DE1583610A1 - Method and device for cleaning casting baths made of ferrous metals in continuous or discontinuous casting molds - Google Patents

Description

Oipl.-Ing. Dipl. Oec. publ. '

DIETRICH LEWINSKY

PATENT Attorney 8 Munich 21 - Gotthardstr.

Telephone 56 17

Henri Jean Daueean

Method and device sun cleaning of casting baths from elemental metals in continuous or discontinuous Casting molds

French priority from October 3, 1966 ο

^ This invention is directed to the continuous · or

u, discontinuous sliding of Sitenmaesen in molds or

* »In similar forms with a slope with or without

basket '' punier de ooulee) or in the source bit the destination, the quality of the ingots or other cast products see below

Independence & ngig of & §τ type of GteStae is "β very" ohwierlg who "" loht prs & Lisea usmugliohF si * announce "Dej the OitBctrehl ferttnreiiiiswaeen old ti oh leads, w" loht nloh to Oiößbad {t ln de ccul4t) auebreiten _p among others there Oefüg · - Fehltr hexTorauruf "o _t woloh" dreadful V "rluett vtrureachen can" indea ei "cause the segregation of defective areas, which are present in the solidified cast products"

Lahlrtiohe Torriohtuafen have been made »u · the above mentioned mifletand. In particular If you have rorge owls, in the ingot mold you can kill one Swimmers at letters to make a circular motion de · Heteilee to be calibrated »

The results obtained in this way are remarkable it has the disadvantage, however, that it requires both a well-known environment and a very precise monitoring, as an "auoh" limited application. owns area, which is only on beetinet * mold types or beetiaste Ottgarten streokt "

009839/0323

BATH

Di ··· irflBdu & e ttalaft vor, Alt rortrvthBttB Unrollk < htlttB duroh tlBfAt & t WLtUl bu btfetbta and «it AavtaAuafta on AlIt ffttft TMi KokilltB © Atr afanlltht Oltlftvata, gltloh wtlofctr Oltiart · AUiauAthntn.

SrflBAungtffil ktnaitlehatt tioh Aaa VtrfAhrtB but ItlBiguo « τοπ OitlbiAtm eat Xittnattalltn Ib KokilltB AAAurob, »An In Ait Koklllt tlat U & tfrttiu & f tin ·· AltBt

Product ·· causes, vtlohtt tin · hiartithtaAt kin · ti «oh · fire«! · Bttittt «« a on Aat fteoatta · Kttall tint Kr «leb« v »fQag n, ftbartrafta ·« ebtl Atr ltraal At · product ·· in bteuf Aaf Alt AtAIt Atr Kokille tsatBtrlata Ttrtt «ll% uaA ftfta Ata uattrta TtIl« trlohttt let.

Dae βο in Lauft Att Gltfttnt tlB ^ ttprititt product k * na CAtfOraif ttlB «ΒΑ btlapltltvtltt au · tlata 0At btttthta« wtlohtt alt dt * OltftaA aioBt raaflarti abar Alt ···
Product aaaa amth aut fttttn ftilohaa baatthta »« tltat Ib btsug on Aat BaA latrt aiaA tAtr, aaAtrtrt «lt · old dta Bad rttfitrta · ua tlat ohtaltob · itiBliBBgevirkaBg ■ u ftvahrlth tlthBtBf
iiiasug «itllt.

00983S / 0311

Erfindungageciäß check the device identifies sub purifying Gießbädern aua Sissnmetallen in the mold characterized in that it comprises a Roiiraneatz which you a non-compact products "allows injecting into the mold, said opening this · Rohransatieβ in respect to the axis of the mold is sxsentrisoh and is directed towards the lower part, and the device also has means which are primarily intended to regulate, inter alia, in the course of the operation tlsn the distance which separates the splashing of the Kohransatsee and the free surface of the pouring bath.

