DE1508765B1

DE1508765B1 - METHOD AND DEVICE FOR APPROACHING THE INDIVIDUAL RUNNING OF A HORIZONTAL CONTINUOUS CASTING MACHINE

Info

Publication number: DE1508765B1
Application number: DE19661508765
Authority: DE
Inventors: John Blessinger; Richard Harris; Gerald Molvik
Original assignee: Aluminum Company of America
Current assignee: Howmet Aerospace Inc
Priority date: 1965-08-16
Filing date: 1966-08-09
Publication date: 1971-05-06
Also published as: GB1093409A; US3344845A; NO121414B

Description

1 .21 .2

Die Erfindung betrifft ein Verfahren zum Anfahren dem Abziehband übermäßige Beschleunigungsbeder einzelnen Stränge einer Srranggießmaschine, bei lastungen auf den Barren übertragen werden, ist vorder mehrere Stränge horizontal aus gemeinsam ge- zugsweise eine Bremsanordnung mit gegen die Innenspeisten Strangkokillen gleichzeitig mit konstanter flächen der Führungsschienen durch Federn ange-Geschwindigkeit abgezogen werden, wobei jede Ko- 5 preßten Bremsstopfen vorgesehen,
kille für sich allein zum Anfahren mittels eines An- Um beim Füllen der Kokille, während sie durch fahrkopfes verschlossen wird, sowie eine Vorrichtung den Anfahrkopf verschlossen ist, diesen Anfahrkopf zur Durchführung des Verfahrens mit aus einer ge- festzulegen und damit ein Auslaufen nicht erstarrter meinsamen Verteilerrinne über Zwischenbehälter ge- Schmelze aus der Kokille zu vermeiden, können Ausspeisten, horizontal in einer Ebene angeordneten io nehmungen an den Innenflächen der Führungsschie-Stranggießkokillen und einer gemeinsamen, mit kon- nen zum Eingriff der Bremsstopfen in der Endstelstanter Geschwindigkeit angetriebenen Abziehvor- lung des Anfahrkopfes, in welcher dieser den Abziehrichtung, querschnitt der Kokille verschließt, vorgesehen sein.The invention relates to a method for starting the pull-off belt excessive acceleration of the individual strands of a strand casting machine, when loads are transferred to the ingot, several strands are horizontally connected in front of several strands together, preferably a braking arrangement with ingot molds fed against the inside at the same time with constant areas of the guide rails by springs -Speed can be deducted, each Ko- 5 pressed brake plugs provided,
kille by itself for start-up by means of an in order when filling the mold, while it is closed by the driving head, as well as a device the starting head is closed, this starting head for carrying out the method with a defined and thus a leakage of non-solidified common Distributor channel over intermediate containers to avoid melt from the mold can be discharged, horizontally arranged in a plane io recesses on the inner surfaces of the guide bar continuous casting molds and a common, with can for the engagement of the brake plugs in the end constant speed driven withdrawal of the Approach head, in which it closes the pulling direction, cross-section of the mold, be provided.

Bei einer Reihe von Anwendungsgebieten, insbe- Die Erfindung wird im folgenden an Hand derIn a number of fields of application, in particular the invention is explained below with reference to the

sondere beim Gießen einer größeren Anzahl von 15 Zeichnungen an einem Ausführungsbeispiel näher er-especially when casting a larger number of 15 drawings on an exemplary embodiment.

Strängen nebeneinander aus einer gemeinsamen läutert. In den Zeichnungen zeigtStrands side by side from a common purifies. In the drawings shows

Sammelleitung haben Horizontal-Stranggußmaschi- F i g. 1 teilweise im Horizontalschnitt eine Drauf -Manifold have horizontal continuous casting machine F i g. 1 partially in horizontal section a top -

nen gegenüber Vertikal-Stranggußmaschinen Vortei- sieht auf eine Stranggießmaschine, an der die Erfin-advantages over vertical continuous casting machines on a continuous casting machine on which the invention

