CS264034B1 - Power supply for electric arc welding - Google Patents

Abstract

The goal of the solution is. quality improvement the welded joint by means of security pulsation coefficient when changing the average welding current. In power supply for electric welding the control block is executed by arc in the form of three interrelated controls (12), maximum (10) and minimum (11) and is provided with a switch (9) the level connecting the maximum drivers (101 and minimum (11) current with comparator input (8) whose output · is connected to a semiconductor control block (7) Gate Switch Circuit (3) a via switch (9) levels with your input.

Description

- 1 264034 30ΠΚΟΑΗΗΕ H30EPETEHHÍI K ABTOPCKOMY CBHflETEJIECTBY3aHBneHo: 13.01.843á «BKa 3688229 / 25-27MKH * B 23 K 9/00, 9/10

Abtoph: B.B.Cmhphob, A.4> .rap6yjih, B.H, 3aKC h E.A.KaraHCKHn

3aaBHTenb: Bcecoio3Hbi HaynHo-HccjieaoBaTejibCKHft προβκτΗΟ-κοΗΟτρνκτοροκΗήH ΤβΧΗΟΠΟΓΗΗβΟΚΗΗ HHCTHTyT 3JieKTpOCBapOHHOrO o6opyHOBaHHH

Haasaime Η3θ6ρβτβΗΗΗ: HCTOHHHK ΠΗΤΑΗΗΗ flJIJI OJIEKTPOflYTOBOfi CBAPKH H3o6peTéHne othochtch to očnacTH flyroBoň cbhpkh h b nacTHocTH, κ-yHHBep CaJIbHblM OffHO- HJ1H MMOronOCTOBblM HCTOHHHKaM ΠΗΤΒΗΗΗ flJIH pa3JlHHHblX CnOCoSOBCBapKH Ha nOCTOHHHOM FOBT.

Henbw Η3θ6ρετβΗΗΗ HBJíaeTCB noBbnneHHe KanecTBa CBapHoro coeflHHeHHfl h pac-HttipeHHe OČJiaCTH ΠρΗΜβΗβΗΗΗ nonynpOBOHHHKOBblX KJHOHeBbtX HCTOHHHKOB Ha npopeCCMexaHH3HpoBaHHoň CBapKH b cpefle 3AN (HTBbix ra3OB Nyree co3flaHHH hctohhhkh cnoCTOHHHHM SaflaHHblM ΚΟ3φφΗΐχΗβΗΤΟΜ nyJIbCaHHÍÍ T0K3 NPH Η3ΜΘΗβΗΗΗ CpeaHerO 3HaneHHH cBapOHHoro Tokai b πμροκηχ npeflenax bo ΒρβΜβΗκ ηπη nOFL BO3fleňcTBHeM -flpyrnx napaMeTpOB peaoíMa CBapKH, and TaK »e noBbnoeHne Hafle» HocTH h cHHxeHHeypoBHH rayMá flyrn.

Ha Φηγ. 1 npep; cTaBJieHa cxeMa npefpiaraeMoro ηοτοπηηκη πητηηηη; on Φηγ.2 -npHMepw peanH3aiaiH oTflenbHbix 6jiokob npeflnaraeMoro ycT leastcTBaj Ha Φηγ.3 -,

