{"id":816,"date":"2025-01-06T03:28:04","date_gmt":"2025-01-06T03:28:04","guid":{"rendered":"https:\/\/www.ylfastener.com\/?p=816"},"modified":"2025-01-06T03:28:04","modified_gmt":"2025-01-06T03:28:04","slug":"coarse-threads-vs-fine-threads","status":"publish","type":"post","link":"https:\/\/www.ylfastener.com\/hr\/coarse-threads-vs-fine-threads\/","title":{"rendered":"Grube niti fine niti"},"content":{"rendered":"<p>\u0160to je bolje, grube ili fine niti? Ovo je pitanje koje se \u010desto \u010duje u na\u0161oj tvrtki\u00a0u vezi s umetcima i spojnicama s mu\u0161kim navojem, a na\u0161e je mi\u0161ljenje da grubi navoji imaju mnoge prednosti i prednosti u odnosu na fine navoje.<\/p>\n<h2><strong><b>Grube niti<\/b><\/strong><\/h2>\n<p>Grubi konci su izdr\u017eljiviji i imaju ve\u0107u otpornost na skidanje i popre\u010dno navla\u010denje. Visina svakog navoja ve\u0107a je od odgovaraju\u0107eg finog navoja, tako da postoji vi\u0161e materijala izme\u0111u svakog navoja \u0161to pove\u0107ava bo\u010dni anga\u017eman.<\/p>\n<p>Grubi konci manje su osjetljivi na urezivanje ili o\u0161te\u0107enje, tako da se s njima ne mora \"pa\u017eljivo rukovati\" kao s finim nitima. Zarez na finom koncu mo\u017ee uzrokovati vi\u0161e problema proporcionalno zbog plitkog konca, npr. mjerenje ili monta\u017ea.<\/p>\n<p>Spojnice s grubim navojem postavljaju se puno br\u017ee od spojnica s finim navojem. Vijak\u00a01\/2\u201d-13\u00a0UNC\u00a0sastavlja se u 65% vremena potrebnom za sastavljanje vijka\u00a01\/2\u201d-20UNF\u00a0. 1\/2\u201d-20UNF\u00a0vijak napreduje jedan in\u010d u 20 okretaja, dok 1\/2\u201d-13UNC\u00a0vijak napreduje jedan in\u010d u samo 13 okretaja.<\/p>\n<p>Na grube niti ne utje\u010de toliko nakupljanje galvanizacije kao na fine niti. Ista koli\u010dina oplate na gruboj niti potro\u0161ila bi ve\u0107u koli\u010dinu oplata na finoj niti. Fini navoji imaju vi\u0161e problema s mjerenjem i sastavljanjem zbog nakupljanja oplate nego grubi navoji, jer ima manje materijala izme\u0111u svake strane navoja.<\/p>\n<p>Kada koristite umetke za zaklju\u010davanje ili druge spojne elemente s navojima, mnogo je manja vjerojatnost da \u0107e grubi navoji do\u017eivjeti trganje nego fini navoji. Fini navoji imaju vi\u0161e rotacija kao \u0161to smo ranije spomenuli, a to zajedno s bli\u017eim pristajanjem promjera finih navoja pove\u0107ava tendenciju finih navoja da do\u017eive nagrizanje navoja.<\/p>\n<h2><strong><b>Fine niti<\/b><\/strong><\/h2>\n<p>Vijci s finim navojem ja\u010di su od odgovaraju\u0107ih vijaka s grubim navojem iste tvrdo\u0107e. To je i kod napetosti i kod smicanja zbog vijaka s finim navojem koji imaju ne\u0161to ve\u0107e podru\u010dje vla\u010dnog naprezanja i manji promjer.<\/p>\n<p>Fine niti imaju manju tendenciju popu\u0161tanja pod vibracijama jer imaju manji kut zavojnice od grubih niti. Zavojnice za dr\u017eanje umetka s finim navojem fleksibilnije su od zavojnica s umetcima s grubim navojem odgovaraju\u0107e veli\u010dine i manje je vjerojatno da \u0107e izdr\u017eati set u uvjetima vibracija.<\/p>\n<p>Fini navoji zbog svog finijeg koraka omogu\u0107uju finije prilagodbe u onim primjenama kojima je potrebna ova karakteristika.<\/p>\n<p>Fini navoji mogu se lak\u0161e urezati u materijale koji se te\u0161ko urezuju i tanke dijelove.<\/p>\n<p>Fini navoji zahtijevaju manji moment zatezanja za razvoj ekvivalentnih prednaprezanja za odgovaraju\u0107e veli\u010dine vijaka s grubim navojem.<\/p>\n<h2><strong><b>Sa\u017eetak<\/b><\/strong><\/h2>\n<p>Obi\u010dno je grubi navoj specificiran za ve\u0107inu industrijskih primjena osim ako postoji uvjerljiv razlog da se to ne u\u010dini. Vojne i zrakoplovne primjene op\u0107enito koriste grube niti na veli\u010dinama 8-32 i manjim. Na metri\u010dkim pri\u010dvr\u0161\u0107iva\u010dima op\u0107enito se naj\u010de\u0161\u0107e koriste grube veli\u010dine, dok su finiji razmaci manje dostupni.<\/p>","protected":false},"excerpt":{"rendered":"<p>Which is better, coarse threads or fine threads? This is a frequently heard question at our company\u00a0relative to both inserts and male threaded fasteners, and it is our opinion that coarse threads have many advantages and benefits over fine threads. Coarse Threads Coarse threads are more durable and have greater resistance to stripping and cross-threading. [\u2026]<\/p>","protected":false},"author":1,"featured_media":340,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.11 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Coarse Threads vs. Fine Threads - HANDAN YANLANG FASTENER CO., LTD<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ylfastener.com\/hr\/coarse-threads-vs-fine-threads\/\" \/>\n<meta property=\"og:locale\" content=\"hr_HR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Coarse Threads vs. Fine Threads - HANDAN YANLANG FASTENER CO., LTD\" \/>\n<meta property=\"og:description\" content=\"Which is better, coarse threads or fine threads? This is a frequently heard question at our company\u00a0relative to both inserts and male threaded fasteners, and it is our opinion that coarse threads have many advantages and benefits over fine threads. Coarse Threads Coarse threads are more durable and have greater resistance to stripping and cross-threading. 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