Ie. Im Gegensatz zu Vertikal-Stranggießmaschinen dung Anwendung findet,Ie. In contrast to vertical continuous casting machines, dung is used

besteht jedoch beim Anfahren der Horizontal-Strang- 20 F i g. 2 einen Längsschnitt entlang der Linie H-IIHowever, when approaching the horizontal strand 20 F i g. 2 shows a longitudinal section along the line H-II

gießmaschinen die Notwendigkeit, die Abziehöff- inFig. 1,casting machines the need to use the Abziehöff- inFig. 1,

mangen der Stranggießkokillen zu versehließen, da Fig. 3 eine Draufsicht auf die erfindungsgemäßeThe continuous casting molds need to be closed, since FIG. 3 is a plan view of the inventive

mit für den Anfang des Barrens ein völlig geschlossen Vorrichtung aus Richtung der Linie III-III inwith a completely closed device for the beginning of the ingot from the direction of the line III-III in

erstarrter Gußkörper gebildet wird. Wenn die Ab- Fig. 2, ,solidified cast body is formed. If the Ab- Fig. 2,,

ziehöffnung der Kokille nicht verschlossen wäre, 25 Fig. 4 einen Schnitt entlang der Linie IV-IV indrawing opening of the mold would not be closed, 25 Fig. 4 is a section along the line IV-IV in

würde die in die Kokille einfließende Schmelze die Fig. 3,the melt flowing into the mold would be shown in FIG. 3,

Kokille nicht über den ganzen Querschnitt ausfüllen, Fi g. 5 in vergrößertem Maßstab einen Schnitt entsondern aus der Kokille abfließen. Da derartige lang der Linie V-V in F i g. 3.Do not fill the mold over the entire cross-section, FIG. 5 separate a section on an enlarged scale flow out of the mold. Since such a long line V-V in FIG. 3.

Stranggießmaschinen mit konstanter Äbziehgeschwin- In den Fig. 1 und 2 ist eine StranggießmaschineContinuous casting machines with constant Äbziehgeschwin- In Figs. 1 and 2 is a continuous casting machine

digkeit arbeitenden Abziehvorrichtungen ausgestattet 30 10 gezeigt, die vier horizontale Stranggießkokillen 14working extractors equipped 30 10, the four horizontal continuous casting molds 14

sind, besteht die Gefahr, daß beim Anfahren der aus aufweist, die an einer gemeinsamen Kokillenplatte 16are, there is a risk that when starting the has that on a common mold plate 16

der Kokille austretende Strang erheblichen Beschleu- befestigt sind. Jede Kokille 14 ist mit einem Wasser-the strand exiting the mold are attached to a considerable amount of acceleration. Each mold 14 is provided with a water

nigungsbelastungen ausgesetzt wird. ring 20 versehen, der mit einer Reihe von Löchern 22is exposed to stresses and strains. ring 20 provided with a series of holes 22

Es ist die der Erfindung zugrunde liegende Auf- versehen ist, um den Wasserstrahl 24 zur KühlungIt is the arrangement on which the invention is based is provided in order to cool the water jet 24

gäbe, derartige Beschleunigungsbelastungen auf dem 35 auf den Gießstrang 30 zu spritzen. Die Kokillen liegenthere would be to spray such acceleration loads on the 35 onto the cast strand 30. The molds are lying

Anfangstrang zu vermeiden. Dies ist insbesondere in einer horizontalen Ebene und sind zueinander pa-Avoid starting strand. This is especially in a horizontal plane and are pa-

dann von Bedeutung, wenn z. B. zum Austausch von rallel.then of importance if z. B. to exchange rallel.

