SI8412135A8

SI8412135A8 - Apparatus for the continuous vertical casting of metal tubes

Info

Publication number: SI8412135A8
Application number: SI8412135A
Authority: SI
Inventors: Yves Gourmel; Michel Pierrel
Original assignee: Pont A Mousson
Priority date: 1984-01-10
Filing date: 1984-12-17
Publication date: 1996-04-30
Also published as: HRP930759B1

Description

-· Tehnički problem- · Technical problem

Tehnički problem koji se ovim pronalaskom rešava jeste‘kako konstrukcijski rešiti uredjaj za kontinualno vertikalno sifonsko livenje cevi u malom kalupu bez jezgra za oblikovanje trupa cevi kako bi se odvelo što manje energije koja se oslobadja očvrščavanjern metala u kalupu. , .A technical problem to be solved by the present invention is how to constructively construct a device for continuous vertical siphon casting of a pipe in a small mold without a core to form the fuselage to release as little energy as possible from the solidification of the metal in the mold. ,.

Stanje tehnikeThe state of the art

U jednom poznatom postrojenju tog tipa, opisuje se na primer u francuskom patentu br. 83.11 788 od 12. jula 1983. vertikalni cevni kalup formiran sa postoljem nosača koje sa njim čini dno lonca za tečni metal doveden sa donje strane, bilo pomoču sifona, bilo pomoču levka za livenje.In a known plant of this type, it is described, for example, in French patent no. 83.11 788 dated July 12, 1983, a vertical tubular mold formed with a carrier base which with it constitutes the bottom of a liquid metal pot brought from below, either by a siphon or by a casting funnel.

Takodje, lonac koga čine cevni kalup i postolje nosača sadrži cilindričnu zapreminu tečnog metala, koja je utoliko važnija sto je prečnik cevi koja treba da se dobije veči.Also, the pot formed by the tube mold and the carrier base contains a cylindrical volume of liquid metal, which is all the more important as the diameter of the tube to be obtained is larger.

Opis rešenja tehničkog problemaDescription of solution to a technical problem

Pronalazak koji je dalje detaljno opisan, odnosi se na uredjaj za kontinualno vertikalno livenje cevi koji obuhvata ulaz za tečni metal u delu ispod kalupa koji se hladi postavljenogThe invention further described relates to a device for continuous vertical casting of a pipe comprising an inlet for liquid metal in a part below the cooled mold

Λ na postolje, pri čemu kalup obrazuje sa.postoljem lonac za držanje tečnog metala, a okarakterisan je time sto sadrži u unutrašnjosti kalupa i po njegovoj vertikalnoj· osi centralno ispupčenje koje odgovara višini kalupa, radi obrazovanj a”sa njim prstenaste zapremine tečnog metala u delu ispod koga se nalazi ulaz najmanje jedne cevi sa snabdevanje tečnim metalom.Λ to the stand, the mold forming a liquid metal holding cup, characterized by the fact that it contains inside the mold and along its vertical axis a central projection corresponding to the height of the mold for the formation of a "annular volume of liquid metal in the part below which is the inlet of at least one tube with a supply of liquid metal.

-· -3“- · -3 "

Zahvaljujuči ovakvom rasporedu, lonac sadrži samo malu prstenastu zapreminu tečnog.jnetala čija Širina prstena je dosta veča od debljine cevi koja treba da se dobije, ali čija je'uku-.' pna zapremina znatno ;;anja u poredjenju sa zapreminom koju je sadržao lonac bez centralnog ispupčenja.Due to this arrangement, the pot contains only a small annular volume of liquid.nell whose ring width is much larger than the thickness of the tube to be obtained but whose 'uku-.' a considerable volume compared to the volume contained in the pot without a central bulge.

S druge strane, prema drugoj važnoj karakteristici pronalaska centralno ispupčenje ima šupljinu koja ga skroz preseca, a koja dozvoljava pristup u unutrašnjost cevi koja se formira, iznad centralnog ispupčenja, sto daje mogučnost uvodjenja pomoču te šupljine centralnog ispupčenja sredstava za kontrolu, na primer nivoa tečnog metala ili debljine obrazovane cevi.On the other hand, according to another important feature of the invention, the central projection has a fully intersecting cavity that permits access to the tubing that is formed, above the central projection, which makes it possible to introduce to the cavity the central projection of the control means, for example, the liquid level metal or thickness of formed tube.

Druge karakteristike i prednosti proizilaze iz opisa koji sle· di.Other features and advantages derive from the following description.

Na priloženim crtežima datim u svojstvu primera, slika 1 je šematski prikaz preseka uredjaja za snabdevanje tečnim metalom za postrojenje za kontinualno livenje cevi bez livnog umetka.In the accompanying drawings given by way of example, Figure 1 is a schematic view of a cross-section of a liquid metal supply device for a continuous casting pipe without a casting insert.

Slika 2 je delimičan prikaz preseka koji odgovara sl. i a koji prikazuje upotrebu inicijalne cevi za započinjanje kontinualnog livenja.2 is a partial cross-sectional view corresponding to FIG. and a showing the use of an initial pipe to begin continuous casting.

Slika 3 je prikaz preseka analogan sa sl, 1 uredjaja iz pronalaska primenjen na kontinualno livenje livenih cevi za j3 is a sectional view analogous to FIG. 1 of the invention of the invention applied to continuous casting of cast pipes

ualavljivanje.taming.

Slika 4 je delimičan presek koji odgovara sl. 1 i prii kazuje varljantu centralnog ispupčenja sa supljinom koja ga preseca sa kraja na kraj.4 is a partial cross-section corresponding to FIG. 1 and tells the variant of the central bulge with a suture that cuts it end to end.

