DD234572A3 - Schaltbild - Google Patents

Schaltbild Download PDF

Info

Publication number
DD234572A3
DD234572A3 DD84261026A DD26102684A DD234572A3 DD 234572 A3 DD234572 A3 DD 234572A3 DD 84261026 A DD84261026 A DD 84261026A DD 26102684 A DD26102684 A DD 26102684A DD 234572 A3 DD234572 A3 DD 234572A3
Authority
DD
German Democratic Republic
Prior art keywords
ojodoioh
oih
godoia
ffoxna
jad
Prior art date
Application number
DD84261026A
Other languages
English (en)
Inventor
Pavel Zahalka
Jaroslav Stanek
Jiri Matej
Original Assignee
Vysoka Skola Chem Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vysoka Skola Chem Tech filed Critical Vysoka Skola Chem Tech
Publication of DD234572A3 publication Critical patent/DD234572A3/de

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements
    • H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
    • C03B5/1677—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches by use of electrochemically protection means, e.g. passivation of electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Control Of Resistance Heating (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Resistance Heating (AREA)
  • Glass Compositions (AREA)
  • Feedback Control In General (AREA)

Abstract

Die Erfindung betrifft das Gebiet des Schmelzens von Glas und aehnlichen Stoffen mit Hilfe von elektrischem Strom unterhalb 50 Hz und loest das Problem der Verbindung der Quelle mit der automatischen Steuerung des Schmelzprozesses mittels eines zyklischen Converters 5, der mit Thyristoren 6 ausgestattet und an die Speiseleitung angeschlossen ist und die Steuerung des Schmelzofens 9 gewaehrleistet.