BpeMeHHbie xapaKŤepucTHKH CBaponnoro τοκβ 88 h Hanpn »eHHn aa / jatam Uj Ha bxofle KOMnapaTopa; Ha .4ηγ.4 - BpeMeHHbie xapaKTepHCTHKH CBapouHoro TOO hHanpnaceHHH flyrn U πρκ apronoflyroBoň cBapKe (a) h MexaHH3HpoBaHHOft CBapxe b, 3amHTHbix raeax (6); to γηγ, 5 - npHMepw ηοποπηθηηη ηοτοπηηκη c HecKOJiBKHMHperynaTopaMH Toxa. HCTOHHHK ΠΗΤΗΗΗΠ (φΗΓ.1) COflepSCHT HeynpaBJIHeMblH CBapOHHblH BbnipHMHTeflb 1H oflHH ηπη necKonbKO perynnTopoB CBapoÁHoro Tokai PeryiiHTop 2 CBapOHHoro that Ka conepwHT chjioboh nonynpoBOflHHKOBwň kjhoh 3 myHT 4 flpoccenb 5 flHOfl (ηπη! FlHOHbí) 6 oĎpaTHoro Tokai 6ποκ 7 ynpaBJteHHH 3aMbiKaHHeM h ^ pa3MMKaHHeM nonynpoBo HHKOBoro Kriwna, KOMnapaTop 8, 9 nepeicnKwaTenb ypoBHeň, coeflHHHwmHň 3aflar 2 264 034 hhkh MaKCHMajibiioro 10h MHHHManbHoro 11 ypoBHeň Tokai c βχοβ, ομ KOMnapaTopa, η 6ποκ 3a # 12 a'rqnK cpeflHero 3HaneHHa cBaponnoro m, 2 PerynaTOp CBapoHHO- ro TOKa noflKjironeH κ CBaponHOMy sneKTpony 13 η η3η & γτηκ> · 14. tomοητροποημμη tom-K3MH cxeílbj HB.nHK) TCH TOHKH 15 —19.

BjioK-saxiaTMHK 12 b npocTenmeM cnynae npeflCTaBnaeT co6oň ποτεΗΙΒίΟΜετρ 20 (ηη.2), c κοτορογο CHHMaeTca noTeHUHanbHbiH curnan 3ap, auHa, nponopnuoHanb-HblH CpeWHBMy CBapOHHOMy TOKY

Uy cp = ΠΗΜΠΠCTΛΒΗΟΛΒΗΟCTCTCTCTCTCTCTCTCTCTCTCTCTapapapapapapapapJJJJJJ n n n n napapapapapapapapapapapapapapapapapapapapapapJJJJJJΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗΜΘΗΘΗΗΗ. = f (t): njiaBHoe HapacTaHHe h cnanaHHe τοκ3, HMnynbCHbie ρεκΗΜΗ h flpyrnenporpaMMH. ΠρΗΜΘΗΗΤΘΠΒΗΟ The HCTOHHHKy ΠΗΤΗΗΗΗ «SOUTH MexaHH3TtpOBaHHOH CBapKH B3aDjHTHbix ra3ax Cp πρερ, στβΒΠΗβτ co6oň ycnnenHyra h crnajKeHHyio pa3HocTb CUR-Hajioe: cHrnana, BBefleHHoro flononHHTejibHO b cxeMy 3aflaTHHKa cpeaHero 3Hane-hhh nanpjDKfiHHH now Uy h cHrHajia ofípaTHoň cbbbh well HanpaxeHHio flyra UH, ciiHMaeMoro, ηο flpoccena 5 b τοηκβχ 15 h 18 (φΗΓ.1). Táxoe HcnonHCHHe 3aflaTHH ~ Ka 12 πο3Βθ.ΠΗβτ nonynHTb «cecTKne BHemHue xapaKTepHCTHKH ηπη nonoronanawmHexapaKTepHCTHKH TpeSyeMoň KpyTH3Hbi. B oTflenbHbix cnynaHx UyCp Μοκετ 6ητβ curHanoM, CHHMaeMbiM aHanoro-c-ιρίφρο'boto npeo6pa3OBaTenH οηεκτροΗΗοή BbwncJiHTenbHóň MaiíMHbí, Βηοκ Μ0 11 »βτ 6biTb BbmojiHeH Ha p63HCthbhmx flejiHTenHx 21, 22-η pe3HCT0 PE 23. Βηοκ Μ0 10» βτ 6biTb BbmonneH Ha onepauj- ioHHOM ycroiHTene 24 h pe3HCTopax 25.26, 27, 28 (.2ηγ.2). 9ποκ 9 6όχβτ 6μτβ βμποπηθη on TpaH3HCTopax 29 h 30, flHoflax 31 h 32, pe-3HCTopax 33 h 34 h cxeMe 35 ΗΗΒερτΗροΒΗΗΗη cHrnana.