Kokillen wegen abgenutzter Auskleidung oder für Als gemeinsame Abzieheinrichtung ist ein endloses sonstige Instandsetzungen an der Eingießvorrichtung Förderband 40 vorgesehen, welches die aus den Koeinzelne der Kokillen stillgesetzt werden müssen, 40 killen austretenden erstarrten Barren stützt und abwährend die anderen Kokillen der Maschine weiter zieht. Das durch einen nicht gezeigten Motor angearbeiten. triebene Förderband 40 läuft über Trommeln 42 undChill molds because of worn lining or for As a common pulling device is an endless one other repairs are provided on the pouring device conveyor belt 40, which the Koeinzelne the ingot molds must be shut down, 40 killer solidified ingots are supported and during the period pulls the other molds of the machine on. Work on that by a motor not shown. driven conveyor belt 40 runs over drums 42 and

Gemäß dem erfindungsgemäßen Verfahren wird eine Tragplatte 44 derart, daß er eine Abziehlinie 41According to the method according to the invention, a support plate 44 is made such that it has a peel line 41

zur Lösung dieser Aufgabe jeder Anfahrkopf für sich durchläuft.to solve this task, each approach head goes through for itself.

allmählich von Null auf die konstante Abziehge- 45 Eine nicht gezeigte Schere zum Schneiden dergradually from zero to the constant peeling 45. Scissors, not shown, for cutting the

schwindigkeit beschleunigt. Durch dieses erfindungs- Stränge auf Barren vorgeschriebener Längen ist hinterspeed accelerated. Through this invention strands on bars of prescribed lengths is behind

gemäße Verfahren werden übermäßige Beschleuni- dem Förderband 40 vorgesehen. Oberhalb des För-In accordance with methods, excessive acceleration is provided to the conveyor belt 40. Above the conveying

gungsbelastungen vermieden und eine Beschädigung derbandes40 sind eine oder mehrere Niederhalte-stresses are avoided and damage to the strap40 is one or more hold-down

des Anfahrstranges verhindert. walzen 46 vorgesehen.of the starting line prevented. rollers 46 provided.

Eine Vorrichtung der eingangs erwähnten Art zur 50 Die Schmelze fließt über eine Zuführrinne 60,A device of the type mentioned at the outset for 50 The melt flows via a feed channel 60,

Durchführung dieses Verfahrens besteht Vorzugs- einen Hauptverteiler 62 und Zwischenbehälter 64This method is preferably carried out using a main distributor 62 and an intermediate container 64

weise aus einer Führungseinrichtung zum Führen des durch Eingußöffnungen 19 in die Eingußseite derwise from a guide device for guiding the through sprue openings 19 in the sprue side of the

Anfahrkopfes für den aus der zugeordneten Strang- Kokillen 14.Approach head for the mold from the associated strand mold 14.

gießkokille austretenden Gußstrang und eine Ein- In den F i g, 2 und 3 ist ein Anfahrkopf 84 für einecasting mold exiting cast strand and an input In Figures 2 and 3 is a starting head 84 for a

richtung zur allmählichen Beschleunigung des An- 55 Kokille 14 dargestellt, der auf einer Führungseinrich-direction for the gradual acceleration of the mold 14 is shown, which is on a guide device

fahrkopfes beim Anfahren des Gußstranges. rung 86 verschiebbar ist. Der Anfahrkopf entsprichtdriving head when approaching the cast strand. tion 86 is displaceable. The approach head corresponds to

Dabei ist vorzugsweise die Einrichtung zur Kraft- mit seinem Kopfteil der Abziehöffnung der Strangübertragung auf den Anfahrkopf eine Kette, ein Seil gießkokille in Größe und Querschnitt, so daß er in oder ein anderes biegsames Zugelement, das mit sei- diese Abziehöffnung eingesetzt werden kann und nem freien Ende am Anfahrkopf befestigt ist und mit 60 diese beim Beginn eines Gießganges verschließt. Er seinem anderen Ende auf einer Seilwinde liegt. hat eine Höhe, daß er zwischen das Förderband undIn this case, the device for power transmission is preferably the pull-off opening of the strand transmission with its head part on the approach head a chain, a rope casting mold in size and cross-section, so that it can be in or another flexible tension element that can be used with this pull-off opening and Nem free end is attached to the approach head and closes this with 60 at the beginning of a casting run. He its other end is on a winch. has a height that it is between the conveyor belt and