Description

MEH3 C 03 B 5/027, C 03 B 5/24
ABTopH H3o6pe TeHHS 3 a r a x κ a
CTaneK Hpoaaas, MaT e ä UHpacn, Ilpara
Cxejaa ooeffAnesyis ßflss. ro HarpeBa μοηηογο pacnaaBa, mecTBeHHo cTeKJia, nyreit nepeMeHHoro a^eKTpH^ecKoro, c iacTOToa Hnxe, ^eM 50 Tu,
06.04.83 (py 2406-83)
ABTopcKoe cBH^eTejiBCTBo 235792
othochtch κ cxeMe βκλβ^θηηη &π.ά HenocpescTBeHHoro HarpeBa ηοηηογο pacnjiaB, npeHMjmecPBeHHo nyreM npoxoac£eHHa ajieKTpH-qecKoro nepeaieHHoro τοKa c TOToÄ HMxe, ^eM 50 Γι?.
H3BeCTaH cnocoß π-iaBjreHMÄ noHonpoBOÄMMHX pacmiaBOB, πpeMHyaiecTBeHHO cTemra, 3JieKTpH*iecEHi£tokom c tiacTOToä, hh xe, ^eM ceTeBaa, β peaya&TaTe ^ero cHicsaeTCÄ KoppoaKs njia-BHJiBHHX HeTaji^H^ecKHX ajieKTpoÄOB. iUa ocjmecTBjieHHa θτογο cnocoöa β cxene BKjmqeHMfl ^o^shh 6hti> cpeflcTBa, cnocoÖHHe
tiacTOTy nHTasmero Toxa. B nyOjuHKai^HH M.Ky6aTa a noJiynpoBO^HHKOBaa TexHHKa1* /CHTJI, AJI-IA 1978/ Ha στρ. 538 - 539 t&jlvl β nyÖJiHKaifHJi B.FpÖKa » koji. Mnpo6jieMH
9jieKTpoHHHX CHCTeM1* /CHTJI 1980/ Ha στρ.. 25 pe^B ο npeoßpaaoBaTejiax, oÖecne^nisasniHX npeoöpasoBaHne napaneTpoB HanpaacensiÄ nepeMeHHoro TOKa ,gaHHoS qacTOTu. B Ka^ecTse HenoöpeÄCTBeHHicc npeoöpaaoBaTejieS iactoth yKaaaHH miKjioKOHBepTepH, οοϊπιηο ocHameHHHe THpHCTopaMH, κοτο-pse Hcnojii>3yiDTca, rjiaBHHM oÖpaaoiÄ, ^s per.yjiHpoBaHHH 060-POTOB H MOmHOCTefi npMBOflOB C THXOXOAHHMH CMHXpOHHHMii ^BH-raTejiÄMH β MejtbHHiiax kjlsl rteneHTa, ne^ax η τ. ^. J&si peryjiHpoBaHHs oTOüJieHHa cTeKjroBapeHHHX nJiaBHJiBHsx ne^ieä hx HCHOJIB3OBaHHe HeHSBeCTHO, a H3BeCTH0e. BKJID^eHHe r^HKJIOKOH-BepTepoB kusi ötoS i^ejiii aBJiaeTCH HenoflxoÄHmHii, Tan KaK npH noraBJieHHH Tpeöyeiaie sHa^enna HeoÖxoflHato noÄÄepacHBaTb
KOHCTaHTHHMH.
YKasaHHHe He^ocTaTKH ycTaHeHK hjih sHa^HTejiBHo orpaHH-β cxeae BKJiB^eHHa β ηοποληθηηη corjiacHo u3o6peTeHHx>,
ΚΟΤΟρΟΓΟ COCTOHT B TOM, W B TJlaBHys) JIHHHB Πβρβ-ΜβΗΗΟΓΟ IIHTasmero HCTO^IHHKa, SejiymyK) Κ miaBHUIBHHM 3JieKTpO~
ne^H, BKJiB^eH TOKocHHMaTejiB η liHKJioκοΗΒβρτβρ, ocHan?eH-THpHCTopaMH, κ KOTOpOMy tiepes reHepaTop ochobhoh BpeMeHHyo ΐξβπΒ peryjiHpoBaHHa μοπϊηοοτη,
sasHraHHH η ycHJiHTejiB HMnyjiBcoB 3asHTaHHa npHcoenepeKjno^taTeJiB HeoÖxb^HMoro nocTosHHoro 3Ha^eHHa tjac-K reHepaTopy ochobhoä qacToTH η speMeHHoÄ ijenn pery-
MOmHOCTH ΠρΗΟΟβ,ΖΠίΗΘΗ CHHXp0HH3aT0p,
per yjiHpo BaHHa ^epee cHHxpoHH3an.HOHHjsH τρβΗοφορίίβτορ κ rjiaBHoä ληηηη. K ΒρβΜβΗΗοϋ π,βπΗ peryjrapoBaHKa moejhocthnpHCOeffiIHeH BHXO1H ΗβΜβρΗΤδΛϋ nOCTOflHHOÜ KOMnOHeHTH MOHTHOC-TH, K BXO1Hy KOTOΡΟΓΟ npHCOeßHHeH BHX0Ä Μ8ΜβρΜΤθΛΗ MOBJHOCTH,βχολ HanpsseHHs κοτοροΓο πρποοβ,ζίαΗΘΗ κ ληηημ peryjiHpoBaHMa, a BXOÄ TOKa npncoe^MHeH κ TOKocHHuaTejiB· B TepMOflaTtiHK, κ KOTopoMy πρκοοβΑΗΗθΗ HHipiKaTop
K ΒρβΜβΗΗοϋ ΓξβπΗ peryajjpoBaHHü moehhoctk c bhtoäoS mo-
ΙΘΤ ÖHTB ΠρΚαΟβΑΜΗβΗ BHXOÄ peryjiaTOPa MOmHOCTM, OflHH BXOÄ
κοτοροΓο coeÄHHeH c btophm bhxo^om H3uepnTejca MomHocTii, a BTopoÄ βχολ c nepeicjiiD^iaTe^eH Tpeöyeasoro sHa^enaa MomHOCTM. ia-iee, btopoä bxo# pery^HTopa moihhoctsi μοχθτ 6htb c βηγο-Äoä πρΗοοβ^ΗΗΘΗ κ BHXO1Hy peryjiHTopa TeiänepaTypH, o^üh bxoä κοτοροΓο πpHcοe5HHeH κ TepMoflaT^HKy, a BTopoä - κ nepeKji»- TpeöyeMoro aHa^eHna TeieiepaTypH.
