DE2025736A1 - Method and device for the treatment of metal blocks - Google Patents

Description

ΟϊρΙ.-Ing. Dipl. C-; o. p'DI

D; st: i! .R s'SKY May 26, 1970

ΡΑΤΓ · τ -:., «-, - τ
Mönchs « 21- *; ;.;. ordstr. 81

Telephone;. '■ U 02

cas J ¹ Henri Jean Daussan

Method and device for the treatment of metal blocks.

The invention relates to a method for the treatment of metal blocks, which without stopping should be formed, i.e. very shortly after filling "the Ingot molds or similar forms. The invention also relates to a device for carrying out this method.

It is known before pouring one

Metal, e.g. ferrous metal, in the upper part of the inner surface a mold or a mold or a heat-insulating and / or exothermic insert in an attachment. This insert, which is used when forming the block or casting remains firmly connected to this, should the liquid Keep the upper part of the solidifying metallic casting bath liquid so long that the block as a result of the Shrinkage of the same forming cavities through that in the upper Part of the metal that has remained liquid can be filled in *

009850 / W. ÖS

It is also known the effect of the

called lateral insert through that of a heat insulating and / or- exothermic powder, called cover powder, to complete, which on the surface of the casting bath during the filling of the mold or the mold or immediately afterwards is applied.

With the known methods you have to

after the molds or molds have been filled, they are placed on the casting surface let rest until the metal contained in them has solidified enough to allow the shaping and displacement of the shaped blocks without danger. This danger concerns the quality of the block or casting and, in particular, the safety of the molding and releasing of the Giessflache entrusted persons, which splashes of not yet can receive solidified metal.

In practice, for blocks with a

Weight between 2 tons and 100 tons, the shutdown time, which depends on numerous factors, is generally between 2 and 6 hours, and this time has not yet been reduced despite the precautionary measures taken during the pouring can be reduced by an hour. This creates considerable Costs, not only as a result of the fixation of the molds, but also as a result of the heat generated during this Shutdown is broadcast and has to be delivered again by heating ovens, eg soaking ovens.

The purpose of the invention is to reduce the shutdown

zelb and the corresponding heat losses largely su reduce and at the same time to achieve a better behavior of the blocks or the like during their solidification.

The method according to the invention for treatment of metal blocks, which are to be formed shortly after filling the molds, and before pouring on the inner surface of the mold and / or its attachment in the parts above the same a heat-insulating and / or axothermi-Bühar Insert is attached, which remains connected to the block in its shape feet, is marked daduroh, that the stake can be played without playing with its lower part

0 0 9 8 5 0/1 4 6 5

- ⁵ "2025738

the inner wall of the mold and / or its attachment according to a tight contact surface that over this tight contact surface a narrow circumferential cavity between the Inner wall of the mold and / or its attachment and the side wall of the insert is, and that this peripheral cavity with the outer space at the top and with the inner space of the insert through at least one lateral opening which is above the tight contact surface and the filling of the peripheral cavity by the molten metal at the latest then made possible when the casting bath has reached its highest level in the mold and / or its attachment.

The molten metal that has filled the peripheral cavity solidifies very quickly in its Contact with the inner wall of the mold and / or its top in order to form an enclosure around the insert, which ensures the lateral protection of the same during molding and during the following operations.

According to a preferred form of exercise

of the process according to the invention, a heat-insulating and / or exothermic cover powder is applied to the surface of the casting bath brought during the filling of the mold and / or its attachment, at the latest when the casting bath is its topmost Has reached mirror height, this cover powder the downward movement of the surface of the casting bath in accordance with the sinking of the block and the filling of the peripheral cavity follows and facilitates both processes.