Slika 5 je prikaz preseka analogan sl.3, koji prikazuje kontinualno livenje cevi za ugl avl j iv a n Te sa uzlaznim snabdevanjem livenim gvoždjem pomoču levka za livenje pod pritiskom.Figure 5 is a sectional view analogous to Fig. 3, which shows the continuous casting of an angle tube with an upward supply of cast iron to a pressure casting funnel.

Slika 6 je delimičan prikaz analogan sl. 5 koji prikazuje varijantu snabdevanja tečnim metalom počevši od levka za livenje pod pritiskom.6 is a partial view analogous to FIG. 5 showing a variant of the supply of liquid metal starting with a pressure casting funnel.

Prema primerima izvodjenja ilustrovanim na sl. 1 i 2, pronalazak je primenjen na kontinualno uzlazno livenje cevi T od livenog gvoždja. ·According to the exemplary embodiments illustrated in FIG. 1 and 2, the invention has been applied to continuous upstream casting of cast iron pipe T. ·

Ovaj uredjaj obuhvata;This device includes;

- snabdevanje livenim gvoždjem pomoču sifona- supply of cast iron to siphons

- lonac koji sadrži cevni kalup koji se hladi- A pot containing a cooled tube mold

- ekstraktor formirane cevi koji nije predstavljen.- tube extractor not presented.

Kada se liveno gvoždje dovodi pomoču sifona, postolje 1, od vatrootpornog materijala, na primer siliko-aluminijuma sadrži u unutrašnjosti zida cev za livenje u oLlifu rlova L horizontalnu ili malo nagnutu i dimnjak 3 koji se završava na svom gornjem delu levkom za livenje 4.When cast iron is supplied by means of a siphon, the base 1, made of a fire-resistant material, for example silicone aluminum, contains in the interior of the wall a casting tube in the oLlif of the RL horizontal or slightly inclined and the chimney 3 terminating at its upper end by the casting funnel 4.

Postolje 1 sifona obrazuje donji deo osnove cevnog kalupa opisanog kasnije,The siphon stand 1 forms the lower part of the base of the tube mold described later,

U skladu sa pronalaskom, sifon ima.centralno ispupčenje 5 spoljnjeg konusnog oblika, po vertikalnoj oši XX, znatne višine iznad postolja 1.According to the invention, the siphon has a central projection 5 of the outer conical shape, perpendicular to the axis XX, of considerable height above the base 1.

Drugi detalji na ispupčenju 5 su opisani kasnije.Other details on bulge 5 are described later.

Po osi XX, postolje 1 nosi lonac sastavljen od cevnog kalupa koji sadrži grafitnu košuljicu 6 čiji unutrašnji prečnik odgovara fIn axis XX, stand 1 carries a pot composed of a tube mold containing a graphite sleeve 6 whose inner diameter f

spoljnjem prečniku cevi T koja t-re&e ;ur še proizvede i .hladnjakthe outer diameter of the tube T which t-re &e; ur still produces .fridge

7.7.

Košuljica 6 se spolja hladi hladnjakom 7, na primer od bakra, vodom za hladjenje koja cirkuliše i ulazi kroz vod 8, a izlazi kroz vod 9. Sklop košuljice 6 i hladnjaka 7 je dalje označen izrazom ” kalup 6-7 ” .The sleeve 6 is cooled externally by refrigerator 7, for example copper, with cooling water circulating and entering through conduit 8 and exiting through conduit 9. The conduit assembly 6 and cooler 7 is hereinafter referred to as "mold 6-7".

Dok se grafitna košuljica 6 spusta svojom krajnjom donjom ' ivicom na postolje 1 sifona, hladnjak 7, u kontaktu sa košuljicom 6, obuhvata je skoro celom svojom visinom, izuzev donjeg kraja košuljice 6 koji se ne hladi. Hladnjak 7 dakle nije u direktnom kontaktu sa postoljem 1. Eventualno, ali ne obavezno, može izmedju hladnjaka 7 i postolja 1 da se postavi prstenast vatrootporni blok.While the graphite liner 6 is lowered by its extreme lower edge to the base of the siphon 1, the cooler 7, in contact with the liner 6, covers almost all of its height, except for the lower end of the non-cooled liner 6. The refrigerator 7 is therefore not in direct contact with the stand 1. If necessary, but not necessarily, a ring-shaped fire block may be installed between the refrigerator 7 and the stand 1.

Centralno ispupčenje 5, koje čini integralni deo sifona 1,The central projection 5, which forms an integral part of siphon 1,

2, 3, 4 u datom primeru, čini takodje deo lonca koga čini spoj sifona i kalupa 6-7. Centralno ispupčenje 5 ima visinu iznad postolja 1 koja je najmanje jednaka, a požoljno veča od višine kalupa 6-7,2, 3, 4 in this example also forms part of the pot formed by the siphon-mold connection 6-7. The central projection 5 has a height above the plinth 1 which is at least equal and preferably greater than the height of the mold 6-7,

Centralno konusno ispupčenje 5 ima veliku osnovu, ispod nosača koga čini postolje 1, prečnika znatno manjeg od unutrašnjeg prečnika koji želi da se dobije kod cevi T koja se oblikuje,The central conical projection 5 has a large base, beneath a support made of a stand 1, with a diameter substantially smaller than the inner diameter which is desired to be obtained by the tube T being shaped,

Hala gornja osnova centralnog ispupčenja 5 ima prečnik znatno manji od onog od šupljine cevi koja se pravi.The halo upper base of the central projection 5 has a diameter substantially smaller than that of the tube cavity being made.