3axHM - OflHy «3 κοητροηβημο τοίθε 16, bm-xoflHo 3axcHM 19 ηόπριή 3axoiM 15. 3ajKHMaMH 15h 16 perynaTop noflipnoneH κ 3a-Μί · ΗΜ (+) H (-) CBapOHHOrO jΠρΗΜΗΤεΠΗ 1 j 333ΚΗΜ3ΜΗ 15 Η 19 CB OH ap y ap α α «« «« 14. Π H α α α α α H H H H H H H H H H H H H H H H H H H H H H BHfla CBapKH. A 3a »CHM 15 NOFlKOHJHHHOHlHblH BblBOFliflHOflOB 6 OTHER THERAPY TOKa; K 3a «HMy 16 - Of HH H3 HbIBOflOB nonynpOBOflHHKOBOrOKrnova 3. OSbeflHHeHHbie Me» fly co6oh βτοροη buboa nonynpoBOflHHKoBoro Katona 3 Hi KaTOflHbi BbiBOfl flHOflOB 6 noflCoeflHHeHbí κ βθτβη; oiyHT 4 - flpoccenb 5 - CBapon-Hbtíi sjíeKTpofl 13th Penny ynpaBJíeHHB nonynpoBOflHHKoBoro Kmona 3 noflCoetflHHeH βμχοα 6noKa 7ynpaBJíeHHH 3aMbiKaHHeM h pa3MbiKa «HGM nonynpoBOflHHKoBoro Katona 3. Bxofly6no Ka-7 ποβκπιοΗβΗ Bbixofl KOMnapaTopa 8. Bxofly KOMnapaTopa 8 noflKnioneHmyHT 4 H 9 nepeKnKwaTenb ypoBHen, κ κοτοροΜγ noflKnwneHbi 3-afhTHH-kh MaKCHManbHoro 10 h MHHHManbHoro 11 ypoBHen TOKa. To 33A3τ.ηηκόβ 10h 11 ποακαιοηθη 3aflaTnHK 12 cpeflHero 3HaneHHa CBaponnoro τοκη. No HHeH c bmxorom of COMnapaTopa 8.

Yctpohctbo pa6oTaeT cneflywmHM o6pa30M. Βηοκ 7 ynpaBneHHH paóoToň nonynpoBOflHHKoBoro Kinon 3 nOFL BO3fleHCT, During co-MaHflbí c Bbixofla KOMnapaTopa 8 ynpaBnneT neperanonaTeneM Kniona third HanKnne "OT-RpuBaromeFo 'Hah" 3aKpbiBaiomero "CHrnana on Bbixofle KOMnapaTopa 8 onpeflenHeTCHcooTHomeHHeM cHrHanoB Ha ero Bxonax: cHFHana o6paTHoň CB« 3H no CBaponHOMyτοκγ UT (Φηγ.1), cHHMaeMoro c myHTa 4, h CHrnana 3aflaHiin CBapoMHoro TOKa.IIocneoHHn ΗΜβετ £ Ba ypoBHH, 3anaBaeMbic 3aflaTHHKaMH 10h 11; MaKCHManhHbiNyy Ma | <HHHHManbHbIH Uy. 06a ypOBHB TOKa CBH33HM C CHRHANOM 3FHHHHPeflHero TOKa Uycp. CHHMaeMo-