According to an advantageous form of exercise

During the process, a cover is formed on the upper part of the casting bath, which is firmly connected to the metal as it gradually solidifies in the zone adjacent to the insert, the molding of the block and its removal from the one provided for pouring into the molds Place take place as soon as the middle part of the block which has not yet solidified is completely shielded from the outside, in particular by the protective effect of the cover and that of the same solidified in the peripheral cavity after the filling. Metal _e

'009850 AU $ 8

The combination of. Means, soft in it

is the upper part of the block or casting to 8chutsen ₉ that it is characterized equilateral surrounded with a metallic Uiiifangeeinfassung and a cover secured to the block ,, therefore yields the solution of the Yollständige Aufgabej, soft ₉ consists virtually any of the blocks .Festlegung after, while to avoid the filling of the mold without risk of splashes of liquid metal transport of the blocks.

The erfiadungsgeniässe apparatus for practicing the above method is characterized ₉ that the outer surface of the wäriaedämmenden and / or © »thermal insert a lower part v / eist,% -zeleher a dense B @ ~ agitation with the mold and / or their Aufeats allows _s and which is followed by a part with a slightly smaller diameter, in which at least one opening opened to produce a connection between the initial cavity and the inside of the mold

In the case of a bucket, advantageous delivery shape

of the apparatus, the lid in advance manufactured ®md comprises connection means _{9 s} S B ₀ anchoring point ₉ aar V © rbiMnaag with the nascent metal solidification in

At sia © r

Beekel in the mold itself in B © ruhrua; g with & ®m Gi © © sbai formed by means of a product taught on the surface © of the same.

The Erfiaiaag is aachsteh © nfi ®mt © r! © ■ = ■ sugnahiae on the drawing b @ ispi © lshalb © r sr purifies ο

fig _β 1 is oiae laag © & qt line 1 ° Ί

Pig. 2 cut-away side view @ iia © r first excerpt of the Siasat3®s _{0 arranged in the upper part of a mold}

Fig. 2 is taken along the line XI-IX of the Pig. 1 cut top view «

FIG. 3 is derived from FIG. 1

Partial view after the insert has been supplemented by a prefabricated one Larger scale lid.

Fig. » 4 is one of the fig »1 sntspreohend® View after supplementing the mission by © iiien si oh at the

009850/1 t> 85

Λ ⁵ '"2025738

Contact with the lid forming the semolina bath.

Fig. 5 is a taken along line V-V of FIG

6 a sectional side view of a second embodiment of the insert.

Fig. 6 is that taken along line VI-YI of FIG 5 corresponding plan view in section.

Fig. 7 is a view taken along lines VII-VII

8, a sectional side view of a third embodiment. form of use.

Fig. 8 is the corresponding brewing view *

Fig. 1 and 2 show a mold A ₉ thereof

Cross-section roughly the shape of a square with rounded corners Has. In this mold there is a according to a first embodiment of the invention trained, on the whole with B bezeiohneter Use arranged. This insert, the upper edge 2 of which is lower than the upper edge 1 of the mold, is made up of four pairs symmetrical plates 4a and 4c or 4b and 4d formed « These plates are in contact with one another along edges 5 and 5a, which are symmetrically inclined with respect to a vertical plane passing through the longitudinal axis T-T of the mold A. In addition, the edges 5 and 5a are in relation to the walls the mold at an angle. Thanks to this arrangement, the plates 4b and 4d behave towards the plates 4a and 4c like wedges, their Drive in achieving a very good pageant of use in the mold.

Ee it should be noted that in the figures

the mold A is shown with an inner wall 3, whose Generating lines are parallel to the longitudinal axis Y-Y. In general one gives these surface lines to facilitate the shaping »an inclined position called" taper ", so that sl, e either converge up or down. However, this fact has no significance for the invention, which for both upwardly converging surface lines as well as for downwardly converging surface lines is applicable .. As a result of this Indifference are shown in all figures molds without taper.