U datom primeru, centralno ispupčenje 5 ima šupljinu 10, na primer konusnog oblika. Ali takva supljina nije.obavezna. Horizontalni kanal 2 sifona ima otvor ispod postolja 1 na zidu dna lonca koga čini sam sifon, tako da se liveno gvoždje dovede na donji kraj kalupa 6-7 ispod kraja donje ivice košuljice 6. Otvor ulaza horizontalnog kanala 2 za snabdevanje tečnim metalom ima prečnik manji os širine prstenastog prostora izmedju velike donje osnove centralnog ispupčenja 5 i cilindrične šupljine kalupa 6-7.In the present example, the central projection 5 has a cavity 10, for example a conical shape. But such a cavity is not required. The horizontal channel 2 of the siphon has an opening below the base 1 on the wall of the bottom of the pot made by the siphon itself, so that the cast iron is brought to the lower end of the mold 6-7 below the bottom edge of the liner 6. The inlet opening of the horizontal channel 2 for the supply of liquid metal has a diameter smaller axis of width of annular space between large lower base of central projection 5 and cylindrical mold cavity 6-7.

Umetalnom loncu gde se tako oblikuje liveno gvoždje pomocu kalupa 6-7 ili košuljice 6 i sifona 1, 2, 3, 4, nalazi se mala zapremina tečnog metala ili livenog gvoždja, jer je on prstenast, pri čemu je on izmedju unutrašnjeg zida košuljice 6 i spoljnjeg zida centralnog ispupčenja 5 sifona.The artificial pot where the cast iron is thus formed by means of the mold 6-7 or the liner 6 and the siphons 1, 2, 3, 4 contains a small volume of liquid metal or cast iron, since it is annular, being between the inner wall of the liner 6 and the outer wall of the central bulge 5 siphons.

Debljina prstenastog prostora metala ili livenog gvoždja je znatno veča od e cevi T koja se formira. Naime, ni u kom slučaju ispupčenje 5 ne mora da obrazuje jezgro za formiranje cevi T. Suprotno torne, za vreme procesa očvrščavanja periferne zone pomenute prstenaste zapremine tečnog metala ili livenog gvoždja, izvesna prstenasta zapremina teč?.?, ribala ili livenog gvoždja mora da postoji izmedju periferije površine očvrščavanja i spoljnjeg zida. U prikazanom primeru izvodjenja prstenasta zapremina metala ili livenog gvoždja obuhvačena izmedju centralnog ispupčenja 5 i kalupa 6-7 ima na svom donjem kraju debljinu koja je najmanje duplo veča od debljine e cevi T. jThe thickness of the annular space of metal or cast iron is much larger than the e tube T that is formed. Namely, in any case, the projection 5 does not have to form a core for the formation of tube T. In contrast, during the process of hardening of the peripheral zone of said annular volume of liquid metal or cast iron, a certain annular volume of liquid?.?, Fisher or cast iron must it exists between the periphery of the curing surface and the outer wall. In the embodiment shown, the annular volume of metal or cast iron comprised between the central projection 5 and the mold 6-7 has at its lower end a thickness at least twice the thickness e of the tube T. j

Postrojenje je dopunjeno sredstvima za vertikalno vodjenje cevi T, koja su delimično predstavijena parom vodjica ili valjaka za vodjenje E i dopunjena ekstraktom koji nije predstavljen a sastoji se od uredjaja za dizanje podešenim za hvatanje gornjeg kraja cevi T koja se oblikuje i za penjanje cevi T, pomoču pogonskog motora.The plant is supplemented by means of a vertical guide tube T, which is partially represented by a pair of guide rails or guide rollers E and supplemented by an extract not represented and consists of a lifting device adapted to capture the upper end of the tube T which is formed and to climb the tube T. with the help of a propulsion engine.

Ta sredstva za vodjenje i vadjenje su poznata.These guidance and extraction means are known.

Liveno gvoždje se uvodi u livni levak 4 sledeči strelicu f. Punjenje sifona i lonca sastavljenog od kalupa 6-7 sa košuljicom 6 i centralnoa ispupčenja 5 sifona se vrši dok nivo livenog gvoždja N ne dostigne visinu nešto manju od ukupne višine kalupa 6-7 tako da šene izlije. Efektom spojenih sudova_fnivo H livenog gvoždja F je isti u unutrašnjosti lonca ili kalupaCast iron is introduced into the casting funnel 4 following the arrow f. Filling the siphon and the pot consisting of mold 6-7 with the liner 6 and the central protrusion 5 of the siphon is done until the level of cast iron N reaches a height slightly less than the total height of the mold 6-7 so that the woman pours. Effect of fused vessels _f level H of cast iron F is the same inside the pot or mold

6-7 i u unutrašnjosti dimnjaka 3. Hladnjak 7 je presečen strujom hladne vode. Za započinjanje proizvodnje cevi T, inicijalna cev K, sa cevnom karikom od celika, sa istim dijamefalnim unutrasnjim i spoljašnjim dimenzijama, dakle iste debljine e/kao i cev T koja treba da se dobije, uvodi se visinom kalupa 6-7 pomoču vodjica E tako da uroni u rastop svoj donji deo usečen kao Ml, na primer okruglog kraja, da bi se omogučilo vešanje livenog gvoždja F.6-7 and inside the chimney 3. Refrigerator 7 is cut off by a stream of cold water. To begin the production of pipe T, the initial pipe K, with a steel tubular link, with the same diamphalic inner and outer dimensions, therefore the same thickness e / as the tube T to be obtained, is introduced by the height of the mold 6-7 by means of the guide E so to submerge its underside cut as Ml, for example round end, to allow cast iron F. to hang.