iiüicjoKOHBepTepa, coeÄHHeHHoro c coot-ποαχοαηπϊημη ixenaMH, moäho He τολβκο y η peryjizpoBaTb ^acTOTy, onpeaeJieHHyD bh^om njiaBJieHoä jiOMaccH, ho α peryanpoBaTB moihhocti> acTO'iHJiKa β οοοτβθτοτ-
BHII C ΗΘΟόΧΟίξΜΜΟϋ ΠΟΤρβΟΛΗβΜΟΚ MOQHOCTbD HJIH 3Ce
HcnojrHeHHe H3o6peTeHHa onncaHo Hnxe η H3o6paa:eHo Ha npajroaceHHux pHcyHKax, r^e pnc.
öjroa-cxeMy BKjro^eHHa HCTo^iHHKa HHTaHHa c qacTOTs η HSMepenneM MomnocTH, pHc. 2 - 6aoK-cxeno pHc. 1 c peryjTHpoBKoS moihhocth, pnc. 3 - ΟΛθκ-cxeMy no pHc. IhEc peryarnposKOM TeiänepaTyps.
ΠβρβΜ6ΗΗΗΜ HCTO^HHS nHTaHHÄ 1, (pHC. l),
κ τρβχφβ3Ηο3 ceTH Z nocpeflcTBOM iMaBHoS ληηηη 3
A ΟΟΘ,ΖϊΗΗΘΗ C ΙίΗΚΛΟΚΟΗΒβρΤβρΟΜ ^5,
Ο,ζΗΟφαβΗΗβ BHBOfla 2 ΠρΗΟΟβΛΗΗβΗΗ K HHM OJieKTpCSaM £, paCnOJIOSeHHHM B HJlaBHJIbHOfi Πβ^ϊΗ £, B KO-ΤΟΡΗΧ paCnOJIOaeH ΤβρΜ0Α3Τ*ΙΗΚ 10, ΚΟΤΟΡΚΗ ΗΜββΤ PIHflHKaTOp 11/
TeisnepaTypH, BHBe^eHHHH sis ne^H. K n,HiaiOKOHBepTepy _5 npn-
12 Tpeöyenoro nocToaHHoro •sepes reHepaTop 13_ ochobhoh ^ac.TOTs, ijeiiB 14 peryaapoBaHHa iioihhocth, pacnpe,nejaHTe.aB lj> cob aascKraHHa κ yciOKTejiB 16, HMnyjtBcöB aasHraHKs. K renepaTopy 13^ocHOBHoä ^iacTOTH κ BpeiteHHOK Ε{βπΗ lj| πρκοοθίζκ-HeH cHHxpoHnaaTop 1,7, noÄiuro^eHHHM ^iepes cHHxpoHH3an;iioHHHS TpaHc$opuaTop 18_ ^aHHeS peryjiKpoBaHHa 19 κ r^aBHOw ληηκκ.13. K BpeMeHHoä nenK 14, pery^HpoBaHKa moqhoctk noflKjnoqeH bhxoa Η3ΜβρκτβΛ3 nocToaHHoä cocTaBjiazmeS μοπϊηοοτκ, κ Bxofly koto-POM ΠΟΛΚΛ^^ΪβΗ BHXO^ Κ3ΜβρϋΤβΛΗ 21 MOHiHOCTK. ΕΤΟ BXOÄ ΗαΠ-
^epea cnHxpoHHsaipioHHHH τρβΗοφοριίατορ 18, npKcoe-κ ληηκκ pery^HpoBaHHa 19, a ero bxo£ toKa npHcoeiH-K TOEOCHKHaTe.si> 4.
K BpeMeHHoä ijenK Ij4 peryaHposaHKa MomaocTK (psic. Z) 6htb npKcoeÄKHeH peryaaTop 22^ mo^hoctk, oäkh bxoä κοτοροΓο COe1HHHeH c BTOpsoi BHXOÄoat K3iiepKTeJia 21^ mos(hoctk, a Βτοροϋ BXOÄ - c nepemro*iaTe.aeM 23_ TpeöyeMoro
PHC. 3 Βτοροϋ bxoj peryjiaTopa 22 μοιπηοοτη κ BHXo,ny peryjiaTopa 24 TeiciepaTypH, o,shh bxoä κοτοροΓο πρκοοβΛΗΗβΗ χ TepMOÄaT^iHKy 10, a BTopoä - κ nepe-2_5 TpeöyeMoro 3Ha^eHKa TennepaTypH·
Gxeua βKJiJ)^eHKa paööTaeT
Ha nepeicaE^aTe^e 12 ycTanaB^KsaeTca Tpeßyeuaa Hiote 50 Γΐχ, onpeflejreHHaa bhäom
IaCTOTa nepeKjno^aTe^a 12 κ reHepaTopa 13 ochobhoü cKHxpoHH3HpyeTca cKHxpoHKaaTopoM 1/7 c ceTeBoä iac-Hecymaa ^acTOTa, oÖpaeoBaHHaa reHepaTopoM 13 ochob- *iacT0TH n BpeueHHoS i;enBB IA McgyjiHpyeTea κ pacnoeÄe-Ha οτΑβΛΒΗΗβ τκρκοτορΗ 5, i^KiuroKOHBepTepa ^ pacnpe-15 KJänyjii»coB saaHraHKa,KOTopHe ycmiHBajoTca ycK-16^ nwnyjiBcoB saswraHKa. ΤκρκοτορΗ 6^ nponycKax5T nepeMeHHaü a^eKTpH^ecKHS τοκ
12_, β ajieKTpoÄH .8. Πρκ »tom KSMepKTejieii 2_1
MOHiHOCTb Ha OCHOBaHHH AaHHHX
18, VL TO KOCHMMa T€Jia 4. TaKSCS Μ8ΜβρΗΘΤ03 HOC-
cocTaBxasmaa μοπϊηοοτη nsMepnTejieM 2Ό Ha ocHOBaHsia H3MepnTejia 21 μοπ^ηοοτη κ βρθμθηηοΜ u,envi IA. TeMnepaTypa pacnaaea onpeAeoiaeirca κΗΛΜκβτοροΜ 11, npncoe^iiHeH-κ TepMo,naT^iiKy 10.
Jlajiee bosmosho Tanxe peryjiapoBaTB MomHOCTb neun £ · 2) nyreM cpaBHenaa TpeÖyeMoM uomHocTis, ycTaHOBJieHHoS
23, pery^aTopoa 22^ c AaHHHMM, chsthmh c %a-21 MomHocTH. HMnyjrBc RKa. ycTSHOBKH itom;HocTH peryjiHTopoM 2^ BpeMeHHoä ιχθπμ 14«
BO3MOSHO peryjiHpoBaTB vl TeimepaTypy β ne^n £ (pile. 3)
oöpaaoM, *ΐτο cpaBHMBaeTca TeimepaTypa c 2_5 TpeÖyeMoro 3Ha^eHMa TesciepaTypH c «ζφηηημμ
^O TeifliepaTypH η MMny^sc Azia HSMeneHMa Te&mepaTypH β peryjnsTop 22

