Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:625984fc39d21ea89335466dd950d308'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:1279:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Do sada sam pri MIG zavarivanju toplovaljananih limova 3mm imao prilično problema<br />\\nsa onom crnom površinskom zaštitom na njima. Ako je ne skinem kako treba postojao je velik<br />\\nrizik od \\"nalepljivanja\\" pogotovo na manjem naponu luka. </p>\\n<p>Ta zaštita se ponekad baš teško skida sa lepezastim brusnim ploičama na brusilici kada listići šmirgle<br />\\nn in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:b50ca055fb7c594a035c9fadad4a8c90'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:2074:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Pravilna primrema svih crnih materijala se svodi na manje više isto .<br />\\nDakle prvo ukloniti masnocu sa materijala , načina je mnogo od nitro razredkivača , acetona pa do namenskih čistača kao što je <a href=\\"http://house.rs/product/cistac-s/\\" title=\\"http://house.rs/product/cistac-s/\\"><a href=\\"http://house.rs/product/cistac-s/\\">http://house.r in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:f37d6a905ef62dfb1fc58173a5704d2f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:406:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Од свих машина, најволијем Веселу Машину<br />\\nА и ЛУГЕР П08</p>\\n ', created = 1748702368, expire = 1748788768, headers = '', serialized = 0 WHERE cid = '1:f37d6a905ef62dfb1fc58173a5704d2f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:108;}&# in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '3:b23876703b135025219247289402ae6d'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:876:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p><a href=\\"https://www.facebook.com/tenzor1/\\" title=\\"https://www.facebook.com/tenzor1/\\">https://www.facebook.com/tenzor1/</a><br />\\n<a href=\\"https://tenzorisanje.wordpress.com/\\" title=\\"https://tenzorisanje.wordpress.com/\\">https://tenzorisanje.wordpress.com/</a><br />\\n<a href=\\"h in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:af18e24232534745a417c70f2b136e87'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:895:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Hvala Tenzor,</p>\\n<p>Zaista mi je korisna informacija o dodavanju regulatora brzine na ručnu brusilicu.<br />\\nKoliko se sećam ta mala brusilica 115mm radi na čitavih 11000 RPM<br />\\nNaći ču nekoga ko može da mi reši takav regulator brzine.</p>\\n<p>Potpuno se slažem da na efekat nalepljivanja utiču i parametri zavarivanja<br />\\nali to bih za sada ostavi in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:d3b3d92ae293ded87790eac29a31394f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:1787:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Pogrešno ste me razumeli . Ne radi se o \\"preradi \\" ili dodavanju uredjaja za promenu broja obrtaja , već se radi o brusilici koja to ima fabrički ugradjeno . Daleko od toga da ne možete nabudziti i svoju brusilici ali će biti više štete nego koristi . Jednostavno brusilica sa potenciometrom ima drugačije koncipiran ventilator , zaštitu namotaja ... Ovaj model je sa potenciometrom <a href=\\"http://www.prodavni in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:f37d6a905ef62dfb1fc58173a5704d2f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:406:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Од свих машина, најволијем Веселу Машину<br />\\nА и ЛУГЕР П08</p>\\n ', created = 1748702368, expire = 1748788768, headers = '', serialized = 0 WHERE cid = '1:f37d6a905ef62dfb1fc58173a5704d2f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:108;}&# in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '3:b23876703b135025219247289402ae6d'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:876:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p><a href=\\"https://www.facebook.com/tenzor1/\\" title=\\"https://www.facebook.com/tenzor1/\\">https://www.facebook.com/tenzor1/</a><br />\\n<a href=\\"https://tenzorisanje.wordpress.com/\\" title=\\"https://tenzorisanje.wordpress.com/\\">https://tenzorisanje.wordpress.com/</a><br />\\n<a href=\\"h in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:3266e9b674c49f24b13e40cc8811c871'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:2097:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Ima sda se kupe AC regulatori (koristim ga za mali strug, drugi je u og kutiji za ostale kolektorske masine) koji su dobri za kolektorske masine, nisu skupi na aliexpresu, ali ih ima i na kupujem prodajem.<br />\\n<a href=\\"https://www.aliexpress.com/item/AC-220V-2000W-SCR-Electronic-Voltage-Regulator-Speed-Controller-Dimming-Dimmer-Thermostat-FEN/32776818218.html?spm=2114.search0104.3.8.58f7e1cdhktPlg&ws_ab_test=searchweb in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '3:2931e432294a1643b5ed309e8d1117fc'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:386:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Знам да незнам, а све што знам научио сам од неког.</p>\\n ', created = 1748702368, expire = 1748788768, headers = '', serialized = 0 WHERE cid = '3:2931e432294a1643b5ed309e8d1117fc'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:108;}', 3, '', ' in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:96b281c23d04c9b8991c39feb5421f4f'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:1291:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Tenzor,<br />\\nJoš me nešto zanima kod hladnovaljanog lima.</p>\\n<p>Koliko sam ja uspeo proguglati, to su limovi sa niskim sadržajem ugljenika.<br />\\nDa li to znači da su manje skloni površinskom zakaljivanju kod rezanja plazma postupkom u odnosu na TV lim ?<br />\\nU pitanju je najobičnija plazma koja koristi vazduh kao gas za rezanje.<br />\\nPretpostavljam da dolazi do in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:195:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: SELECT data, created, headers, expire, serialized FROM cache_filter WHERE cid = '1:fa387e2fd1fb278827bf8ecc684c8dce'\";s:5:\"%file\";s:76:\"/home/admin/domains/samsvojmajstor.com/public_html/portal/includes/cache.inc\";s:5:\"%line\";i:25;}', 3, '', 'http://www.samsvojmajstor.com/portal/forums/uradi-sam/bravarija/obrada-limova', '', '172.71.195.75', 1748702368) in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