As from the vertical cut of the insert B the fig. 1 shows, this has from below

009860- / 1485

above three zones, namely eiae lower 2oa © _B i @ ren outer wall β on their entire circumference without play in eager contact with d © r inner wall 3 of the mold A is ₉ eiae Mittler® zone, d @ r @ n outer wall 7 with respect to the W & nä 6 gtirüek lies ₉ se that © in the circumferential cavity G between the wall 7 sM d © r Xan @ nranä 5 of the mold $ and an upper hoa © _ß d © r © a Äiass © Jäwan & 8 with the inner wall 3 of the mold rut on © ineia feil itoes ümfaags is in contact, ta in places ITbsSg © 10-guisehen dar Wall 8 and the wall 3 are formed »The deduction © 1O ₉ of which in fig« 2 there are four siaö _p s © ts © n ö © n circum® hoiil = space C with the outside space in connection <> loosely through the middle zone of the insert lateral openings 9 _y which open the circumferential cavity C with ÖQm Inaenrasim des liasatges B Ιά connection eetzea ₀ Dies® 9 ₀ -won d®n © n In Figo 2 there are twelve “have the form v © a voa iaaea aack aössea inclined canals, the deepest rope of which lies la a © r AusseawaM 7.

Γη fig «1 is still the mold from =

filling molten metal M is shown "over the free surface of which there is a layer of a heat-insulating and / exothermic cover powder Έ , the task of which is explained below,

Fig »3 also shows a sheet metal cover 13»

which covers the molten metal M and the Beck powder P and is provided with four anchoring rods, of which only two, 14 and 14a, are shown. These anchor rods penetrate obliquely into the molten metal M © in »

The method using the above apparatus is as follows

1.) Before pouring, on the inner wall 3 of the mold A, the four plates 4a, 4b, 4o, 4d “welohs overall form the insert B, arranged so that the Oböi'kante 2 of this insert slightly below the upper edge 1 of the Column A lies. As already explained above, the wedge effect causes which erzer <t by the inclined position of the edges 5 and 5a is, along which the plates 4a, 4b, 4o, 4d touch each other, that on the one hand the insert B at a fixed height Is held in the mold A, and that on the other hand, a loading

without play between the outer wall 6 of the lower zone 009850 / U85

- 7 - 2025738

of the insert B and the inner wall 3 of the mold A produced

2 ·) The molten metal M is in

the mold A is poured in, whereby this pouring can take place "in a falling stream" (through the upper opening of the mold) or "in a rising stream ¹¹ (from below). This pouring is continued until the free surface of the molten metal bath reaches the the left! part of the Mg. 1 and 3 with NN. This mirror height NN must be below the upper edge 2 of the insert and slightly above the lateral openings 9. The molten metal M penetrates through these lateral openings into the circumferential cavities C and gradually fills it out, expelling the air contained in it, which, like the gases released from the molten metal, escapes through the flues 10 into the open.

3m) During the pouring of the metal K

into mold A, at the latest when the casting bath is at its top Has reached mirror height N-N, the cover powder P is poured onto the surface of the casting bath. This powder possesses the property of forming a soft crust on contact with the casting bath, which corresponds to the profile of the sinking surface of the bath follows exactly. This sinking in, which at the same time from the escape of the gases contained in the molten metal M and the filling of the peripheral cavity C by the metal originates, the surface of the casting bath hollowed out according to that in the right part of the pig. 1 and 3 shown profile Ha-Ha.

4.) Simultaneously with the hollowing out of the

The molten metal M begins on the surface of the casting bath to solidify in the part which is in contact with the insert B. stands, namely first in which the circumferential cavity G filling part, which forms a thin layer between the mold A and the insert B. In the right side of the fig. 1 and 3 is the solidified metal by oblique hatching and the still liquid metal through horizontal hatching shown.

5.) As soon as the casting bath has reached the mirror height H-N and the Deekpulver P has fallen on its surface

. 0 09 8 5.0 / U 85

"8-2025738

■ Bracht viUT & e ₉ is prefabricated as quickly as possible © cover 13 is put on »This beak adheres with its circumference to the metal, which is located in the position of insert B and begins to _{solidify 9} so it quickly "U ® is firmly connected to the block make this ¥ © Rbia <iuag tighter gu, the lid with" f © lithe insurance agents provided iferden _p 2! _e B "can the äargestellten in Figo 3 bars 14 and Ha ₅ wlehe deep into the zöers & © rstreMen part of the semolina penetrate ₀