Claims (1)

  1. ΪΠΚΗθϊιΒΗβ OJOJSa/Cpadi (QZ)
    -onrxeden η - godoia β *(0T) .ÄXKhiBiroKdai η HaHKtfaooHdn ojod .-Oios ffoxs ηηϊζΌ 'HdüiBdanwai (>3) BdOiKiriCjad -ÄtfoxHe η η"3η -löfaooiidn HiooHinow (gg) BdoiinrÄjad ffoxa godoia Oih * κ θ λ κοκβϊπαβ-ΐιΗΡΛο * 2KJ ·πποπ
    •ΚΛΟΟΗ
    ο.ΐθϊϊθ.£α.ed.! (82) 5ϊ8ΐτθώBhCETHedsπ ο « E1OXa god
    -ΟΛΗ B 4K1LOOHiSOH (JZ) XVQiTHaBnZTS. ΗΟΪΌΧΗΗ KHdOiS O H3HSitf900
    OJOdOiOH ΪΖΌΧΗ HMiZ1O 4KiOOHiHOK (ZZ) BdOiFE^JSd tfOXHS ΗΘΗ
    -MiTSOOMdn KiOOHÖIOK KKHBSOdKirÜjad (fX) ΚΠΘΪΙ ΜΟΗΗΘΚθΰΗ H Oihf κ a i κ ο κ β in α β b κ r i ο *j ·π on »HHaHKiteoo βκθχο 'Ζ
    (χι) doiBHHffHH HaHiöiaooKdn (5) «ban s (OT)
    η KaiiKdn {(f) onraiBKHHOOHOi χ HaBidfaooHdn
    tfoxs β f(6T) β·κηβ3odEir^jad ähhkf η HaHKtfaooKdn ojodoiOH tfoxa Ήϊοοηϊποκ (χζ) inraiHdaKeK ffoxna
    OJOdOiOH iCffOXa Η 'HiOOHÜIOK gainXKITHBiOOO
    KiT8iKdaK8K ffoxna HaHKffaooHdn KiOOHinoK
    -ad (fj) Hnati ^OHHawada χ *(e) ηηηηγ ^ohsbitj η
    -doφoHBdi ^HHHOKbBeKHOdXHKO 8adaii KKH^eodHif^jad (§1)
    -ηγ HHHHaiiCEiraSfon *(£,!) doiBBKHOdxHKo HasKtfaooKdn (fj) ηπθο
    κ NiOiOBh hohbohoo (st) ^doiBdaHaj η *
    ojOHHKOiOon ojOKa^gadi (21) qiraiBbonraaden
    KKHBJKKB8 SOO^KÄIDIK (9T) «irailllfKO^ K KKHBJKKBe HOO
    (9T) «uraiKraffadnoBd 'κϊοοηϊποκ KKHsaodKirAjad
    qneö c^HHaweda 'HiOiOBii hohsohoo (qt) doiBdanaj
    H C(9) HHBdOilOiidEi ΗΗΗΗΘΪΗδΗΟΟ '(Q)
    κ (^) «rraatfKHHOOxoi HehCiffHs (5) Khan (g)
    ΗΗΗ«Ϊ1ΓΚ3ΒΓΠ H C^ÖöCtfaH * (X) KKHBiKC BXHHiiOiOH
    (Q) eiKHKB· GüCHaBrj a Oih fHai BOBBiECEBbKffiO *tlj OS "Sh 8KKH 4KOiOiOBh O BHOi OJOHOahKdiXare OJOHHaw
    -adan KKHalfEOxodn naiiCn fBiPHai0 OHHaaioainÄKKadn /BasrnoBd
    BaadjBH ojOHHasiOtfadoonaH εεϊΤ KHHaHKfaoo Bnaxo *T
    BKHaiadgo8K B r it n d 0 $
DD84261026A 1983-04-06 1984-03-19 Schaltbild DD234572A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS832406A CS235792B1 (en) 1983-04-06 1983-04-06 Connection for direct heating of ionic melt especially of glass by alternating current passage with lower frequency than 50 hz