Warning: File './ssm_restore/watchdog.MYD' not found (Errcode: 13) query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:1618:\"Table 'ssm_restore.cache_filter' doesn't exist\nquery: UPDATE cache_filter SET data = ' <p></p><p>Kao što sam Vam već napomenuo tema koja vas zanima ne spada u nešto što možete izguglati u \\"dajdžest \\" formi . Ako se vec radi pripremna rupa npr na plazmi ili gasnom rezaču , onda je tu svakako upotreba bušilica i burgija problematitična , ne toliko zbog tvrdoće materijala ili kako vi kažete \\" zakaljivanja \\" ili \\"nitiriranja \\" već je problem u geometriji i rupe ali i alata za b in /home/admin/domains/samsvojmajstor.com/public_html/portal/includes/database.mysql.inc on line 135

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Obrada limova

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Sat, 20/01/2018 - 11:26
Obrada limova
#1
Calimero
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Do sada sam pri MIG zavarivanju toplovaljananih limova 3mm imao prilično problema
sa onom crnom površinskom zaštitom na njima. Ako je ne skinem kako treba postojao je velik
rizik od "nalepljivanja" pogotovo na manjem naponu luka.

Ta zaštita se ponekad baš teško skida sa lepezastim brusnim ploičama na brusilici kada listići šmirgle
nisu novi, već delimično potrošeni. Samo se UGLAČA taj crni površinski sloj i baš se moram pomučiti
da ga skinem.

Moja pitanja:

1. Kako se tačno zove ta zaštita, nekoliko reči o njoij ... i kako najlakše pripremiti limene delove za MIG zavarivanje ?
2. Da li bi bolje prošao sa upotrebom hladno valjanag lima 3mm ( nema veze što je nešto skuplji ) ?
3. Koje su sve razlike izmejdu toplo i hladno valjanih limova i kod ostalih postupaka obrade metala ?

