CS206994B1 - Method of making the socket sleeves on the bodies of the pressure vessels by electroslag welding - Google Patents
Method of making the socket sleeves on the bodies of the pressure vessels by electroslag welding Download PDFInfo
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- CS206994B1 CS206994B1 CS728779A CS728779A CS206994B1 CS 206994 B1 CS206994 B1 CS 206994B1 CS 728779 A CS728779 A CS 728779A CS 728779 A CS728779 A CS 728779A CS 206994 B1 CS206994 B1 CS 206994B1
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- Czechoslovakia
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- segments
- melting
- neck
- crystallizer
- bodies
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- 238000003466 welding Methods 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000004971 Cross linker Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000007787 electrohydrodynamic spraying Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Nonmetallic Welding Materials (AREA)
Description
(54) Sposob výroby hrdlových nátrubkov na telesách tlakových nádob elektrotros| kovým vytavovaním ________ ______ ; Vynález sa týká spósobu výroby hrdlových nátrubkov na telesách tlakových nádob elektrotros-: kovým vytavovaním.(54) Production method for neck sleeves on electrotroses hot-melt ________ ______; The present invention relates to a method for producing neck nozzles on bodies of pressure vessels by electroslagging.
Tlakové nádoby v energetickom a ehemickom| priemysle, ako sú kotlové telesá, výmenníky teplá, chemické a jádrové reaktory a podobné, sú spraí vidla opatřené nátrubkami pre pripojenie potrubi ného systému k nádobě. ZatiaT čo teleso valcovéj tlakóvej hádoby sa zvyčajne vyrába ako zvarok výkovkov, alebo zvarok válcovaných dielcoy s po! užitím mechanizovaných spósobov zváraním, ná-? !. trubky sa 1^ telesu nádoby pripojujú spravidla ručným oblukovým zváraním. Je to dané jednak zložitou priestorovou konfiguráciou spoja, preníkom guTového alebo válcového plášťa telesa nádoby s válcovým telesom nátrubku, jednak rozmermi i nádoby a nátrubkov. Miesto pripojenia nátrubku na teleso nádoby je charakterizované koncentrácioú napatí a preto je v spoji nátrubku s telesom nádoby liipiteyaná přípustnost defektov a uplatňujú sa prísnejsié kritériá pré'posudzovanie mechanických vlastností spoja. Z tohto dóvodu, ako aj z hlediska tvarovej zložitosti spoja, operácia ručného privárania nátrubkov předpokládá použitie zváračov s vysokou kvalifikáciou, zručnosťou a skúsenosťami so zváraním v polohách. Popři !· nízkej produktivitě práce pri ručnom oblúkovom j priváraní nátrubkov, oprava zvarových defektov i vyvolává velké náklady na opakované operácie Idefektoskopickej kontroly a tepelného spracod ISú^zkájiYe, spósoby mechanizovaného privárania 'pátrubKov k telesám tlakových nádob zváraním automatom pod tavivom, alebo v ochranných atmosférách, pri ktorých je dráha hubice zváracieho stroja po priestorove zakrivenom obvode zvarovej medzery riadená buď obsluhou zváracieho stroja alebo róznymi systémami automatického riadenia, ako například snímačom polohy so spatnou vazbou na elektromotory ovládajúce vertikálny a obvodový pohyb zváracej hubice, alebo pomocou magnetického záznamu, ktorý sa snímá vopred z modelu dráhy hubice. Nevýhodou týchto spósobov je, že vyžadujú přesné obrobenie a zostavenie zváraných dielcov a použitie náročnej regulačnej techniky.Pressure and energy vessels Industries such as boiler bodies, heat exchangers, chemical and core reactors and the like are provided with sockets for connecting the pipe system to the vessel. While the cylindrical tubing tubular body is usually produced as a weldment of forgings or a weldment of rolled parts with a die. using mechanized welding methods, us-? !. the tubes are connected to the body of the container as a rule by manual arc welding. This is due both to the complicated spatial configuration of the joint, the intersection of the ball or cylindrical shell of the container body with the cylindrical sleeve body, and the dimensions of the container and the sleeves. The point of attachment of the sleeve to the container body is characterized by the concentration of stresses, and therefore the admissibility of defects is coupled in the connection of the sleeve to the container body and stricter criteria are applied to assess the mechanical properties of the joint. For this reason, as well as in terms of the shape complexity of the joint, the manual welding operation of the sockets assumes the use of welders with high qualifications, skills and experience in position welding. In addition to the low productivity of manual arc welding of the sockets, repairing weld defects also entails high costs for repeated operations of the IDE and heat treatment. in which the path of the welding machine nozzle along the spatially curved gap of the welding gap is controlled either by the operator of the welding machine or by various automatic control systems such as a position sensor with poor coupling to electric motors controlling the vertical and circumferential movement of the welding nozzle; in advance from the model of the orbit path. The disadvantage of these methods is that they require precise machining and assembly of the welded parts and the use of sophisticated control technology.
Je tiež známy spósob elektrotroskového vytavovania nátrubkov s plným prierezom na plášť tlakóvej nádoby. Tento spósob sa priemyselne využívá do vonkajšieho priemeru nátrubku okolo 150 mm. Jeho nevýhoda spočívá v nutnosti dodatečného vyvřtania otvoru na menovitú světlost’.There is also known a method of electrosrosing the full cross section of sleeves onto a pressure vessel housing. This method is industrially used up to the outside diameter of the nozzle around 150 mm. Its disadvantage lies in the necessity of additional drilling of the hole to the nominal size.