In particular, the sun can inject the nioht co-compact Produktβ8 intended Rchraneat «sohlangtnfurilg trained and feet in the mold, where dleee Snake consists of a material which is Heat of the casting bath is soaked out as sin Ib 4tr Heat releasable material or tin material, vtlob ·· Able to calibrate the brakes.

Other properties and tortsiis of the Srflndoag srgsban

from the following Beeohreibuiig.

009839/0323

BATH O-. -'i.

In the attached · ». Drawing mean:

FIG. 1 shows a vertical axial section through tint mold A, whose cross-section «in square with rounded Corners is and the «die sehsmatiseh In the mold Way represents that tit (for simplification of the Description) can be viewed as "daS" it according to one of the features of the invention eovohl the discontinuous pouring with gradient or from the source, as well as the continuous flow can serve

Figure 2 is a top view of Figure 1,

FIG. 3 is Tellan, a modification of FIG. 1 and FIG. 4 is a plan view of FIG.

Looking at Figure 1, "isfet Ma As KofclH · A _t wtlsm * sit your *" Par al 1 el t ei tea on "iftta Ormnd 1 rests. SU,. ICokille is equipped with the device 0 gstAi of the BrfittduBf «mgeetn under Ö« fälie gsBäi the beam B is on HiTe & u 5, shown, noticeably in the middle.

009839/0323 _BAD original

The device C consists of a tubular snake 1, which is rolled up into a snail in such a way that this snake dips into the glass bath at an angle τοη about 30 °. The snake 1 can have an outer contour which is circular or oral or approximates the shape of the inner collar of the mold A, In all cases the dimensions of the snake are such that the snake leaves an inner, large enough-smelling passage is that the GieSctstrahl 3) does not feeepritgt the snake. S & s tube, which forms £ 1 * length 1, consists of a material which, in contact with the cast metal, can be melted or is calibrated. For example, the snake can be made of ferrous metal or of alloys with a sufficiently low Sohmel point. The coil can also consist of a cellulose material which has been made non-flammable and mixed with a fire-resistant material, this material having been formed by molding or extrusion. When casting τοη steel, smn btifpitlswtif * a hlrttreaste steel, which has a high carbon content * You can go au.oh air. Tube au »little superficially oxidized aluminum, copper, or silicon Za r.k TtrwjmdeRi wüneeht when einiubringen one in the steel" inen btstitBisttn content dieeen metals "

009839/0323

The snake 1 has a horizontal part 1 * at its upper end, which ends in a cock 2. The HH 1 * attaches Bioh to the upper edge of the mold B uittfcle of a holder 3 »which can be quickly attached.

On Hahn 2 there is a not shown, known to me Device connected, which allows ea, in the queue 1 a liquid ·, gaseous or preferably Powdery product on a watch or a mixture of these Products, and ewar with a kinetic energy which appropriately iat, among other things, the pouring bath, which is in a fluid state, a noticeable circular movement, among other things, the achae of the Grant eu mold. If you consider the composition of the Do not want to change the casting bath, a metal of the same type (ferrous metal) is used as powder or as grains or an inert gas such as argon or carbon dioxide. But one can also make use of this comment Hutien see, in order to accomplish a ·! Attachment sub Metall de · Qießbadee su in a manner known per se. Sm Material brought in can be such an oxidizing agent as iron oxide »manganese dioxide, or ·· can be a reduction agent like aluminum, silicon and their alloys.

009839/0323

BATH

The application of the invention & SEN device dl · following assigns Prior to casting "to the queue 1 in the mold A at _t wherein the inner end of Sohlange is stopped at a sufficient distance rom the bottom B, zv to Spritser. avoid, which are triggered by the impact of the casting jet D on the ground B. Sliding the part 1 ^a of the snake on its holder in the Weioe that the vertical axis XX coincides with that of the axis of the Sohlange Gießetrahleβ D. The pouring begins, with the jet B generally hollowing out the ar and B according to a concave surface 4 and generating a spray wave which is extinguished at the level M. Then the boat 2 opens, so that the material can pass under pressure, so that I pour the material into the casting bath M according to the arrow F (FIGS. 2 and 3) and make a circular movement about the axis XX according to the arrows F ₁ granted. The movement continues corresponding to the rise in the pool level. Meanwhile, from level I to sub level, the snake 1 consumes due to the ambient temperature and describes an arc 5. At level H _{2 the} snake plunges back into the bath, but is consumed over a length which is equal to that of the arc. 6 is the same and the appearance is repeated up to the upper level 4 Guesee. One of the remarkable effects of the invention * -