Pozz

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Sat, 20/01/2018 - 15:18
Pravilna primrema svih crnih
#2
tenzor
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Pravilna primrema svih crnih materijala se svodi na manje više isto .
Dakle prvo ukloniti masnocu sa materijala , načina je mnogo od nitro razredkivača , acetona pa do namenskih čistača kao što je http://house.rs/product/cistac-s/ . Ja ovaj sa linka lično koristim . Sledeće je obrada materijala na "beli sjaj " , ono što vas verovatno muči je prevelika brizna obratanja brusilice , jel ti svi lamelni diskovi kao i diskovi za čišćennje treba da rade na mnogo manjem broju obrtaja reda veličina 4000 obrtaja i manje , dakle treba vam brusilica sa promenom obrtaja tj sa potenciometrom . I naravno svi diskovi da budu u kvalitetu jesu skuplji , ali su mnogo bolji i dugotrajniji , dakle najbolja dobitna kombinacija je brusilica sa potenciometrom i disk (Pferd , Wurth , Tyrolit ,Klingspor ..) . Postoje joč i namenski diskovi za čišćenje kao što je http://www.prodavnicaalata.rs/sr/proizvod/disk-za-ciscenje-n377-best-for... ali su oni gotovo neupotrebljivi ako nemate brusilicu sa potenciometrom .
Ako ste pažljivi možete i sa klasičnim brusnom pločom da očistite površine , ali bez prevelikog pritiska .
Takodje problem naplepljivanja , pucni i prskanja ima veze i štelovanjem aparata , vrstom i količinom gasa , vrstom "žice " .

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Sat, 20/01/2018 - 21:18
Hvala Tenzor, Zaista mi je
#3
Calimero
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Hvala Tenzor,

Zaista mi je korisna informacija o dodavanju regulatora brzine na ručnu brusilicu.
Koliko se sećam ta mala brusilica 115mm radi na čitavih 11000 RPM
Naći ču nekoga ko može da mi reši takav regulator brzine.

Potpuno se slažem da na efekat nalepljivanja utiču i parametri zavarivanja
ali to bih za sada ostavio po strani.

****

Nadam se da ću dobiti i odgovor na drugi deo pitanja, odnosno
upotrebu hladnovaljanih limova.

Pozz

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Sat, 20/01/2018 - 23:20
Pogrešno ste me razumeli .
#4
tenzor
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Pogrešno ste me razumeli . Ne radi se o "preradi " ili dodavanju uredjaja za promenu broja obrtaja , već se radi o brusilici koja to ima fabrički ugradjeno . Daleko od toga da ne možete nabudziti i svoju brusilici ali će biti više štete nego koristi . Jednostavno brusilica sa potenciometrom ima drugačije koncipiran ventilator , zaštitu namotaja ... Ovaj model je sa potenciometrom http://www.prodavnicaalata.rs/sr/proizvod/ugaona-brusilica-bosch-15-125-....
Što se metalurgije tiče nakraće rečeno HV limovi se rade u postupku valjanja na hladno a samim tim imaju manje uključaka , okujine i slično .HV limovi imaju ravniju povšinu , pogodni su za zavarivanje Inače se HV limovi dobijaju iz TV limova ili ploča ali postupkom dalje obrade na hladno . TV limovi se obradjuju na temperaturama iznad 900 stepeni što uključuje i ne baš glatku površinu i mnogo primesa . Upravo zbog toga se TV limovi i teže čiste . O ostalom u vezi mašisnkih materijala morate već pročitati par knjiga Smile

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Sun, 21/01/2018 - 10:52
Ima sda se kupe AC regulatori
#5
branimir
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Ima sda se kupe AC regulatori (koristim ga za mali strug, drugi je u og kutiji za ostale kolektorske masine) koji su dobri za kolektorske masine, nisu skupi na aliexpresu, ali ih ima i na kupujem prodajem.
https://www.aliexpress.com/item/AC-220V-2000W-SCR-Electronic-Voltage-Reg...
https://www.kupujemprodajem.com/Regulator-AC-napona-od-50-do-230V-2000W-...

Знам да незнам, а све што знам научио сам од неког.

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Sun, 21/01/2018 - 12:11
Tenzor, Još me nešto zanima
#6
Calimero
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Tenzor,
Još me nešto zanima kod hladnovaljanog lima.

Koliko sam ja uspeo proguglati, to su limovi sa niskim sadržajem ugljenika.
Da li to znači da su manje skloni površinskom zakaljivanju kod rezanja plazma postupkom u odnosu na TV lim ?
U pitanju je najobičnija plazma koja koristi vazduh kao gas za rezanje.
Pretpostavljam da dolazi do nitriranja površine usled velikog udela azota u vazduhu ...

