Title: Die casting machine with screw plugs in passages

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Abstract: A gooseneck for a hot chamber die casting machine, which gooseneck includes a compression chamber having a pressure piston movably mounted therein with the compression chamber being in communication witha conical mouthpiece by way of transverse and vertical passages. The mouthpiece is arranged in a neck projecting from the gooseneck with the entire gooseneck being forged from a heat-resistant tool steel. The area of the casting container which includes the compression chamber and the vertical passage has in cross-section the form of two cylinders with parallel axes. A heating device may be provided for heating the projecting neck portion forming the mouthpiece of the gooseneck and a further heating construction may be provided for heating the injection nozzle to prevent the solidification of a melt therein. The vertical passage and transverse passage are cast as through-passages with one end of each of the passages being closed by way of a screw plug provided with a cutting edge which is directed toward the respective passage and which penetrates into the material of the gooseneck as the respective plugs are inserted into the passages. The plugs are heated prior to being inserted into the respective passages whereby, when the plugs are tightened, the material of the respective plugs and the material of the gooseneck are fused so that an effect similar to welding occurs.


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