AT401096B - MOLDING PIECE FROM A CASTING MATERIAL AND THEIR USE - Google Patents

Description

AT 401 096 B

The invention relates to a molding made of a cast material, with at least one connecting end, and the use of the molding.

The known cast fittings or fittings have internal and / or external threads for connecting pipelines, which means that complex mechanical processing is required after casting.

In addition, a screw connection of a fitting designed as an elbow or T-piece with a pipe already attached to a wall is only possible if there is sufficient space for screwing on.

Piping systems for metal pipes are known which can be tightly connected with force-fitting plug connections, such connections being e.g. are provided with seals and clamping elements and can be clamped together pipe couplings.

However, the various known moldings made from a cast material cannot be used for this purpose, so that such piping systems can only be used or expanded to a limited extent.

The object of the present invention is to create molded parts made of a cast material which can be used for the last-mentioned piping systems and which allow simple assembly and cost-effective production.

According to the invention, this object is achieved by the characterizing features of claim 1.

Particularly advantageous embodiments emerge from the dependent subclaims.

The use of the fittings is characterized in claim 11.

The invention is illustrated in several exemplary embodiments in the accompanying drawings and described below.

Show it:

1 is an angle shaped piece made of a cast material in view, which is connected to a plug connection with a tube,

2 is a shaped piece designed as a T-piece,

Fig. 3 is a formed as a reducing part, partly in section and

Fig. 4 is a shaped part designed as a closure part in section

The shaped piece shown in FIG. 1 is designed as a 90 x angle 1 and has two insertion ends 2, the one insertion end being cylindrical or, as shown, conically increasing in diameter to the outer end 3. The angle of inclination a is 0.5 to 2 *. preferably 1 ·. This increase in diameter improves the axial tensile strength of the connector.

The length L of the insertion end corresponds to 0.5 to 1.2 times the outer diameter D of the insertion end 2.

If the fitting 1 is connected to a pipe 5 with a plug-and-clamp connection 4, as can be seen from FIG. 1, a length L of approximately 0.5 to 0.6 times the outer diameter D is sufficient, preferably the insertion end for reasons of Material saving has this length.

If two fittings are connected directly to one another, it is advantageous if at least one insertion end has approximately 1.2 times the outside diameter, so that the plug-and-clamp connection 4 can be completely pushed on.

1 can also be designed as an arc with a larger radius, wherein the usual 30 ', 45 * or 60 * angle or arc fittings can be designed with such insertion ends, and the two insertion ends 2 also for different ones Pipe diameter can have corresponding outer diameters.

FIG. 2 shows a shaped piece designed as a T-piece 10 with three insertion ends 2 corresponding to the insertion ends described for FIG. 1.

The T-piece can also have different insertion ends 2 in diameter.

3 shows a shaped piece designed as a reduction part 20 with two insertion ends 2 with different diameters.

FIG. 4 shows a shaped part designed as a closure part 30 with an insertion end 2, the closure part being able to be a cap or a stopper as shown.

The molded parts are preferably made from malleable cast iron using the casting process, these being used bright or non-galvanized or galvanized.

Furthermore, the fittings can be made from spheroidal graphite cast iron, gray cast iron, unalloyed or alloyed steel castings.

In addition to production using the sand mold casting method, the precision casting method, which has also become known as investment casting or precision casting, can be used in particular when using steel casting. 2nd

Claims (11)

AT 401 096 B Due to the inventive design of the molded parts from a cast material with plug-in ends, these can be non-positively and tightly connected to pipes or to another molded part by plug-and-clamp connection, the inexpensive to produce molded parts of different shapes also having already on or in a recess in the Wall-mounted pipes can be connected in a simple manner by plugging and clamping. 1. Molded part made of a cast material with at least one connecting end, characterized in that the connecting end is designed as a burr-free insertion end (2), the length (L) of which corresponds to 0.5 to 1.2 times the outer diameter (D). 2. Fitting according to claim 1, characterized in that the insertion end (2) is cylindrical or conically enlarging in diameter towards the end (3), the angle of inclination (a) being 0.5 to 2 ×. 3. Molding according to claim 1 or 2, characterized in that it is designed as an angle or arc (1). (Fig. 1) 4. Molding according to claim 1 or 2, characterized in that it is designed as a T-piece (10). (Fig. 2) 5. Molding according to claim 1 or 2, characterized in that it is designed as a reduction part (20) with differently inserting ends (2) in diameter. (Fig. 3) 6. Molding according to claim 1 or 2, characterized in that it is designed as a closure part (30) with an insertion end (2). (Fig. 4) 7. Molding according to one of claims 1 to 6, characterized in that it is made of malleable cast iron. 8. Molding according to one of claims 1 to 6, characterized in that it is made of spheroidal graphite cast iron. 9. Molding according to one of claims 1 to 6, characterized in that it is made of alloyed or unalloyed cast steel. 10. Fitting according to one of claims 1 to 9, characterized in that it is produced in the precision casting process. 11. Use of the fitting according to one of claims 1 to 10 in piping systems consisting of metal pipes, which are sealingly and non-positively connected with radially clampable plug-clamp connections 4. Including 2 sheets of drawings 3