To kako ja kažem "zakaljivanje" stvara kasnije dosta problema kada recimo treba probušiti (formirat) rupu bušilicom
na prethodno izrezanoj rupi ( ili samo probijenom centru za rupu) na CNC plazmi

Šta mi je po ovom pitanju bolje : TV lim ili HV lim ?

***
Slažem se da je svakako bolja opcija fabrička brusilica sa regulacijom broja obrtaja.
Nije jeftin taj Boš, videćemo ...

Pozz

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Sun, 21/01/2018 - 19:13
Kao što sam Vam već napomenuo
#7
tenzor
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Kao što sam Vam već napomenuo tema koja vas zanima ne spada u nešto što možete izguglati u "dajdžest " formi . Ako se vec radi pripremna rupa npr na plazmi ili gasnom rezaču , onda je tu svakako upotreba bušilica i burgija problematitična , ne toliko zbog tvrdoće materijala ili kako vi kažete " zakaljivanja " ili "nitiriranja " već je problem u geometriji i rupe ali i alata za bušenje . Postoje burgije koje buše alatne čelike kao sir a pogon su im baterijske šrafilice , tako da tvrdoća materijala i nema neke veze . Dakle vama ostaju dve varijante ili da na cnc plazmi radite precizniju rupu pa je doradite razvrtačem , konusnim glodalima ... Ili preskočite tu radnju na plazmi pa radite klasično bušenje i eventualnu doradu razvrtačima ili radite probijanje rupe na matricu i trn .
Izbor materijala se vrši prema nameni toga nečega što pravite , a ne prema obradljivosti samog materijala . Ja nažalost nisam vidovit da mogu da vam kažem unapred koji je materijal bolji za vas ili vašu proizvodnju /hobi . Podela na TV i HV limove je jako glomazna i uopštena , i u tu podelu spada mnogo raznorodnih materijala . Kod crnih materijala je maltene zagarantovan samo sadržaj sumpora a sve ostalo je " od -do "

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Mon, 22/01/2018 - 16:09
Potpuno si u pravu
#8
Calimero
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Potpuno si u pravu Tenzor,

Ali pošto meni zaista nije bitan kvalitet čeličnog lima za moju primenu, krenuo sam baš "kontra metodom".
Odnosno koji materijal je lakše obradiv kroz dva kriterijuma:

1. Priprema do belog sjaja zbog MIG zavarivanja ( Sa Mix gasom Feroline 18)
2. Koji se manje zakaljuje ( TV ili HV 3mm) zbog kasnije obrade rupa

Nijedna low cost CNC plazma ne može izbušiti preciznu rupu manjeg prečnika recimo 8mm.
Drugo su HiFocus plazme itd ,,,

Znači geomatriju rupe imam lošu pa lošu i tu ne mogu ništa učiniti.
Jedino što umesto rupe mogu plazmom označiti samo centar koji kasnije ostaje vodilja za bušenje
To se bolje pokazalo nego isecanje rupe plazmom pa onda samo dorada na meru.

Veći mi je problem zakaljene ivice.
Koristi sam vidija burgije za metal u kombinaciji sa zelenim DORMER uljem.
Ide to nekako.

Znam da ne mogu izguglati nigde sažet odgovor na moja pitanja ...

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Thu, 22/02/2018 - 06:24
hot roll- toplo valjano je
#9
zakcoske
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Registrovan dana: 25/03/2016
Poruke:

hot roll- toplo valjano je mekse i limovi nisu precizne debljine i lakse se oblikuje . cold roll -hladno valjanje se koristi radi dobijanja preciznije debljine i tvrdje je za nekih 20%. .Za busenje rupa , magnetna busilica za vece table ili stabilnija stubna busilica za manje komade. Ovakve burgije mi koristimo sa magnetnom busilicom kad su u pitanju veci komadi, a i obicne burgije ako su manje rupe. Da bi se izbeglo kaljenje pri secenju ,koristi se waterjet (sece sa vodom) .

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