009839/0323

BAD OF

According to the procedure, the slope is at the level N ^, where the surface of the bath is hollowed out into a cavity in the pore of a cap which is noticeably parabolic and extends between level N ^ _ft and Hj. Under the action of the centrifugal force occurring as a result of the rotation of the bath, the impurities which are carried along by the GIe 13jet D collect at the bottom of the bowl at different levels N ^ _a and N ^ owing to their low density in relation to that of the metal Mo Am At the upper level of the cast N ^ the snake 4 , following an arc 6, remains immersed. The impurities in the casting bath remain largely removed from the side surface of the mold, which is why the known surface defects are eliminated. Aue · earth allows the movement to the upper part of the bath as a result of its rotation in combination bit of the heat insulating effect of the sohioht on impurities 12 and the effect of the heat insulating and / or exothermic cladding B, which opens the mold, as well as possibly the effect is one · Bedtokungepulvtr "welohes at the end of Giedens on the bath spread, DSJ dor top of the line 1 can be surüokgezogon without difficulty * the funds remeideμ aiiü s order the return passage hollow spaces _s we Io hey look ia proceeds ύον solidification of the described Barrens form, eowie dent SlnsonluB

009839/0323

BAD ΰη.ί-1,.,. ·.

- ίο -

of gas bubbles and fatty impurities within dta Barrens ο When the product immersed in the casting bath ni-'s the casting bath reacts, ao joins the physical one Cleansing effect, which is roruroacht by the described movement, reducing or oxidizing effect.

In a modification, the device C waist on a winder 7 which is attached to the upper edge of the mold. On the winder 7 is a link 8 Rügen ν = chi oc son, which is resistant to the thermal radiation of the cast metal and ends in a hoop 9, which is tied on the lower turn of the snake and at its end. At the beginning the connecting link θ is unrolled. The inner tension of the winder is not shown, with the help of a "wheel" 7 * regulated in such a way that the end of the loop "1 reaches the binding surface or M" mm band of the oittim is separated by an even distance, which can be of advantage in terms of the physical and / or similar effect of the material thrown into the bath, in particular in the case of a reduction or oxidation medium which is in a granulated state ouded

009839/0323

BATH ORIGINAL

Bio application of the design of the device similar to that of the rorherbeeohrebenen, with the complementary Voreiohtsnaenahae is that one has the Hoif 9 aa attached lower end of the snake and MA the winding-up of the deployed link 8 by the winder regulates, inter alia, the weight and leveled skins the resilience of the snake innpenaieren what about the wheel can be beatiant by Regelaarken which have been attached beforehand as a function of the material, aue to whom the snake stands "

FIGS. 3 and 4 show the use of the device B in a further casting block A ₁ , an inner part of which is shown schematically in a partially vertical, axial calf's shape. The arund B (Figure 1), which carries the discontinuous casting mold A, is here through the base B _{1 the} beginning of the continuous casting, as shown (Figure 3) and vxi. t rereehen a Dichtussgererbigation 11, among other things the Bfielraum auezugleiohtn, which facilitates its approach. The device C is not subject to any changes

009839/0323

BAD .0; ■ · .-;

According to a modified Ausführungsfore the invention is dae end of the queue in a certain distance dee levels NH * on the basis of this, stopped, as the · let in the figure 1, the case "wherein dae Vtrspritsen welohee, is caused by the impact dea Gießetrahles D ₁ , is suppressed in the casting bath H _1. The winding up of the binding material 8, which adjoins the hoop 9, is brought about by a suitable regulation of the winder, which a * upper part of the mold is arranged * In this case it is sufficient that the snake 1 is able to hit the ground sufficient to prevent the destruction of the cast metals from the effects of the hit irradiation «