c Μ Μ c c yn c c c c c c c c c K Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ Μ bxoa KOMnapaTopa nocrynaeT τοπβκο qhhh «3 3thxCHrUČJlOB, ΠρΗΗΘΜ 3aMKHyTOMy COCTOHHHIO ΚΠΙΟΗΘ 3 C OOTB6TCTByeT MaKCHMajIbHblHypoBeHb aaflaHnn: and pa30MKHyroMy - * MílHHManbHbiň. nepeKrnoneHne ypoBHH cnrHana3anaHHfi npoH3BOflHTCH nepexníoHaTeneM 9 ypoBHH well KOMaHfle c KOMnapaTopoM eighth linden 3aMbiK3HHH nonynpοβοαηηκοβογο KjiKwa 3 cBapoqHbiíí flow IEB HapacTaeT (φΗΓ. 3) Flo BeJIHHHHbl IM0 <KC »COOTBeTCTByiOmeň MaKCHManbHOMy (flJIH 3aflaHHbIX cpefl Hero Tokai-Ic" KO3 n <i> <L) nnneHTa nynbcaunň β) ypoBHio nanpnxeHHH aaflaHnnna Bxofle KOMnaparopa eighth Πρη flocTnxsHnn οβηροηημμ τοκομ βηηηθηηη IW0lKC, CNR-Han oSpaTHoň cbh3h UT c niyHTa 4 cpaBHHBaeTCH c cnrHanoM U ^ MOU <C, KOMnapaTop8 nepeionoHaeTCH η 6ηρκ 7 ynpaB JíeHHH pa6oToň nojiynp οβοαηηκοβογο KJitona pa3Mbi-κββτ kjiioh third OflHOBpeMeHno c Bbixofla KOMnapaTopa 8 nocTynaeT KOMaHfla Ha NEP-KnwnaTenb 9 ypoBHH n Ha bxoa KOMnapaTopa 8 nocTynaeT cnrHan aaflaHHH mhhh-ManbHóro ypOBHH Tokai CBapoHHbin flow IC6, noflflepxHBaeMbiH anepmeň flpoc- cenH 5 cnanaeT nepe3 ahoa 6 after βθπηηηημ XMMH. ΜοHHHHHHHHHHHHHHHHHHHHHH ^BHBHBHBHBHBHBHBHBHnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 3 3 3 3 3 3 3 3 3 flajiee αηκπ ποβτορηθτοη. lime Η3ΜβΗβΗΗΗ cpeflHero TOKa ICpt (U ^ q,;.) bo β nap nap 8 8 8 8 O O O a H H H KU KU KU KU KU KU KU KU KU KU KU KU KU KU KU KU KU KU.... h Uj, MHH = (1 -p) U ^, ep, h, cJieflOBaTejibHo, no TOMy xe aSKOHyH3MeHHI0TCH FLOW IMKKC H ^ CTOTH H CKB3XHOCTb nyjIbCaflHn CBapOHHOrO TO-