Uvedené nevýhody sa vynálezom do značnej miery odstránia. Podstata spósobu výroby hrdlových nátrubkov na tlakové nádoby elektrotroskovým vytavovaním spočívá v tom, že sa vytvoriaThese disadvantages are largely eliminated by the invention. The essence of the method for the production of nozzle sleeves for pressure vessels by electro-smelting is to create
206994 ny I [ xtytavérSmmajmenej dvoch segmentóv, ktořěna : sebanavazujú. Přitom je výhodné, že pri vy tavova! ní viacej ako troch segmentóv «a poradie ich vytavovania vystrieda.206994 ny I [xtytavérSmm at least two segments that are bound to each other. It is advantageous in this case that during melting. more than three segments «and the order of their melting
Spósob výroby hrdlových Oátrubkovnatelesách tlakových· nádob elektrotroskovým vytavovaním podía vynálezu má.tú výhodu, že nahradzuje ruéné oblúkové priváranie, pričom zabezpečuje dokonalý prievar a dokonalý metalurgický zvarový spoj v stykových plochách segmentóv ako aj v radiálnych spojoch medzi jednotlivými hrdlovými segmentami. _________________ ____. .. _____’The method of manufacturing necked tubular pressure vessels according to the invention has the advantage of replacing manual arc welding, while ensuring perfect penetration and perfect metallurgical weld joints in the contact surfaces of the segments as well as in radial joints between the individual neck segments. _________________ ____. .. _____ ’
Na připojených výkresoch je na obr. 1 a 2 znázorněná schéma zostavy kryštalizátorov pre odlievanie jedného segmentu hrdlového nátrubku. Obr.In the accompanying drawings, FIG. 1 and 2 show a schematic diagram of a crystallizer assembly for casting one neck nozzle segment. Fig.
a na obr. 4 je pozdížny rez už celým odliatym segmentem.and in FIG. 4 is a longitudinal section through the entire cast segment.
lezu je ten, že do steny tlakovej nádoby 1 sa najskór urobí otvor 2 s naznačeným, přechodovým profilom. Zo spodu steny sa odlievací otvor obstavá základovým kryštalizátorom 3, spodným náběhovým kryštalizátorom 4 a světlý otvor hrdla vytvára vnútorný kryštalizátor 5. Vonkajšia časť hrdla, vystupujúca zo steny tlakové j nádoby li sa formuje vonkajším kryštalizátorom 6 v súčinnosti s vnútorným kryštalizátorom 5,. Prieátof pre elektrotrosko- j vé liatie hrdlového sejgnentu z bokov obstavujú radiálně kryštalizátory 7. Všetky kryštalizátory | pracovného súboru sú chladené pretekajúcqu yo-j ho segmentu sa realizuje elektrotroskový tavebný proces. Přitom sa využívá systém skupinovéj pretavoýacfej qlektródy >$- ktorá sa ódtavuje jó aktívoej trosky 9.Od ta vovaný materiál skupin» 'pretavovace' eiqktródy 8 vytvára postupným lil segment hrd ového nátrubku 10. , : ;iAs a result, an opening 2 with a indicated transition profile is first made into the wall of the pressure vessel 1. From the bottom of the wall, the casting aperture is enclosed by the base crystallizer 3, the lower start-up crystallizer 4 and the bright opening of the neck forms the inner crystallizer 5. The outer neck portion protruding from the wall of the pressure vessel 11 is formed by the outer crystallizer 6 in cooperation with the inner crystallizer 5. The electrostatic die casting throat drawer is surrounded by radial crystallizers 7. All crystallizers | of the working set are cooled by flowing through the y-segment, an electroslag melting process is carried out. In this case, a system of a group remelting electrode > $ is used which is melted into active slag 9. The material of the group '
Výroba segnientov elektratřofekovým vytavo· ním pódia vynálezu na seba navazuje. Pri vytvoření viacej ako troch segmentóv sa poradie ich vytavovania vystrieda, například pri štyroch segmentech postup ich vytaýqvania je: prvý, třetí, druhý, štvrtý.The production of segnients by electrofusion welding according to the invention follows one another. When more than three segments are formed, the order of melting is alternated, for example, for four segments, the process of extracting them is: first, third, second, fourth.
nia je: prvý, třetí, piaty a potom sa vytavia i segmenty v medzerách medzi nimi, teda druhý, j štvrtý á šiesty. Podobné sá postupuje i v dalších J prípadoch.nia is: first, third, fifth and then segments in the gaps between them, ie, second, fourth and sixth, are also produced. A similar procedure is followed in other J cases.
Spósob výroby hrdlových nátrubkov technoló- ! giou elektrotroskového vytavovania a ich súčasné vqváranie do steny telesa možno uplatniť pri i výrobě róznych dutých válcových alebo aj tvarova1 ných telies ako sú tlakové nádoby, reaktory, připadne kompenzátory, telesá armatúr a podobné.Method of production of technoló neck nozzles! Gia electroslag smelting and vqváranie present in the wall of the body is applicable to the production of various hollow cylinder or of formed bodies 1 Nycha such as pressure vessels, reactors, or joints, fittings, heaters and the like.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS728779A CS206994B1 (en) | 1979-12-26 | 1979-12-26 | Method of making the socket sleeves on the bodies of the pressure vessels by electroslag welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS728779A CS206994B1 (en) | 1979-12-26 | 1979-12-26 | Method of making the socket sleeves on the bodies of the pressure vessels by electroslag welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS206994B1 true CS206994B1 (en) | 1981-07-31 |
Family
ID=5421718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS728779A CS206994B1 (en) | 1979-12-26 | 1979-12-26 | Method of making the socket sleeves on the bodies of the pressure vessels by electroslag welding |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS206994B1 (en) |
-
1979
- 1979-12-26 CS CS728779A patent/CS206994B1/en unknown
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