6β) Mack can make these operations

The metal bloom M is formed almost immediately by the usual means without waiting until its middle part, in which the longitudinal axis YY, has solidified up to the top attached dachshund 13 eaö from use B eiB, closed © a ₉ "weloner in turn solidly with a block through the Metallsiafassiaag in Beruhriaag g®hs, according to © n VJiM \ ialciie by the same so Infaag ia d @ a Uafangshohlraö® C solidified Metal is formed © The block kaim send would be transported ₉ oto.e iass ®ia® provided after casting ifeden inuss ₀ and oha © iass su be feared that the block will be drilled through and the these Operations in front of a © hm © ad @ n Fersoaoa g © fafe.Fd © tx ^ ®r => den «,

7o) The formed block vl ^ ä transported up to the heating ovens ₉ where its solidification ü & nli de® if the S-tillsetausagsseit and the hisrdurea ®atst © te. @ M © a Oa me losses under ä® & liiasiclitlicii der Kost @ a uad der Quality favorable conditions su lad © g @ ht ₀ If for some reason this transport sa den fieföfea aie-Jat immediately, the Block® sa © iaor Iw ß-feellstelle can be brought in for a new operation ii® GiesBgi? Ube or eis © aa.d © pe sun Filling the Iokill @ a ¥ © rg © SQhea Stell © freiffia © l?. © .öo

fig ο 4 seigt © lüg aaä © ra Art ö © f AMeelsaag iios Qb-ZVQR 5? eiL ..- iss ClisssfeaoeSj b @ i we 1 © kor nielrt; more eia -O'rgcfGFidgtGx 'In-ütel feeiBatgt \ rlva ₉ »ύηύ®τη ®Ui B@elr.0l ₉ v <s1qIm iii & c? Kokille -v: u.bfst dii'reli lerulnfiiiif? salt d © m # i © ssl> ad aitt © ls

Ö985Ö / 148 5

" ⁹ " 2025738

of a product P- is formed, which after'dem exothermic Powder P is brought onto the surface of the same® This product P- is a deek powder which has the property owns, thanks to dureli, the Giesabad. and the eaeotksrmi & eh © Powder P developed warmth - form a hard crust, t? © lefee It solidifies quickly enough to make one, goei gas tea Form cover to protect the upper rope of the bloclcs sa., This powder can possibly be a natural or icusetlielies Binders are added ·. . ·

In tlesij the left part of the fi; \ c 4 is that

Product P-. Presented at the moment "in which it was brought in a powdery state aal * ü« s exothermic! See Bilves · Paiaf «. On the reehteii "page of .glsiciieia Pigmr ± the product P ®T. !, shown after it has solidified to form EISAS lid over the Siessbad." Mm äiemem reelateja 2 © goes out il following i

1.) The one of the product P ^ geMlööt ©

The lid is not in contact with either the bath M or the exothermic powder P which is located in the Sber aiasem. Once the lid ßaalieh P reaches a sufficient strength iIAT _{s <to} custody to carry himself, he does not follow the Bineinkea of iiesa "badös more whose Surface_ be lost from the AFE Beofcel. . .

2 ·) The Deekel P ^ is not exactly "E © a".

the slightly upwardly concave, since the moment aeiaer Erstarraag the sink line of Siessbadee already made verifiable füKLbar hst _e

. 3 ·) The cover P ₁ is firmly attached to the us.

linsatz the enclosure formed around the darak in. the lafangehohlrauii C eratarrte connected metal ₉ because this also dl © lateral öffnuagen erfallt 9 *

Ss is no eh BU notice., Äasa in ä && suffer filing the fig. 4 di © lateral openings 9 aaf swei ''"'": ■■■ different heights in the middle sone of the linsatzee liegose, Bies® version modification compared to the Fig * 1 is not directly due to the difference - the' training äae Beekeie »wipe Embodiments of Fig. 1 in the 4. bound & o

.Fig. 5 and 6 show a gemase a ' »Wide embodiment of the invention trained.