Publications (1)

Publication Number Publication Date
DD234572A3 true DD234572A3 (de) 1986-04-09

Family

ID=5361131

Family Applications (1)

Application Number Title Priority Date Filing Date
DD84261026A DD234572A3 (de) 1983-04-06 1984-03-19 Schaltbild

Country Status (11)

Country Link
US (1) US4624002A (de)
JP (1) JPS59213630A (de)
AT (1) AT387563B (de)
CA (1) CA1231747A (de)
CS (1) CS235792B1 (de)
DD (1) DD234572A3 (de)
DE (1) DE3412670A1 (de)
FI (1) FI75795C (de)
GB (1) GB2140632B (de)
NO (1) NO163260C (de)
SE (1) SE459707B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6463361B1 (en) 1994-09-22 2002-10-08 Computer Motion, Inc. Speech interface for an automated endoscopic system
US6911916B1 (en) 1996-06-24 2005-06-28 The Cleveland Clinic Foundation Method and apparatus for accessing medical data over a network
US6496099B2 (en) 1996-06-24 2002-12-17 Computer Motion, Inc. General purpose distributed operating room control system
DE19802071A1 (de) * 1998-01-21 1999-04-01 Schott Glas Verfahren zum direkten elektrischen Beheizen von Glasschmelzaggregaten
DE10002245B4 (de) * 2000-01-20 2004-08-05 Schott Glas Energieversorgungseinrichtung einer Schmelzwanne
DE102005051232A1 (de) * 2005-10-26 2007-05-03 Sms Demag Ag Steuervorrichtung für Wechselstrom-Reduktionsöfen
DE102006003534A1 (de) * 2006-01-24 2007-08-02 Schott Ag Verfahren und Vorrichtung zum Korrosionsschutz von Elektroden bei der Temperaturbeeinflussung einer Schmelze
JP5943064B2 (ja) * 2012-02-27 2016-06-29 旭硝子株式会社 無アルカリガラスの製造方法
JP6015708B2 (ja) * 2014-05-13 2016-10-26 株式会社デンソー ３相回転機の電流制御システム
US20240114604A1 (en) * 2022-09-29 2024-04-04 Ami International Sapi De C.V. Power supply for an electric arc furnace

