DE1208452B - Seal between a block mold insert and a block mold - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

int. α .:

B22d

German class: 31 c -10/05

Number: 1208452

File number: S 72839 VI a / 3 Ic

Filing date: March 4, 1961

Opened on: January 5, 1966

The invention relates to a seal between a block mold insert and the approximately perpendicular running inner surface of a block mold.

There are known attachments for casting molds which are placed on the upper part of a casting mold and absorb a certain amount of molten metal. They form a watering head that during the hardening feeds the core of the ingot.

Such articles are known. In one type, the attachments are placed on the opening of the mold, while the other type of attachment is inserted into the opening of the mold. The problem the seal is proportionate in the case of a heat attachment placed on the edge of the mold opening easy to solve. In a known attachment of this type, the inner surface of the attachment is in The area of contact with the mold opening is approximately flush with its inner surface. To achieve the Sealing is a deformable sealing cord in the contact gap between the parts on the inside inserted into an annular groove. The required sealing pressure is determined by the weight of the Essay generated. The seal when the attachment is in place is therefore relatively unproblematic.

The seal is much more difficult with an inserted attachment, since there is a seal between essentially vertical surfaces. In a known solution to this problem the attachment consists of an inner conical sheet metal jacket and an outer one at the mold opening adjacent insulating body. There is a cavity between the sheet metal jacket and the insulating body, which is filled with loose insulating material. At the lower end of the attachment there is a sealing ring Clay provided, which is only produced when the attachment is inserted into the mold opening. This type of seal is not only extremely complicated, but rather the sealing effect that can be achieved with it not particularly big either.

These disadvantages are avoided by the invention. The invention is characterized by a deformable sealing ring, which runs on a at the lower end of the block mold insert, is located radially outwardly protruding annular flange and by a surrounding the block mold insert, above of the ring flange displaceable weight ring pressed radially against the inner surface of the block casting mold will.

Such a seal can provide an effective seal between the insert and the inner surface the ^ mold opening can be reached at every height position of the insert in the opening, and

Seal between a block mold insert and
a block mold

Applicant:

Doittau Produits Metallurgie,

Les Tarterets-Corbeil,

Seine-et-Oise (France)

Representative:

Dr. K. R. Eikenberg, patent attorney,

Hanover, Am Klagesmarkt 10-11

Named as inventor:

Rene Thierry,
Claude Marie,
Corbeil-Essonnes, Seine-et-Oise (France)

Claimed priority:

France 7 March 1960 (820 607)

although the seal is formed immediately upon insertion by moving the ring downwards. These The type of seal is not only extremely effective, but also simple in construction and in handling.

The invention is to be explained in more detail below using an exemplary embodiment. In the Drawings represents

Fig. 1 is a view of the attachment according to the invention before lowering the conical ring, partly in section,

F i g. 2 shows a view of the embodiment according to FIG. 1 with the conical ring lowered.

The insert 2, which consists of a frustoconical metal wall, extends with its lower end into the opening of the upper part 1 of the casting mold. At the lower end of the insert 2 an outwardly facing annular flange 3 is provided, which fits into the opening of the upper part 1 of the casting mold with a play e corresponding to the casting tolerances. At the upper end, the insert 2 also has an annular flange 4 which is expanded radially into the interior of the insert 2 in order to cover the upper part of a cladding 5. The inner surface of the insert 2 is provided with ribs (not shown) on which the inner lining 5 forming panels

-.-- ■ - "" ■. · 509777/352

are attached from exothermic material. This disguise, which is not the subject of the invention, can be designed in a known manner and is not explained in more detail.

The insert 2 is made up of a “conical metal ring 6 which is vertically displaceable within certain limits surround. The conical ring is guided in openings 7 on rigid side arms 8 of the insert 2. These Side arms are supported on wedge-shaped supports 9, which at least up to the casting the inlet depth of the Determine insert 2 in the mold. The conical ring 6 carries pins 10 for lifting.

First, the conical ring is hung on the pin 10, wherein - the insert 2 - itself through the Side arms8 that are worn in the openings? 15th protrude. The inner cladding 5 of the insert is composed: when: · using -exothermic · "material or, in the case of a semi-permanent cladding, consists of refractory bricks. In the space in between between the upper boundary surface of the annular flange 3 and the lower boundary surface of the conical ring 6 is a sealing ring 11 made of a sufficiently plastic material used, for example a bead with one in the description guide mentioned form, preferably and practically a silicon-containing plastic material or a strip of putty.

The entire attachment is then embedded in the upper part 1 of the casting mold until the side arms 8 rest on the wedge-shaped supports 9, the height of which is adapted to the mass of the respective ingot to be cast (FIG. 1). Immediately after letting in the insert, the conical ring is continuously lowered, whereby the sealing ring 11 is compressed by its own weight and pushed against the outer circumference, so that at the same time the play e on the outer circumference of the annular flange 3 and at the lower end of the conical ring 6 is filled will. As shown in FIG. 2, the sealing ring 11 ensures a tight connection, and with the appropriate shape of the sealing ring, the lower edge 12 of the deformed sealing ring is in the vicinity of the lower surface of the annular flange 3 of the insert 2, so that the expansion of the cast seams is limited to a minimum .

After that, the metal can be poured in, and then, using a suspended one, can be used The wedge-shaped support 9? be lifted.

The design of the connection described in one embodiment can generally be used for .alle Attachments are used in which the connection is sealed by expanding a plastic mass can be.

Claims (5)

Patent claims: 1. Seal between a block mold insert and the approximately perpendicular inner surface a block mold, I kemize net by a deformable sealing ring (11), which is on one at the lower end of the block mold insert extending, radially outwardly protruding annular flange (3) and through a weight ring that surrounds the block mold insert and is displaceable above the annular flange (3) (6) radially against tlie inner surface of the ■ Block casting mold (1) is pressed. 2. Block mold insert according to claim 1, characterized in that the block mold insert and weight ring (6) have the shape of a truncated cone which widens downwards. 3. Block mold insert according to claims 1 and 2, characterized in that the sealing ring (11) is deformable by the weight of the weighting ring (6) against the inner surface of the block mold (1). 4. Block mold insert according to claims 1 to 3, characterized in that the upper A stop flange (4) is provided at the end of the block mold insert, which allows the Compression ring (6) prevented from being used, with lifting devices on the ring (6), for example in the form of pins (10) are provided. 5. Block mold insert according to claims 1 to 4, characterized in that the sealing ring made of malleable material or of loose material filled into tubes. Considered publications:
U.S. Patent Nos. 2,231,813, 2,863,192. 1 sheet of drawings 509777/352 12.65 O Bundesdruckerei Berlin