The uses and advantages of this inclined device, are analogous to the previous examples. The fact that it can be used for all mold types Is one of the advantages of the invention, which is far from sick a simple check of the attached fiobauagm results. The injection pipe can also consist of an "eiafaofc * lohr, which is scaffolded on its" lower ladder the opening of this tube dura formed Ut, 41 <* * - to reach the surface of the bath or but of the same s «τ · γ ^>

Me * Furthermore, one may as well · Qleflen AUOH au · · the source into the mold into perform because of Sentralen opening 10 (Figure 1 and 2).

009839/0323. pmt ^ tw ^ ^ ^ -

ßAD üfiiüiiw

Claims (1)

m * g. Dipi. oe "a *. 26 Sep 1967 PATENT LAWYER Uf ? <Γ ' ^ü eMonchen2I.GoHhardttr. 81 «13- ^ΤΓΟ ° Te / «ton M 17« 2 Claims 1. Process for cleaning casting baths from EistnBttftlXtll in chill molds, characterized in that nan tint JSitt Spritzimg of a non-compact product ·· in the · mold causes the product to have an exhaustive effect Energy possesses to move on the cast metal tint Krtli movement to be transmitted and the beam dtt producttt with respect to the axis of the mold txstntriseh 1st and ßogon the ground is directed. 2. The method according to claim 1 _f thereby gtktnnieiohntt, AaI dae non-compact product which ·· is injected into old mold, a gaseous product JLtt, btltpltltweioe an Oae which does not act bit dta casting bath. ο A method according to claim 1, dadureh dae not koapakt · product wtlotet "1""is getpritst it Kokltt ·, except · fat Partiktln 1μ · · · or pulrtrieltrttn material b"_# tttht. 4ο Method according to claim 3 »because of this fektnnitiohntt, .Aft · ait fttttn particles from J3ieenprodukt * n fttUlAtt wtloh «nit dtB öiefibad nioht 001119 / 03It -H- 5. The method according to claim 3 _f, characterized in that the product injected into the casting bath in solid particles reacts with the casting bath in order to ensure a chemical cleaning effect » 6c method of claim 1 wherein _{f t} tfafi in that injection is effected at a depth which is vorbestieet with respect to the free surface of the casting pool, which "is the height of the surface in the mold. 7. The method according to claim 1, characterized in that it is worthwhile you can feel the injection on the surface of the 'Makes the watering bath. 6. The method according to claim 1, characterized in that the Sinepritsung at a constant level above the free Oberfittote dee pouring bath roraiwrt. 9 “A service for cleaning casting pools on the mold, characterized in that it has a tube attachment (1) which allows a non-compacted product to be fed into the mold (A), the opening of this tube attachment in with respect to the axis _y (XX) of the mold. eccentric 1st and against the floor gtriohtot 1st, and the device also has a smock, 009839/0321 BATH O ■ · ' ~ 15 - which, in addition, are provided for Pour regulate the distance eu, which dit BinepriteÖffmiag dee Rohranoataes (1) from the free surface of the (Heibade * separates ο 10. Device according to claim 9t characterized »eiebnet, ta * 'The sum of injecting the non-compact product attached to the mold, the snake being aue tinea Material, which by dl Hitee de Oieibade is eliminated, beiepielewei ·· one in which we »· eelUMlMfjft · * Material or a material which is · subject to use c H ₅ Device according to claim 9 »characterized in that the pipe socket Bum injects in the mold is movable and is connected to a winding device (7) which is carried by the mold, the connection being ensured by a connecting link (8) * , wjlone · in the leohbartohaft 4 · "BiM |" i ^ ÜffMMf iet, whereby this Rohranaat · «αβ one" consists which · hiteebeetändlg iet. 009839/0321 BATH L e e r s'e i t e