3TOM MOryT H3MeHHTbCH B UIHpOKHX npeflejiax B 3aBHCHMOCTH OT HanpHXeHHHnyrn, nanpHxeHHH cera h flpyrnx φΗκτοροβ, οαηθκο κοοΦΦηαηθητ TOKacoxpaiiHeTCH ποοτοηηημμ. IIpHMéHHT &amp; nbHO, HanpHMep »κ aproHOflyroBoň cBapne, gaflaTHHK 12 cpeflHeroCBaponnoro Tokai μοχθτ 6biTb βμποπηθη XAX BpeMeHHbiň nporpaMMaTop HanpHxeHHH3aflanHH U ^, EP cpeflHero CBapoHHoro τοκβ, o6ecneHHBaioufliň TpeSyeMbiň ahkji aprotic HonyroBóň cBapKH (napacTaHne ncnaflaHne τοκβ - tt ht ^. ^ NR 4a ), fl-thib-hocth HMnynbCOB - t ^, t ^, n nay3 - t ^, BenHHHHy cpeflHero TOKa npn HMnynbcax n nay3ax). Ornearomne CBapoHHoro τοκβ i eB - MaKCHMan bHbtn mh- HHManbHbiin IMHH_ ypoBHH τόκε Η3Μθηηιοτοη · no TOMy xe 3aKony, hto h Icp. -Οοφφη-: uneHT nyjibcaunň npn stom coxpaHHGTCH ποοτοηηημμ. IIpHMeHHTenbHo κ MexaHH3npoBaHHoň cBapxe b cpefle 3amHTHbix ra3OB PNA nonyl qeHHH xecTKHX hjih noJioronaflatoinHx βηθιπηηχ xapaKTepnCTHK b aaflaTHHK 12 bboaht-chloro nonojiHHTenbHbiň 3anaTHHK cpeflHero 3Η3ηθηηη HanpnxeHHH flyrn U-j, h h cnrHan. očpaTHoň CBH3H no HanpnxeHHio flyrn U ^, CHHMaeMbiů after flpoccejin τοπκβχ 5 b 18 15n (φΗΓ.1)., Πρη 3tom 3aflaTHHK 12 HBJíneTCH yciuiHTejieM n craaxnBaiotUHM Φηπβτρομ pa3HocT-ηογο cnrHana Uj.h - U h očecneHHBaiouHM Η3ΜβΗβΗΗθ cpeflHero CBapoHHoro TOKanpn xecTKHX nnn nonoronaflaioiHx BHeniHnx xapaKTepncTHKax TpeóyeMoň KpyTHSHbi.

Ha Φηγ.46 noKa3ano Η3ΜβΗβΗηβ bo BpeMeHH HanpnxeHHH flyrn n.cBapouHoro that Ka ICB npn KanenbHOM kopotkom saMbiKaHnn flyrn npn MexaHH3npoBaHHoň CBapne bra3ax, BBHfly τογο, HTO HanpnxeHHe b TouKax 18 19 n-noflflepxnBaeTcn nocTOHH HbiM, cpeflHnň CBapouHbiň flow npn kopotkom saMbncaHHH flyroBoro npoMexyTKa pac-τετ no 3aKOHY aKcnoneHTbi, onpeflenneMoň napaMeTpaMn flpoccenn 5. OrneaiomneCBapouHoro Tona IMqlKC n ποΒτορηωτ 3axoH η3ΜβΗβΗΗΗ cpeflHero τοκβ ICp_i κο3ώφηιχΗβΗτ nynbcaunň ocTaeTcn ποοτοηηηΜμ. nocne οκοηη3ηηη κοροτκογο 3aMbi-Kannn nponcxoflHT cnafl tokob.

Ha .5ηγ.5 npeflCTaBneHbí BapnaHTbi ηοποπη6ηηη ηοτοηηηκη č HecKonbKHMH pery-HHTopaMH TOKa - 2 <, 24, 2n. Hctohhhk μοχθτ nHTaTb n He3aBncnMbtx cBa 264034 ponHbix ποετοΒ (cBapoHHbi οπβκτροη 13, H3flejiHe 14), Kawibifl uepe3 cboh pery-'jiHTop (<bnr.5a). PexHM paSoTbi Kaxnoro nocTa aanaeTCH cbohm nocTOBbíM 3anaTHH-kom 12 cpeflHero cBaponHoro τοκβ.

SaflaTMHK 12 ΜΟΜβτ 6biTb ο6πιημ Ha Bcex cBaponHbpc nocTax (Φηγ.56). B stomcnynae on Bcex cBaponHhix ποετβχ no / wepxHBaeTCH ofHHaKOBbtfi pexHM CBapKH him «HHaKOBoe KanecTBO KpHBoň cBaponHoro tokbj HeKOToptie οτκηοηθηηη MoryT6brrb cBH3anbi c pa36pocoM napaMeTpoB sneMeHTOB perynnTopoB.