Gleichzeitig kann eine weitere Beschleunigungs- die Niederhaltewalzen paßt.At the same time, another accelerator can be used to adjust the hold-down rollers.

kraft auf den Anfahrkopf und den abgezogenen Die Führungseinrichtung 86 enthält ein Paarforce on the approach head and the withdrawn The guide device 86 includes a pair

Strang dadurch übertragen werden, daß der Anfahr- Führungsschienen 87. Im Ausführungsbeispiel sindStrand are transferred in that the approach guide rails 87. In the exemplary embodiment are

kopf mit dem der Kokille abgewandten Abschnitt 65 die kokillenseitigen Enden der Führungsschienen aufhead with the section 65 facing away from the mold on the mold-side ends of the guide rails

auf der als endloses Förderband ausgebildeten Ab- die Abziehlinie 41 einstellbar mit der Kokillenplatteon the peeling line, which is designed as an endless conveyor belt, the peeling line 41 is adjustable with the mold plate

ziehvorrichtung reibend aufliegt. 16 verbunden.pulling device rests on friction. 16 connected.

Um zu verhindern, daß durch diese Reibung auf Hierfür sind an diesen Enden der Führungsschie-In order to prevent this friction from affecting this end, the guide rails

ORlQlNAL INSPECTEDORlQlNAL INSPECTED

Claims

3 43 4

NEN 87 inclined longitudinal struts 92 rigidly attached, the end connected to the extension 156, on which his-

Support themselves via cross struts 96. The other end are hinged on the hand via pins 157 handlebars 158, the

the longitudinal strut 92 is at 93 console-like with its other ends by pins 159 with the

angles and are pivotably connected via bolts 90 guided in sleeves 94 with abutments 150. the

with attached to the mold plate 16 stops 5 upward movement of the pull rod 154 through the

88 connected. Cam lever 152 thus causes compression

At the rear of the guide rails are the springs. The nut 160 on the tie rod 157

as in Fig. 2 and 3 shown, retaining lugs 98 on enables the spring force to be set in

Attached to each rail by bracket 102 and a squeezed position.

Spindle 110 by means of a clamp 113, 114 with an io. The approach head 84 is pushed out of the mold 14

Support 112 are connected, which is part of the non-variable speed electric motor 166

can be shown machine frame, which is deducted the speed on a carrier 168 by means of

Hold-down roller 46 carries. Movable transversely to the bars by means of index markings on a carriage 169

the spindle can be adjusted so that the guide is attached to one of the bars or a

Rungsschienen 87 can easily be adjusted against the conveyor belt 40 on the molds. A chain 170

are pressed. connects the motor 166 to the launch head 84

The size and spacing for the rails 87 by means of a bolt 172 that attaches a ring 174 is adapted to the strand cross-section. The length of one end of the chain and the lug 138 on the Rails is preferably such that the approach head rear guide connection of the approach head and the strand supported by this penetrates down to the low point. The engine 166 is with a chain winch holding roller are guided. The approach head 84 is coupled 178. There is a chain underneath the engine Provided solely by the hold-down roller and the scraper 176 in order to pull off the chain 170 by 90 ° guided and transported. steer so that the pulling side is parallel to the withdrawal

The approach head 84 contains a pair of front guide devices of the associated strand,

rungsnasen 118 and a rear guide 120. After 25 this independent drive device has sufficient

Fig. 2, 3 and 4 are the front guide lugs low force to the inhibiting effect of the brake plug

to overcome by means of a flange 122 and screw bolts 123 142. Another vari-

attached to the approach head 84. Each guide nose able force device, z. B. a hydraulic one

lies with contact surfaces 124 and 125 against the upper part of the electrical power device shown

edge or the inner surfaces of the guide rails 87 30 are used.