Kada se kalup 6-7 ne hladi na svom donjem kraju, on se hladi največin delom svoje višine, do svog gornjeg kraja zbog toga što je košuljica 6 obuhvačena hladnjakom 7. Rezultat toga je da rastop očvrščava u kontaktu kalupa 6-7 celom visinom koja odgovara višini hladnjaka 7 do inicijalne cevi M u kontaktu sa kojom očvrščava. Debljina očvrsnulog rastopa sledeči front očvrščavanja S se povečava sa smanjenjem brzine uvodjenja livenog gvoždja sa dna. Liveno gvcfdje F puni usek Ml inicijalne cevi M, očvrščava, i zatim se vesa za inicijalnu cev M. Inicijalna cev koja se izvlači uvis pomoču ekstraktora, penje se i odvlači deo očvrsnutog , rastopa uvis.When mold 6-7 is not cooled at its lower end, it cools most of its height, to its upper end, because the sleeve 6 is enclosed by the cooler 7. The result is that the melt hardens at the contact of the mold 6-7 with the whole height, corresponds to the height of the heatsink 7 to the initial pipe M in contact with which it hardens. The thickness of the solidified melt the next solidification front S increases with the decrease in the rate of introduction of cast iron from the bottom. Cast gvcfdje F fill the notch Ml of the initial tube M, harden, and then hang the initial tube M. The initial tube, which is pulled upwards with the help of the extractor, rises and draws a part of the hardened, melted upwards.

Dok inicijalna cev M vuče nagore početni deo cevi T višine dovoljne da se zahvati izmedju vodjica ili valjaka vodjenja E (sl. 1), front očvrsčavanja S koji se formira na periferiji prstenaste zapremine livenog gvoždja F uzima konusni oblik i dimenzije predstavljene na sl. 1 koje odgovaraju ukupnoj višini livenog gvoždja F okruženog hladnjakom 7. Maksimalna debljina očvrsnulog sloja je dakle do nivoa N livenog gvoždja.As the initial pipe M pulls upward the initial portion of the pipe T of a height sufficient to engage between the guides or guide rollers E (Fig. 1), the curing front S formed on the periphery of the annular volume of cast iron F takes the conical shape and dimensions represented in Figs. 1 corresponding to the total height of the cast iron F surrounded by the refrigerator 7. The maximum thickness of the hardened layer is therefore to the level N of the cast iron.

Dok je u primeru na sl. 1 centralno ispupčenje 5 primenjeno za košuljicu 6 predvidjenu za obrazovanje cevi Tl bez umetka, varijanta na sl. 3 je primenjena za obrazovanje cevi Tl koja sadrži umetak, Ova varijanta potice od konstrukcije opisane u francuskom patentu 83 11 788 od 12. jula 1983.Whereas in the example in FIG. 1 is a central projection 5 applied to the sleeve 6 intended for forming the tubes Tl without insert, variant of FIG. 3 was used to form a tube Tl containing an insert, This variant comes from the construction described in French Patent 83 11 788 of 12 July 1983.

U ovoj varijanti, koja se odnosi naproizvodnju livenih cevi sa umetkom, uredjaj je analogan onom na sl. 1, ali sadrži još, kao što je opisano u patentu 83 11\788, sredstva za obrazovanje umetka.In this embodiment, which relates to the manufacture of cast tubes with an insert, the apparatus is analogous to that of FIG. 1, but further comprises, as described in patent 83 11 \ 788, means for forming the insert.

U opisu koji sledi, elementi postrojenja identični ili slični onima na sl. 1, a koji imaju istu ulogu noše iste numeričke oznake. Ponovo se, dakle, nailazi na isto snabdevanje Uvenim gvoždjem pomoču sifona 1, 2, 3, 4, koj-i čini postolje ili nosač za grafitnu košuljicu 6 oko koga je hladnjak 7 sa hladnom vodom koja cirkuliše.In the description that follows, the plant elements are identical or similar to those in FIG. 1, which carry the same numerical designation. Again, the same supply of Uven iron is again aided by siphons 1, 2, 3, 4, which makes a stand or support for a graphite liner 6 around which the cooler 7 is circulating with cold water.

Nalazi se isto centralno ispupčenje 5 sa šupljinom 10. Izmedju hladnjaka 7 i postolja 1 koga čini sifon je smeštena pločica 11 koja izolira nosač. Pločica 11 koja nosi hladnjak 7 je od vatrootpornog materijala, na pr. siliko-aluminijuma. Ona je predvidjena da spreči hladjenje postolja 1 hladnjakom 7.There is also the same central projection 5 with the cavity 10. Between the cooler 7 and the stand 1 formed by the siphon is a plate 11 which insulates the carrier. The plate 11 carrying the refrigerator 7 is made of a fireproof material, e.g. of silicon-aluminum. It is intended to prevent the cooling of stand 1 by refrigerator 7.

: V: V

Sredstva za obrazovanje umetka čini košuljica 6 kalupa 6-7 koja je premeščena ili produžena na svom gornjem delu metalnom prstenastom kokilom 12, na primer od Čelika, po osi XX, proširene uvis, dajuči spoljni oblik umetka livene cevi koja treba da se dobije. Kokila 12 se spaja bez prekida kako sa unutrašnjim, tako i sa spoljašnjim zidom košuljice 6. Kokila 12 se hladi sama bilo okolnim vazduhom, bilo mlazevima vode, Što nije prikazano.The insertion means are a mold 6 of the mold 6-7 that is displaced or extended at its upper end by a metal annular mold 12, for example, of Steel, along the XX axis, extended upwards, giving the outer shape of the molded tube insert to be obtained. The mold 12 connects without interruption to both the inner and outer wall of the shell 6. The mold 12 cools itself either with ambient air or with water jets, which is not shown.