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436642A (en) * 1966-09-01 1969-04-01 Ajax Magnethermic Corp Polyphase to single phase static frequency multipliers with switching devices responsive to load conditions
US3431483A (en) 1966-12-30 1969-03-04 Gen Electric Cycloconverter power circuits
US3593104A (en) 1969-06-26 1971-07-13 Rotron Inc Frequency converter providing employable output frequencies
IT7940024A0 (it) * 1979-02-19 1979-02-19 Tironi Electromecc Metodo per la fusione di materiali vetrosi ed uso di dispositivo idoneo alla realizzazione del metodo
US4303972A (en) 1979-11-19 1981-12-01 Westinghouse Electric Corp. Controlling the circulating current in naturally commutated static power converters

Also Published As

Publication number Publication date
US4624002A (en) 1986-11-18
GB2140632B (en) 1987-10-28
JPS59213630A (ja) 1984-12-03
SE459707B (sv) 1989-07-24
FI841379L (fi) 1984-10-07
CA1231747A (en) 1988-01-19
FI75795C (fi) 1988-08-08
SE8401750L (sv) 1984-10-07
ATA108484A (de) 1988-07-15
FI75795B (fi) 1988-04-29
SE8401750D0 (sv) 1984-03-29
DE3412670C2 (de) 1990-06-07
FI841379A0 (fi) 1984-04-06
DE3412670A1 (de) 1984-10-11
AT387563B (de) 1989-02-10
GB2140632A (en) 1984-11-28
NO163260B (no) 1990-01-15
NO841342L (no) 1984-10-08
CS235792B1 (en) 1985-05-15
GB8408800D0 (en) 1984-05-16
NO163260C (no) 1990-04-25

Similar Documents

Publication Publication Date Title
DD234572A3 (de) Schaltbild
ES448914A1 (es) Perfeccionamientos en aparatos soldadores para producir una soldadura continua entre laminas de material termofusible.
DK23684D0 (da) Fremgangsmade til samtidig syntese af flere oligonucleotider pa fast fase samt apparat til udoevelse af fremgangsmaden
JPS5561936A (en) Fluidity solid cracking catalyst composition
IT7925044A0 (it) Metodo per la riduzione diretta di ferro usando gas di carbone.
NO843357L (no) Flerstoffdyse til sammenfoering av minst to flyttbare kunstoff, spesielt skumstoffdannende reaksjonskomponenter for innledning av reaksjonen ved sammenblanding og fremgangsmaate til drift av flerstoffdyse
CA938679A (en) Tubular composite self-shielded arc welding electrodes
ES8606561A1 (es) Perfeccionamientos en un aparato movil para el hincado en el suelo por percusion de objetos
JPS5257011A (en) Material for welding of low susceptibility to weld crack and the proce ss for production
BE847513A (fr) Composition pour l'acceleration de la prise du platre de construction,et produits realises en utilisant une telle composition
IT1132142B (it) Degassificatore inclinato atto a minimizzare la quantita' di gas trascinata dal trasferimento di particelle solide verso una conduttura dalla fase densa di un letto fluidificato
IT1167300B (it) Prodotti refrattari legati tramite residui carbonati e silicio metallico in polvere, e procedimento per la loro fabbricazione
JPS5229229A (en) Thermal printing element
JPS5268040A (en) Gas shielded arc welding process
JPS53105738A (en) Interial device for direct current arc furnace
NL7601061A (nl) Werkwijze voor het winnen van epsilon-caprolac- tam uit een epsilon-caprolactamzwavelzuur-reac- tiemengsel.
JPS5429859A (en) Diffusion welding method utilizing transformation
ES2126011T3 (es) Procedimiento para la preparacion de metilclorosilanos.
JPS51151242A (en) Heat resistant ceramic rings for arc stud welding
NL7603411A (nl) Werkwijze voor de katalytische dimerisatie van hexafluorepoxypropaan tot perfluor-2-n.propoxypro- pionylfluoride.
JPS5411846A (en) Welding means with low weld crack susceptibility and method of making same
Kessar et al. A synthesis of phenanthrene by intramolecular benzyne cyclisation
SU563241A1 (ru) Способ электродуговой сварки плав щимс электродом с короткими замыкани ми дугового промежутка
GB1481722A (en) Method of initiating scarfing and consumable electrode therefor
NL7700882A (nl) Werkwijze voor het winnen van epsilon-caprolac- tam uit een epsilon-caprolactamzwavelzuurreac- tiemengsel.