"■" 0O9Ö50 / U8S

B ,. Here the upper edge S of the insert is higher than the Ot -.-- edge 1 of the mold A ₅ so that this © with the metal M b :. - at the height of this edge © 1 can be filled ο besides © m "t * '*? r" .tfS3n äie the ri®r S © it @ mmnd of the insert forming plate = · ..- · - 11a »Hb ₉ 11c ₉ Hd shoulders 12a, 12b ₉ 12c ₉ 12d ₉ which ^; -, - aa 4ör Obsrkgi & te 1 support the mold ₀

With this slide. Show embodiment

r - Fis / sien lateral openings 9 and suction "10 as b © i dar • ü: - ^ - = en AuBftüiruagafoi'® on _o your lateral laatea touch _ä ; .- 'V-iüJi siaaaö © r not but are eLuroJa , Animal "wedge-shaped • '■' v.iß ISa ₀ ISb ₅ 1Sc ₀ 16d separated ,, which © with the, rounded i: 3r: c = a äö? Mold Δ is. Touch stand _g aad whose BiMruoken t, i? iisii1; e Ifsrfeiafiuag ztiisoaen äer Inaaawaaiä 3 eier Kold.ll © ίϊ-jl * der Aesoisawaiaä 6 ä © s naterea Ibsoknittia Sess llasatgss B. iv - ^ ^s ^ t © ll-t "Dia! feile 16a ^- ₉ 16I) ₉ iöe ₉ 16ä have the height according to ■ ve- .: i dia Flatten 11 a ₉ 11b _p 11o _P 11 d © ia © middle 2 © ae ₉ d © r @ a ii »i: j = jeawaaä opposite the a © r At the moment ioa® lies behind _p inter alia through wcioks lateral opening @ a 9 for the passage of the liquid Ifetall® enter * Bia among other things the linsats IL η @ η »öuroh the solidification of the metal in the surrounding cavity C gafeilöot ©

is "Yeh ©!" run © nfi ₉ as b © i for the first execution = ■ 'of invention ₀

I ³ Ig ο 7 UM 8 a © igsn ®ia © a gemass oiasr Execution forum a © r Irfiaduag imsg © leads @ n liasats B ₃₀ As in the Torhergahandea case, the © 0b © rk © nt © 2 d © s liaaatses is higher than the upper edge © 1 d © r mold Ao Hi © r bisstigfet, however, the lineatg B ₉ from a © insigeia StScIs ₀ @dQr wonigstaas its upper Afescshnitt bositst © in ©
so that the liquid metal Ms zn © ia © ^

gejiCisssH. '«© rdea ItSHH ₉ wsleh © high alo äl @ H © k® dar der Kokill © is« Hierdöraii fiird a © ah oil © Ii®t © lls © ng © sttä * ^ «welaha'in di © glsicii © Kokill © -A tJi © obeia © iag © go®ssn -.v.-ri-lOE Isatin υ ia ä © r BiaQ & ts B ₁₉ gl @ i @ hsQitig Qiaeia. lafsats fir <i L ^! © kille forms _o "

Dar Slasats B ^ sathilt oli © gleioM @ a ssit «

■ H-'f3ii Cl ffamagen 9 uad dio same rejection 10 as the insert © Ά »ad B * _β Βθγ above © section i © tj®d © eh double-walled WtA bo»

0 9 8 S 0/1 4 8 S "BAD

20213738

consists of an inner wall 17 extending upwardly the middle zone and a sleeve-shaped outer wall 18 _? which is in contact with the inner wall 3 of the mold A "The walls 17 and 18 are united with one another at the level of the upper edge" of the insert by a ring-shaped connecting part 19 in which the triggers 10 are formed. The ring 19 can consist of several parts, which ia per se. are combined with the walls 17 and 18 in a known manner. However, it can also be cast onto the walls so that the entire arrangement then forms a single piece.

The invention can of course be modified

However, all modifications are in particular the following main advantages offer:

1 ..) Greater security for the staff ·

2 ·.) A shorter definition of the molds "

3.) A saving in heating in the deep furnace.