U unutrašnjosti, kokila 12 nosi na uvecanom konusnom delu 13 prirubnicu 14a prstenastog jezgra 14 umetka od vatrootpornog materijala za livenje propustijivog za vazduh, na primer od stvrdnute smeše peska i termoočvrščavajuče smole. Jezgro 14 daje unutrašnji profil umetka cevi koja-se pravi. Ono nosi cevni eilindar 15 čiji spoljni zid odgovara unutrašnjem zidu cevi koja zeli da se izlije. Cilindar 15 se produžava ka dnu ispod kokile 12, do izvesne .Inside, the mold 12 carries on the enlarged tapered portion 13 a flange 14a of the annular core 14 of an air-permeable cast-in-place casting material, such as a hardened sand mixture and a heat-curing resin. Core 14 gives the inner profile of the tube insert that is being made. It bears a tubular cylinder 15 whose outer wall corresponds to the inner wall of the tube which wishes to be poured. Cylinder 15 extends to the bottom below mold 12 to a certain length.

višine kalupa 6-7. Cilindar 15 dakle štiti sa košuljicorivkalupa 6-7 prsfcenast prostor 16 koji odgovara debljini cevi koja se oblikuje. U unutrašnjosti, jezgro 14 sadrži obavezno unutrašnji potporni zid 17 ( cevnog oblika od Čelika) nepropustljiv za vazduh i otporan na ten.;.'-ra turu livenog gvoždja.mold height 6-7. The cylinder 15 therefore protects from the molding shell 6-7 a bumpy space 16 corresponding to the thickness of the molding tube. Inside, the core 14 contains a compulsory inner retaining wall 17 (tubular steel) that is airtight and tenacious; cast iron cast iron.

Za postavljanje rastopa u prstenast prostor 16, u pogledu formiranja umetka koji je najdalji, sklop kokila 12-jezgro 14 je dopunjen sredstvima za usisavanje.To accommodate the melt in the annular space 16, with respect to the formation of the insert furthest away, the mold assembly 12-core 14 is supplemented with suction means.

Jezgro 14 je vezano sa svoj nosač 13 u kokili 12 pomoču prstenaste metalne pločice 18 za usisavanje. Fločica 18 nosi jedan prstenast metalni žleb 13 koji se otvara prema prirubnici 14a jeI zora 14, ispod kružnog prstena 16. Iz žleba 19 izlazi kanal 20 vez^n preko ventila 21 za izvor usisavanja koji nije prikazan.The core 14 is attached to its carrier 13 in the mold 12 by means of a suction ring 18. The flap 18 carries a annular metal groove 13 which opens to the flange 14a and is a dawn 14, below the circular ring 16. A groove 20 extends through the groove 19 through a valve 21 for a suction source not shown.

ii

Pločica usisavanja 18 je pričvrščena za kokilu 12, na primer zavrtnjima.The suction plate 18 is attached to the mold 12, for example screws.

U ovoj varijanti, ekstraktor cevi od livenog gvoždja nije predstavljen. On sadrži jednu okrugiu metalnu pločicu 22 nazvamu pločica dizanja, po osi XX, pričvrsčenu za pločicu usisavanja 18. Pločica 22 je pričvrščena za pločicu 18 na primer zavrtnjima i čvrsto je spojena sa jednom polugom 23 za dizanje po osi XX, obešenom za uredjaj za vertikalno dizanje koji nije prikazan.In this embodiment, the cast iron pipe extractor is not represented. It contains one circular metal plate 22 called the lifting plate, axis XX, attached to the suction plate 18. The plate 22 is attached to the plate 18 by screws, for example, and is firmly connected to one lifting rod 23 by the axis XX, which is suspended by a vertical device. lift not shown.

U ovoj varijanti, centralno ispupčenje 5, na primer konusno, ima dimenzije velike osnove takve da je veh centralnog ispupčenja 5 smešten u unutrašnjosti šupljine cilindra 15 jezgra 14, iznad gornjeg krajp'kalupa 6-7 ili košuljice 6. Prednost je da ispupčenje 5 bude više od kalupa 6-7, na sl. 1 kao na sl. 3, jer se tako onogučava ograničavanje zapremine livenog gvoždja u prstenastom prostoru po celoj višini košuljice 6 kalupa 6-7, dok ako je centralno ispupčenje 5 niže od košuljice 6, liveno gvoždje bi bilo iznad vrha ispupčenja 5 pa bi višak livenog gvoždja bio neupotrebljiv.In this embodiment, the central projection 5, for example tapered, has dimensions of a large base such that the vehicle of the central projection 5 is located inside the cavity of the cylinder 15 of the core 14, above the upper end of the mold 6-7 or the shell 6. The advantage is that the projection 5 is more than mold 6-7, in FIG. 1 as in FIG. 3, because this allows limiting the volume of cast iron in the annulus over the entire height of the sleeve 6 of the mold 6-7, whereas if the central protrusion 5 is lower than the sleeve 6, the cast iron would be above the tip of the protrusion 5 and the excess cast iron would be useless.

Funkcionisanje je isto kao ono opisano u patentu 83 11 788.Functioning is the same as described in Patent 83 11 788.

Kod snabdevanja livenim gvoždjem ventil 21 kanala za usisavanje 20 je zatvoren. Liveno gvoždje se uvodi prema strelici f u livni levak 4. Liveno gvoždje F se dovodi do nivoa N šmeštenog u gornjem delu košuljice 6 kalupa 6-7, pri čemu se cilindar 15 i cev 17 jezgra 14 uronjavaju, ali ostaju ispod vrha centralnog ispupčenja 5.In the cast iron supply, the valve 21 of the suction channel 20 is closed. The cast iron is introduced according to arrow f into the casting funnel 4. The cast iron F is brought to the level N sheathed in the upper part of the liner 6 of the mold 6-7, whereby the cylinder 15 and the tube 17 of the core 14 are immersed but remain below the top of the central projection 5.