PerynHTopbi, ynpaBnneMbie o6iuhm 33Α3τηηκομ 12, b kohom h3 KOTOpbix rapaH-THpyeTCH onpeneneHHan BemMHHa It, h KaqecTBO kphboíí Tona (β = const), mo-ryr 6biTi> ΒκπιοΗβΗω napannenbHO Ha o6myio Harpy3Ky Harpy3Ke cyMMHpyroTCH flow bc6x peryjiHTopoB, and H3-3a pa36pocosnapaMerpoB peryjurropoB yBenHHHBaeTcH nacTOTa nyntcamiň cyMMapHoro τοκη. Πο cpaBHeHHio c H3BecTHbiM b npennaraeMOM ycTpoňcTBe rapaHTupyeTCH 3apa-Hee 3aflaHHoe KanecTBo xpuBoň CBapoHHoro τοκα (β = const) ητο flenaeT BOS-MoacHbíM iimpoKyio aBTQMaTH3annto npopecca CBapKH rpm npennaraeMoro ycTpoňcTBa.lípu 3Tom oSecneHHBaeTCH yfloScTBo sKcnnyaTauHH HCTOHHHKa, τηκ CSC-amino τβχ HonorHnecKHM peKOMennanHHM ( κβρτβΜ) mojkho 3anaBaTb BenHHHHy ηπη nporpaMMyΗ3ΜβΗβΗΗΗ oflHoro (οοηοβηογο) napaMeTpa peatHMa CBapKH - cpeRHero 3HaneHHHCBapoHHoro Tokai npn BbiĎpaHHOM κο3φφΗΗΗεΗτε nyjibcaiBiň and nonojiHHTeJibHbie on-ρβΜβτρω - MaKCHManbHbtří h MHHHMaJibHbiň flow nonynaioTCH áBTOMaranecKH. HOPOHHHK ΜΟ3ΚΘΤ 6bITb. "ΠΟΠΗβΗ Ha "MOflyjlbHOM" ΠρΗΗΙξΗΠβ, me Ka »Monynb npeflCTaBJíaeT co6oft saKóHneHHbi perynHTOp Tona c sanaHHbi-mh napaMeTpaMH. Π κ om B B B B B B B B B ej B B B B B B B B B B B ax B 3 3 3 ce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ce ce; KajKHbiři MOflynb ctpohtch Ha HeĎonbiuyro μοπ <ηοοτβ c yneTOM-BO3 MOJKHOCTeň cymecTByromHx nanynpoBOflHHKOBbix κπκμθβηχ npn6opoB, 6E3-HeoSxoflH mocth hx coepiHHeHHH flJiH napannenbHoň pa6oTbi b 6noKě 3 eflHHoro μοφηογο PE ryjiHTopa. 3a cneT yBenHneHHH hsctotm nynbcannH BbixoftHoro TOKa 6οτκβτ 6bIT CHHxeHrnyM τηγη;

Bbhac τογο, hto b npennaraeMOM ycT leastcTBé perynHTOp τοκβ paooTaeT Ha no-BbnaeHHoo nacTOTe, Macea npoccenH h Bcero ycTpoftcTBa cpaBHHTenbHo HeSonfamne.

TaKHM o6pa3OM, npe & naraeMoe ycT leastcTBO yHHBepcan.bKO (οα η ec ec ec ec ec ec ec)