4.) Better quality of the blocks. There

namely the insert through which solidified in the circumferential cavity Metal is bandaged and the temperature of the soaking furnace is considerably lower than the melting temperature of the metal the exothermic cover powder its effect to the full The block continues to freeze, and it remains liquid metal available to fill the hollow spaces of the block until it is in the soaking furnace »

009350 / U85

Claims (1)

Claims 1 ·) Process for the treatment of metal blocks, which are formed immediately after filling the molds should be, before pouring on the inner surface the mold and / or its attachment in the upper sections of the same a thermally insulating and / or exothermic Insert is attached, which sticks to the block when it is molded, characterized in that the insert (B) with its lower section (6) without play against the inner wall (3) of the mold (A) and / or its attachment according to a tight contact surface defines that a narrow circumferential cavity (C) lies above this tight contact surface, which is located between the inner wall of the mold and / or its top and the side surface of the insert, and that this circumferential cavity at the top with the outer space and through at least one lateral opening (9) with the inner space of the Insert is in connection, this opening above the dense contact surface and the filling of the peripheral cavity made possible by the molten metal at the latest at the moment in which the casting bath (M.) is in the Mold and / or its essay its highest mirror height (N-N) reached. 2 ·) Method according to claim 1, characterized characterized in that a heat insulating and / or exothermic Covering powder (P) while on the surface of the casting bath (M) applied to the filling of the mold (A) and / or its attachment is, at the latest when the casting bath has reached its uppermost level (N-N), this cover powder the downward movement of the surface of the casting bath in accordance with the sinking of the block and the filling of the peripheral cavity follows, thereby facilitating both of these operations. 3.) The method according to claim 1, characterized marked that at the upper part of the Giessbadee a Lid (13) is formed, which is in accordance with the gradual solidification of the metal (M) in the insert adjacent zone firmly connects to this metal, the formation of the block and its removal from the for the 009850 / U 85 Filling of the molds provided will be done as soon as possible not yet solidified middle part is completely isolated from the outside, in particular by the protective effect of the lid and that of the in the peripheral cavity (C) after the filling thereof solidified metal. 4o) Device for carrying out the procedure according to claim 1 with a heat insulating and / or exothermic Use, characterized in that the outer surface of the insert (B) has a lower portion (6) which is in tight contact with the mold (A) and / or its Essay can come, this lower section is followed by a somewhat recessed section (7) in which at least an opening (9) for establishing a connection between opens into the circumferential cavity (C) and the inside of the mold, 5 ·) Device according to Claim 4, characterized characterized in that the lower portion (6) of the outer surface of the insert (B) extends over a small part of the height of the same extends from the lower edge of the same, and that on the one following the lower section somewhat backwards Section (7) was followed by an upper edge strip extending over at least part of the circumference of the insert 6.) Device according to claim 5 »thereby marked that the upper edge strip with its circumference s cut from (.8) on the inner wall (3) of the mold (A) and / or your attachment * 7 ·) Device according to claim 5 »thereby gt indicates that the top bar is located on the Has upper edge (1) of the mold (A) or its top supporting shoulder (12). 8 ») Device according to claim 5, characterized marked that the upper edge strip is double-walled and extends vertically on both sides of the upper edge (1) of the mold (A) or its attachment, the interior Wall (17) and the outer wall (18) of the edge strip firmly together are connected. 9 ») Vorriohtung according to claim 8, thereby characterized in that the inner wall (17) and the outer wall (18) by connecting links (19) feet attached to these walls 0098 50 / U85 are connected to each other 10.) Device according to claim 8, characterized characterized in that the inner wall (17) and the outer wall (18) are fixed by connecting members (19) molded onto these walls are connected to each other. 11.) Device for performing the method according to claim 3, characterized by a prefabricated Lid (13) with means for connection to the in solidification conceived metal (M) of the casting bath. 12.) Device according to claim 11, characterized characterized in that the means for connecting between the lid (13) and the metal (M) previously attached to the lid Comprise rods (14) for anchoring in the metal 13 ·) Device for performing the method according to claim 3, characterized by a cover, which in the mold and / or its attachment by contact with the casting bath by means of at least one on the surface of the same applied product (P ^) is formed. 009850/1 Blank page