Kod livenj a umetka cevi od livenog gvoždja kokila 12 koja je u kontaktu nepropustljivom za vazduh sa gornjom ivicom košuljice 6 otvara ventil za usisavanje 21 i usisava vazduh sadržan u prstenastom prostoru 16 pomocu cevi za usisavanje 20 okruglog žleba 19 kroz supljikavu prirubnicu 14a jezgra 14, ali ne kroz nepropustl j ivu cev 17 od Čelika.In casting a cast iron pipe insert 12 in contact with the airtight contact with the upper edge of the liner 6, opens the suction valve 21 and sucks the air contained in the annular space 16 by means of a suction pipe 20 of a circular groove 19 through a slender flange 14a of the core 14, but not through an impermeable pipe 17 of Steel.

Liveno gvoždje ispunjava brzo prstenast prostor 16 umetka do supljikave prirubnice 14a jezgra 14.Cast iron fills the fast annular space 16 of the insert to the flange flange 14a of the core 14.

Medjutim njegov nivo opada u šupljine nepropustljive cevi 17 i u dimnjaku 3 bez puštanja ispod cilindra 15.However, its level drops into the cavities of the impermeable pipe 17 and into the chimney 3 without being released under the cylinder 15.

Liven umetak 16 očvrščava počinjuči od višine, tj . od prirubnice I4a jezgra 14.The cast insert 16 hardens starting from a height, i.e. from flange I4a core 14.

Kako bi se izvelo neprekidno izvlečenje cevi za uglavljivanje dopunjava se nivo livenog gvoždja koji počinje da opada, sipajuči rastop u livni levak 4 sledeči strelicu f za vreme očvrščavanja umetka. Dok se umetak 16 formira i očvrščava zatvori re Slavina za usisavanje 21. Liveno gvoždje sadržano u prstenastom prostoru izmedju cilindra 15 i košuljice 6 kalupa 6-7, kao i kokile 12 se hladi i očvrščava u isto vreme pod uticajem gornjeg dela hladnjaka 7 i kokile 12. U ovoj fazi očvrščavanja sledeči front S, koji nije prikazan, ali je sličan onom na sl. 1, dele ekstraktor, što če reči da sklop pločice za dizanje 22 i kokile 12 ide na gore (strelica f na sl. 3) pri čemu se liveno gvoždje sipa u levak za livenje 4 da bi se zamenio očvrščen rastop -iznad kalupa 6-7. Vodi se računa takodje da se održi konstantan nivo N livenog gvoždja za vreme izvlačenja, malo ispod gornjeg dela košuljice 6 na višini na kojoj je rastop još hladjen pomoču hladnjaka 7.In order to continuously pull out the locking tube, the cast iron level is started to decrease, pouring the melt into the funnel 4 following the arrow f during the insertion curing. While the insert 16 is formed and cured close the suction valve 21. The cast iron contained in the annular space between the cylinder 15 and the liner 6 of the mold 6-7, as well as the mold 12 is cooled and cured at the same time under the influence of the upper part of the cooler 7 and the mold 12. At this stage of curing, the next front S, which is not shown but is similar to that in FIG. 1, they share an extractor, which means that the assembly of the lifting plate 22 and the mold 12 goes up (arrow f in FIG. 3) whereby the cast iron is poured into the casting funnel 4 to replace the solidified melt-above mold 6- 7. Care must also be taken to maintain a constant level of N cast iron during extraction, slightly below the top of the liner 6 at a height where the melt is still cooled by the aid of the heatsink 7.

— id—- id—

Izvlečenje uvis očvrsnulog umetka, u isto vreme kada je smešten u kokilu 12, izvodi_.se neprekidno, kao sto je opisano u patentu 83 11 788. Ispod umetka i u nastavku se očvrščava početak trupa cevi C koja se produžava u svakom smeru postavljanja sklopa kokile 12 i jezgra 14, sledeči debljinu e.Pulling out of the hardened insert at the same time as it is placed in the mold 12 is performed continuously, as described in patent 83 11 788. Below the insert and below it hardens the beginning of the hull C, which extends in each direction of installation of the mold assembly 12 and core 14, following thickness e.

Kad se tako dobije dužina trupa cevi dovoljna za cev Tu formiranju, obustavlja se sipanje livenog gvoždja u livni levak 4 i nastavi se sa brzim praznjenjem prstenastog prostora izmedju kalupa 6-7 i centralnog ispupčenja 5, na primer pomoču unutrašnjeg otvora koji nije prikazan, a čiji se zatvarač izvlači. Dovoljno je zatim podiči dovršenu cev oblikovanu iznad kalupa 6-7 i osloboditi njen umetak iz kokile 12 i jezgra 14 i pločice za . i usisavanje 18.When this is obtained, the length of the pipe hull sufficient for the tube Tu formation stops the pouring of cast iron into the casting funnel 4 and proceeds with rapid emptying of the annular space between the mold 6-7 and the central projection 5, for example by means of an inner opening not shown, and whose stopper is pulled out. It is then sufficient to lift the finished tube formed above the mold 6-7 and release its insert from the mold 12 and the core 14 and the tiles. and suction 18.

Na sl. 1 i 3, umesto da čini integralan deo sa sifonom 1-2-3-4, centralno ispupčenje 5 može da bude telo dodato na porenuti sifon i zalemljeno na njemu.In FIG. 1 and 3, instead of forming an integral part with the siphon 1-2-3-4, the central projection 5 may be a body added to the pocketed siphon and soldered thereto.