ΦΟΡΜΥΛΑ H30BPETBHHH first Hctohhhk πητηηηη ηπη sneKTpoflyropoň CBapKH, cocTonnpiň H3 HéynpasnHe-μογο CBapoHHoro BbinpHMHTenH η n perynHTopoB cBapoHHoro Toxa, Kax &amp; bin H3 co-Topbíx coflepxHT cHnoBoň nonynpoBOflHHKOBbiň κπωη, 6ηοκ ynpaBneHHH icnrona, Aho-flbí o6paTHoro τοκβ, npoccenb, nryHT, KOMnapaTop h 6noK-3anaTHHK CBaponHoroTOKa on τ Η Ί awnh least ca τβΜ, HTO c uenbio noBbnueHHH KanecTBa CBA-pouHoro coeflHHeHHH rivet oĎecneneHHH nocTOHHCTBa 3anaHHoro κοοφφΗηΗεΗτβnyrihcaííHH NPH Η3ΜβΗβΗΗΗ cpeflHero 3HaqeHHH cBapoHHoro Tokai 6noK-3afláT «HKβμποπηθη b BHae Tpex B3aHMocBH3aHHbix 3afl3THHKOB cpeflHero, MaKCHMaiIbHOrO HMHHHManbHoro tokob h cHaóxeH nepeKHKwaTeneM ypoBHeň, coenHHHioinHM 3anaT íHKHMaKCHManbHoro * h c MHHHManbHoro ypoBHeil Tokai BxoflOM KoMnapaTopa, πρκηβΜ BBI-xofl KOMnapaTOpa coeflHHeH c. 6ποκομ ynpaBneHHH Knrona h NEP yKa3aHHbiň nepe-; KnronaTenb what cbohm bxohom. 1 2. Hctohhhk no n.1, o τ η η na ro mh c c Η τβΜ, ήτο, c nennio pacnMpe-hhh ofinacTH πρΗΜθΗβΗΗΗ nyreM nepexona Ha MexaHH3HpOBaHHyio ceapKy b cpeae 5 264034 3amHTHblX Γ &3;, 33, Η3ΤιΙΗΚ CpeflHerO TÓKa BblUOJlHGH BHHe dJiawuBawmero ΗΗ, ΠΒΤ-pa, ycuJiHTejiB h aanaTHHKa cpeflHero HanpH «eHHH jjyrH, rpu 3tom bxojj 3aflaTHHKacpefluero τοκβ coeflHHen c orhoh h3 kjigmm βμπρημμτ &amp; πη hc tohkoh coghhhghhhmyHT.ah apoccgjih. 3 'UCTOHHHK ΠΟΠ.1, OTJlHHa iOmHňCH TGM HTO c uenwo IIOBbnUe H-HHH HaneKHOCTH CHH3KGHHH ypOBHfl lUyMS ΛΥΓΗ, Π p ΘΓ JOT FJT Op OB CBapOHHOrO TOK3COGflHHGHbl napajrnenbHO H nOflKJHOHGHbl BbKOflHblM κπθμμβμ βμπρημητ K &amp; πη.

HgTOHHHKH ΗΗφθρΜ3ΙΒΙΗ, npHHHTbtG BO ΒΗΗΜβΗΗβ ΠρΗ 3ΚΟΠβρΤΗ3β: I. TSG. Miheilungen, 12, 1973, pp. 1362-68. II. SU, A, 206777 III. 3aHBxa IP 52-32852, κπ. B 23 K 9/06, 1977.

P E Φ E P A T

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Claims (3)

6 264034 OBJECT OF THE INVENTION A power source for electric arc welding, comprising an uncontrolled welding rectifier and welding current regulators, each of which comprises a power semiconductor gate switch, a switching circuit control block, a reverse current diode, a choke, a shunt, a comparator and a forming control block. characterized in that, in order to increase the quality of the welded joint by providing the stability of the determined pulsation coefficient when the average welding current is changed, the control block is provided in the form of three mutually coupled controllers of average, maximum and minimum currents and is reset by a level switch connecting the actuators a maximum minimum current level with a comparator input, wherein the comparator output is coupled to a switching circuit control block and via said switch with its input. 2. Source according to claim 1, characterized in that, for the purpose of extending the field of application by means of a transition to mechanized welding in shielding gases, the average current controller is in the form of a smoothing filter, an amplifier and an average arc voltage controller, wherein the input of the average current controller is coupled to one of the rectifier terminals and the junction point of the shunt to the choke. 7 264034 3. Source according to claim 1, characterized in that the welding current regulators are connected in parallel and connected to the output terminals of the rectifier, in order to increase the reliability and reduce the amount of arc sum.