103rii<\/td>\n<td colspan=\"5\">0.01mm<\/td>\n<\/tr>\n<tr>\n<td>Sarcina nominal\u0103<\/td>\n<td colspan=\"5\">0,325 kg, 1,200 kg, 2,160 kg, 3,800 kg, 5,000 kg, 10,000 kg, 21,600 kg<\/td>\n<\/tr>\n<tr>\n<td>Modul de t\u0103iere<\/td>\n<td>Manual, Timp<\/td>\n<td colspan=\"2\">Manual, Timp, Automat<\/td>\n<td colspan=\"2\">Electric (automat)<\/td>\n<\/tr>\n<tr>\n<td>Diametrul interior al cilindrului<\/td>\n<td colspan=\"5\">9,550 mm \u00b1 0,025 mm<\/td>\n<\/tr>\n<tr>\n<td>Lungimea cilindrului<\/td>\n<td colspan=\"5\">160 mm<\/td>\n<\/tr>\n<tr>\n<td>Moarte<\/td>\n<td colspan=\"5\">Carbur\u0103 de tungsten, L 8,000 mm \u00b1 0,025 mm, diametru interior 2,095 mm \u00b1 0,005 mm<\/td>\n<\/tr>\n<tr>\n<td>Putere<\/td>\n<td colspan=\"3\">0,45 kW<\/td>\n<td>0,5 kW<\/td>\n<td>0,45 kW<\/td>\n<\/tr>\n<tr>\n<td>Surs\u0103 de alimentare<\/td>\n<td colspan=\"5\">220 V c.a., 50 Hz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\nStandarde pentru aparatul de m\u0103surare a vitezei de curgere<\/h2>\n<p>ISO 1133-2, ISO 1133-1, ASTM D1238, GB\/T 3682.1, GB\/T 3682.2, GB\/T 18742, JB\/T 5456<\/p>\n<h2>\u00centreb\u0103ri frecvente despre aparatul de m\u0103surare a vitezei de curgere<\/h2>\n<p><strong>1. Ce este debitul de topitur\u0103 sau MFR?<\/strong><br \/>\nDebitul de extrudare al unei r\u0103\u0219ini topite printr-o matri\u021b\u0103 cu lungime \u0219i diametru specificate, \u00een condi\u021bii prestabilite de temperatur\u0103, sarcin\u0103 \u0219i pozi\u021bie a pistonului \u00een cilindrul unui plastometru de extrudare; acest debit se determin\u0103 ca masa extrudat\u0103 \u00eentr-un interval de timp specificat. MFR se exprim\u0103 \u00een grame pe 10 minute. Unit\u0103\u021bile alternative acceptate de SI sunt decigrame pe minut, unde 1 g\/10 min este echivalent cu 1 dg\/min.<\/p>\n<p><strong>2. Ce este debitul volumic de topire (MVR)?<\/strong><br \/>\nDebitul de extrudare al unei r\u0103\u0219ini topite printr-o matri\u021b\u0103 cu lungime \u0219i diametru specificate, \u00een condi\u021bii prestabilite de temperatur\u0103, sarcin\u0103 \u0219i pozi\u021bie a pistonului \u00een cilindrul unui plastometru de extrudare; acest debit este determinat ca volumul extrudat \u00eentr-un interval de timp specificat; MVR se exprim\u0103 \u00een centimetri cubi pe 10 minute.<\/p>\n<p><strong>3. Ce \u00eenseamn\u0103 termenul \u201csarcin\u0103\u201d \u00een cadrul testelor MFR \u0219i MVR?<\/strong><br \/>\n\u00cen cadrul \u00eencerc\u0103rilor MFR \u0219i MVR, termenul \u201dsarcin\u0103\u201d se refer\u0103 la for\u021ba combinat\u0103 exercitat\u0103 de masa pistonului \u0219i de greutatea sau greut\u0103\u021bile ad\u0103ugate, conform condi\u021biilor de \u00eencercare.<br \/>\nSarcina este exprimat\u0103 prin masa, \u00een kilograme, care o exercit\u0103.<\/p>\n<p><strong>4. \u00cen ce situa\u021bii este MVR deosebit de util?<\/strong><br \/>\nMVR este deosebit de util atunci c\u00e2nd se compar\u0103 materiale cu con\u021binut diferit de umplutur\u0103 \u0219i atunci c\u00e2nd se compar\u0103 materialele termoplastice cu umplutur\u0103 cu cele f\u0103r\u0103 umplutur\u0103.<\/p>\n<p><strong>5. Se poate determina MFR pe baza m\u0103sur\u0103torilor MVR sau invers?<\/strong><br \/>\nDa, at\u00e2t MFR, c\u00e2t \u0219i MVR pot fi calculate una pe baza celeilalte, cu condi\u021bia ca densitatea topiturii la temperatura de testare s\u0103 fie cunoscut\u0103.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.materialstests.com\/ro\/\"><strong>Cell Instruments<\/strong><\/a>\u00a0s-a pozi\u021bionat nu numai ca produc\u0103tor de echipamente de testare de ultim\u0103 genera\u021bie, ci \u0219i ca partener strategic \u00een succesul afacerilor din \u00eentreaga lume. Echipa noastr\u0103 dedicat\u0103, echipat\u0103 cu o gam\u0103 variat\u0103 de expertiz\u0103, colaboreaz\u0103 neobosit pentru a se asigura c\u0103 clien\u021bii no\u0219tri primesc nu doar produse, ci \u0219i solu\u021bii complete care le sporesc eficien\u021ba, calitatea produselor \u0219i competitivitatea general\u0103.\u00a0<a href=\"https:\/\/www.materialstests.com\/ro\/contact-us.html\/\"><strong>Bine a\u021bi venit la consultare!<\/strong><\/a><\/p>\n<p><strong><a href=\"https:\/\/www.materialstests.com\/ro\/contact-us.html\/\"><img decoding=\"async\" title=\"Tester de debit de topire\" src=\"https:\/\/image.chukouplus.com\/upload\/C_4083\/file\/20240626\/fa2049e45fd04d64d8dbb63dfdf8c946.png?1\" alt=\"Tester de debit de topire\" \/><\/a><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction of\u00a0Melt Flow Rate Tester Melt Flow Rate Tester\u00a0is used for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. It includes two test procedures of mass-measurement method and displacement-measurement method. Engineering plastics and general plastics testing: It can be [&hellip;]<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"products-categories":[1523,1522],"productstags":[],"standard-category":[],"class_list":["post-3022","products","type-products","status-publish","hentry","products-categories-melt-flow-rate-tester","products-categories-plastics-testing"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products\/3022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/types\/products"}],"version-history":[{"count":0,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products\/3022\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/media?parent=3022"}],"wp:term":[{"taxonomy":"products-categories","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/products-categories?post=3022"},{"taxonomy":"productstags","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/productstags?post=3022"},{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.materialstests.com\/ro\/wp-json\/wp\/v2\/standard-category?post=3022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}