U varijanti prema sl. 4, u primeru izvodjenja analognom onom sa sl. 1, šupljina u unutrašnjosti centralnog ispupčenja 5 je zamenjena šupljinom lOa otvorenom sa kraja na kraj, po osi centralnog ispupčenja 5, koja izlazi ka spoljašnosti na unutrašnjoj strani postolja 1 sifona 1-2-3-4.In the embodiment of FIG. 4, in the case of an embodiment analogous to that of FIG. 1, the cavity in the interior of the central projection 5 is replaced by a cavity lOa open end-to-end, along the axis of the central projection 5, which extends outwardly on the inside of the base 1 of siphon 1-2-3-4.

U pogodnij varijanti koja pomoču šupljine lOa otvara prolaz od spoljašnosti ka unutrašnjosti cevi T u formiranju, može da se iIn a more convenient variant which by means of the cavity lOa opens a passage from the outside to the inside of the tube T in the formation, one can also

uvede uredjaj CN za kontrolisanje nivoa tečnog metala'ili još i uredjaj C za merenje debljine oblikovane cevi mereči njen unutrašnji prečnik, jer je nejn spoljašnji prečnik poznat, ili još uredjaj CT za merenje temperature rastopa.introduce a CN device to control the level of a liquid metal, or else a C device to measure the thickness of a shaped tube to measure its inner diameter, because its outer diameter is known, or another CT to measure the temperature of the melt.

Uredjaji CN, CT i CE predstavljeni simbolično isprekidanirn linijama, su označeni u svojstvu primera radi ilustrovanja mogučnosti prilaza ili pristupa unutrašnjosti cevi T, zahvaljujuči toj šupljini za prolaz 10a. Što se tiče posebno merenja ili detekcije nivoa N, datog kada se radi u ovom primeru snabdevanja tečnim metalom pomoču sifona sa spojenim sudovima ostvarenim pomoču kalupa 6-7 s jedne i vertikalnog dimnjaka 3 sa druge strane, sigurno je da može da se detektuje ili meri spoljašnji nivo N, pomoču dimnjaka 3, bar izvan perioda punjenja livenog gvoždja prema strelici f. Ali, videče se u drugim varijantama gde se ne primenjuje sistem spoj enil: 'sudova, da je korisno da se može pristupti merenju nivoa livenog gvoždja sa unutrašnje strane.The CN, CT and CE devices represented by the symbolic dashed lines are marked as examples to illustrate the possibility of access or access to the inside of the T tube, thanks to this cavity for passage 10a. With regard to the particular measurement or detection of the N level given in this example of the supply of liquid metal by means of siphons with coupled vessels made by means of molds 6-7 on one side and vertical chimney 3 on the other, it is safe to detect or measure exterior level N, using chimney 3, at least outside the cast iron fill period according to arrow f. But it is seen in other embodiments where the coupling system of the vessels is not applied that it is useful to be able to measure the level of cast iron from the inside.

U varijanti prema sl. 5 sistem snabdevanja livenim gvoždjem je ostvaren na sledeči način: sifon 1-2-3-4 je zamenjen livnim levkom pod pritiskom 24 tipa grliča čajnika za punjenje konusno zatvorenog poklopca 25. Cev za vertikalno livenje 26 od vatrootpornog materijala preseca gornji zid zatvorenog levka 24. Ona se zagnjuruie skoro do dna levka 24 i dovodi do izlivanja iznad cornjeg zida levka na kratkoj dužini na kojoj je okružena i pojačana konusnim izlivnikom 27 po osi XX spajanja sa konusnim dopunskim umetkom 28 po osi XX na donjem delu postolja la radi povezivanja cevi za livenje 26 sa šupljinom lOb ili 10c centralnog ispupčenja 5. U ovorjprimeru, neophodno je da centralno ispupčenje 5 bude šuplje da bi se omogučilo ispunjavanje livenim gvoždjem i izlivanje u unutrašnjosti lonca formiranog od kalupa 6-7 i postolje la preko vrha centralnog ispupčenja 5.In the embodiment of FIG. 5, the cast iron supply system was implemented as follows: the siphon 1-2-3-4 was replaced by a pressure casting funnel 24 of a teapot cavity to fill a conical closed lid 25. The vertical casting pipe 26 of the fireproof material intersects the upper wall of the closed funnel 24 It is submerged almost to the bottom of the funnel 24 and leads to a leakage beyond the root wall of the funnel for a short length at which it is surrounded and reinforced by a conical spout 27 along the XX axis of connection with a tapered accessory insert 28 along the XX axis at the bottom of the base la to connect the pipes to casting 26 with a cavity 10b or 10c of the central projection 5. In this example, it is necessary that the central projection 5 be hollow to allow the cast iron to be filled and poured inside the pot formed from the mold 6-7 and stand over the top of the central projection 5.

Ma centralno ispupčenje 5 može da se postavi jedan konusni lonac konstantne debljine sa šupljinom kao što je lOb.For a central projection 5, a conical pot of constant thickness with a cavity such as 10b can be placed.

Takodje se nalazi uvečana topla masa livenog gvoždja na donjem delu i aksijalno centralnom ispupčenju 5.There is also an increased warm mass of cast iron on the lower part and an axially central projection 5.