to which the approach head vertically and horizontally According to the invention is used to re-pour

support. guide device 86 and motor 166

According to FIGS. 2, 3 and 5, the rear guide forms the corresponding mold set. The approach head

tion 120 two guide lugs 130, which with an 84 is placed on the guide rails 87 and a

bearing surfaces 132 and 133 pushed against the upper and Au- 35 short piece into the mold 14. Of the

Outer surfaces of the guide rails 87 rest. The rear part of the approach head rests on the

Guide 120 is on the approach head 84 by means of bolts 134 on the conveyor belt 40, a co-movement through friction

and tabs 136 attached to guide tabs 130. however, is prevented by the brake plug 142. That

At a lug 138 on the guide 120, the pouring is done by pulling out the stopper

Pull chain 170 attached for the approach head. 40 of the connection opening between the main distributor

The lowermost part of the approach head and the associated intermediate container 64 are

at 140 on the conveyor belt 40. To the fellow-headed.

would increase due to friction at this point. are deducted in the rear guide 120 a pair of mender speed until it is the opposite of the normal outwardly resiliently pretensioned 45 times the withdrawal speed of the other strands Brake plug 142 arranged so that it has reached against. The speed will then go through press the inner surface of the guide rails 87 against them. the motor 166 held constant until the starter head The guide rails have depressions 144 in 84 under the hold-down roller 46 which which the brake plugs engage when the start-up then the removal of the start-up head and the head closes the mold. Springs 146 are between 50 more pulling off the strand along with the the brake plugs arranged, which these exercises after other strands. The bolt 172 will press outwards against the guide rails. Which is then removed to expose the approach head 84, in Fig. The embodiment shown in FIG. 5 causes the chain 170 to be reared onto the chain winch 178 Guide lugs 130 and the brake plug sore. The sprocket is z. B. by a Teles-142 the guide rails 87 lifted at the correct distance 55 kopeinrichtung 182,184 and through a keep. Furthermore, the locking of the brake plug causes adjustment barrier 186 to be held. The entire start-up 142 In the recesses 144 an additional head-pulling device can, if desired, longitudinally vertical holder is pushed out of the operating position against upward movement of the carrier 168 driving head, whereby an exact vertical alignment will be. The approach head 84 is then of the The line between the approach head and the line is removed and secured, as is the rail is. arrangement 86 aside until used again

Set for inserting and releasing the brake plugs 142,
each lies in a spring housing 148, which too

Record spring abutment 150. Turning a patent claim:

Turn the cam lever 152 clockwise by 90 °

acts an upward movement of the pull rod 154, the 1st method of approaching the individual

with the cam lever 152 through the pin 153 strands of a continuous casting machine, in which several

is bound. The pull rod 154 is fed horizontally from jointly on its lower strands

Continuous molds simultaneously at constant speed be withdrawn, with each mold being closed by itself for start-up by means of a start-up head, thereby characterized in that the approach head gradually increases from zero to the constant withdrawal speed is accelerated.

2. Apparatus for performing the method according to claim 1, with a common Distribution channel (62) fed via intermediate container (64), arranged horizontally in one plane Continuous casting molds (14) and a common, driven at constant speed Extraction device characterized by a guide device (86) for guiding the approach head (84) for the associated Continuous casting mold exiting cast strand (30) and a device (166,170,178) for gradual acceleration of the approach head when approaching the cast strand.

3. Apparatus according to claim 2, characterized in that the device for power transmission on the approach head (84) is a chain (170) or a rope, which with its free end on the Start-up head (84) is attached and its other end is on a cable winch (166,178).

4. Apparatus according to claim 2 or 3, characterized characterized in that the approach head (84) with the section (140) facing away from the mold rests frictionally on the pull-off device designed as an endless conveyor belt (40).

5. Device according to one of claims 2 to 4, characterized by a brake arrangement with brake plugs pressed against the inner surfaces of the guide rails (87) by springs (146).

6. Apparatus according to claim 5, characterized by recesses (144) on the inner surfaces the guide rails (87) for engaging the brake plugs (142) in the end position of the Approach head (84), in which this the extraction cross-section the mold (14) closes.

For this purpose 2 sheets of drawings