Takodje može da se postavi centralna šupljina prolaza, tj. preseka ispupčenja 5 cilindričnog oblika istog prečnika kao što je unutrašnji prečnik cevi uzlaznog livenja 26, sledeči profil isprekidanim črtama lOc. Cevovod 29 povezan sa unutrašnjosti levka 24 na njegovom gornjem delu, iznad nivoa tečnog metala F je vezan za izvor komprimovanog gasa ili za praznjenje kojim upravlja venti 30.A central passage cavity can also be erected, ie. cross-sections 5 of cylindrical shape of the same diameter as the inner diameter of the ascending casting pipe 26, the following profile with dashed lines lOc. The pipeline 29 connected to the inside of the funnel 24 at its upper end, above the level of the liquid metal F, is connected to the compressed gas source or to the discharge operated by the valves 30.

U varijanti prema sl. 6, kod snabdevanjatečnim metalom pomoču levka za livenje pod niškim pritiskom, analognom onom sa sl. 5, vertikalna cev 26 za uzlazno livenje je zamenjena parom cevi 26a i 26b za vertikalno uzlazno livenje koje presecaju postolje lb lonca koga formira kalup 6-7 i postolje Ib i koje izlazi na donjem kraju lonca, u prstenasti prostor izmedju centralnog ispupčenja 5 i kalupa 6-7. U tom primeru, izlivnik 27 spoja je zamenjen prstenastim umetcima 31 za nošenje i raspored, koji okružuju svaku cev 26a, 26b i koji su smešteni izmedju levka za livenje 24 i postolja lb. Prstenasti umetci 31 za nošenje i raspored omogučavaju aksijalnoj šupljini lOc centralnog ispupčenja 5 da izlazi od svog unutrašnjeg dela ka spol j njem i tako da otvori prolaz za uredjaj za pristupanje u unutrašnjost lonca, na primer uredjaj za kontrolu nivoa CM.In the embodiment of FIG. 6, in the case of supply metal with the help of a low-pressure casting funnel analogous to that of FIG. 5, the vertical ascending pipe 26 is replaced by a pair of vertical ascending pipes 26a and 26b that intersect the pedestal lb of the pot formed by the 6-7 mold and the pedestal Ib extending at the lower end of the pot into the annular space between the central projection 5 and the mold 6-7. In this example, the spout 27 of the joint is replaced by annular inserts 31 for carrying and arrangement surrounding each tube 26a, 26b and which are located between the casting funnel 24 and the base lb. The annular inserts 31 for carrying and arrangement allow the axial cavity lOc of the central projection 5 to extend from its inner part to the outside and thus to open the passage for a device to access the interior of the pot, for example a CM level control device.

Ovo posredovanje naročito ima prednost jer dopusta dostupanje u unutrašnji nevidljivi prostor, koji je, u ovom primeru sadržan izmedju 'centralnog ispupčenja 5 i cevi 17 cilindra 15 jezgra za umetanje 14. .....· · ·.....· ___............................This mediation is particularly advantageous because it permits access to the invisible interior space, which, in this example, is contained between the 'central projection 5 and the pipe 17 of the insertion cylinder 14. ..... ..... · · · ..... ............................

'Ιό'Ιό

P-S 135/8P-S 135/8

NAVOD O NAJBOLJOJ PRIVREDNOJ UPOTREBIINDICATION ABOUT BEST BUSINESS USE

PR I JAVLJENO!? PRONALASKAPR AND PUBLISHED !? FINDING

Dimenzije uredjaja prema ouom pronalasku se mogu jasno sagledati na crtežima priloženim uz opis, ako se ima u vidu da je optimalni prečnik cevi tOOOrnm, i da tolikom prečniku odgovara debljina zida cevi od 15mm.The dimensions of the apparatus of the present invention can be clearly seen in the drawings accompanying the description, given that the optimum pipe diameter is tOOOrnm and that the diameter of the pipe wall is 15mm.

Najpogodniji materijal za izradu postelja, ulivnog kanala, levka i dimnjaka čine poznati materijali za ovakve namene tipa S1O2 ili AI2O3.The most suitable materials for making beds, sewers, funnels and chimneys are known materials for this type of S1O2 or AI2O3.

Ko*vljicu je najpogodnije izraditi od gra-fita, dok je za izradu hladnjaka na j pogod·'^; j i materija! Čelik (eventualno bakar).It is most convenient to make a coil from graffiti, while to make a refrigerator on j it is convenient ^; her matter! Steel (possibly copper).

Claims

PATENT APPLICATION t v E ΛΤ i,

1. A device for continuous flushing of metal tubes / comprising a mold 6,7, which is filled with a pot with stand 1, 1a, 1b, wherein a projection 5 is coaxially coaxially arranged on the axial axis XX of the mold, and in the lower part of the stand 1, 1 a, 1b at least one inlet duct 2 is installed, 2 ^ / 2-8-5 - / = 2¾¾ casting tubes, characterized in that the cavities (10,10a, 10c) of the tapered central projection (5) are open at the bottom the base (1, 1b) and the central projection (5) extending into the annular core '(14) forming a annular space (16).

Device according to claim 1 and variant I, characterized in that the central projection (5) is an integral part of the siphon (1,2,3,4) and is mounted on a stand (1, 1a, 1b) and that the cavities (10a , 10c) of the central projection (5) open at the top and bottom of the stand (1, 1b).

Device according to claim 2 and variant II, characterized in that the pipe ^ £ E £ ends at one end with the casting boiler (24), wherein the cavity (10b) of the central projection (5) is arranged in the axial vertical extension of the pipe _

Device according to claim 3 and variant III, characterized in that the tubes are immersed in the casting boiler (24) and the inserts (31) separate the inner surface of the base (ib) from the casting boiler (24), wherein the cavity (l0b. 10c) a central projection (5) open at the lower end of the stand (ib).

Device according to one of Claims 1 to 4, characterized in that the diameter of the cavity (10c) of the central projection (5) is equal to the inner diameter of the pipe ŠBtSf.